Puzzle 2439: 29-24 38-33 42x24 is winning.

Puzzle 1638: 29-33 19-23 is winning.

Puzzle 1466: 37-31 32x41 38x27 22-18 33-29 42-38 is winning.

Hi all, It's been a while and first of all, thank you all for sharing the mistakes here. The next puzzles will be disabled: International draughts: 487, 537, 590, 644, 753, 1886, 2097, 2180, …

Puzzle 590: there is another combination, 38-33 43-38 26-21

Chinese?

Puzzle 537: 33-28 43-38 42-38 36-31 39-33 is also possible and winning. https://lidraughts.org/training/537

Also 644: 35-30 34-29x30 33-28 27-21 and variation are winning. I recognize that the given solution for both this one and 590 are a bit better, but both alternate solutions are easily winning as well

590: 38-33 43-38 26-21 is winning as well

Not a mistake but in puzzle https://lidraughts.org/training/4299 I would like to see black react with 20. ... 19-23 instead of giving away a piece with 20-24. I understand 20-24 is the response from a…