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Search results for problems posted by Brian Smith :
Difficulty: 3 of 5Next Numbers Please #9 (in Numbers) Rating: 3.67
Posted on 2017-08-23 by Brian Smith (Solution Posted, 9 Comments)
Difficulty: 4 of 5Ellipse in a Truncated Triangle (in Shapes)
Posted on 2017-08-13 by Brian Smith (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Pandigitals Divided by 11 (in Numbers)
Posted on 2017-07-23 by Brian Smith (No Solution Yet, 4 Comments)
Difficulty: 4 of 5Unpainting Black (in Probability)
Posted on 2017-07-14 by Brian Smith (No Solution Yet, 5 Comments)
Difficulty: 4 of 5Commutative Exponentiation (in Just Math) Rating: 4.00
Posted on 2017-07-07 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 3 of 5Many Knights (in Games)
Posted on 2017-07-05 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 538s and Bunches of 1s (in Numbers) Rating: 4.50
Posted on 2017-06-30 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Make It Even Again (in Probability)
Posted on 2017-06-20 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Fifty-Fifty Again? (in Probability) Rating: 3.00
Posted on 2017-06-14 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 3 of 5Red vs Black Cuts (in Numbers)
Posted on 2017-06-05 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 3 of 5Seven Region Partition (in Shapes)
Posted on 2017-05-27 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Higher Powers of Eleven (in Numbers)
Posted on 2017-05-24 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 4 of 5Add one more circle (in Geometry)
Posted on 2017-05-21 by Brian Smith (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Seven Point Placement (in Shapes) Rating: 4.00
Posted on 2017-05-20 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Four Random People on a Bridge (in General)
Posted on 2017-04-14 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Sticks in a Cube (in Shapes)
Posted on 2017-04-11 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 3 of 5A Square Slab and a Cube (in Shapes)
Posted on 2017-03-12 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Staircases in a Cube (in Shapes)
Posted on 2017-03-10 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Run Away Redux (in Games) Rating: 3.00
Posted on 2017-03-03 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Forward and Backward Word Values (in General) Rating: 4.50
Posted on 2017-02-07 by Brian Smith (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Multiples with 3 (in Numbers) Rating: 5.00
Posted on 2017-01-31 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Age Progression (in Numbers)
Posted on 2017-01-16 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 2 of 5From Tangent to Circle (in Geometry) Rating: 3.00
Posted on 2017-01-04 by Brian Smith (No Solution Yet, 4 Comments)
Difficulty: 4 of 5Congruent Incircles (in Geometry) Rating: 5.00
Posted on 2017-01-01 by Brian Smith (No Solution Yet, 6 Comments)
Difficulty: 2 of 5Exclusive Inverter (in Algorithms)
Posted on 2016-12-21 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Traveling with Luggage (in Logic) Rating: 3.00
Posted on 2016-12-15 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Decimal and Binary Representation (in Numbers)
Posted on 2016-12-13 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Pentagon Partitions (in Shapes)
Posted on 2016-12-11 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Gluing Cubes (in Shapes)
Posted on 2016-12-08 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Moving Two Rooks (in Games)
Posted on 2016-12-06 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 4 of 5Get all the Real Parts of the Problem (in Just Math)
Posted on 2016-12-03 by Brian Smith (Solution Posted, 0 Comments)
Difficulty: 3 of 5Two Non-overlapping Triangles (in Geometry)
Posted on 2016-11-27 by Brian Smith (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Seven Hexominos and Two Triominos (in Shapes)
Posted on 2016-11-26 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Covering a Rectangle with Hexominos (in Shapes)
Posted on 2016-11-05 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5The Ninth Hexomino (in Shapes)
Posted on 2016-10-28 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Rectangle Evasion 2 (in Shapes)
Posted on 2016-10-23 by Brian Smith (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Six Hexominos surrounding a Tetromino (in Shapes)
Posted on 2016-10-19 by Brian Smith (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Tile a Rectangle (in Shapes)
Posted on 2016-10-15 by Brian Smith (No Solution Yet, 0 Comments)
Difficulty: 3 of 5U-Hexominos and Squares (in Shapes)
Posted on 2016-10-12 by Brian Smith (No Solution Yet, 0 Comments)
Difficulty: 3 of 5No Fault Coverage 2 (in Shapes)
Posted on 2016-10-10 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Nine Hexominos in a Square (in Shapes)
Posted on 2016-10-07 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Covering a Square with Hexominos (in Shapes)
Posted on 2016-10-06 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Rectangle Evasion (in Shapes)
Posted on 2016-09-29 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Immobile Hexominos (in Shapes)
Posted on 2016-09-25 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Eight Hexominos plus a Tetromino (in Shapes)
