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Puzzles

1. reverse a string - word by word - posted Wednesday, February 07, 2001
2. 100 doors in a row - posted Friday, February 09, 2001
3. red marbles, blue marbles - posted Sunday, February 11, 2001
4. bumblebee - posted Monday, February 12, 2001
5. int atoi( char* pStr ) - posted Tuesday, February 13, 2001
6. daughter's ages - posted Wednesday, February 14, 2001
7. palindromes - posted Thursday, February 15, 2001
8. sum it up - posted Friday, February 16, 2001
9. pirates - posted Saturday, February 17, 2001
10. fogcreek programmers - posted Sunday, February 18, 2001
11. bad king - posted Monday, February 19, 2001
12. jelly beans - posted Tuesday, February 20, 2001
13. bridge - posted Wednesday, February 21, 2001
14. card trick without the trick - posted Thursday, February 22, 2001
15. pirates revisited - posted Monday, February 26, 2001
16. fuse on fire - posted Tuesday, February 27, 2001
17. dave's on fire - posted Tuesday, February 27, 2001
18. chessboard - posted Thursday, March 01, 2001
19. easy river crossing - posted Monday, March 05, 2001
20. shapes - posted Tuesday, March 06, 2001
21. webloggers - posted Thursday, March 08, 2001
22. hard river crossing - posted Friday, March 09, 2001
23. classic weighing - posted Monday, March 12, 2001
24. monty hall problem - posted Tuesday, March 13, 2001
25. gold chain - posted Thursday, March 15, 2001
26. surgeons - posted Monday, March 19, 2001
27. clock - posted Tuesday, March 20, 2001
28. mountain man - posted Thursday, March 22, 2001
29. treasure island - posted Monday, March 26, 2001
30. screwy pirates - posted Friday, March 30, 2001
31. ants on a triangle - posted Tuesday, April 03, 2001
32. one mile south - posted Monday, April 09, 2001
33. cube - posted Wednesday, April 18, 2001
34. more hat puzzles - posted Monday, April 30, 2001
35. coin on a table - posted Friday, May 04, 2001
36. noodles - posted Monday, May 07, 2001
37. heaven - posted Tuesday, May 08, 2001
38. flipping coins - posted Thursday, May 10, 2001
39. pennies - posted Monday, May 14, 2001
40. linked list - posted Friday, May 18, 2001
41. last ball - posted Wednesday, May 23, 2001
42. coin rolls - posted Wednesday, May 30, 2001
43. calendar cubes - posted Tuesday, June 05, 2001
44. boys and girls - posted Tuesday, June 12, 2001
45. painfully easy - posted Friday, June 15, 2001
46. chinese emperor - posted Sunday, June 17, 2001
47. nuggets - posted Monday, June 18, 2001
48. orbs - posted Tuesday, June 19, 2001
49. salary - posted Monday, June 25, 2001
50. world series - posted Tuesday, July 17, 2001
51. 100 factorial - posted Friday, July 20, 2001
52. oil mogul - posted Tuesday, July 24, 2001
53. vienna - posted Monday, July 30, 2001
54. duel - posted Friday, August 03, 2001
55. hen - posted Tuesday, August 21, 2001
56. mensa - posted Wednesday, August 22, 2001
57. box o' numbers - posted Monday, August 27, 2001
58. even harder coin problem - posted Monday, September 10, 2001
59. line mirage - posted Wednesday, November 14, 2001
60. moving circles - posted Friday, November 16, 2001
61. black dots - posted Monday, November 19, 2001
62. technical riddles - posted Thursday, January 24, 2002
63. x implies y - posted Wednesday, February 06, 2002
64. XOR using NAND gates - posted Friday, March 01, 2002
65. smart cookie - posted Wednesday, March 06, 2002
66. wanna play? - posted Wednesday, April 10, 2002
67. crazy guy on the airplane - posted Friday, April 19, 2002
68. chameleons - posted Thursday, April 25, 2002
69. railroad bridge - posted Thursday, May 09, 2002
70. cars on the road - posted Wednesday, May 22, 2002
71. switches puzzle - posted Friday, March 28, 2003