ianfab
commented
6 years ago @Mstpcst I have done some testing on this position with the current version of the master branch, and the behavior seems to be fine to me:
- At short time controls (e.g., 1-10s for the rest of the game starting from this position), it is not able to checkmate the king in the "wrong" corner, so it drives the king to the other side of the board where it is able to deliver checkmate (within 20-40 moves depending on time control).
- At long time controls (e.g. 1 min for the rest of the game), it finds the mate in 15, keeps the king in the corner, and plays the shortest possible sequence until checkmate.
Trying to force it to always keep the king in the corner (as in #5) proved to be ineffective, because Stockfish then is not able to checkmate with KBQK at short time controls.
Since I do not really see an issue here, I am closing this, but feel free to reopen it if you encounter issues in this endgame again.
how to solve the problem KBQK from behind the same conner with Queen or (Med)
[Event "¡Å·Õè 70"] [Site ""] [Date ""] [Round ""] [White " 14 ·ÕË¹Õ 15 ·ÕäÅè"] [Black ""] [Result "1-0"] [Variant "makruk"] [CurrentMove "0"] [FEN "8/8/8/8/6M1/5S2/5K2/7k w 0 1"] [SetUp "1"]
{-------------- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M . . . . . . S . . . . . . . K . . . . . . . . . k white to play --------------}