Posted on 2016-09-17 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Sparse Packing a Zig-Zag (in Shapes)
Posted on 2016-09-11 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Lopsided T-Hexomino (in Shapes)
Posted on 2016-09-09 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Hexominos and Squares (in Shapes)
Posted on 2016-09-07 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Ten L-Hexominos (in Shapes)
Posted on 2016-08-31 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 3 of 5T-Hexomino Packing (in Shapes)
Posted on 2016-08-26 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Covering a Cube with Strips (in Shapes)
Posted on 2016-08-18 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Tilings of a Hexomino (in Shapes)
Posted on 2016-08-16 by Brian Smith (No Solution Yet, 0 Comments)
Difficulty: 3 of 51-2-3-4 Square (in Geometry)
Posted on 2016-08-12 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 3 of 5A Sum of Consecutive Square Roots (in Just Math)
Posted on 2016-08-10 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 4 of 5Divisibility to Square II (in Just Math)
Posted on 2016-08-07 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Pandigital Multiples of 99 (in Numbers)
Posted on 2016-08-03 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Weight Limited Bridge (in General)
Posted on 2016-08-01 by Brian Smith (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Ball Series Insertion (in Weights and Scales)
Posted on 2016-07-29 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 2 of 5A Tetrahedral Volume Puzzle (in Shapes)
Posted on 2016-07-28 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 515 Triominoes (in Shapes)
Posted on 2016-07-26 by Brian Smith (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Indivisibility by 529 (in Just Math)
Posted on 2016-07-25 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 4 of 5Five Pairs of Balls (in Weights and Scales)
Posted on 2016-07-22 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Primes divide expression? (in Just Math)
Posted on 2016-07-20 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5The First Repeat (in Probability)
Posted on 2016-07-18 by Brian Smith (No Solution Yet, 5 Comments)
Difficulty: 4 of 5Restricted Five Coin Sort (in Weights and Scales)
Posted on 2016-07-14 by Brian Smith (Solution Posted, 1 Comments)
Difficulty: 3 of 5Consecutive Sums (in Numbers)
Posted on 2016-07-12 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Common Multiple from a Cubic (in Just Math) Rating: 4.00
Posted on 2016-05-01 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 2 of 5Draw a Line to Partition the Grid (in General)
Posted on 2016-04-25 by Brian Smith (No Solution Yet, 7 Comments)
Difficulty: 3 of 5Fibonacci Determinant (in Just Math)
Posted on 2016-04-19 by Brian Smith (Solution Posted, 1 Comments)
Difficulty: 3 of 5No Equal Weighings (in Weights and Scales) Rating: 3.00
Posted on 2016-04-18 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 4 of 5Rectangular Matrix Product Poser (in Just Math)
Posted on 2016-04-16 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Electrical Cube 3 (in Science)
Posted on 2016-04-15 by Brian Smith (Solution Posted, 1 Comments)
Difficulty: 3 of 5Quartic Questions (in Calculus)
Posted on 2016-04-13 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 3 of 5Quartering a Square (in Shapes)
Posted on 2016-03-29 by Brian Smith (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Tatami Tiling (in Shapes)
Posted on 2016-03-29 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 4 of 5Find Five Fractions (in Just Math) Rating: 4.00
Posted on 2016-03-27 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Electrical Cube 2 (in Science)
Posted on 2016-03-25 by Brian Smith (Solution Posted, 1 Comments)
Difficulty: 3 of 5Double Reflection (in Geometry)
Posted on 2016-03-24 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 2 of 5GCD of Fibonacci 2 (in Numbers)
Posted on 2016-03-23 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 4 of 5Set Me Up Again (in Numbers)
Posted on 2016-03-16 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Rectangles and U Pentominos (in Shapes)
Posted on 2016-03-08 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Four P Pentominoes (in Shapes)
Posted on 2016-03-04 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Cheese Cut Calculation (in Just Math)
Posted on 2016-03-03 by Brian Smith (Solution Posted, 1 Comments)
Difficulty: 3 of 5Arithmetic Roots (in Just Math) Rating: 4.00
Posted on 2016-03-02 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 3 of 5Three Ways to Put a Square in a Triangle (in Shapes) Rating: 4.00
Posted on 2016-02-26 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 3 of 5A Non-Reintersecting Tangent (in Calculus)
Posted on 2016-02-24 by Brian Smith (Solution Posted, 1 Comments)
Difficulty: 3 of 5Perimeter from Double-cones (in Shapes)
Posted on 2016-02-20 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 4 of 5Matching Isosceles and Right Triangle (in Geometry) Rating: 4.00
Posted on 2016-02-19 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 2 of 5Counting Ten Segment Paths (in General)
Posted on 2016-02-19 by Brian Smith (No Solution Yet, 6 Comments)
Difficulty: 4 of 5Pumpkins 7 (in Just Math) Rating: 4.00
