Bird Sudoku Level 146 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 146 Strategy
Hard Level 146 uses a 9x9 board with 29 perch cells, 9 blockers, and 6 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 146 Solution
Bird positions in the solution: R2C5, R3C7, R4C9, R5C1, R6C5, R6C6, R6C9, R7C9, R8C6, R8C9, R9C3.