Kendoku

 rules are: (1) the 12×12 puzzle uses the numbers 1-12. (2) in each row and in each column each number can appear only once (just like in Sudoku). (3) each "cage" (the blocks with the thick border) shows a result and an operation (addition: +, subtraction: -, multiplication: ×, or division: :). The operation applied to the numbers in the cage should produce the result shown. Note that for subtraction and division the order is not fixed .

所有跟帖： 

• For those who don't know the rules, -rustican- ♂ (39 bytes) () 03/17/2011 postreply 15:20:00

• 回複：Kendoku -wushuihe- ♂ (168 bytes) () 03/18/2011 postreply 09:33:58

• smart, Please, you&rustican check my second proof for SAP Q. -jinjing- ♀ (24 bytes) () 03/21/2011 postreply 16:48:25