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Girandola Sudoku

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Girandola Sudoku: 9 Extra Cells Cut Givens from 24 to 21

Six dug girandola grids: a nine-cell pinwheel that replaces 3.5 givens, bans one digit from six cells at once, and passes once in 750 boards. Rules inside.

#Girandola Sudoku#Sudoku Variants#Sudoku Rules
2026-08-22