Posted on 2016-02-05 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 4 of 5Pumpkins 6 (in Numbers) Rating: 4.00
Posted on 2016-01-22 by Brian Smith (Solution Posted, 11 Comments)
Difficulty: 1 of 5Three Block Quickie (in Weights and Scales) Rating: 3.00
Posted on 2016-01-11 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 3 of 5Pumpkins 5 (in Weights and Scales) Rating: 3.00
Posted on 2016-01-06 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 4 of 5Restricted Rook Runaround (in Games)
Posted on 2016-01-05 by Brian Smith (No Solution Yet, 7 Comments)
Difficulty: 2 of 5One out of Five (in Weights and Scales) Rating: 3.00
Posted on 2016-01-04 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 3 of 5One of Sixteen (in Weights and Scales) Rating: 4.00
Posted on 2015-12-29 by Brian Smith (Solution Posted, 12 Comments)
Difficulty: 2 of 5Triple Letter Occurrence, Twice! (in Word Problems)
Posted on 2015-12-10 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 3 of 5Two Light Coins (in Weights and Scales)
Posted on 2015-12-09 by Brian Smith (Solution Posted, 1 Comments)
Difficulty: 4 of 5No Unit Cube Dissection (in Shapes)
Posted on 2015-06-11 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Making a Multiple of Four (in Numbers)
Posted on 2014-04-30 by Brian Smith (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Embedded Triangles (in Shapes)
Posted on 2013-11-16 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Finding Good Batteries (in Weights and Scales) Rating: 5.00
Posted on 2013-11-11 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 3 of 5Five to One (in Science)
Posted on 2013-09-27 by Brian Smith (Solution Posted, 1 Comments)
Difficulty: 3 of 5Ten Items and Two Boxes (in Logic)
Posted on 2013-08-12 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 3 of 5The Far Sides (in Numbers)
Posted on 2013-08-08 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 4 of 5No Triple Repetitions (in Sequences)
Posted on 2013-08-06 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Forcing a Polynomial Factor (in Just Math) Rating: 4.00
Posted on 2013-08-03 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Reflected Halves (in Word Problems)
Posted on 2013-02-19 by Brian Smith (No Solution Yet, 5 Comments)
Difficulty: 2 of 5A List of Statements (in Logic)
Posted on 2012-12-07 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5A Prime Triplet (in Numbers) Rating: 4.67
Posted on 2012-05-19 by Brian Smith (No Solution Yet, 5 Comments)
Difficulty: 3 of 5A Trisected Angle and the Opposing Side (in Geometry)
Posted on 2012-04-22 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 2 of 5One Easier Sequence (in Sequences)
Posted on 2011-05-17 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5All Wired Up Again (in Logic)
Posted on 2011-02-01 by Brian Smith (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Reloading the Dice (in Probability) Rating: 3.00
Posted on 2011-01-20 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 3 of 5At Least Three Difference (in Numbers) Rating: 5.00
Posted on 2010-08-04 by Brian Smith (No Solution Yet, 13 Comments)
Difficulty: 3 of 5Bicentric Trapezoids (in Geometry) Rating: 3.00
Posted on 2010-07-24 by Brian Smith (Solution Posted, 1 Comments)
Difficulty: 3 of 5Triangle from Two Lines (in Geometry)
Posted on 2010-07-01 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 510 triominos = 6 pentominos (in Shapes) Rating: 4.00
Posted on 2010-06-16 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Constructing Minimal Area (in Geometry) Rating: 3.00
Posted on 2010-05-13 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 3 of 5Not So Simple Sines (in Just Math) Rating: 4.00
Posted on 2009-12-24 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5No Addition Allowed (in Numbers) Rating: 2.00
Posted on 2009-12-14 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 3 of 5The Red Stack (in Games) Rating: 3.50
Posted on 2009-12-04 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5A Normal and a Parabola (in Calculus)
Posted on 2009-12-02 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Reverse, Add, Palindrome (in Numbers) Rating: 5.00
Posted on 2009-11-27 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 2 of 5Checkerboard Dissection (in Shapes)
Posted on 2009-11-23 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 2 of 5Postal Service (in Numbers) Rating: 3.00
Posted on 2009-11-17 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 2 of 5Do: RE+MI=FA (in Numbers) Rating: 3.50
Posted on 2009-11-14 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 2 of 5Missing Pages (in Numbers) Rating: 3.50
Posted on 2009-11-13 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Splitting a 2 by N Rectangle (in Shapes)
Posted on 2009-11-11 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 3 of 5Through the Hole (in Shapes)
Posted on 2009-11-09 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Space Square (in Shapes)
Posted on 2009-11-06 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Two Rolling Balls (in Science) Rating: 3.50
Posted on 2009-11-04 by Brian Smith (No Solution Yet, 21 Comments)
Difficulty: 2 of 5Gassed Up Racing (in General)
Posted on 2009-11-02 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5A Man At The Intersection (in Liars and Knights) Rating: 5.00
