LinkedIn Queens #816 Answer & Analysis

The puzzle begins with queens already fixed at R1C5 and R2C2. Because each row and column can only hold one queen, these givens immediately eliminate a large cluster of neighboring cells.

Once the top rows are cleaned up, the orange region near the upper middle narrows to a single valid square. Place the next queen at R3C4, which also keeps row 3 and column 4 unique.

The light-gray region in the middle resolves next. R4C7 is the only square that fits the row, column, and no-touching constraints together, so place the queen there.

The large lavender band in the middle of the board now has a single workable square. R5C3 fits cleanly without touching the queens already placed and completes that row's color-region requirement.

With the center established, the lower half becomes much easier to read. The purple region below resolves at R6C8, and the blue region below it takes R7C1, keeping both rows and columns unique.

The last open rows are solved by the final pair of forced placements: R8C9 and R9C6. That completes the full LinkedIn Queens answer for #816 with one queen in every row, column, and color region.