Bird Sudoku Level 123 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 123 Strategy
Hard Level 123 uses a 8x8 board with 27 perch cells, 7 blockers, and 7 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 123 Solution
Bird positions in the solution: R1C8, R2C2, R2C6, R4C2, R6C1, R6C5, R6C8, R7C8, R8C1, R8C4.