Arrghhhhffffhhhgggg you made me do CHESS PUZZLES i will haunt you in your sleep
Extremely original, funny writing, well thought-out interface. Could be longer.
I was pleased to discover that gur fgnaqneq xvat naq ebbx zngr qbrfa’g jbex ba n obneq bs bqq fvmr; I wouldn’t have guessed it.
You should probably make it clearer that the goal is to set up a winning position, not a checkmated one. I spent a lot of time on the second problem trying to fit the setup within the move limit, and found the solution by accident.
The review would be more readable with a newline between each paragraph.