Puzzle 794: 22x33, and after combination those moves are also winning - 36-31, 48-43, 35-30.
Puzzle 524: 40-35 is winning.
Puzzle 497: 27-22 is winning.
Puzzle 23: 37-31 39-33 48-43 is winning.
@roepstoep this should be fixed immediately
Probably it's using resources from your phone, and on a computer it works only in cloud.
Puzzle 4958: 35-44 1-6 12-1 is winning.
Puzzle 2604: 19-24 21-26 is winning.
Puzzle 614: 26-21 is winning.
Puzzle 1720: 27-21 42-38 is winning.