LinkedIn Queens answer for Thursday, September 10: #863

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 Purple region sits entirely in column 1, so no other queen can go in column 1. The Orange region sits entirely in column 2, so no other queen can go in column 2. The Yellow region has only one open square left, so its queen goes in row 4, column 3 (R4C3).
2. Step 2: The Red region sits entirely in column 7, so no other queen can go in column 7. The Teal region sits entirely in column 8, so no other queen can go in column 8. The Green and Pink regions sit entirely in columns 5 and 6, so no other queen can go in those columns. Row 5 has only one open square left, so its queen goes in column 7 (Red region) (R5C7).
3. Step 3: Row 6 has only one open square left, so its queen goes in column 4 (Blue region) (R6C4).
4. Step 4: A queen in row 1, column 1 would leave the Orange region with no open square, so that square is out. Row 1 has only one open square left, so its queen goes in column 2 (Orange region) (R1C2).
5. Step 5: The Purple region has only one open square left, so its queen goes in row 3, column 1 (R3C1).
6. Step 6: The Green region has only one open square left, so its queen goes in row 2, column 6 (R2C6).
7. Step 7: The Pink region has only one open square left, so its queen goes in row 8, column 5 (R8C5).
8. Step 8: The Teal region has only one open square left, so its queen goes in row 7, column 8 (R7C8).

Answer coordinates: R1C2, R2C6, R3C1, R4C3, R5C7, R6C4, R7C8, R8C5