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linrock / blitz-tactics

Fast-paced chess tactics trainer
https://blitztactics.com
GNU General Public License v3.0
160 stars 33 forks source link

Using outdated puzzles from lichess #40

Open Cannonbait opened 3 years ago

Cannonbait commented 3 years ago

Hi, lichess has two different sets of puzzles, where the older one is deprecated due to faulty generation. The exact ID can be found here

See this commit. I noticed that blitz-tactics uses these puzzles, which in turn breaks the "View Puzzle on Lichess" button served under, for example.

I don't know the exact details of why these puzzles are considered faulty

linrock commented 3 years ago

Thanks for reporting! I've removed usage of the older lichess puzzles from all game modes except Repetition so far. I'll close this issue once the Repetition levels are fixed.

I don't know the exact details of why these puzzles are considered faulty

i think a high number of the older puzzles had issues like counting good-but-not-best as incorrect and presenting a lot of positions where you could "retry" after playing a sub-optimal move. the newer puzzles are consistently more accurate as valid puzzles.