Daily Queens Puzzle — May 24, 2026

Sunday · 15×15 · Toughest · Medium · 25 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 53 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 25 deductions and needs the intermediate group-lock techniques, drawing on 8 distinct techniques. The first queen you can place for certain is I14. The queens resolve in the order I14 → E4 → F9 → H10 → N8 → M13 → O6 → L15 → K12 → J3 → A1 → C2 → B11 → D7 → G5. Every step follows by logic, so you never have to guess.

Techniques this board needs

Full solution, step by step (25 deductions)

Single-cell region essential
Single-cell region. This colour covers only one cell, so its queen goes there. Place a queen at I14.
Region line lock essential
Region line lock. This colour must use row 2, so nothing else can. This reasons over row 2. Rules out A2, D2, E2, F2, G2, H2, J2, K2 and 4 more.
Region line lock essential
Region line lock. This colour must use row 13, so nothing else can. This reasons over row 13. Rules out A13, B13, C13, D13, E13, F13, G13, K13 and 2 more.
Region line lock essential
Region line lock. This colour must use row 15, so nothing else can. This reasons over row 15. Rules out A15, B15, C15, D15, E15, F15, G15, K15.
Shared diagonal neighbour intermediate
Shared diagonal neighbour. Every remaining option for this colour touches these cells, so they are out. Rules out B1, C1, B3, C3.
Region line lock essential
Region line lock. This colour must use column 1, so nothing else can. This reasons over column 1. Rules out A5, A6, A7, A8, A9, A10, A11, A12.
Shared diagonal neighbour intermediate
Shared diagonal neighbour. Every remaining option for this colour touches these cells, so they are out. Rules out C11.
Shared diagonal neighbour intermediate
Shared diagonal neighbour. Every remaining option for this colour touches these cells, so they are out. Rules out M12, N12.
Two-region group lock intermediate
Two-region group lock. 2 colours fit in only 2 rows, reserving them. This reasons over row 11 and row 12. Rules out D11, E11, F11, G11, H11, J11, K11, N11 and 5 more.
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 B4, B9, B10, C4, C9, C10, D1, D3 and 6 more.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at E4.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at F9.
Line uses one region intermediate
Line uses one region. 1 columns can only be filled by 1 colours, using them up. This reasons over column 7. Rules out H1, H3, H5, H6, H7, H8, J1, J5 and 13 more.
Last cell in a line essential
Last cell in a line. Column 8 has one legal cell left, so its queen goes there. Place a queen at H10. This reasons over column 8.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at N8.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at M13.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at O6.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at L15.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at K12.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at J3.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at A1.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at C2.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at B11.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at D7.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at G5.

Answer: queens at I14, E4, F9, H10, N8, M13, O6, L15, K12, J3, A1, C2, B11, D7, G5.