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Archive · Queens #27

Queens #27 (October 22, 2026): solution and step-by-step

The 9×9 Medium puzzle from Thursday, October 22, 2026. Play it first; the answer is folded below. Replays don't affect your streak.

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Queens #27 was the 9×9 medium board of Thursday, October 22, 2026. Our deduction solver, the same one behind the hint button, finishes it in 30 steps without guessing: 24 follow straight from the rules (a queen's neighbours, a line that already has its queen, a line with one free cell left), 6 come from confinement (a region squeezed into one row or column, or several regions sharing the same rows), and none need a “what if” check. The regions range from 3 to 19 cells; the smallest is lavender, and small regions are where the board opens up.

Queens #27 in numbers

Board9×9, Medium
Regions9, from 3 to 19 cells
Deduction steps30
Rule steps (neighbours, satisfied lines, last cell)24
Confinement steps6
“What if” contradictions0
Solver difficulty score10
How to start Queens #27: the first 12 deductions

Each step is a deduction a person can make, in the order our solver found them. Rows and columns are counted from the top-left corner.

  1. Cross out row 3, column 8. This cell touches every free cell of the lavender region — a queen here would leave the lavender region with no queen, so it's crossed out.

  2. Cross out 10 cells. The lavender region and the orchid region all fit inside columns 8 and 9, so those 2 columns' queens are theirs — every other cell in columns 8 and 9 is crossed out.

  3. Cross out 7 cells. Every free cell of the teal region is in column 7, so that region's queen must be there — the rest of column 7 is crossed out.

  4. Cross out row 8, column 6. This cell touches every free cell of column 7 — a queen here would leave column 7 with no queen, so it's crossed out.

  5. Cross out row 9, column 6. This cell touches every free cell of column 7 — a queen here would leave column 7 with no queen, so it's crossed out.

  6. Cross out 9 cells. The coral region, the sky region and the rose region all fit inside columns 4, 5, 6, so those 3 columns' queens are theirs — every other cell in columns 4, 5, 6 is crossed out.

  7. Queen at row 2, column 3. The mint region has only one free cell left — that must be its queen.

  8. Cross out 5 cells. Queens can't touch, not even diagonally — the cells around this queen are crossed out.

  9. Cross out 4 cells. Row 2 already has its queen — the rest of it is crossed out.

  10. Cross out 6 cells. Column 3 already has its queen — the rest of it is crossed out.

  11. Queen at row 1, column 1. Row 1 has only one free cell left — that must be its queen.

  12. Cross out 7 cells. Column 1 already has its queen — the rest of it is crossed out.

18 more steps follow the same pattern until the 9 queens are placed.

Queens #27 solution

Queens by row: row 1: column 1 (gold); row 2: column 3 (mint); row 3: column 9 (lavender); row 4: column 5 (coral); row 5: column 2 (lime); row 6: column 6 (sky); row 7: column 8 (orchid); row 8: column 4 (rose); row 9: column 7 (teal).

Back to the Queens archive, today's puzzle, or the rules and deductions used above.

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