Bird Sudoku Level 145 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 145 Strategy
Hard Level 145 uses a 9x9 board with 29 perch cells, 9 blockers, and 9 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 145 Solution
Bird positions in the solution: R1C1, R1C3, R2C5, R2C9, R4C4, R4C8, R5C1, R6C4, R7C6, R8C9, R9C9.