Numberphile | A Sudoku Secret to Blow Your Mind - Numberphile @numberphile | Uploaded 9 months ago | Updated 4 hours ago
Simon Anthony (from Cracking the Cryptic) reveals the Phistomephel Ring - a hidden feature of ALL Sudoku puzzles. Second video is here: youtu.be/h8AulgkjyIc
More links & stuff in full description below ↓↓↓

Cracking the Cryptic: youtube.com/c/CrackingTheCryptic

Another Numberphile video about Sudoku: youtu.be/MlyTq-xVkQE

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