A place for every queen.

Expert Reinas — a 10 × 10 Queens puzzle

The biggest daily board. Some steps ask you to test a queen in your head and rule it out when it breaks a rule.

Building today's Expert board…

What this level asks

Expert adds one-step tests: suppose a queen goes on a square, and if that leaves a row, column or region with no room, cross the square out.

Place exactly one queen in every row, every column and every colored region.
Queens cannot touch, not even at a corner. Queens farther apart may share a diagonal.
Use crosses to rule out squares and find a place for every queen.

For example, a queen two squares away along a diagonal is fine, but a queen on the very next diagonal square touches and is not allowed.

Every board has as many rows, columns and regions as queens. Each needs exactly one.

One queen in every row and every column. One queen in every region. Regions have a letter as well as a colour.

Not allowed: these two queens touch at a corner.

Allowed: these two queens share a long diagonal but do not touch.

Crosses are your own notes. The game never adds them for you.

On Expert, some steps ask you to try one queen in your head and rule it out when it breaks a rule. You never need to guess deeper than that.