Queens Unlimited
No daily wait and no limit: 15,333 boards, every one checked by an exhaustive solver to have exactly one solution. Pick a size, and keep going as long as you like.
9 queens left to place.
Tap once to rule a cell out, twice to place a queen. Right-click marks an exclusion directly. Arrow keys move between cells.
What "unlimited" means here
Every board below is a real, pre-checked puzzle, not one generated on demand. That distinction matters: a generated board can turn out to have several solutions, or none, or to need a guess somewhere in the middle. Each of these has been run through an exhaustive solver and confirmed to have exactly one answer, and through the hint engine to confirm that answer is reachable by deduction alone.
| Size | Boards | Browse |
|---|---|---|
| 6x6 | 60 | 6x6 puzzles |
| 7x7 | 785 | 7x7 puzzles |
| 8x8 | 1,616 | 8x8 puzzles |
| 9x9 | 2,045 | 9x9 puzzles |
| 10x10 | 3,034 | 10x10 puzzles |
| 11x11 | 1,989 | 11x11 puzzles |
| 12x12 | 1,872 | 12x12 puzzles |
| 13x13 | 1,762 | 13x13 puzzles |
| 14x14 | 1,181 | 14x14 puzzles |
| 15x15 | 989 | 15x15 puzzles |
If you get stuck
Press Hint. It names the deduction that applies and highlights the cells it reads, rather than just revealing a queen — the point is to show you the move you missed. Every board here can be finished without guessing, so there is always one available. The techniques page explains each deduction in full, with a real board position demonstrating it.
Rated by what they demand
Difficulty here is not grid size. It is which deductions a board forces you to find, measured by solving every one and recording the hardest technique required. A tight 9×9 can be harder than a roomy 14×14.
Prefer one shared board a day, the way the LinkedIn version works? The daily puzzle is the same board for everyone, with difficulty rising through the week, and the archive holds every past one.