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.

Puzzle 804: 11-16 26-31 27-31 is winning.

Puzzle 6570: 38x9 is winning.

Puzzle 3626: 26-21 is winning.