LinkedIn Queens answer for Thursday, July 23: #814

Queens solution, step by step

Each LinkedIn Queens step places one queen and closes its row, its column, its region and the squares touching it.

1. Step 1: The Blue region sits entirely in column 8, so no other queen can go in column 8. The Green region sits entirely in row 2, so no other queen can go in row 2. The Blue region has only one open square left, so its queen goes in row 1, column 8 (R1C8).
2. Step 2: The Orange region sits entirely in row 3, so no other queen can go in row 3. The Teal region sits entirely in column 1, so no other queen can go in column 1. The Green region has only one open square left, so its queen goes in row 2, column 2 (R2C2).
3. Step 3: The Purple region has only one open square left, so its queen goes in row 5, column 3 (R5C3).
4. Step 4: A queen in row 3, column 4 would leave the Yellow region with no open square, so that square is out. The Orange region has only one open square left, so its queen goes in row 3, column 7 (R3C7).
5. Step 5: Row 4 has only one open square left, so its queen goes in column 5 (Yellow region) (R4C5).
6. Step 6: Row 6 has only one open square left, so its queen goes in column 6 (Red region) (R6C6).
7. Step 7: The Pink region has only one open square left, so its queen goes in row 8, column 4 (R8C4).
8. Step 8: The Teal region has only one open square left, so its queen goes in row 7, column 1 (R7C1).

Answer coordinates: R1C8, R2C2, R3C7, R4C5, R5C3, R6C6, R7C1, R8C4