Previously I recorded a video where I managed to progress until I got stuck at 7-10. Recently a youtube user Dna423. gave solution of the said stage, so I finally can continue. After being stuck for almost two years, finally I could clear the rest of the puzzle, therefore completing the entire Puzzle Mode.
When seeing videos of the original SNES version of the game, it seems that there is a special stage with 10 more puzzles after beating the first 100 levels. However, I can't find the way to access this special stage on the PSX version, even by using cheats to unlock all levels. Let me know if you find a way to access the special stage, and I will probably continue the recording of those new levels.
0:00 Main Menu
0:08 Level 1
1:38 Level 2
2:54 Level 3
4:24 Level 4
5:57 Level 5
7:56 Level 6
10:17 Level 7
12:18 Level 8
14:15 Level 9
16:31 Level 10
18:43 Congratulations Screen
18:56 Credits