LinkedIn Queens answer for Thursday, September 17: #870

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 row 1, so no other queen can go in row 1. The Green region sits entirely in row 2, so no other queen can go in row 2. The Yellow region sits entirely in row 3, so no other queen can go in row 3. The Red region sits entirely in column 7, so no other queen can go in column 7. The Pink region sits entirely in row 6, so no other queen can go in row 6. The Teal region sits entirely in row 7, so no other queen can go in row 7. The Blue and Red regions sit entirely in rows 4 and 5, so no other queen can go in those rows. Column 8 has only one open square left, so its queen goes in row 8 (Orange region) (R8C8).
2. Step 2: Column 1 has only one open square left, so its queen goes in row 1 (Purple region) (R1C1).
3. Step 3: Column 2 has only one open square left, so its queen goes in row 4 (Blue region) (R4C2).
4. Step 4: The Red region has only one open square left, so its queen goes in row 5, column 7 (R5C7).
5. Step 5: The Pink region has only one open square left, so its queen goes in row 6, column 5 (R6C5).
6. Step 6: The Yellow region has only one open square left, so its queen goes in row 3, column 6 (R3C6).
7. Step 7: The Teal region has only one open square left, so its queen goes in row 7, column 3 (R7C3).
8. Step 8: The Green region has only one open square left, so its queen goes in row 2, column 4 (R2C4).

Answer coordinates: R1C1, R2C4, R3C6, R4C2, R5C7, R6C5, R7C3, R8C8