This collection of puzzles, games and activities is designed to stimulate and challenge people of all ages who enjoy puzzles with a mathematical flavour. Many of the puzzles have a long history, while others are original. The subjects vary from matchsticks to magic squares, train shunting to river crossing, and chess to calculators. The second part of the book contains a commentary giving hints and solutions.This collection of puzzles, games and activities is designed to stimulate and challenge people of all ages who enjoy puzzles with a mathematical flavour. Many of the puzzles have a long history, while others are original. The subjects vary from matchsticks to magic squares, train shunting to river crossing, and chess to calculators. The second part of the book contains a commentary giving hints and solutions.This collection of puzzles, games and activities is designed to stimulate and challenge people of all ages who enjoy puzzles with a mathematical flavour. Many of the puzzles have a long history, while others are original. The subjects vary from matchsticks to magic squares, train shunting to river crossing, and chess to calculators. The second part of the book contains a commentary giving hints and solutions.Introduction; 1. Matchstick triangles; 2. A tricky river crossing; 3. The baffled engine driver; 4. Make your own dice; 5. Map folding; 6. The ingenious milkman; 7. Pawns on a chessboard; 8. Avoid three (a game for two players); 9. Two halves make a whole; 10. Cubism; 11. Matchstick squares; 12. Curves of pursuit (a geometric construction); 13. The misguided missiles (an extension of 12); 14. Pattern; 15. The army's predicament; 16. The farmer's sheep-pens; 17. The knight's dance; 18. The railway sidings; 19. The multi-coloured cube; 20. The jealous husbands; 21. The extension lead; 22. Hex (a game for two players); 23. The square, cross and circle; 24. The M?bius band (a practical activity); 25. The economical gardener; 26. How many triangles can you sel“r