Queen and pawn endgame

[Maxwell86]

I downloaded FinalGen and set up the position, but after a while it said "The position is too complex. Set up a simpler position and try again."

Nevertheless, thanks a lot for the idea! FinalGen seems like a very useful tool.

[Nordlandia]

I downloaded FinalGen and set up the position, but after a while it said "The position is too complex. Set up a simpler position and try again."

Nevertheless, thanks a lot for the idea! FinalGen seems like a very useful tool.

FinalGen after 10 hours of generation time: Either win or draw.

I've given up on FinalGen myself.

[Rodolfo Leoni]

I downloaded FinalGen and set up the position, but after a while it said "The position is too complex. Set up a simpler position and try again."

Nevertheless, thanks a lot for the idea! FinalGen seems like a very useful tool.

FinalGen after 10 hours of generation time: Either win or draw.

I've given up on FinalGen myself.

As for me, I'd need to get rid of some files in the HD...

But I'm happy enough. Stockfish PA GTB already learned Qxf3 is a blunder, and without GM Gurevich help.... It plays until Qxb2 about instantly. I'll let it run tonight....

[Lyudmil Tsvetkov]

Qc5 and Qe3 lose too, and there are no other moves.

check better with your fish.

[d] 8/1p3Qpk/pq5p/4K2P/6P1/5P2/P1P5/8 b - - 12 48

Perhaps there was confusion. In the position above, which I think appeared in both games you posted, Black played Qb2+, which seems to lose (evaluation for White goes above +5).

What's wrong with Qb4, as suggested by asmFish? Or Qc5+ ? Qe3+ is certainly no good.

I don't know.

I am inputting those lines to SF and Komodo, especially Komodo seems to handle this better, and score only rises constantly after a while.

Komodo seems to like Qc5 less than Qb2, I have not checked Qb4.

really, I am very busy right now, have to finish one project of mine, when possible, will post some short input.

[zullil]

Qc5 and Qe3 lose too, and there are no other moves.

check better with your fish.

[d] 8/1p3Qpk/pq5p/4K2P/6P1/5P2/P1P5/8 b - - 12 48

Perhaps there was confusion. In the position above, which I think appeared in both games you posted, Black played Qb2+, which seems to lose (evaluation for White goes above +5).

What's wrong with Qb4, as suggested by asmFish? Or Qc5+ ? Qe3+ is certainly no good.

I don't know.

I am inputting those lines to SF and Komodo, especially Komodo seems to handle this better, and score only rises constantly after a while.

Komodo seems to like Qc5 less than Qb2, I have not checked Qb4.

really, I am very busy right now, have to finish one project of mine, when possible, will post some short input.

I don't know either. It is too easy to forget just how complex these positions are.

Even the high evaluation for White that I see after Qb2+ might just be an illusion. For example, in its line following Qb2+, asmFish has this position:
[d] 8/1K4pk/2P1q2p/8/1Q6/8/8/8 b - - 11 93
Searching this position to depth 93, asmFish shows 6.29 but no further progress. If this position is actually 0.00, then even Qb2+ might be OK to hold a draw for Black.

Maybe someone with access to 7-man tables can help here, at least with this one position!

[Rodolfo Leoni]

I don't know either. It is too easy to forget just how complex these positions are.

Even the high evaluation for White that I see after Qb2+ might just be an illusion. For example, in its line following Qb2+, asmFish has this position:
[d] 8/1K4pk/2P1q2p/8/1Q6/8/8/8 b - - 11 93
Searching this position to depth 93, asmFish shows 6.29 but no further progress. If this position is actually 0.00, then even Qb2+ might be OK to hold a draw for Black.

Maybe someone with access to 7-man tables can help here, at least with this one position!

Interesting! Another case of "persistent score" but with an open ending!
Thanks Louis.

[Ignacio]

Qc5 and Qe3 lose too, and there are no other moves.

check better with your fish.

[d] 8/1p3Qpk/pq5p/4K2P/6P1/5P2/P1P5/8 b - - 12 48

Perhaps there was confusion. In the position above, which I think appeared in both games you posted, Black played Qb2+, which seems to lose (evaluation for White goes above +5).

What's wrong with Qb4, as suggested by asmFish? Or Qc5+ ? Qe3+ is certainly no good.

I don't know.

I am inputting those lines to SF and Komodo, especially Komodo seems to handle this better, and score only rises constantly after a while.

