LinkedIn Queens answer for Saturday, August 29: #851

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 Orange region sits entirely in row 3, so no other queen can go in row 3. The Purple and Red regions sit entirely in rows 1 and 2, so no other queen can go in those rows. The Purple, Yellow and Teal regions sit entirely in columns 4, 5 and 6, so no other queen can go in those columns. The Red, Pink and Gray regions sit entirely in columns 7, 8 and 9, so no other queen can go in those columns. The Orange region has only one open square left, so its queen goes in row 3, column 3 (R3C3).
2. Step 2: Column 4 has only one open square left, so its queen goes in row 9 (Teal region) (R9C4).
3. Step 3: The Blue region sits entirely in column 1, so no other queen can go in column 1. A queen in row 2, column 6 would leave the Red region with no open square, so that square is out. Column 6 has only one open square left, so its queen goes in row 4 (Yellow region) (R4C6).
4. Step 4: The Blue region has only one open square left, so its queen goes in row 5, column 1 (R5C1).
5. Step 5: The Pink region has only one open square left, so its queen goes in row 8, column 7 (R8C7).
6. Step 6: The Green region has only one open square left, so its queen goes in row 7, column 2 (R7C2).
7. Step 7: The Red region has only one open square left, so its queen goes in row 2, column 8 (R2C8).
8. Step 8: The Purple region has only one open square left, so its queen goes in row 1, column 5 (R1C5).
9. Step 9: The Gray region has only one open square left, so its queen goes in row 6, column 9 (R6C9).

Answer coordinates: R1C5, R2C8, R3C3, R4C6, R5C1, R6C9, R7C2, R8C7, R9C4