18.0
Add 143 puzzles. (Normal:93, Big:50)
There are categories in which the completion rate (%) is decreasing because of added puzzles.
17.1
Minor fixes.
17.0
Add 145 puzzles. (Normal:70, Big:75)
16.2
Updated internal library.
16.0
Add 144 puzzles. (Normal:144, Big:0)
15.0
Add 185 puzzles. (Normal:60, Big:125)
14.0
Add 193 puzzles. (Normal:143, Big:50)
13.0
Add 102 puzzles. (Normal:102, Big:0)
12.0
Add 100 puzzles.
11.0
Add 125 puzzles.
10.0
Add 158 puzzles.
9.1
Updated library.