lidraughts.org/training/2504 12-17 on move 3 is also winning

lidraughts.org/training/standard/3701
37-31 on move 1 is also winning

Hi, today was doing some puzzles and accidentally found alternative solution after which the engine shows even higher evaluation than after the correct solution. The mistake is probably caused by scan because it doesn't see the alternative solution even after first piece is given. The number of the puzzle is 1798, there's a link: lidraughts.org/training/1798

Alternative solution: 2.27-22 18x27 3.33-29 24x22 4.34-30 35x24 5.37-31 26x28 6.38-32 27x47 7.16x29 24x33 8.48-42 47x38

btw. I lost 30 rating points on this one, i don't care that much about puzzles rating so i don't expect any refund but if there is some painless, easy and quick way to give it back to me then i will appreciate.

2

In puzzle lidraughts.org/training/5656 white has three choices for capture at move 9 of the puzzle. I chose 3x2, which this site says is incorrect. All three possible captures are easily winning however.

1

Hi all,

First of all, again thank you very much for sharing the mistakes. The puzzles below (not all of them, see commentary) will be disabled in a few days!

10x10 draughts:
89 - Incredible that this one has been found so late
908
1686
1798 - Actually a beautiful alternative solution!!
2504
3701
5656

Frisian draughts:
257
268

Russian draughts:
150
358 - No - The suggested 3. e3-d4 isn't winning because of g5:a3, so puzzle is correct
399 - No - You already found this was false alarm :)

Regards

311

lidraughts.org/training/5794
Why not to play immediately 22-27, what 24-30 move is for? 24-30 looks for me like giving a piece for free with no benefit. Thanks

@apieti this is "give 3, take 3" shot which results in getting a king, but if you avoid sacrifice 24-30, your king is going to be trapped immediately by 40-34, and you get no advantage

1