Il 14 giugno 2026 alle 13:15 Dirk Schiemann ha scritto: > additional information regarding the bug: > the sequence: set gnubgid > XGID=---BBBB---A-AA---b--Dbcce-:1:1:1:42:1:1:0:5:10 > hint > leads to the absurd evaluation for 13/7
I can reproduce this, both CLI and GUI GNU Backgammon 1.08.003 20251217 The problem lies in the filtering. The manual is more thorough, but tl;dr: GNUbg will analyse every move at 0-ply, and then some moves are shipped to a higher level of analysis. Which moves warrant a higher level of analysis? GNUbg says: - always accept `x` moves - and then add `y` more, within error of `k`. The default values are x=0, y=8, k=0.140 Sadly in your example 13/7 was the twelfth move, so it did not get promoted to a higher level of analysis. So the engine is fine, but the default filtering settings are way too conservative for today’s hardware. Do you feel brave enough to file a bug report? https://savannah.gnu.org/bugs/?group=gnubg&func=additem If not, I will do it myself, it seems something which is easy to implement and will benefit all users, especially newcomers —F