Posted on 2009-10-31 by Brian Smith (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Half a Circle, Half a Sphere (in Probability) Rating: 3.00
Posted on 2009-10-28 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Solutions of a System (in Just Math)
Posted on 2009-10-26 by Brian Smith (Solution Posted, 1 Comments)
Difficulty: 2 of 5Double Coverage (in Shapes)
Posted on 2009-09-29 by Brian Smith (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Pennies, Dimes, and Quarters (in Numbers) Rating: 2.00
Posted on 2009-02-17 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 3 of 5Multipan Balance (in Weights and Scales) Rating: 3.00
Posted on 2009-01-18 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Twins (in Liars and Knights)
Posted on 2009-01-07 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 3 of 5Digital Sum 11 (in Numbers) Rating: 2.00
Posted on 2008-12-08 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 3 of 5Triangle Area (in Geometry)
Posted on 2008-11-28 by Brian Smith (Solution Posted, 11 Comments)
Difficulty: 2 of 5Two Digit Number (in Liars and Knights) Rating: 3.50
Posted on 2008-05-30 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5TWO x SIX = TWELVE (in Numbers) Rating: 2.00
Posted on 2008-05-02 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 1 of 51,000 (in Tricks) Rating: 1.20
Posted on 2008-04-28 by Brian Smith (No Solution Yet, 18 Comments)
Difficulty: 4 of 5Sum of Powers (in Numbers) Rating: 4.00
Posted on 2008-04-21 by Brian Smith (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Trapezoid Proof (in Geometry) Rating: 2.50
Posted on 2008-04-17 by Brian Smith (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Modular Polynomial Arithmetic (in Just Math) Rating: 4.00
Posted on 2008-04-16 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 4 of 5A rectangle Around A rhombus (in Geometry) Rating: 3.50
Posted on 2008-04-14 by Brian Smith (No Solution Yet, 13 Comments)
Difficulty: 3 of 5Rigidly Placed Polyominos (in Shapes)
Posted on 2008-04-10 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Broken Lights Out (in Logic) Rating: 3.00
Posted on 2008-04-07 by Brian Smith (No Solution Yet, 4 Comments)
Difficulty: 4 of 5Knave Contest (in Liars and Knights) Rating: 4.00
Posted on 2008-04-03 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 518 Queens (in General) Rating: 3.00
Posted on 2008-03-25 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 3 of 5Three Points in a Square (in Probability) Rating: 3.20
Posted on 2008-03-17 by Brian Smith (No Solution Yet, 18 Comments)
Difficulty: 2 of 5Undefined Term (in Sequences) Rating: 2.00
Posted on 2008-03-14 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 3 of 5Consecutive Near Palindromes (in Numbers) Rating: 3.33
Posted on 2008-02-13 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 3 of 5Median Maximum (in Geometry) Rating: 3.33
Posted on 2008-02-03 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 3 of 5Eight Points (in Geometry) Rating: 4.40
Posted on 2008-02-01 by Brian Smith (Solution Posted, 28 Comments)
Difficulty: 3 of 5The Car and the Train (in Science) Rating: 2.00
Posted on 2008-01-30 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 3 of 5Everybody Holds Hands (in Shapes) Rating: 4.50
Posted on 2008-01-22 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Three Point Cubic (in Calculus) Rating: 4.00
Posted on 2008-01-10 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 4 of 5One Piece Tetris (in Shapes) Rating: 4.00
Posted on 2007-12-19 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 2 of 5Two Cube Folding Puzzles (in Shapes)
Posted on 2007-12-18 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 3 of 5Cutting a Rectangle (in Shapes) Rating: 4.00
Posted on 2007-12-07 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 2 of 5Double Derangement Anagrams (in Word Problems) Rating: 4.00
Posted on 2007-12-05 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 3 of 5Sequence Fill In 2 (in Sequences) Rating: 3.00
Posted on 2007-11-30 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 4 of 5Laser Reconstruction: 7 targets and 3 mirrors (in General) Rating: 3.00
Posted on 2007-11-25 by Brian Smith (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Laser Puzzle (in General) Rating: 4.00
Posted on 2007-10-22 by Brian Smith (Solution Posted, 9 Comments)
Difficulty: 4 of 5Know thy Knaves (in Liars and Knights) Rating: 4.00
Posted on 2007-10-09 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5De Ja True? (in Liars and Knights)
Posted on 2007-09-29 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 3 of 5Doubleton (in Liars and Knights) Rating: 3.50
Posted on 2007-09-20 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 2 of 5Keycode (in Logic) Rating: 3.63
Posted on 2007-09-06 by Brian Smith (Solution Posted, 14 Comments)
Difficulty: 3 of 5On a Grid 2 (in Logic) Rating: 4.25
Posted on 2007-08-29 by Brian Smith (No Solution Yet, 10 Comments)
Difficulty: 3 of 5The Last Three Digits (in Numbers) Rating: 4.00
Posted on 2007-08-28 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 3 of 5Summing Powers 2 (in Numbers) Rating: 4.00
Posted on 2007-08-25 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 4 of 5Missing Numbers Please (in Sequences) Rating: 4.33
