H. G. Muller wrote on Sun, Feb 16, 2020 05:23 AM UTC:
It could be that the new condition just makes hash cuts so rare that the damage they do is not apparent. And can you still solve Fine #70 with this new condition?
Some of these end-games are really difficult (like KBNK), but KRK is not amongst those. If the start position is not extremely unfavorable (like the shown mate-in-12 rather than the worst-case mate-in-16), a fresh search should show you a mate score after a few seconds. Once there is a mate score, it should just start playing from the mating line that is now in the TT. Just walking the winning King to the center should already be enough to get better than mate-in-12.
How long does it take ChessV to get a mate score from the given KRK position, and what depth does it reach? Not being able to act out an already found mate would point to entirely different problems than not finding the mate in the first place.
It could be that the new condition just makes hash cuts so rare that the damage they do is not apparent. And can you still solve Fine #70 with this new condition?
Some of these end-games are really difficult (like KBNK), but KRK is not amongst those. If the start position is not extremely unfavorable (like the shown mate-in-12 rather than the worst-case mate-in-16), a fresh search should show you a mate score after a few seconds. Once there is a mate score, it should just start playing from the mating line that is now in the TT. Just walking the winning King to the center should already be enough to get better than mate-in-12.
How long does it take ChessV to get a mate score from the given KRK position, and what depth does it reach? Not being able to act out an already found mate would point to entirely different problems than not finding the mate in the first place.