Artifact ec3c221ee78d1487b8a31f3ce76520617cac9d43

D 2012-07-14T07:35:51
L Corner\sCases
U kinaba
W 147
flood2:
RRUDRRULURULLLDDLDW  ==> broken
RRUDRRULURULLLDDLDL  ==> safe escape

if air==0 && reach_open_lifting is the same timing, it is safe.

Z 275e9f2feaddca9b4b49cba14c4052d4