Posted on 2007-08-21 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 2 of 5Polynomial Divisions (in Calculus) Rating: 3.20
Posted on 2007-08-13 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 3 of 5On a Grid (in Logic) Rating: 4.00
Posted on 2007-08-08 by Brian Smith (No Solution Yet, 6 Comments)
Difficulty: 3 of 5The Sum of Fourth Powers (in Just Math) Rating: 4.00
Posted on 2007-07-04 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 2 of 5Counting the Types 2 (in Liars and Knights) Rating: 4.00
Posted on 2007-06-05 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 2 of 5Counting the Types (in Liars and Knights) Rating: 2.50
Posted on 2007-05-31 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 4 of 5The Irrational Units Digit (in Numbers) Rating: 3.00
Posted on 2007-05-21 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Always Divisible (in Just Math) Rating: 4.00
Posted on 2007-05-20 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 3 of 5Who Said What? (in Liars and Knights) Rating: 4.50
Posted on 2007-05-17 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 1 of 5Two Digit Average (in Numbers) Rating: 3.25
Posted on 2007-05-04 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Calendar Cubes pt 4 (in Word Problems) Rating: 4.50
Posted on 2007-04-30 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 3 of 5Two Semicircles (in Shapes) Rating: 2.33
Posted on 2007-04-27 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 2 of 5Matrix Identity (in Just Math)
Posted on 2007-04-26 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 4 of 5Greater Than Game (in Games) Rating: 3.33
Posted on 2007-04-24 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Square Patterns (in Shapes) Rating: 2.00
Posted on 2007-04-20 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 2 of 5Basic Statistics 2 (in Numbers) Rating: 3.00
Posted on 2007-04-20 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 2 of 5Almost a Cube (in Shapes) Rating: 2.50
Posted on 2007-04-17 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 3 of 5The Incredible Shrinking Word (in Word Problems)
Posted on 2007-04-16 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 4 of 5A Point in a Triangle (in Geometry) Rating: 3.00
Posted on 2007-04-12 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 4 of 5Sins of the Gambler 2 (in Probability)
Posted on 2007-04-05 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Perplexus Cryptarithm Puzzle (in Numbers)
Posted on 2007-03-31 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 2 of 5Basic Statistics (in Numbers)
Posted on 2007-03-26 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 4 of 5Incongruency (in Geometry) Rating: 4.00
Posted on 2007-03-23 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5At Fault Coverage (in Shapes) Rating: 2.00
Posted on 2007-03-22 by Brian Smith (Solution Posted, 9 Comments)
Difficulty: 2 of 5Basic Factoring (in Just Math) Rating: 3.00
Posted on 2007-03-21 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 2 of 54x4 Sudoku (in Logic) Rating: 3.50
Posted on 2007-03-19 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 3 of 5What Is The Number? (in Logic) Rating: 3.00
Posted on 2007-03-16 by Brian Smith (Solution Posted, 12 Comments)
Difficulty: 4 of 5Next Numbers Please 8 (in Sequences) Rating: 4.00
Posted on 2007-03-15 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 3 of 5Two Logicians Lockout (in Logic) Rating: 4.00
Posted on 2007-03-13 by Brian Smith (Solution Posted, 9 Comments)
Difficulty: 3 of 5Four Coins and Three Weighings (in Weights and Scales) Rating: 4.33
Posted on 2007-03-08 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 3 of 5Hello My Name is . . . (in Liars and Knights) Rating: 3.00
Posted on 2007-03-06 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 2 of 5Fair Pairs (in Probability) Rating: 4.67
Posted on 2007-03-05 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 3 of 5Two Logicians, Four Numbers (in Logic) Rating: 4.00
Posted on 2006-01-03 by Brian Smith (Solution Posted, 14 Comments)
Difficulty: 1 of 5Sinking Ball (in Science) Rating: 2.00
Posted on 2006-01-03 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 3 of 5Isosceles Trapezoid (in Geometry)
Posted on 2006-01-02 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 4 of 5The Sum of Three Cubes (in Shapes) Rating: 2.00
Posted on 2005-12-20 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 2 of 5No Fault Coverage (in Shapes) Rating: 3.00
Posted on 2005-12-18 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 5 of 5A Self Intersecting Curve (in Calculus) Rating: 4.50
Posted on 2005-12-16 by Brian Smith (Solution Posted, 9 Comments)
Difficulty: 2 of 5Colored Blocks (in Shapes)
Posted on 2005-12-12 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 4 of 5More Referential Numbers (in Numbers) Rating: 4.00
Posted on 2005-12-10 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Product Rule (in Calculus) Rating: 4.00
Posted on 2005-11-30 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 3 of 5Cylindrical Slice (in Calculus)
Posted on 2005-11-25 by Brian Smith (Solution Posted, 13 Comments)
Difficulty: 3 of 5Polyomino Puzzle (in Shapes) Rating: 3.67
Posted on 2005-11-22 by Brian Smith (Solution Posted, 21 Comments)
Difficulty: 4 of 5Six Squares (in Numbers) Rating: 3.80
