Bird Sudoku Level 42 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 42 Strategy
Medium Level 42 uses a 7x7 board with 19 perch cells, 5 blockers, and 8 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 42 Solution
Bird positions in the solution: R1C2, R1C6, R2C6, R3C1, R5C4, R5C6, R6C1, R7C7.