Hey, the new ice underground and the new main block with detachable blocks sure add lots of more depth to the game. A few of the puzzles had me stumped for quite some time! Also, the level saving is a godsent now with more levels available.
I could image puzzles with 2 or more blocks that need to work together (becoming a blocker over ice or several vertical levels where one block becomes a 'bridge' for another to move over).
I think I found a bug in one of the later levels. I've appended the before (OK) and after (buggy) state as screenshots. I moved the blocks right.
Keep up the good work, I really like what you do!