Group Puzzles (Sudoku Generalized) Difficult Sudoku Twelve Logic Puzzles, Volume 1.
  1. Teaching Logic using Group Puzzles
  2. Solving Group Logic Puzzles
  3. Twelve Difficult (DiffLev 10-11) Sudoku-12 Puzzles (numbers 1-12)
  4. Twelve Difficult (DiffLev 12-14) Sudoku-12 Puzzles (numbers 13-24)
  5. Twelve Difficult (DiffLev 9-11) Sudoku-12up Puzzles (numbers 25-36)
  6. Twelve Difficult (DiffLev 12-14) Sudoku-12up Puzzles (numbers 37-48)
  7. Twelve Difficult (DiffLev 9-11) HyperSudoku-12 Puzzles (numbers 49-60)
  8. Twelve Difficult (DiffLev 12-14) HyperSudoku-12 Puzzles (numbers 61-72)
  9. Six Difficult (DiffLev 9-11) tpsmith Puzzles (numbers 73-78)
  10. Six Difficult (DiffLev 12-14) tpsmith Puzzles (numbers 79-84)
  11. Six Difficult (DiffLev 9-11) tpsmith-silly Puzzles (numbers 85-90)
  12. Six Difficult (DiffLev 12-14) tpsmith-silly Puzzles (numbers 91-96)
  13. Six Difficult (DiffLev 9-11) tpsmith-surprised Puzzles (numbers 97-102)
  14. Six Difficult (DiffLev 12-14) tpsmith-surprised Puzzles (numbers 103-108)
  15. Two Difficult (DiffLev 10) tpsmith-serious Puzzles (numbers 109-110)
  16. Two Difficult (DiffLev 12-13) tpsmith-serious Puzzles (numbers 111-112)
  17. Two Difficult (DiffLev 13-14) Ambidextrous Puzzles (numbers 113-114)
  18. Two Difficult (DiffLev 9-12) Backpointers Puzzles (numbers 115-116)
  19. Two Difficult (DiffLev 11-12) Columnarized Puzzles (numbers 117-118)
  20. Two Difficult (DiffLev 11-13) Combustively Puzzles (numbers 119-120)
  21. Two Difficult (DiffLev 9-12) Configurated Puzzles (numbers 121-122)
  22. Two Difficult (DiffLev 9) Considerably Puzzles (numbers 123-124)
  23. Two Difficult (DiffLev 10-12) Demonstrably Puzzles (numbers 125-126)
  24. Two Difficult (DiffLev 11-14) Discoverably Puzzles (numbers 127-128)
  25. Two Difficult (DiffLev 12-14) Exhaustingly Puzzles (numbers 129-130)
  26. Two Difficult (DiffLev 13) Farsightedly Puzzles (numbers 131-132)
  27. Two Difficult (DiffLev 10-11) Flourishment Puzzles (numbers 133-134)
  28. Two Difficult (DiffLev 13-14) Flowcharting Puzzles (numbers 135-136)
  29. Two Difficult (DiffLev 12-14) Goldsmithery Puzzles (numbers 137-138)
  30. Two Difficult (DiffLev 12) Headstrongly Puzzles (numbers 139-140)
  31. Two Difficult (DiffLev 11-13) Hyperstoical Puzzles (numbers 141-142)
  32. Two Difficult (DiffLev 10-11) Imponderably Puzzles (numbers 143-144)
  33. Two Difficult (DiffLev 12-14) Incomputable Puzzles (numbers 145-146)
  34. Two Difficult (DiffLev 10-14) Metalworking Puzzles (numbers 147-148)
  35. Two Difficult (DiffLev 10-14) Multipronged Puzzles (numbers 149-150)
  36. Two Difficult (DiffLev 10-14) Musicography Puzzles (numbers 151-152)
  37. Two Difficult (DiffLev 13-14) Outfieldsman Puzzles (numbers 153-154)
  38. Two Difficult (DiffLev 12-14) Outsparkling Puzzles (numbers 155-156)
  39. Two Difficult (DiffLev 14) Overmatching Puzzles (numbers 157-158)
  40. Two Difficult (DiffLev 11-12) Overstudying Puzzles (numbers 159-160)
  41. Two Difficult (DiffLev 10-12) Persuadingly Puzzles (numbers 161-162)
  42. Two Difficult (DiffLev 10-13) Productively Puzzles (numbers 163-164)
  43. Two Difficult (DiffLev 11-13) Projectingly Puzzles (numbers 165-166)
  44. Two Difficult (DiffLev 14) Recognizably Puzzles (numbers 167-168)
  45. Two Difficult (DiffLev 13-14) Stenographic Puzzles (numbers 169-170)
  46. Two Difficult (DiffLev 11-14) Stickhandler Puzzles (numbers 171-172)
  47. Two Difficult (DiffLev 12-14) Supernotably Puzzles (numbers 173-174)
  48. Two Difficult (DiffLev 9-10) Thunderclaps Puzzles (numbers 175-176)
  49. Two Difficult (DiffLev 10-13) Turbomachine Puzzles (numbers 177-178)
  50. Two Difficult (DiffLev 10-11) Unformalized Puzzles (numbers 179-180)
  51. Two Difficult (DiffLev 11-13) Unimprovable Puzzles (numbers 181-182)
  52. Two Difficult (DiffLev 9-14) Unmistakedly Puzzles (numbers 183-184)
  53. Two Difficult (DiffLev 10-14) Unperishably Puzzles (numbers 185-186)
  54. Two Difficult (DiffLev 12-14) Unpredicably Puzzles (numbers 187-188)
  55. Two Difficult (DiffLev 12-13) Voluntaryism Puzzles (numbers 189-190)