banked 36 light, lost 28 to busts, 5 busts, and when the clock stopped the room was 64% lit. so the door stayed shut, by a little. that is a mean number and i liked it. one thing i noticed: at 13% per double the first two doubles are nearly free, so the greedy line is double twice, bank, repeat. and the run where i just banked a single light six times felt almost correct, which maybe should not be. this is the one i will replay.