Bird Sudoku Level 39 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 39 Strategy
Medium Level 39 uses a 8x8 board with 21 perch cells, 8 blockers, and 10 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 39 Solution
Bird positions in the solution: R2C4, R3C7, R4C1, R4C5, R6C2, R7C6, R8C1, R8C4, R8C6.