Bird Sudoku Level 122 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 122 Strategy
Hard Level 122 uses a 8x8 board with 27 perch cells, 8 blockers, and 7 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 122 Solution
Bird positions in the solution: R1C7, R3C1, R3C3, R4C5, R4C6, R4C8, R5C2, R7C6, R8C2, R8C8.