20
votes
Removing either 1 or a prime number of checkers each turn. Who wins?
game
nim
asked Mar 5 at 4:01
puzzling.stackexchange.com
20
votes
Dissect the figure into two congruent parts.
mathematics
geometry
dissection
asked Apr 22 at 20:18
puzzling.stackexchange.com
19
votes
Can you get all the coins no matter where they are placed?
mathematics
logical-deduction
combinatorics
asked Apr 17 at 20:21
puzzling.stackexchange.com
19
votes
Can you pack these tetracubes to form a rectangular block with at least one odd side length?
mathematics
geometry
packing
asked May 27, 2023 at 18:38
puzzling.stackexchange.com
19
votes
Cover the 7x7 square with the 12 L-shaped pieces
tiling
asked Oct 23, 2024 at 6:13
puzzling.stackexchange.com
18
votes
Place some or all of the White Chess pieces on a chessboard in such a way that none of them can legally move
chess
checkerboard
construction
asked Sep 25, 2024 at 10:13
puzzling.stackexchange.com
18
votes
Maximizing the common value of both sides of an equation
mathematics
calculation-puzzle
optimization
formation-of-numbers
asked Aug 30, 2024 at 8:05
puzzling.stackexchange.com
18
votes
Helen helped Liam become best carpenter north of _?
word
knowledge
asked Oct 12, 2023 at 7:06
puzzling.stackexchange.com
18
votes
Coloring of a 5 x 5 chessboard
checkerboard
asked Jan 28, 2024 at 23:56
puzzling.stackexchange.com
18
votes
Make the three products equal and as large as possible
mathematics
optimization
asked Mar 29, 2024 at 4:06
puzzling.stackexchange.com
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