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Borderland Sudoku (1273)
Instruction:
Apply classic sudoku rules. Each marked cell indicates the number of the cells in the contiguous block of cells with the same parity (odd/even) as that cell.
Reference:
WPF
(1)
Examples:
WPF Sudoku GP 2026 - Round 3
(242)
Parent puzzle:
Sudoku
Related puzzles:
Parity circles Sudoku
Parity Sudoku