Fiendish Logic Puzzles

If you are working your way through our book Fiendish Logic Puzzles, and you need to check your progress or get a hint for a particular puzzle, you've come to the right place! Just select the puzzle you're working on from the list below:

1. Tea Time

2. Rocket Launches

3. Wildlife Photography

4. Hockey Jerseys

5. Best in Show

6. Siren Songs

7. Gator Preserve

8. Lepidopterists

9. Taxi Fares

10. Ancient Impacts

11. Presidential Papers

12. Wooden Furniture

13. Late Night Diner

14. Street Repairs

15. Car Rentals

16. Haunted Houses

17. Train Schedules

18. Centenarians

19. Amusement Park

20. Fraternity Houses

21. Business is Booming

22. Sci-Fi Woodworkers

23. Varsity Baseball

24. Diplomatic Relations

25. Gold Miners

26. Hedge Funds

27. Mobile Apps

28. The Produce Aisle

29. Real Life Superheroes

30. Roman Emperors

31. Pasta Dinner

32. Shooting Stars

33. Free Diving

34. Segway Tours

35. Bowling League

36. Foreign Languages

37. Time for Dessert

38. Shell Collecting

39. Historical Homes

40. Senate Race

41. Particle Accelerators

42. Doctor Appointments

43. Major Leaguers

44. Ice Cream Shop

45. Astrological Tattoos

46. Passport Office

47. Hurricane History

48. Sunday Cleaning

49. Posting Packages

50. Environmental Science

51. Amphibian Enthusiasts

52. Bread and Cheese

53. Photographing Waterfalls

54. Going Batty

55. Golf Legends

56. Fancy Footwear

57. Anthropological Studies

58. Ancient Cultures

59. Eating Contests

60. Relief Missions

61. Green Cars

62. Skydivers

63. Fraidy Fliers

64. Jigsaw Puzzles

65. Buy Low, Sell High

66. Scuba Diving

67. Classroom Size

68. Custom Rings

69. Lunch Orders

70. Winter Forecasts

71. Endangered Species

72. International Flights

73. Dance Contest

74. Nobel Prize Winners

75. Darts Tournament

76. Soccer Stars

77. Prime Ministers

78. Translation Work

79. Grandma's Recipes

80. Coffee Shop

81. Film Festival

82. Sailboats

83. Classic Video Games

84. Old Trees

85. Deli Orders

86. Mushroom Picking

87. Tiny Homes

88. Digital Cameras

89. Overdue Library Books

90. New Arenas

91. Dinosaur Fossils

92. Shark Studies

93. Social Networking

94. Dinner at Chez Martin

95. Hiking Trails

96. Earthquake Research

97. College Scholarships

98. Stamp Collecting

99. Olympic Medals

100. Exoplanet Discoveries

Competition Timer

Forum
Records

Point score calculation change? Posted by: JoshGrams
September 1, 2026, 11:17 am

Point score calculation change? Posted by: ScalvinC
August 26, 2026, 7:40 pm

Fast solvers - any video?! Posted by: upenn420
August 26, 2026, 5:40 pm

New puzzles added for 2026 Posted by: NashvilleSCTheBest
August 24, 2026, 5:34 pm

New puzzles added for 2026 Posted by: trishinutila
August 22, 2026, 8:49 am

Third party spamware? Posted by: bagelhands
August 11, 2026, 3:31 pm

SoggyCactus set a new record of 101 seconds on puzzle #90382
September 1, 2026, 9:45 pm
losmond set a new record of 258 seconds on puzzle #82257
September 1, 2026, 9:43 pm
dawne1000 set a new record of 39 seconds on puzzle #72973
September 1, 2026, 9:28 pm
dawne1000 set a new record of 44 seconds on puzzle #95543
September 1, 2026, 9:23 pm
bluban set a new record of 175 seconds on puzzle #91778
September 1, 2026, 9:22 pm
bluban set a new record of 192 seconds on puzzle #86748
September 1, 2026, 9:11 pm