This is a collection of some well known riddles. You can play "8 Queens", "Knight's tour" and "Solo". For all games variations are offered and you can also computer search for a solution. 这是一个收集的一些著名的谜语。你可以玩“皇后”，“骑士之旅”和“独奏”。对于所有的游戏变化提供，您也可以在电脑上搜索的解决方案。
v1.91 - Added Lights Out v1.9 - Added support for triangular and diagonal moves in Solo - On-board buttons (Undo, Restart, Solve) - A message appears when no more moves are left v1.62 - Changed icon - Fixed Solo custom boards bug v1.6 - New scores screen. - Better support of larger screens. - One new Solo theme. - Option for displaying connecting lines in Knight's tour. v1.5 New puzzle selector v1.4 Solo: Added custom boards feature. User can create and solve her own boards.