Queens Grid

10×10 Queens Puzzles

3,034 boards at this size, each needing 10 queens: one per row, one per column, one per colour region, none touching. They run from 10 to 30 deductions.

10 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.

A 10x10 board split into 10 colour regions, needing 10 queens: one per row, one per column, one per region, none touching. Regions run from 1 to 16 cells.

By difficulty

How this board is solved

Solving this 10x10 board takes 10 deductions and needs only the basic deductions, drawing on 2 distinct techniques. The first queen you can place for certain is A4. The queens resolve in the order A4 → H5 → G3 → B9 → C6 → D1 → I2 → E8 → F10 → J7. Every step follows by logic, so you never have to guess.

Techniques this board needs

Full solution, step by step (10 deductions)
  1. Single-cell region essential

    Single-cell region. This colour covers only one cell, so its queen goes there. Place a queen at A4.

  2. Single-cell region essential

    Single-cell region. This colour covers only one cell, so its queen goes there. Place a queen at H5.

  3. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at G3.

  4. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at B9.

  5. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at C6.

  6. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at D1.

  7. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at I2.

  8. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at E8.

  9. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at F10.

  10. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at J7.

Answer: queens at A4, H5, G3, B9, C6, D1, I2, E8, F10, J7.