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Overlapping Sudoku (66)
Instruction:
Apply classic sudoku rules. Additionally two grids are overlapping.
Reference:
WPF
(1)
Examples:
WPF Sudoku GP 2017 - Round 3
(4)
WPF Sudoku GP 2019 - Round 4
(127)
Parent puzzle:
Sudoku
Related puzzles:
Overlapping Irregular Sudoku