Bird Sudoku Level 152 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 152 Strategy
Hard Level 152 uses a 9x9 board with 29 perch cells, 8 blockers, and 8 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 152 Solution
Bird positions in the solution: R1C7, R2C3, R2C4, R3C1, R4C9, R6C1, R7C3, R9C2, R9C6, R9C8, R9C9.