Preface, 1. Two Different Lengths, 2. Crossing the River, 3. Making a Die, 4. What Comes Next?, 5. Diamond Puzzle, 6. The Water Puzzle, 7. The Opposite of Puzzle 6, 8. Three Times More, 9. Triangular Arithmetic, 10. Triangular Solitaire, 11. The Same Area, 12. Lose Those Squares, 13. Two Choice Question, 14. Triangulation, 15. Rock, Paper, Scissors, 16. Four Solutions of Four Pieces I, 17. Four Solutions of Four Pieces II, 18. Square, 19. Simultaneous Equations, 20. Even Number Sequence, 21. Age Guessing, 22. Divide by Four, 23. Can You?, 24. To Have or Not to Have, 25. Pentominos, 26. Pandigital (Komachi) Fraction I, 27. Pandigital (Komachi) Fraction II, 28. Triangulate a Square, 29. Challenge by Don Knuth, 30. Square Numbers, 31. Interlocking Pieces?, 32. Change of Heart, 33. Fill It Up With Coins, 34. LYM, 35. Bug House, 36. What's Missing?, 37. Connecting the Dots, 38. Equal Distance, 39. Palindrome Time, 40. Pandigital (Komachi) Time, 41. TROMINO, 42. Switching Trains, 43. Building Highways, 44. Congruent Parts, 45. All Gone?, 46. Change Direction, 47. Arrest Him, 48. Pandigital Olympic Circles, 49. Massive Multiplication, 50. Cut and Rearrange a Cross, 51. The Curious Door Sign, 52. Triangle Struggle, 53. Place the Coins, 54. Cut and Paste I, 55. Cut and Paste II, 56. Trick Name Card I, 57. Trick Name Card II, 58. Uniform Division, 59. Three Contacting Matchsticks, 60. Find the Rule, 61. Typewriter, 62. Seven Straight Lines, 63. Four and a Half Tatami Mats, 64. Five Consecutive Numbers, 65. Chocolate, 66. A Go Stone Puzzle, 67. Coins in Two Dimensions, 68. Make a Square, 69. What Comes Next? II, 70. Equally Divided, 71. Wild Pig Maze, 72. FlipIt, 73. A Shining Star, 74. Escape from the Tower, 75. A Broken Calculator I, 76. A Broken Calculator II, 77. Switching Frogs, 78. All Different, 79. Odd Numbers and Even Numbers, 80. Magic Trick, 81. Time Calculation Using Pandigitals (Komachi), 82. Time Calculation Using Pandigitals Plus 0 (Komachi), 83. How Many Loops?, 84. Up and Down Maze, 85. Jumping Go Stones, 86. Moving Matchsticks, 87. One Place the Same, 88. The Same Product, 89. No Squares, 90. Taking a Walk, 91. From 1 to N, 92. Self-Satisfaction, 93. From 1 to 10, 94. Height and Weight, 95. Tail Becomes Head, 96. Is the Opposite Also True?, 97. Multi-Level Crossing, 98. Squeeze-In! I, 99. Squeeze-In! II, 100. UN-Balance, 101. Surprised Solomon
