lidraughts.org

Mistakes in puzzles

#121

Russian puzzle 376 is unsolvable for me, with the "All at once" multi-capture enabled for analysis and puzzles. (possibly not really a mistake in the puzzle itself)

#124

I don't know if it is already detected, but there are interchangeable moves in Standard puzzle #499: 4. 42-37 and 5. 34-30 are interchangeable. I preferred 4. 42-37 and 5. 34-30, and my solution was confirmed, but some players may choose 4. 34-30 and 5. 42-37 , and get similar final idea. Just check this puzzle, please.

#125

Is there a search function for the forum? The search icon in the top right of the site seems to be able to find usernames only and the advanced search function finds games. A search function is way more practical than scrolling through old pages when you want to know whether a mistake in a particular puzzle is already reported or not.

Anyway, in standard puzzle 1608 the intended solution is obviously the best shot, a nice double shot. However I saw a diferent, simpler solution that also wins: 14-20 25x3 11-17 32x21 17x26 3x28 23x45, which wins a piece after 44-40 45x34. I judged this to be a winning position but I also asked Kingsrow for his opinion and after a while he wants to play 42-37 and gives the position a score of -2.32 (depth 32/25.3/45), a score which has been steadily growing as he calculates longer. This score is convincing enough to say black has a winning position I would say.

#126

@Finkeltje A quick respons to your first point, I will later respond to the actual reported mistake (i'm working atm):

If a mistake is found, we will disable the puzzle. So if you find a puzzle that is wrong, while you had to make the puzzle in the puzzle section, you can automatically assume it has not been reported yet. Otherwise, you wouldn't have been matched with the puzzle to solve.
But if you search for puzzles yourself by changing the URL number at the end, you can find also the puzzels that are disabled. You can see if a puzzle is disabled by checking wether or not you can give up- or downvotes (after solving it). If you can not give votes on the puzzle, the puzzle is yet disabled.

#127

About 1608: true, your solution is also clearly winning. The puzzle will be disabled.

#128

@kalnap
The moves of puzzle 499 are indeed interchangable and both are put in as good solution. If you try the puzzle again and choose the other line, it is also confirmed. I hope I don't miss something🙂

#129

puzzle 3865,

42-37 16-21 37x28 18-23 28x19 15-20 24x15 13x44 49x40 21-27 31x22 17x48 also wins.

puzzle 2776,

28-23 18x38 34-30 is also a winning solution but counted as a mistake even though 34-30 and then 28-23 isn't counted as a mistake

Reconnecting