Cage-splitting
From Sudopedia
Jump to navigationJump to searchUsing the 45 rule, sometimes multiple cells are sticking out of the selected houses. When this happens, you can split the cage into 2 smaller cages.
Example
The green cage can be split in 2 smaller cages FG2 and G34.
13 + 18 + 24 + 14 + 11 + 15 - 90 = 5, so G34 = 5 and FG2 = 6.
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