Daily Queens Puzzle — July 5, 2026

Sunday · 15×15 · Toughest · Hard · 26 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 39 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 26 deductions and needs expert techniques, including testing a queen, drawing on 8 distinct techniques. The first queen you can place for certain is E1. The queens resolve in the order E1 → M12 → O2 → C7 → L8 → N15 → K6 → J14 → I9 → G10 → B11 → F3 → A5 → D4 → H13. Every step follows by logic, so you never have to guess.

Techniques this board needs

Full solution, step by step (26 deductions)

Single-cell region essential
Single-cell region. This colour covers only one cell, so its queen goes there. Place a queen at E1.
Single-cell region essential
Single-cell region. This colour covers only one cell, so its queen goes there. Place a queen at M12.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at O2.
Region line lock essential
Region line lock. This colour must use column 4, so nothing else can. This reasons over column 4. Rules out D5, D6, D7, D8, D9, D10, D11, D13 and 2 more.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at C7.
Region line lock essential
Region line lock. This colour must use column 14, so nothing else can. This reasons over column 14. Rules out N4, N5, N6, N8, N9, N10.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at L8.
Region line lock essential
Region line lock. This colour must use row 14, so nothing else can. This reasons over row 14. Rules out A14, B14, F14, G14, H14, I14, N14.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at N15.
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.
Shared diagonal neighbour intermediate
Shared diagonal neighbour. Every remaining option for this colour touches these cells, so they are out. Rules out J13, K13.
Lines use the same regions intermediate
Lines use the same regions. 3 rows can only be filled by 3 colours, using them up. This reasons over row 9 and row 10 and row 11. Rules out F4, G4, H4, J4, F5, G5, H5, I5 and 7 more.
Ruled out either way expert
Ruled out either way. These cells are ruled out no matter where this colour's queen goes. Rules out B3.
Test a queen expert
Test a queen. A queen here would leave another colour with nowhere to go, so it is out. Rules out A4.
Test a queen expert
Test a queen. A queen here would leave another colour with nowhere to go, so it is out. Rules out B4.
Region line lock essential
Region line lock. This colour must use column 1, so nothing else can. This reasons over column 1. Rules out A9, A10, A11.
Test a queen expert
Test a queen. A queen here would leave another colour with nowhere to go, so it is out. Rules out A6.
Last cell in a line essential
Last cell in a line. Row 6 has one legal cell left, so its queen goes there. Place a queen at K6. This reasons over row 6.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at J14.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at I9.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at G10.
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 F3.
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 D4.
Forced queen essential
Forced queen. This colour has one legal cell left, so its queen goes there. Place a queen at H13.

Answer: queens at E1, M12, O2, C7, L8, N15, K6, J14, I9, G10, B11, F3, A5, D4, H13.