Grandmaster · 500 levels

12×12 Queens Puzzles

The largest boards in the game: twelve crowns, twelve kingdoms and the longest deduction chains of any size. A true marathon.

Play level 1 Open in the library

12×12 at a glance

Levels: 500
Easy · Medium · Hard: 4 · 367 · 129
Average deductions: 17
Solutions per board: Exactly 1

Techniques you will need

Our logic engine records which deductions each board requires. Here is how often each technique appears across all 12×12 levels:

Tip: Zoom the board with the size slider and solve in sections — settle one corner before moving on.

All 500 12×12 levels

Pick any level — difficulty is shown by the dot: easy medium hard.

12×12 Queens puzzle FAQ

How hard are 12×12 Queens puzzles?

Of the 500 12×12 boards, 4 are rated easy, 367 medium and 129 hard by our logic engine, which counts the deductions each solution needs. A typical 12×12 board takes about 17 logical steps.

How do I solve a 12×12 Queens puzzle?

Place one crown in every row, column and colored region, with no two crowns touching. Zoom the board with the size slider and solve in sections — settle one corner before moving on. Every board can be solved without guessing, and the Hint button explains the next deduction.

Are all 12×12 puzzles free?

Yes. All 500 12×12 levels are free to play in your browser on desktop or mobile, with no account required. Your completed levels are saved on this device.