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Puzzles
Mad Professor?
Points on a unit circle
Nim
Kontsevich’s puzzle
Matrix
Chessboard 1
Chessboard 2
100 prisoners problem
Countable prisoners problem
Dobble
Tile 1
Tile 2
line and point
111111…….
Zagier’s one sentence proof
Lights Out game
Three utilities problem
1 + √2
Box in box
Reference of Puzzles
Peter Winkler
Mathematical Puzzles
Anany Levitin, Maria Levitin
Algorithmic Puzzles
Takehiko Yasuda
Introduction to University Mathematics through Games
(in Japanese)
Proofs from THE BOOK
Ebima Lab’ YouTube video
3Blue1Brown
TED-Ed: Can You Solve This Riddle?
Math Puzzles by Others
Martin Deraux
Shuho Kanda
Junnosuke Koizumi
Others
Photo
My Laboratory (at 2025/08)
My Laboratory (before 2025/06)
Programming
Game of Life
Various sorting