Bird Sudoku Level 55 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 55 Strategy
Medium Level 55 uses a 7x7 board with 19 perch cells, 7 blockers, and 8 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 55 Solution
Bird positions in the solution: R1C6, R1C7, R2C1, R2C2, R2C4, R4C6, R6C5, R7C7.