Found from [link]

A New 100 Theme Challenge:
1. Introduction
2. Enigma (arvoitus)
3. Archaic (antiikkinen)
4. Disgruntled (närkästynyt, tyytymätön)
5. Comedic
6. Hostility
7. Melancholy
8. Elegant
9. Adrift (tuuliajolla)
10. Eccentric (omalaatuinen)
11. Frivolous (kevytmielinen, pinnallinen)
12. Harmonious
13. Irk (ärsyttää
14. Indifferent (välinpitämätön)
15. Ridiculous
16. Technological
17. Noble
18. Blank (blank pieces of paper are unacceptable)
19. Guilt
20. Amazement
21. Ruin
22. Joyous
23. Dejected
24. Creative
25. Vacant (vapaa, avoin, eleetön)
26. Surprise
27. Contentment (tyytyväisyys)
28. Clumsiness
29. Food
30. Unimpressed
31. Frustrated
32. Loneliness [link]
33. Western
34. Contrast
35. Books
36. Eerie (outo, aavemainen, pelottava)
37. Falling
38. Luxury
39. Travel
40. Numbers
41. Outside
42. Reflection
43. Frozen [link]
44. Payback [link]
45. Academic
46. Smirk
47. Hyper
48. Legendary
49. Desert
50. Golden
51. Scorn
52. Silver
53. Mist
54. Perplexed (hämmentynyt, ymmällään)
55. Glare
56. Stuck
57. Sarcastic
58. Boredom
59. Brooke
60. Luminous
61. Hullabaloo
62. Run
63. Vain
64. Muddy
65. Vicious
66. Gloomy
67. Rescue
68. Dusty
69. Absentminded
70. Caffeine
71. Drenched (läimärkä
72. Impish (ilkikurinen)
73. Archery
74. Pride
75. Stroll
76. Defender
77. Ablaze (innokas, liekeissä, tulessa)
78. Citadel (linnoitus, linnake)
79. Marshmallows
80. “What?”
81. Acrobatics
82. Listen
83. Assassin
84. Shock
85. Watchful
86. Laziness
87. Curiosity
88. Talkative
89. Deadly
90. Foundations
91. Report
92. Music
93. Hope
94. Splash
95. Fossilized
96. Rebuilt
97. Destruction
98. Loyalty [link]
99. Peace
100. Truth



The first one will have titles such as "100:##. Name Of The Piece". The latter will have titles such as "B100:##. Name Of The Piece".

Yeah, I'm doing it