2026-07-18
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Puzzle guide
Full breakdown using the Pattern lab format — row-by-row placements, region scans, and strategy notes.
Overview
LinkedIn Queens #809 is the LinkedIn Queens daily for July 18, 2026. Queens is LinkedIn's logic puzzle: place exactly one queen in every row, column, and colored region on a 9×9 board, with no two queens touching—even diagonally. This page includes the live board, a solved-board view, and a step-by-step Solution walkthrough. Difficulty: Hard. Estimated solve time: 6–10 min.
Answer
Final queen coordinates for this board:
R1C9, R2C4, R3C6, R4C8, R5C5, R6C2, R7C7, R8C3, R9C1
Several color regions span only a few cells — scan those regions first because they often force a queen into a single row or column.
Analysis
Board classification LinkedIn Queens #809. Dimensions 9×9. Region sample count 9. Observed pattern: tight-region board. Placement vector: R1C9, R2C4, R3C6, R4C8, R5C5, R6C2, R7C7, R8C3, R9C1.
Board spotlight: Several color regions span only a few cells — scan those regions first because they often force a queen into a single row or column. Region sizes range from 3 to 17 cells — smaller regions often pin a queen to a single row intersection.
Sample placement 1: R1C9. Constraint class: elimination. Row 1, column 9 is the forced queen once region 1, row, column, and touch rules are applied together.
Sample placement 2: R2C4. Constraint class: elimination. Row 2, column 4 is the forced queen once region 3, row, column, and touch rules are applied together.
Sample placement 3: R3C6. Constraint class: elimination. Row 3, column 6 is the forced queen once region 4, row, column, and touch rules are applied together.
Sample placement 4: R4C8. Constraint class: regionPin. Region 5 only touches row 4 once on this board, so its queen must land at column 8.
Sample placement 5: R5C5. Constraint class: elimination. Row 5, column 5 is the forced queen once region 6, row, column, and touch rules are applied together.
Sample placement 6: R6C2. Constraint class: elimination. Row 6, column 2 is the forced queen once region 7, row, column, and touch rules are applied together.
Sample placement 7: R7C7. Constraint class: rowScan. After eliminations, row 7 has one legal square left — column 7.
Sample placement 8: R8C3. Constraint class: elimination. Row 8, column 3 is the forced queen once region 9, row, column, and touch rules are applied together.
Sample placement 9: R9C1. Constraint class: rowScan. After eliminations, row 9 has one legal square left — column 1.
Lab result: Tight-region board. Coordinates R1C9, R2C4, R3C6, R4C8, R5C5, R6C2, R7C7, R8C3, R9C1.
Rows
Placement insight
Row 1, column 9 is the forced queen once region 1, row, column, and touch rules are applied together.
Solving note
Placing here claims row 1, column 9, and region 1. Auto X marks will block 80 other cells from holding another queen in those units. Watch for elimination patterns on similar boards.
Placement insight
Row 2, column 4 is the forced queen once region 3, row, column, and touch rules are applied together.
Solving note
Placing here claims row 2, column 4, and region 3. Auto X marks will block 80 other cells from holding another queen in those units. Watch for elimination patterns on similar boards.
Placement insight
Row 3, column 6 is the forced queen once region 4, row, column, and touch rules are applied together.
Solving note
Placing here claims row 3, column 6, and region 4. Auto X marks will block 80 other cells from holding another queen in those units. Watch for elimination patterns on similar boards.
Placement insight
Region 5 only touches row 4 once on this board, so its queen must land at column 8.
Solving note
Placing here claims row 4, column 8, and region 5. Auto X marks will block 80 other cells from holding another queen in those units. Watch for region Pin patterns on similar boards.
Placement insight
Row 5, column 5 is the forced queen once region 6, row, column, and touch rules are applied together.
Solving note
Placing here claims row 5, column 5, and region 6. Auto X marks will block 80 other cells from holding another queen in those units. Watch for elimination patterns on similar boards.
Placement insight
Row 6, column 2 is the forced queen once region 7, row, column, and touch rules are applied together.
Solving note
Placing here claims row 6, column 2, and region 7. Auto X marks will block 80 other cells from holding another queen in those units. Watch for elimination patterns on similar boards.
Placement insight
After eliminations, row 7 has one legal square left — column 7.
Solving note
Placing here claims row 7, column 7, and region 8. Auto X marks will block 80 other cells from holding another queen in those units. Watch for row Scan patterns on similar boards.
Placement insight
Row 8, column 3 is the forced queen once region 9, row, column, and touch rules are applied together.
Solving note
Placing here claims row 8, column 3, and region 9. Auto X marks will block 80 other cells from holding another queen in those units. Watch for elimination patterns on similar boards.
Placement insight
After eliminations, row 9 has one legal square left — column 1.
Solving note
Placing here claims row 9, column 1, and region 2. Auto X marks will block 80 other cells from holding another queen in those units. Watch for row Scan patterns on similar boards.
Verification
Optimal placement vector R1C9, R2C4, R3C6, R4C8, R5C5, R6C2, R7C7, R8C3, R9C1. Constraint distribution: elimination, elimination, elimination, regionPin, elimination, elimination, rowScan, elimination, rowScan.
Takeaways
Min 3, max 17 — tight-region board.
elimination@R1; elimination@R2; elimination@R3; regionPin@R4; elimination@R5; elimination@R6; rowScan@R7; elimination@R8; rowScan@R9
R1C9, R2C4, R3C6, R4C8, R5C5, R6C2, R7C7, R8C3, R9C1