Posted on 2005-11-18 by Brian Smith (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Two Magic Squares (in Numbers) Rating: 4.50
Posted on 2005-11-15 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 4 of 5100 Chords (in Geometry) Rating: 4.00
Posted on 2005-11-11 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 3 of 5I Only Need Two (in Weights and Scales) Rating: 3.50
Posted on 2005-11-09 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 4 of 5Zero to 100 with 12345 (in Just Math) Rating: 2.00
Posted on 2005-10-29 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Morse Code Puzzle (in General) Rating: 3.00
Posted on 2005-10-27 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 3 of 5Dividing A Grid (in Numbers) Rating: 2.00
Posted on 2005-10-25 by Brian Smith (Solution Posted, 9 Comments)
Difficulty: 4 of 5Measure that angle V (in Geometry)
Posted on 2005-10-24 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Covering A Circle (in Shapes) Rating: 3.33
Posted on 2005-10-21 by Brian Smith (Solution Posted, 11 Comments)
Difficulty: 2 of 5An Easier Fill the Grid (in Numbers) Rating: 2.50
Posted on 2005-10-18 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 5 of 5Centrifugal Balance II (in General) Rating: 4.29
Posted on 2005-10-18 by Brian Smith (No Solution Yet, 30 Comments)
Difficulty: 3 of 5A Perplexing Expression (in Just Math) Rating: 3.50
Posted on 2005-10-14 by Brian Smith (Solution Posted, 18 Comments)
Difficulty: 4 of 5Word Meld Square (in Word Problems) Rating: 4.25
Posted on 2005-10-12 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 3 of 5Wrapping an Equilateral Triangle (in Geometry) Rating: 3.50
Posted on 2005-10-10 by Brian Smith (Solution Posted, 15 Comments)
Difficulty: 2 of 5Two sets of Coins (in Weights and Scales) Rating: 3.50
Posted on 2005-10-07 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 2 of 5Six Seven Eight (in Just Math)
Posted on 2005-10-05 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 2 of 5Pawns to stay put (in Games) Rating: 3.83
Posted on 2005-10-03 by Brian Smith (Solution Posted, 15 Comments)
Difficulty: 2 of 5Election Polls (in Liars and Knights) Rating: 2.60
Posted on 2005-09-30 by Brian Smith (Solution Posted, 9 Comments)
Difficulty: 2 of 5Marriages (in Liars and Knights) Rating: 2.60
Posted on 2005-09-24 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Self-Referential Numbers (in Numbers) Rating: 3.40
Posted on 2005-09-23 by Brian Smith (Solution Posted, 17 Comments)
Difficulty: 3 of 5Maximum Triangle (in Calculus) Rating: 1.50
Posted on 2005-09-19 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 4 of 5Next Numbers Please #7 (in Sequences) Rating: 3.00
Posted on 2005-09-15 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 4 of 5One or Two Fake Coins (in Weights and Scales) Rating: 3.67
Posted on 2005-09-13 by Brian Smith (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Next Numbers Please #6 (in Sequences) Rating: 3.00
Posted on 2005-09-09 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Pumpkins 2 (in Numbers) Rating: 3.00
Posted on 2005-09-08 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 3 of 5A Three Way Scale (in Weights and Scales) Rating: 4.00
Posted on 2005-09-05 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 3 of 5ABSENT TONE (in Numbers) Rating: 4.50
Posted on 2005-09-02 by Brian Smith (Solution Posted, 18 Comments)
Difficulty: 2 of 5The Difference Scale (in Weights and Scales) Rating: 4.33
Posted on 2005-07-01 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 4 of 5Twelve Coins and a Broken Scale (in Weights and Scales) Rating: 3.33
Posted on 2005-06-24 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 3 of 5Water and Oil (in Weights and Scales) Rating: 3.00
Posted on 2005-06-21 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Next Numbers Please #5 (in Sequences)
Posted on 2004-12-05 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 3 of 5Sequence of Squares 2 (in Sequences) Rating: 2.67
Posted on 2004-12-01 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 5 of 5Ellipses and Circles (in Geometry) Rating: 4.00
Posted on 2004-11-29 by Brian Smith (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Center Digits (in Numbers) Rating: 2.25
Posted on 2004-11-28 by Brian Smith (Solution Posted, 15 Comments)
Difficulty: 4 of 5Pack the Box 2 (in Shapes) Rating: 3.75
Posted on 2004-11-24 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 5 of 5Moon Experiment (in Science) Rating: 2.40
Posted on 2004-11-22 by Brian Smith (Solution Posted, 22 Comments)
Difficulty: 2 of 5Ten Five-Letter Words (in Cryptography) Rating: 3.50
Posted on 2004-11-18 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 5 of 5Next Numbers Please #4 (in Sequences) Rating: 3.00
Posted on 2004-11-16 by Brian Smith (Solution Posted, 13 Comments)
Difficulty: 3 of 5Insane Chess King (in Games) Rating: 2.50
Posted on 2004-11-16 by Brian Smith (Solution Posted, 11 Comments)
Difficulty: 3 of 5Up to 35 (in Just Math) Rating: 3.50
Posted on 2004-11-14 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 3 of 5The Card Sorting Machine (in Algorithms) Rating: 3.00
Posted on 2004-11-12 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Speaking Volumes (in Numbers) Rating: 3.17
Posted on 2004-11-10 by Brian Smith (Solution Posted, 18 Comments)
Difficulty: 4 of 5Permuting a Square (in General) Rating: 4.29
