Thanks for playing. I’m glad you liked it. I tried to be faithful to the original.
I agree that the game is really hard for beginners, but it actually gets too easy once you get really good at it, since I’m not increasing the difficulty over time. I think that a good balance for both beginners and advanced players would be the game starting at an even slower pace and increasing the speed up to something that’s much faster than the current one. The number of bombs also seems too high. This needs some fine tuning.
The way it is now, I can actually play indefinitely.
In addition to the @Vampirics 's hint, notice that if you are not carrying any piece, you can rearrange the last three pieces in a column. But doing so can be a bit expensive (in terms of time).