engine doesn't try at all

[danispringer]

Exact URL of where the bug happened

https://lichess.org/practice/intermediate-tactics/underpromotion/49fDW0wP/EDZxgoaP

Steps to reproduce the bug

instead of taking the knight, engine should try to play on at least a bit

What did you expect to happen?

instead of taking the knight, engine should try to play on at least a bit

What happened instead?

instead of taking the knight, engine should try to play on at least a bit

Operating system

macos

Browser and version (or alternate access method)

brave

Additional information

No response

[lucasart]

I think this is just the expected behaviour of Stockfish. Not a bug, and unrelated to lichess per se. "Fixing" this is not trivial, and unlikely to be validated by maintainers, as they optimise for elo, and code simplicity / maintainability.

But I hear you. From a human chess playing pov, this is disappointing. No impact against other engines that SF competes against (who play this TB-perfect). But for a human it's instructive to play on, against a resisting opponent, to understand the pitfalls of KRKN endgame. There are endless ways to blunder into a losing KRKN position...