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Logic problems. The solution to these problems does not usually require a lot of math, but will take some thinking until you find the right approach.
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Difficulty: 2 of 5 Latest: Set-Free Rating: 2.00
Place an A, B, or C in each empty cell below so that no three consecutive cells (horizonally, vertically or diagonally) contain a set consisting either of all three different (A, B, and C) letters or all the same letter.

C
B
B A
C A B

From Mensa Puzzle Calendar 2019 by Fraser Simpson, Workman Publishing, New York. Puzzle for December 20.
(No Solution Yet, 1 Comments) Submitted on 2020-01-20 by Charlie   
Page 2 of 43   << prev next >>    
Difficulty: 3 of 5From ab to ba | Rating: 3.00
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Difficulty: 2 of 5Enigma |
Posted on 2017-12-11 by Ady TZIDON (No Solution Yet, 2 Comments)
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Difficulty: 3 of 5An unsolved double murder |
Posted on 2017-09-08 by ollie (No Solution Yet, 0 Comments)
Difficulty: 2 of 5smallest large = largest small | Rating: 3.00
Posted on 2017-08-22 by Jer (No Solution Yet, 3 Comments)
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