九宫格数字游戏

|518|942|376|

|926|713|458|

|347|658|921|

| - + - + - |

|693|124|587|

|174|895|263|

|285|376|194|

| - + - + - |

|451|287|639|

|739|561|842|

|862|439|715|

* - *