111 Nails & Glue Puzzles

Here are 111 puzzles sorted by difficulty (more or less). For each problem I report the size of the board and the fixed pieces contained. The symbol . means that the problem has only one target cell.
1. 33 .. (5 moves)
2. 44 . (5 moves)
3. 33 ... (6 moves)
4. 33 .. (6 moves)
5. 33 ... (6 moves)
6. 44 .. (6 moves)
7. 55 ... (6 moves)
8. 55 .... (6 moves)
9. 33 .. (7 moves)
10. 44 . (7 moves)
11. 44 .. (7 moves)
12. 44 .... (7 moves)
13. 44 .... (7 moves)
14. 55 .... (7 moves)
15. 55 .... (7 moves)
16. 44 .. (8 moves)
17. 44 . (8 moves)
18. 44 ..... (8 moves)
19. 44 .. (8 moves)
20. 44 .... (8 moves)
21. 55 .... (8 moves)
22. 55 ..... (8 moves)
23. 33 ... (9 moves)
24. 44 .... (9 moves)
25. 44 ..... (9 moves)
26. 44 . (9 moves)
27. 44 ..... (9 moves)
28. 44 .. (9 moves)
29. 44 .. (9 moves)
30. 55 .... (9 moves)
31. 33 ... (10 moves)
32. 44 .. (10 moves)
33. 44 .... (10 moves)
34. 44 ... (10 moves)
35. 44 ..... (10 moves)
36. 44 . (10 moves)
37. 55 .... (10 moves)
38. 55 ..... (10 moves)
39. 33 ... (11 moves)
40. 44 ..... (11 moves)
41. 44 .. (11 moves)
42. 44 .. (11 moves)
43. 44 . (11 moves)
44. 55 ... (11 moves)
45. 55 ..... (11 moves)
46. 55 ... (11 moves)
47. 44 .. (12 moves)
48. 44 .. (12 moves)
49. 44 ..... (12 moves)
50. 44 .... (12 moves)
51. 55 ..... (12 moves)
52. 55 ..... (12 moves)
53. 44 .. (13 moves)
54. 44 .. (13 moves)
55. 44 ..... (13 moves)
56. 55 ... (13 moves)
57. 44 .. (14 moves)
58. 44 ..... (14 moves)
59. 44 .. (14 moves)
60. 55 .... (14 moves)
61. 55 ..... (14 moves)
62. 55 ..... (14 moves)
63. 44 ..... (15 moves)
64. 44 .. (15 moves)
65. 44 .. (15 moves)
66. 44 .. (16 moves)
67. 44 .. (16 moves)
68. 44 ... (16 moves)
69. 44 ..... (16 moves)
70. 55 ..... (16 moves)
71. 55 ... (16 moves)
72. 44 .. (17 moves)
73. 44 .. (17 moves)
74. 44 ..... (17 moves)
75. 44 ..... (18 moves)
76. 44 .. (18 moves)
77. 55 .... (18 moves)
78. 44 ..... (19 moves)
79. 44 .. (19 moves)
80. 55 ..... (19 moves)
81. 55 .... (19 moves)
82. 44 ..... (20 moves)
83. 55 ... (20 moves)
84. 55 ... (20 moves)
85. 55 .... (20 moves)
86. 66 ....... (20 moves)
87. 44 ..... (21 moves)
88. 55 .... (21 moves)
89. 44 ..... (22 moves)
90. 55 ... (22 moves)
91. 66 ...... (22 moves)
92. 44 ..... (23 moves)
93. 55 .... (23 moves)
94. 44 ..... (24 moves)
95. 55 .... (24 moves)
96. 55 ... (24 moves)
97. 55 .... (24 moves)
98. 44 ..... (25 moves)
99. 55 ... (25 moves)
100. 44 ..... (26 moves)
101. 55 ... (26 moves)
102. 44 ..... (27 moves)
103. 55 ..... (27 moves)
104. 55 ... (27 moves)
105. 55 .... (27 moves)
106. 44 ..... (28 moves)
107. 66 ... (28 moves)
108. 55 ... (29 moves)
109. 55 .... (29 moves)
110. 55 ...... (29 moves)
111. 66 ....... (32 moves)