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Fortress Sudoku (35)
Instruction:
Apply classic sudoku rules. A digit placed in a shaded cell must be strictly greater than digits placed in orthogonally adjacent unshaded cells.
Reference:
WPF
(1)
Examples:
WPF Sudoku GP 2014 - Round 6
(117)
WPF Sudoku GP 2015 - Round 5
(108)
WPF Sudoku GP 2016 - Round 5
(102)
WPF Sudoku GP 2017 - Round 2
(3)
WPF Sudoku GP 2017 - Round 3
(4)
WPF Sudoku GP 2017 - Round 5
(6)
WPF Sudoku GP 2018 - Round 2
(59)
WPF Sudoku GP 2018 - Round 4
(61)
WPF Sudoku GP 2019 - Round 6
(129)
WPF Sudoku GP 2019 - Round 7
(130)
WPF Sudoku GP 2019 - Round 8
(131)
WPF Sudoku GP 2020 - Round 3
(150)
WPF Sudoku GP 2020 - Round 5
(152)
WPF Sudoku GP 2021 - Round 7
(163)
WPF Sudoku GP 2021 - Round 8
(164)
WPF Sudoku GP 2022 - Round 6
(178)
Parent puzzle:
Sudoku
Child puzzles:
Clone Fortress Sudoku