Bird Sudoku Level 165 Hint
Pick a row, column, or habitat with a low remaining count, then check which of its perch cells are blocked by open diagonal flight lines.
Bird Sudoku Level 165 Strategy
Hard Level 165 uses a 8x8 board with 27 perch cells, 9 blockers, and 5 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 165 Solution
Bird positions in the solution: R1C8, R2C4, R2C8, R3C6, R5C3, R6C1, R6C5, R7C8, R8C2, R8C4.