Komodo seems to like Qc5 less than Qb2, I have not checked Qb4.

really, I am very busy right now, have to finish one project of mine, when possible, will post some short input.

I don't know either. It is too easy to forget just how complex these positions are.

Even the high evaluation for White that I see after Qb2+ might just be an illusion. For example, in its line following Qb2+, asmFish has this position:
[d] 8/1K4pk/2P1q2p/8/1Q6/8/8/8 b - - 11 93
Searching this position to depth 93, asmFish shows 6.29 but no further progress. If this position is actually 0.00, then even Qb2+ might be OK to hold a draw for Black.

Maybe someone with access to 7-man tables can help here, at least with this one position!

7-men says White mates in 49.

[Lyudmil Tsvetkov]

Qc5 and Qe3 lose too, and there are no other moves.

check better with your fish.

[d] 8/1p3Qpk/pq5p/4K2P/6P1/5P2/P1P5/8 b - - 12 48

Perhaps there was confusion. In the position above, which I think appeared in both games you posted, Black played Qb2+, which seems to lose (evaluation for White goes above +5).

What's wrong with Qb4, as suggested by asmFish? Or Qc5+ ? Qe3+ is certainly no good.

I don't know.

I am inputting those lines to SF and Komodo, especially Komodo seems to handle this better, and score only rises constantly after a while.

Komodo seems to like Qc5 less than Qb2, I have not checked Qb4.

really, I am very busy right now, have to finish one project of mine, when possible, will post some short input.

I don't know either. It is too easy to forget just how complex these positions are.

Even the high evaluation for White that I see after Qb2+ might just be an illusion. For example, in its line following Qb2+, asmFish has this position:
[d] 8/1K4pk/2P1q2p/8/1Q6/8/8/8 b - - 11 93
Searching this position to depth 93, asmFish shows 6.29 but no further progress. If this position is actually 0.00, then even Qb2+ might be OK to hold a draw for Black.

Maybe someone with access to 7-man tables can help here, at least with this one position!

this one is draw(supposedly, I don't have any tbs at all), but there are at least 1 000 001 ways to avoid that.

what I agree 100% with is that these positions, actually any position on the borderline between win and draw, draw and loss, are extremely complex, with sometimes only a perfect PV of 100+ plies able to give the final verdict.

and, as we know, we simply don't have perfect players right now, either humans or engines.

maybe in 50 years from now, but today not available.

[zullil]

Even the high evaluation for White that I see after Qb2+ might just be an illusion. For example, in its line following Qb2+, asmFish has this position:
[d] 8/1K4pk/2P1q2p/8/1Q6/8/8/8 b - - 11 93
Searching this position to depth 93, asmFish shows 6.29 but no further progress. If this position is actually 0.00, then even Qb2+ might be OK to hold a draw for Black.

Maybe someone with access to 7-man tables can help here, at least with this one position!

7-men says White mates in 49.

Interesting! Thanks.

[Lyudmil Tsvetkov]

Qc5 and Qe3 lose too, and there are no other moves.

check better with your fish.

[d] 8/1p3Qpk/pq5p/4K2P/6P1/5P2/P1P5/8 b - - 12 48

Perhaps there was confusion. In the position above, which I think appeared in both games you posted, Black played Qb2+, which seems to lose (evaluation for White goes above +5).

What's wrong with Qb4, as suggested by asmFish? Or Qc5+ ? Qe3+ is certainly no good.

I don't know.

I am inputting those lines to SF and Komodo, especially Komodo seems to handle this better, and score only rises constantly after a while.

Komodo seems to like Qc5 less than Qb2, I have not checked Qb4.

really, I am very busy right now, have to finish one project of mine, when possible, will post some short input.

I don't know either. It is too easy to forget just how complex these positions are.

Even the high evaluation for White that I see after Qb2+ might just be an illusion. For example, in its line following Qb2+, asmFish has this position:
[d] 8/1K4pk/2P1q2p/8/1Q6/8/8/8 b - - 11 93
Searching this position to depth 93, asmFish shows 6.29 but no further progress. If this position is actually 0.00, then even Qb2+ might be OK to hold a draw for Black.

Maybe someone with access to 7-man tables can help here, at least with this one position!

7-men says White mates in 49.

i.e., even with longer search, SF is not able to find the best moves again.