- In level 21 (the hard 5x2 pit) adding the twofer block, weight 1. This
makes the level slightly easier and definitely more predictable for
solving by computer player.
- In level 23 (the hard 4x4 pit) reducing weight of all blocks from 2 to 1.
This makes the play a little bit more predicatble; the computer player
seems to pass the level on a more regular basis, even though it was very
rare that the computer player didn't pass this level.
- In level 24 (the hard 3x3 pit) excluding the unit cube from set of blocks.
This makes the level harder. Surprisingly the computer player seems to
have no problems passing even the harder version, now.
