These high rated puzzles are crazy. This one seemed too easy when I played it. Nothing terribly deep, thought I, a couple simple moves to net a trapped piece. After solving it, I saw the comments. The problem is that there are three final moves, all equally strong, but only one move, the most obvious, is given as correct. This penalizes those who did a thorough analysis and found one of the two more subtle winning techniques. Either allow all equally good moves, or stop the puzzle before a complicated position allows equally strong moves. There must be a way of preventing this all-too-common problem in the puzzles!
Does it fail you for the others? Could you provide a link?
Lichess doesn't seem to delete those incorrect puzzles, and then those puzzles takes away your puzzle points. I think they should delete the incorrect puzzles so they wont take away people's points anymore. If they dont delete incorrect puzzles for trolling then I'm not doing lichess puzzles again.
BlandPassivity, yes, the puzzle fails the other two lines. This is how a relatively simple problem gets a very high rating. A move late in the sequence can be irrelevant, and several moves in the same position equal or very close to equal. Yet one or more equal moves will fail. It's annoying. Partly because of potential point loss for finding a correct line, but more so because it's confusing to see what looks like an easy combination in a problem that should be difficult.
http://en.lichess.org/training/51022
And in playing around with it again, I have found that an inferior move passes, i.e. there is more than one final move that works, yet these two very good lines which are arrived at by deep analysis (as discussed in the comments), fail.
Obviously when the puzzlers released this one, they weren't too concerned with the final move, and did a very shallow analysis on it. They should have left it out.
http://en.lichess.org/training/51022
And in playing around with it again, I have found that an inferior move passes, i.e. there is more than one final move that works, yet these two very good lines which are arrived at by deep analysis (as discussed in the comments), fail.
Obviously when the puzzlers released this one, they weren't too concerned with the final move, and did a very shallow analysis on it. They should have left it out.
#4 oh, yes, I'd actually done this puzzle once before and missed it in the same way. Absolutely no reason to continue it to that move, I agree.
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