Use a hidden singles solver optimized for multicore processors to solve a Sudoku with a box dimension of 65 (approximately 8.6M blanks). Resolving one blank per second would take 100 days!
Puzzle Approved Text file of Sudoku puzzle for 4225x4225 grid.
Puzzle Solution Approved Step by step solution in Text file of Sudoku puzzle for 4225x4225 grid.
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