lichess.org
Donate

Bad puzzle

Not sure where to address this feedback...

lichess.org/training/119315 is incorrect. The first move is fine (Nxd4), but the 2nd move I played (Rd1) was considered wrong, even though it is definitely not worse than the computer move (axb4). First time I've ever seen the LiChess puzzle algorithm break.
I turned on Stockfish to see the best move, both of the moves Rd1 and axb4 are considered the best move because it shows +3.6 on both moves, maybe that what caused the problem, the puzzle is prepared only for one sequence of moves. I think puzzles with more than one best move should be avoided by Lichess.
These are games that acutally played which they do not edit which why it might be wrong.
@sparky3012 When black played 2. .. Re8 this will allow him to threaten a queen pin by playing 3. .. Bd7, the best move to defend against this pin is playing 3. Ra3 and then play Re3 if black decided to play Bd7

This topic has been archived and can no longer be replied to.