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Level 28 guide: Iceland (hard)

Fire, ice and long summer nights. A 9×9 board. Colors are named in the steps below, and rows and columns are counted from the top left starting at 1. This guide spoils the solution, so try the level first.

Play level 28 About Iceland

The board

Step by step

13 deductions lead to the 9 stamps. Each placed stamp also rules out its row, column, touching cells and the rest of its region.

1. The peach region has only one cell left: row 7, column 9. Place the stamp there.
2. The mint region can only hold its stamp in row 8, so every other cell in row 8 cannot hold a stamp (4 cells ruled out).
3. The stone region can only hold its stamp in row 9, so every other cell in row 9 cannot hold a stamp (3 cells ruled out).
4. Columns 1 and 2 must all put their stamps in the teal region and the pink region, so the other cells of the teal region and the pink region cannot hold a stamp (8 cells ruled out).
5. Column 3 has only one cell left: row 2. Place the stamp there.
6. Column 4 has only one cell left: row 9. Place the stamp there.
7. The rose region can only hold its stamp in column 7, so every other cell in column 7 cannot hold a stamp (4 cells ruled out).
8. The periwinkle region has only one cell left: row 5, column 8. Place the stamp there.
9. The mint region has only one cell left: row 8, column 6. Place the stamp there.
10. The green region has only one cell left: row 3, column 5. Place the stamp there.
11. The rose region has only one cell left: row 1, column 7. Place the stamp there.
12. The teal region has only one cell left: row 4, column 1. Place the stamp there.
13. The pink region has only one cell left: row 6, column 2. Place the stamp there.

Final solution