Stockfish with syzygys gives not mate in 1

[ernst]

It was addressed at stockfish, not at syzygy. No need to feel attacked.

[syzygy]

It was addressed at stockfish, not at syzygy. No need to feel attacked.

Stock Stockfish does not handle TBs...

I do not feel attacked at all, I'm just not going to explain everything once more. If you see H4 do impossible things, then that's good for you.

[petero2]

Yet somehow Houdini is able to circumvent syzygy's shortcomings.

Maybe it is doing something similar to what texel does: http://talkchess.com/forum/viewtopic.ph ... 91&t=52469

[ernst]

Yet somehow Houdini is able to circumvent syzygy's shortcomings.

Maybe it is doing something similar to what texel does: http://talkchess.com/forum/viewtopic.ph ... 91&t=52469

Could indeed be something like this, but perhaps I just see impossible things...

[syzygy]

Yet somehow Houdini is able to circumvent syzygy's shortcomings.

Maybe it is doing something similar to what texel does: http://talkchess.com/forum/viewtopic.ph ... 91&t=52469

I'm pretty sure it does not.

The reason H4 does not show the problem here is simply that it does not probe close to the leaves. So in the first plies it does not probe at all and therefore sorts the "best" move to the front.

[shrapnel]

Hmm... I'm no Programmer, but in my Online Engine-Engine matches, I have repeatedly observed that Houdini 4 utilizes the Syzygy EGTBs much, much better than Stockfish, especially in the End-Game !
Of course, many more Syzygy EGTB hits with Stockfish compared to H4 in the Middle-Game, but for some reason Houdini 4 APPEARS ( at least to me) to utilise the Syzgy EGTBs much more EFFECTIVELY in the End-Game, where of course it matters the most.
Maybe R Houdart has written better Code or something, but it DEFINITELY appears to me that Houdini 4 uses Syzygy EGTBs much better than Stockfish and indeed even Komodo 7 !
Just my 2 cents !

[shrapnel]

Yet somehow Houdini is able to circumvent syzygy's shortcomings.

Very true !
I agree, absolutely !