Daily Queens Puzzle — March 29, 2026

Sunday · 13×13 · Toughest · Medium · 25 deductions

13 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 13x13 board split into 13 colour regions, needing 13 queens: one per row, one per column, one per region, none touching. Regions run from 2 to 31 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 13x13 board takes 25 deductions and needs the intermediate group-lock techniques, drawing on 7 distinct techniques. It opens on row 11, ruling cells out before any queen goes down. The queens resolve in the order B8 → M7 → J6 → G9 → L10 → F11 → E13 → D4 → H1 → C2 → K3 → A5 → I12. Every step follows by logic, so you never have to guess.

Techniques this board needs

Full solution, step by step (25 deductions)

Region line lock essential
Region line lock. This colour must use row 11, so nothing else can. This reasons over row 11. Rules out A11, B11, C11, D11, E11, H11, I11, J11 and 3 more.
Region line lock essential
Region line lock. This colour must use column 9, so nothing else can. This reasons over column 9. Rules out I1, I2, I3, I4, I5, I6, I7, I8 and 2 more.
Shared diagonal neighbour intermediate
Shared diagonal neighbour. Every remaining option for this colour touches these cells, so they are out. Rules out F10, G10, F12, G12.
Shared diagonal neighbour intermediate
Shared diagonal neighbour. Every remaining option for this colour touches these cells, so they are out. Rules out H12, J12, H13, J13.
Two-region group lock intermediate
Two-region group lock. 2 colours fit in only 2 rows, reserving them. This reasons over row 12 and row 13. Rules out A12, B12, C12, D12, K12, L12, M12, A13 and 6 more.
Region line lock essential
Region line lock. This colour must use row 10, so nothing else can. This reasons over row 10. Rules out A10, B10, C10, D10, E10, H10, J10, K10.
Region line lock essential
Region line lock. This colour must use row 9, so nothing else can. This reasons over row 9. Rules out A9, B9, C9, D9, E9, F9, H9, K9 and 2 more.
Shared diagonal neighbour intermediate
Shared diagonal neighbour. Every remaining option for this colour touches these cells, so they are out. Rules out L7.
Two-region group lock intermediate
Two-region group lock. 2 colours fit in only 2 columns, reserving them. This reasons over column 13 and column 12. Rules out M1, M2, M3, M4, M5, M6, L1, L2 and 4 more.
Multi-region group lock intermediate
Multi-region group lock. 3 colours fit in only 3 rows, reserving them. This reasons over row 6 and row 7 and row 8. Rules out A6, B6, C6, E6, F6, G6, H6, K6 and 6 more.
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.
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 3. Rules out B1, B2, B3, B4, B5, D2, D3, D5.
Last cell in a line essential
Last cell in a line. Column 2 has one legal cell left, so its queen goes there. Place a queen at B8. This reasons over column 2.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at M7.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at J6.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at G9.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at L10.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at F11.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at E13.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at D4.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at H1.
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 K3.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at A5.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at I12.

Answer: queens at B8, M7, J6, G9, L10, F11, E13, D4, H1, C2, K3, A5, I12.