简单： 7XX36XXX8 X1XXXX5X6 3X518X92X XXXX16X9X XX3X4X7XX X5X73XXXX X34X712X9 1X2XXXX7X 5XXX93XX1 中等： X572XXX9X 8XXX5X6XX X69XXX235 3XXXX2XXX XXX6X7XXX XXX4XXXX1 271XXX85X XX4X8XXX2 X8XXX947X 难： 8XX9XXX2XXXX6XX1XXX1XX5XX4XX6X4X2X7X7XX3XXXX5X3X8XXX6XX8XX9XX1XXX3XX6XXXX7XXX3XX8http://sudoku.oubk.com/Sdk/index.htmlhttp://www.sudoku.name/index-cn.php
