4 ms·
One of lichess's criteria for a puzzle is that there must be only one winning move (with an exception for checkmates in 1). This makes it much easier to select
by gpm 5y ago
One of lichess's criteria for a puzzle is that there must be only one winning move (with an exception for checkmates in 1).
This makes it much easier to select for not terrible puzzles with an algorithm, and to have a good UI for puzzle solving, but it filters out many defensive puzzles both because it excludes positions where there are multiple defenses, and it excludes positions where you just manage to not lose without turning the position into a clearly winning one.
- Tenoke 5y agoI don't think that's quite true. I'm pretty sure I've had positions where I can deliver the final mate with multiple pieces and would accept either.
- gpm 5y agoYes, that's what I mean by an exception for checkmates in 1.
- pedrosorio 5y agoWouldn’t a puzzle with only one “non-losing” move be equally easy to find? (Assuming this is based on engine evaluation)
- lupire 5y agoThese are called "defense" puzzles and the big chess sites have a category for them.