Queens Puzzle
One crown per row, column and color — none touching, not even diagonally.
Click a cell to cycle: empty → × → crown.
Tip: × marks are just a memory aid — only crown placement is checked.
About this puzzle
One of LinkedIn's viral 2025 puzzle games, now with several unlimited-play clone sites. Divide the board into N colored regions; place one crown per row/column/region with none touching (including diagonally) — the region constraint, not a full diagonal ban, is what forces a unique answer.
This version
Three built-in puzzles (6×6/7×7/8×8), each verified by a solver to have exactly one solution before shipping.