Posted on 2004-11-08 by Brian Smith (Solution Posted, 9 Comments)
Difficulty: 3 of 5Ordering Pairs (in Numbers) Rating: 3.75
Posted on 2004-11-06 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 4 of 5169 (in Numbers) Rating: 2.50
Posted on 2004-11-04 by Brian Smith (Solution Posted, 13 Comments)
Difficulty: 4 of 5Measure that angle IV (in Geometry) Rating: 3.67
Posted on 2004-11-02 by Brian Smith (Solution Posted, 21 Comments)
Difficulty: 4 of 5Marble Game (in Probability) Rating: 4.20
Posted on 2004-11-01 by Brian Smith (Solution Posted, 12 Comments)
Difficulty: 3 of 5Department Managers (in Liars and Knights) Rating: 3.29
Posted on 2004-10-31 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 4 of 5A Different Magic Square (in Numbers) Rating: 4.25
Posted on 2004-10-29 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Visiting Day at the Asylum (in Liars and Knights) Rating: 3.00
Posted on 2004-10-27 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Three at a Time (in General) Rating: 3.50
Posted on 2004-10-26 by Brian Smith (Solution Posted, 23 Comments)
Difficulty: 3 of 5Three Cups (in Weights and Scales) Rating: 2.17
Posted on 2004-10-25 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5On The Edge (in Geometry) Rating: 3.00
Posted on 2004-10-24 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Select an Item (in Algorithms) Rating: 3.25
Posted on 2004-10-22 by Brian Smith (Solution Posted, 13 Comments)
Difficulty: 3 of 5No Rotation Dissection (in Shapes) Rating: 3.33
Posted on 2004-10-19 by Brian Smith (No Solution Yet, 25 Comments)
Difficulty: 2 of 5Jumping Coins (in General) Rating: 3.00
Posted on 2004-10-18 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 2 of 5Equiangular Hexagons (in Shapes) Rating: 3.40
Posted on 2004-10-15 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 4 of 5Flipping Coins (in Probability) Rating: 3.71
Posted on 2004-10-13 by Brian Smith (Solution Posted, 26 Comments)
Difficulty: 3 of 5Five Sentences (in Logic) Rating: 3.15
Posted on 2004-10-12 by Brian Smith (Solution Posted, 33 Comments)
Difficulty: 4 of 5Embezzlement (in Liars and Knights) Rating: 3.00
Posted on 2004-10-11 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Candy Box (in Numbers) Rating: 3.50
Posted on 2004-10-08 by Brian Smith (Solution Posted, 17 Comments)
Difficulty: 3 of 5A New Solid (in Shapes) Rating: 4.13
Posted on 2004-10-05 by Brian Smith (Solution Posted, 19 Comments)
Difficulty: 4 of 5Measure that angle III (in Geometry) Rating: 3.20
Posted on 2004-09-07 by Brian Smith (Solution Posted, 25 Comments)
Difficulty: 2 of 5Another game of nim (in Games) Rating: 3.00
Posted on 2004-09-02 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 3 of 5Quiz Results (in Logic) Rating: 3.22
Posted on 2004-09-02 by Brian Smith (Solution Posted, 29 Comments)
Difficulty: 2 of 5Measure that angle II (in Geometry) Rating: 2.67
Posted on 2004-09-01 by Brian Smith (Solution Posted, 16 Comments)
Difficulty: 2 of 5Moving Furniture (in General) Rating: 2.33
Posted on 2004-08-30 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 4 of 5Unknown Digits (in Numbers) Rating: 3.67
Posted on 2004-08-11 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 2 of 5Using Cards as Dice (in Probability) Rating: 2.75
Posted on 2004-08-09 by Brian Smith (Solution Posted, 9 Comments)
Difficulty: 2 of 5Two Fields (in Shapes) Rating: 2.25
Posted on 2004-08-06 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 2 of 5Sharing a Plot (in Geometry) Rating: 2.80
Posted on 2004-08-05 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 4 of 5Five Weights and a Broken Scale (in Weights and Scales) Rating: 3.56
Posted on 2004-08-02 by Brian Smith (Solution Posted, 17 Comments)
Difficulty: 4 of 5Logic and Stamps (in Logic) Rating: 2.50
Posted on 2004-07-31 by Brian Smith (Solution Posted, 17 Comments)
Difficulty: 3 of 5A Tighter Fit (in Shapes) Rating: 2.00
Posted on 2004-07-29 by Brian Smith (Solution Posted, 19 Comments)
Difficulty: 2 of 5Jack's Ladder (in Shapes) Rating: 2.67
Posted on 2004-07-27 by Brian Smith (Solution Posted, 22 Comments)
Difficulty: 3 of 5Four Weights (in Weights and Scales) Rating: 3.50
Posted on 2004-07-25 by Brian Smith (Solution Posted, 33 Comments)
Difficulty: 3 of 5Different Sums (in Numbers) Rating: 3.25
Posted on 2004-07-22 by Brian Smith (Solution Posted, 17 Comments)
Difficulty: 3 of 5Renumbered Dice (in Probability) Rating: 3.17
Posted on 2004-07-20 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 4 of 5A Point and a Cube (in Geometry) Rating: 4.00
Posted on 2004-07-16 by Brian Smith (No Solution Yet, 23 Comments)
Difficulty: 3 of 5A Keg of Wine (in Just Math) Rating: 3.00
Posted on 2004-07-14 by Brian Smith (Solution Posted, 26 Comments)
Difficulty: 2 of 5A Common Vertex (in Shapes) Rating: 3.00
Posted on 2004-07-12 by Brian Smith (Solution Posted, 18 Comments)
Difficulty: 2 of 5Yet Another 0=1 (in Calculus) Rating: 1.50
Posted on 2004-07-08 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 3 of 5Step Function (in Calculus)
Posted on 2004-07-07 by Brian Smith (Solution Posted, 7 Comments)
Difficulty: 3 of 5Contest Results (in Liars and Knights) Rating: 2.67
Posted on 2004-07-04 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 2 of 5Wrenches (in Weights and Scales) Rating: 2.83
