4
4
4
4
4
4
4
Swordfish
Swordfish extends the X-Wing idea to three base lines spanning three cover lines — the digit is eliminated from the cover lines in every other row/column.
There's a move in row 1, row 4 and row 7.
Swordfish extends the X-Wing idea to three base lines spanning three cover lines — the digit is eliminated from the cover lines in every other row/column.
There's a move in row 1, row 4 and row 7.