Queens Grid

Daily Queens Puzzle — March 22, 2026

Sunday · 15×15 · Toughest · Hard · 22 deductions

15 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 15x15 board split into 15 colour regions, needing 15 queens: one per row, one per column, one per region, none touching. Regions run from 1 to 41 cells.

The daily board is the same for everyone and gets harder as the week goes on: Sunday is set to toughest. Every daily puzzle has one solution and needs no guessing.

How this board is solved

Solving this 15x15 board takes 22 deductions and needs expert techniques, including testing a queen, drawing on 6 distinct techniques. The first queen you can place for certain is J4. The queens resolve in the order J4 → E5 → O11 → N2 → B10 → C1 → D3 → M9 → L6 → K15 → I14 → H8 → F7 → G13 → A12. Every step follows by logic, so you never have to guess.

Techniques this board needs

Full solution, step by step (22 deductions)
  1. Single-cell region essential

    Single-cell region. This colour covers only one cell, so its queen goes there. Place a queen at J4.

  2. Single-cell region essential

    Single-cell region. This colour covers only one cell, so its queen goes there. Place a queen at E5.

  3. Single-cell region essential

    Single-cell region. This colour covers only one cell, so its queen goes there. Place a queen at O11.

  4. Region line lock essential

    Region line lock. This colour must use column 1, so nothing else can. This reasons over column 1. Rules out A1, A2, A3, A6, A7, A8, A9, A10.

  5. Region line lock essential

    Region line lock. This colour must use row 1, so nothing else can. This reasons over row 1. Rules out D1, F1, G1, H1, I1, K1, L1, M1 and 1 more.

  6. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at N2.

  7. Shared diagonal neighbour intermediate

    Shared diagonal neighbour. Every remaining option for this colour touches these cells, so they are out. Rules out L9.

  8. Multi-region group lock intermediate

    Multi-region group lock. 3 colours fit in only 3 columns, reserving them. This reasons over column 2 and column 3 and column 4. Rules out B9, B14, B15, C9, C10, C14, C15, D7 and 6 more.

  9. Ruled out either way expert

    Ruled out either way. These cells are ruled out no matter where this colour's queen goes. Rules out H7, G8.

  10. Multi-region group lock intermediate

    Multi-region group lock. 4 colours fit in only 4 rows, reserving them. This reasons over row 12 and row 13 and row 14 and row 15. Rules out B12, C12, D12, G12, B13, C13.

  11. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at B10.

  12. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at C1.

  13. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at D3.

  14. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at M9.

  15. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at L6.

  16. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at K15.

  17. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at I14.

  18. Shared diagonal neighbour intermediate

    Shared diagonal neighbour. Every remaining option for this colour touches these cells, so they are out. Rules out F8.

  19. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at H8.

  20. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at F7.

  21. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at G13.

  22. Forced queen essential

    Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at A12.

Answer: queens at J4, E5, O11, N2, B10, C1, D3, M9, L6, K15, I14, H8, F7, G13, A12.