[Back]
+-----+ |Q | | v | | Q| +-----+
+-----+ |9 | | o | | 9| +-----+
+-----+ |10 | | & | | 10| +-----+
+-----+ |3 | | v | | 3| +-----+
+-----+ |5 | | ^ | | 5| +-----+
+-----+ +-----+ +-----+ +-----+ +-----+ |# # #| |# # #| |# # #| |# # #| |# # #| |# # #| |# # #| |# # #| |# # #| |# # #| |# # #| |# # #| |# # #| |# # #| |# # #| +-----+ +-----+ +-----+ +-----+ +-----+