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Show Queens #842 answer
♛♛♛♛♛♛♛♛♛
R1C2, R2C6, R3C9, R4C1, R5C8, R6C5, R7C3, R8C7, R9C4
Why the Queens #842 placement checks out
The complete placement is R1C2, R2C6, R3C9, R4C1, R5C8, R6C5, R7C3, R8C7, R9C4. It contains 9 queens on a 9×9 board.
- Row and column check: every row is occupied once, and the occupied columns are 2, 6, 9, 1, 8, 5, 3, 7, 4 with no duplicates.
- Region check: the queens occupy 9 distinct colored regions.
- Adjacency check: no pair of queens touches horizontally, vertically, or diagonally.
How to check this board
Place queens so every row, every column, and every colored region contains exactly one, with no two queens touching—even diagonally.
- Place exactly one queen in each row.
- Place exactly one queen in each column and colored region.
- Queens cannot occupy adjacent cells, including diagonal neighbors.
Complete solution data was saved from an official public LinkedIn game response and checked automatically. These checks validate the stored result; they do not reconstruct a human solving attempt.