Binary Crossnumber Puzzle - 01 (in General) Rating: 4.00 Posted on 2005-11-03 by Erik O. (Solution Posted, 10 Comments)
Are we odd for liking this, too? (in Cryptography) Rating: 3.33 Posted on 2005-08-30 by Erik O. (Solution Posted, 18 Comments)
Synograms (in Word Problems) Rating: 4.40 Posted on 2005-08-17 by Erik O. (No Solution Yet, 14 Comments)
Needle in a Haystack (in General) Rating: 1.88 Posted on 2005-08-17 by Erik O. (Solution Posted, 13 Comments)
Inverting Triangles (in Shapes) Rating: 2.14 Posted on 2005-08-15 by Erik O. (No Solution Yet, 15 Comments)
Saturn V (in Cryptography) Rating: 3.75 Posted on 2005-08-13 by Erik O. (Solution Posted, 4 Comments)
A Fruity Kind of Problem (in General) Rating: 3.67 Posted on 2005-08-10 by Erik O. (Solution Posted, 16 Comments)
How Long 'til Morning? (in General) Rating: 2.50 Posted on 2005-08-09 by Erik O. (Solution Posted, 22 Comments)
Just Key It In... (in Sequences) Rating: 3.50 Posted on 2005-08-06 by Erik O. (No Solution Yet, 6 Comments)
Knot or Not? (in Probability) Rating: 2.33 Posted on 2005-08-04 by Erik O. (Solution Posted, 17 Comments)
Et Tu, Brute? (in Sequences) Rating: 3.50 Posted on 2005-08-02 by Erik O. (Solution Posted, 18 Comments)
Another Pattern of Numbers (in Numbers) Rating: 4.00 Posted on 2005-07-29 by Erik O. (No Solution Yet, 17 Comments)
Thirds and Differences (in Numbers) Rating: 3.00 Posted on 2005-07-21 by Erik O. (No Solution Yet, 12 Comments)
No Incest, Please (in General) Rating: 3.60 Posted on 2005-07-18 by Erik O. (No Solution Yet, 14 Comments)
Three of These and Three of Those (in Word Problems) Rating: 3.00 Posted on 2005-07-14 by Erik O. (Solution Posted, 19 Comments)
Double Letters at the Front (in Word Problems) Rating: 2.29 Posted on 2005-07-11 by Erik O. (No Solution Yet, 29 Comments)
From a Balloon (in Science) Rating: 3.00 Posted on 2005-07-07 by Erik O. (No Solution Yet, 36 Comments)
Square Rotation (in Shapes) Rating: 2.20 Posted on 2005-07-02 by Erik O. (Solution Posted, 5 Comments)
More Scales and Measures (in Weights and Scales) Posted on 2005-06-28 by Erik O. (Solution Posted, 6 Comments)
Five People on Two Bridges (in Logic) Rating: 3.80 Posted on 2005-06-25 by Erik O. (Solution Posted, 41 Comments)
What time is it again? (in General) Rating: 3.00 Posted on 2005-06-19 by Erik O. (Solution Posted, 8 Comments)
L.A. to Hawaii (in Science) Rating: 2.00 Posted on 2005-06-17 by Erik O. (Solution Posted, 11 Comments)
Artful Arithmetic (in Just Math) Rating: 2.50 Posted on 2005-04-01 by Erik O. (Solution Posted, 3 Comments)
What's wrong with CDs? (in Calculus) Rating: 4.00 Posted on 2005-03-30 by Erik O. (Solution Posted, 11 Comments)
Magic Keyring (in Sequences) Rating: 3.00 Posted on 2005-03-28 by Erik O. (Solution Posted, 6 Comments)
Sums of squares and stuff. (in Numbers) Posted on 2005-03-26 by Erik O. (Solution Posted, 16 Comments)
Prime Birthdays (in Just Math) Rating: 3.00 Posted on 2005-03-23 by Erik O. (Solution Posted, 2 Comments)
Prime Perimeter (in Logic) Rating: 2.82 Posted on 2005-03-11 by Erik O. (Solution Posted, 90 Comments)
How old did you say they were? (in Logic) Rating: 3.20 Posted on 2005-03-03 by Erik O. (Solution Posted, 31 Comments)
It ain't Fibonacci (in Sequences) Rating: 4.00 Posted on 2005-02-22 by Erik O. (Solution Posted, 10 Comments)
Another Simple Sequence (in Sequences) Rating: 3.60 Posted on 2004-12-22 by Erik O. (Solution Posted, 11 Comments)
A Pattern of Numbers (in Numbers) Rating: 4.00 Posted on 2004-12-16 by Erik O. (Solution Posted, 8 Comments)
Sequence of Musical Tones (in Algorithms) Rating: 3.83 Posted on 2004-12-14 by Erik O. (Solution Posted, 20 Comments)
1 To 15 in a 3x5 Array (in Numbers) Rating: 3.00 Posted on 2004-12-09 by Erik O. (Solution Posted, 11 Comments)
Triangular Cubes (in Probability) Rating: 3.00 Posted on 2004-12-04 by Erik O. (Solution Posted, 11 Comments)
When First the Marriage Knot was Ty'd (in Famous Riddles) Rating: 4.11 Posted on 2004-12-02 by Erik O. (Solution Posted, 24 Comments)
2 3 1 2 1 3 (in Numbers) Rating: 4.29 Posted on 2004-11-23 by Erik O. (Solution Posted, 10 Comments)
Four points on a Plane (in Shapes) Rating: 4.14 Posted on 2004-11-21 by Erik O. (Solution Posted, 15 Comments)
Prime Number Arithmetic (in Just Math) Rating: 4.13 Posted on 2004-11-19 by Erik O. (Solution Posted, 7 Comments)
The Logician's Birthday (in Logic) Rating: 3.54 Posted on 2004-11-17 by Erik O. (Solution Posted, 75 Comments)
About Two Pounds (in Cryptography) Rating: 3.29 Posted on 2004-11-09 by Erik O. (Solution Posted, 8 Comments)
I didn't do it. (in Liars and Knights) Rating: 1.73 Posted on 2004-11-04 by Erik O. (Solution Posted, 16 Comments)
The Watchdog (in Calculus) Rating: 3.40 Posted on 2004-10-28 by Erik O. (Solution Posted, 29 Comments)
