Bird Sudoku Level 91 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 91 Strategy
Medium Level 91 uses a 8x8 board with 21 perch cells, 7 blockers, and 7 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 91 Solution
Bird positions in the solution: R1C3, R1C5, R2C1, R3C6, R3C8, R6C2, R6C4, R8C1, R8C5.