Needs a better end game
Both sides have one "max" piece, and one side has an extra, safe minor piece. Modulo dumb error, this can stay forever. Need an "offer draw" button. Many of my games become draws.
I like the creative idea; but games like chess take (hundreds of) years to get right.
Minor note: mousing over an opponent's piece should show his available moves.
Suggestions:
- a set of "checkmate in N moves" games would be good for training
- the tutorial show have an early slide show one piece pushing another