A Sudoku With Only Six Empty Circles?!
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56:33
"I'll Halve What She's Halving!"
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1:27:04
This Puzzle Is NOT Genuinely Approachable
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1:38:11
Solving The Unsolvable: 9x9 From Just 3x3!
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1:08:30
A Late-Night Sudoku Solve, after Drinking Wine!
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1:25:18
The Sudoku With Only 4 Known Solvers
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15:31
The Reciprocals of Primes - Numberphile
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49:49
Way beyond the golden ratio: The power of AB=A+B (Mathologer masterclass)
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1:37:56