2in3x2

https://scrapbox.io/files/61d415de37c653001d985680.png

機能

角での確定マス

https://scrapbox.io/files/61f54bd261378a001fb16b48.png

(3+,3+)での確定マス

https://scrapbox.io/files/61d457204ff089001f96ea69.png

https://scrapbox.io/files/61d8c4ebc23d6d001d9a5137.png

辺での(2)、(3+)

https://scrapbox.io/files/61f54ea7235c90001d690b7e.png

https://scrapbox.io/files/61f54eaa0f3089001d8dec2a.png

問題