I figured out Tower 23. The key is that when you transport and then drop, you can actually drop just enough to get the triangle in the square below, but technically still be in the square you teleported to. In the steps below, I will refer to that as a pseudo drop. Up Drop1 Left Drop1 Right. Back at start. Left Down Right Up. Back at start. Right Up Drop1 Down Drop1 Left.
I had a mistake in my previous comment. I fixed it below. It was for the 3rd one. You are supposed to drop a square and I left that out. That said, If anyone knows how to get past tower 23, please post that.
For Tower 20. Don't trigger the exclamation marks until all triangles are gone. The red exclamation should never get triggered: Get the top left triangle: starting at the shield. Up Left Left Up. Drop all the way down to the lower warp and go Right. For the lower triangle: From the shield, Right Down. Drop level with the triangle. Left Up. (Then Right Up Left to get back to the shield). Middle triangle From the shield: Left Down Drop1 Right Left Up. Then you will drop through the warp. Hope this helps.
For Tower 20. Don't trigger the exclamation marks until all triangles are gone. The red exclamation should never get triggered:
Get the top left triangle: starting at the shield. Up Left Left Up. Drop all the way down to the lower warp and go Right.
For the lower triangle: From the shield, Right Down. Drop level with the triangle. Left Up. (Then Right Up Left to get back to the shield).
Middle triangle From the shield: Left Down Right Left Up. Then you will drop through the warp.
Hope this helps.
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