Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Sunsetter missed m2 #2199

Closed
isaacl opened this issue Aug 21, 2016 · 0 comments
Closed

Sunsetter missed m2 #2199

isaacl opened this issue Aug 21, 2016 · 0 comments

Comments

@isaacl
Copy link
Member

isaacl commented Aug 21, 2016

For FEN

r4r1k/pp3ppp/8/5N2/4Bn2/2PP3n/P1Pn2PP/4r2K/QQRPPPPPbbb w - - 98 53

lichess reports -7.3. Sunsetter found m3 the previous move, but now can't find m2. Sunsetter output:

Found move: Q@f1 -723 fply: 3  searches: 39 quiesces: 59 

@niklasf

isaacl added a commit to isaacl/lila that referenced this issue Sep 3, 2016
Improve sunsetter output and behavior, especially in
positions close to mate.

- fix eval sign in "analyze" mode, which is
  used after sunsetter plays a forced move
- enter analyze mode if sunsetter quickly picks an obvious move
  without fully evaluating. For example, if alternatives allow
  mate in 1, sunsetter might move with only depth 1 evaluation,
  giving the best move but an incorrect eval score.
- approximate depth when sunsetter finds mate but doesn't give
  a depth.

Fixes lichess-org#2198 and lichess-org#2199.
isaacl added a commit to isaacl/lila that referenced this issue Sep 3, 2016
Improve sunsetter output and behavior, especially in
positions close to mate.

- fix eval sign in "analyze" mode, which is
  used after sunsetter plays a forced move
- enter analyze mode if sunsetter quickly picks an obvious move
  without fully evaluating. For example, if alternatives allow
  mate in 1, sunsetter might move with only depth 1 evaluation,
  giving the best move but an incorrect eval score.
- approximate depth when sunsetter finds mate but doesn't give
  a depth.

Fixes lichess-org#2198 and lichess-org#2199.
ornicar added a commit that referenced this issue Sep 20, 2016
* 'master' of github.com:ornicar/lila:
  Upgrade to Sunsetter8 (fixes #2199)
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

1 participant