Posted on 2004-07-02 by Brian Smith (Solution Posted, 13 Comments)
Difficulty: 3 of 5Consecutive Integer Sums (in Numbers) Rating: 4.33
Posted on 2004-06-28 by Brian Smith (Solution Posted, 22 Comments)
Difficulty: 3 of 5A Cup Of Coffee (in Weights and Scales) Rating: 4.25
Posted on 2004-06-25 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 2 of 5Sequence of Squares (in Sequences) Rating: 2.67
Posted on 2004-06-23 by Brian Smith (Solution Posted, 2 Comments)
Difficulty: 3 of 5Not A Magic Square (in Numbers) Rating: 4.33
Posted on 2004-06-19 by Brian Smith (Solution Posted, 14 Comments)
Difficulty: 3 of 5Mileage (in Numbers) Rating: 3.00
Posted on 2004-06-16 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 2 of 5Handshakes (in Numbers)
Posted on 2004-06-14 by Brian Smith (Solution Posted, 14 Comments)
Difficulty: 3 of 5Another Point In A Square (in Geometry) Rating: 3.25
Posted on 2004-06-11 by Brian Smith (Solution Posted, 16 Comments)
Difficulty: 2 of 5950 (in Tricks) Rating: 3.50
Posted on 2004-06-10 by Brian Smith (Solution Posted, 18 Comments)
Difficulty: 3 of 5Random Number Generator (in Algorithms) Rating: 2.00
Posted on 2004-06-08 by Brian Smith (Solution Posted, 26 Comments)
Difficulty: 2 of 5Mixing Paint (in Weights and Scales) Rating: 3.00
Posted on 2004-06-06 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 2 of 5Gloves (in Numbers) Rating: 4.17
Posted on 2004-06-03 by Brian Smith (Solution Posted, 30 Comments)
Difficulty: 5 of 5Next Numbers Please #3 (in Sequences) Rating: 3.91
Posted on 2004-06-01 by Brian Smith (Solution Posted, 30 Comments)
Difficulty: 3 of 5Moving Day (in Calculus) Rating: 3.83
Posted on 2004-05-26 by Brian Smith (Solution Posted, 31 Comments)
Difficulty: 3 of 5The Last Diamond (in Probability) Rating: 2.80
Posted on 2004-05-25 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 2 of 5Fraction Magic Square (in Numbers) Rating: 3.67
Posted on 2004-05-22 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 3 of 5A Coin Game (in Probability) Rating: 3.00
Posted on 2004-05-20 by Brian Smith (Solution Posted, 11 Comments)
Difficulty: 3 of 5Square Divisions (in Shapes) Rating: 3.67
Posted on 2004-05-18 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 3 of 5Next Numbers Please #2 (in Sequences) Rating: 2.83
Posted on 2004-03-08 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 3 of 5Open By Majority (in General) Rating: 4.14
Posted on 2004-03-03 by Brian Smith (Solution Posted, 45 Comments)
Difficulty: 3 of 5Unit Cubes (in Shapes) Rating: 3.83
Posted on 2004-02-02 by Brian Smith (Solution Posted, 15 Comments)
Difficulty: 5 of 5Fill the Grid (in Numbers) Rating: 3.63
Posted on 2004-01-21 by Brian Smith (Solution Posted, 28 Comments)
Difficulty: 3 of 5Sorting Coins (in Weights and Scales) Rating: 3.33
Posted on 2004-01-18 by Brian Smith (Solution Posted, 11 Comments)
Difficulty: 3 of 5Sequence Fill In (in Sequences) Rating: 3.50
Posted on 2004-01-13 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 3 of 5Number Rectangle (in Just Math) Rating: 4.50
Posted on 2004-01-08 by Brian Smith (Solution Posted, 3 Comments)
Difficulty: 3 of 5Three Sequences (in Sequences) Rating: 3.00
Posted on 2004-01-06 by Brian Smith (Solution Posted, 9 Comments)
Difficulty: 4 of 5Pack the Box (in Shapes) Rating: 3.33
Posted on 2004-01-04 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 2 of 5Swap (in Algorithms) Rating: 3.29
Posted on 2004-01-02 by Brian Smith (Solution Posted, 11 Comments)
Difficulty: 4 of 5Blindfolded (in Liars and Knights) Rating: 4.33
Posted on 2003-12-30 by Brian Smith (Solution Posted, 23 Comments)
Difficulty: 3 of 5Two Encrypted Questions (in Cryptography) Rating: 2.20
Posted on 2003-12-22 by Brian Smith (Solution Posted, 4 Comments)
Difficulty: 5 of 5Spheres in 4-D (in Calculus) Rating: 3.20
Posted on 2003-12-20 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 4 of 5Ten at a Bridge (in General) Rating: 3.43
Posted on 2003-07-28 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 3 of 5A Bag of Fake Coins (in Weights and Scales) Rating: 4.14
Posted on 2003-07-25 by Brian Smith (Solution Posted, 16 Comments)
Difficulty: 2 of 5Die Toss (in Probability) Rating: 4.38
Posted on 2003-07-24 by Brian Smith (Solution Posted, 11 Comments)
Difficulty: 2 of 5Permutation List (in Numbers) Rating: 3.67
Posted on 2003-07-23 by Brian Smith (Solution Posted, 6 Comments)
Difficulty: 2 of 5Party People (in Numbers) Rating: 2.67
Posted on 2003-07-21 by Brian Smith (Solution Posted, 8 Comments)
Difficulty: 3 of 5Reciprocal Equation #2 (in Just Math) Rating: 3.40
Posted on 2003-07-20 by Brian Smith (Solution Posted, 15 Comments)
Difficulty: 2 of 5Reciprocal Equation #1 (in Just Math) Rating: 3.25
Posted on 2003-07-18 by Brian Smith (Solution Posted, 5 Comments)
Difficulty: 2 of 5Two Geometric Series (in Just Math) Rating: 3.67
Posted on 2003-07-14 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 3 of 5Next Numbers Please (in Sequences) Rating: 3.63
Posted on 2003-07-11 by Brian Smith (Solution Posted, 14 Comments)
Difficulty: 2 of 5Identical Triplets (in Logic) Rating: 2.57
Posted on 2003-07-08 by Brian Smith (Solution Posted, 10 Comments)
Difficulty: 3 of 5Two Bank Robbers (in Liars and Knights) Rating: 3.25
Posted on 2003-06-27 by Brian Smith (Solution Posted, 6 Comments)
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