The below puzzles provides you a fun way to "invent" the key ideas on your own! Even if you fail to solve some puzzles, the time will not be lost as you will better appreciate the beauty and power of the underlying ideas.
- Bishops
- Rooks
- N Diagonals
- N Queens
- Three Hotels
- 21 Questions Game
- Two Adjacent Cells of Opposite Colors
- Florin coins
- Sums of Rows and Columns
- Hanoi Towers
- Magic Square
- Knights
- Numbers in 1…50 with no n and 2n
- Connect Points
- Local Maximum
- n2 + n + 41
- Balls in Boxes
- Numbers in Boxes
- Numbers on the ChessBoard
- Antimagic Square
- Piece on a ChessBoard
- Arthur's Book
- Switching Signs
- Summing up Digits
- 15-game