Too difficult for computers

Here's a nice white to play and win study by Romanian Mihai Neghina that computers don't seem to understand:

I'll post a PGN of the solution tomorrow. In the meantime let me know if an engine sees the win here.

It's a great display of domination! I think you posted this one before. Or was it just similar?

Yes, I've posted it before, the strange thing is that I have an engine that sees the first few moves but doesn't demonstrate a winning score, it shows 0.00. I tried out the new one here named "Torch" and it does the same thing, it sees the first few moves but gives the same 0.00 score. They need to offer the Torch engine as a downloadable UCI engine that you can install in a GUI either free or as a paid product like Komodo Dragon.

Here is the solution to this study:

I must admit, that after letting Torch think about this one for a several hours it sees the win here with a correct continuation, but just about every other engine i've tried is clueless.

A fairly recent Stockfish from git (I used an I. Ivec compile) initially thinks that 1.Kf3 is slightly better that 1.Nd4, then after about one minute thinks that 1.Nd4 is the best, and around 50-ply does find the winning mechanism.

Thanks for the info. Here is the Torch eval I was talking about:

ja schade,das die kaputt ist aber das ist ja mit manchen passiert im vor computer zeitalter.

I've had some good and some bad experiences with the Torch version offered by chess.com. And indeed the engines I tried settle on 0.00 which is rational. If you can't let the queen out of the cage and it is easy to keep it in without making progress what else is there to do? Until you finally do make real progress of course!

Sting and huntsman (without nnue) solves this one almost instantly

Also, heres the puzzle created by me that none of the engines i tried seems to be able to solve. Black to play and draw. Huntsman is the only one that instantly

finds the first move but doesnt seem like it shows the correct continuation (at least not in first few minutes)...

It looks like the engine "Crystal 7" finds the draw instantly (less than 1 second):

If you would like to get this engine you can download it here for free.

What??????????

why do people cap their engine depth at 20 and say the puzzle is impossible for engines

Perhaps they don't understand how to change the depth or even what the depth means, another thing that people do is let the engine search 3 lines instead of one which also degrades the search.

Is this really the best move for black?

The commentary says blacks is "defending a pawn", but it looks to me like black is just giving up his queen for a rook.

Grandmasters play this very stuff all the time when there is a "no draw before move 30" rule in the tournament, and they don't want to waste much time to get their pre-arranged draw: they are copying the game Hamppe- Meitner which was played 154 years ago, but of course they don't brag that they have created something.

The best move that Black can make in this position is to resign. If we put the Black Queen back on g6 Stockfish says that White can force checkmate in 9 no matter what Black does.

If you think i was hiding it or wanted to take some kind of credit, then you completely wrong. By saying that it was created by me i meant that you cant really find it anywhere else on the internet if you look specifically for the puzzles engines have trouble with. And believe me or not if there was any further interest in the puzzle I would have shared original position myself.. But ok if its going to make you or anyone else feel better, then i admit that i copied position from someone elses game and modified it a bit so that the queen sacrifice would actually be the best move.

Solo para maestros