10×10 Queens Puzzle #457

About 10×10 Queens puzzle #457

This is level 457 of 500 in the 10×10 Queens puzzles (expert size). Place 10 crowns so that every row, every column and every colored region holds exactly one, with no two crowns touching — not even diagonally. Our logic engine rates it medium: the solution takes 14 deductions, using these techniques:

• When a region claims a whole row
• The one-spot region
• When a row claims a region
• Last cell standing in a row

← Level 456All 10×10 levelsLevel 458 →