Solve.it

1. Queens :
- The most complete collection of mathematical chess problems. Try to solve problems such as "8 queens".Some new interesting variations are also included.

2. Knight's Tour :
- Knight's Tour is an simple but challenging puzzle game.The game ends when there are no more moves allowed and your score is the number you reached in that point. You can also undo your last move anytime you want.

3. Solo Noble :
- Play the classic game as well as many variations
- Square, Square with diagonal moves and triangular boards supported
- Select one out of 3 different themes
- Create and play your own boards