level 13
This is a Nurikabe puzzle with a twist. You are now allowed to have 2×2 squares of black cells, but you may not have 5 consecutive black cells in a row or column. Credits to MellowMelon for creating this variation (or, at least, for posting the first line Nurikabes I’ve ever seen).
规则简单说明,1、可以2×2的黑格;2、不能行,列连续5个黑格。




















