No chance

[vincenegri]

I do not know why you raise the topic again.

[d]1r3rk1/5p2/1qb1pPp1/3pP1NB/p1pP4/PpP4R/1Pn4P/3RB2K b - - 0 2

There is no engine in the wordl that could hold this.

Actually, here white mates much quicker, and indeed SF would see a win after a couple of moves.

It's a very interesting position.

SF doesn't see a win yet after 25…Rb7, although it looks suicidal. The idea (presumably) being to allow the f8 rook to move. So many variations!

[Lyudmil Tsvetkov]

And to avoid you the effort to post analysis that is very far removed from the actual situation on the board, here the winning lines:

Bh5 Na3 Bd2 Nb5 Nf3 a3 Bh6

[d]1r3rk1/5p2/1qb1pPpB/1n1pP2B/2pP4/ppP2N1R/1P5P/3R3K b - - 0 5

or

Bh5 Nb4 Be2 Nd3 Bd3 cd3 Bd2

[d]1r3rk1/5p2/1qb1pPp1/3pP1N1/p2P4/PpPp3R/1P1B3P/3R3K b - - 0 5

followed by Rg1-g4-h4-h8 mate

Other black defences lose even quicker.

[Lyudmil Tsvetkov]

I do not know why you raise the topic again.

[d]1r3rk1/5p2/1qb1pPp1/3pP1NB/p1pP4/PpP4R/1Pn4P/3RB2K b - - 0 2

There is no engine in the wordl that could hold this.

Actually, here white mates much quicker, and indeed SF would see a win after a couple of moves.

It's a very interesting position.

SF doesn't see a win yet after 25…Rb7, although it looks suicidal. The idea (presumably) being to allow the f8 rook to move. So many variations!

It's very simple indeed, see my next post.

[vincenegri]

I do not know why you raise the topic again.

[d]1r3rk1/5p2/1qb1pPp1/3pP1NB/p1pP4/PpP4R/1Pn4P/3RB2K b - - 0 2

There is no engine in the wordl that could hold this.

Actually, here white mates much quicker, and indeed SF would see a win after a couple of moves.

It's a very interesting position.

SF doesn't see a win yet after 25…Rb7, although it looks suicidal. The idea (presumably) being to allow the f8 rook to move. So many variations!

It's very simple indeed, see my next post.

Thanks, but your next post doesn't give the response to .. Rb7. It just says this "loses quicker", I'm trying to find out how. One would expect that SF would spot the win after such a move.

[Lyudmil Tsvetkov]

I do not know why you raise the topic again.

[d]1r3rk1/5p2/1qb1pPp1/3pP1NB/p1pP4/PpP4R/1Pn4P/3RB2K b - - 0 2

There is no engine in the wordl that could hold this.

Actually, here white mates much quicker, and indeed SF would see a win after a couple of moves.

It's a very interesting position.

SF doesn't see a win yet after 25…Rb7, although it looks suicidal. The idea (presumably) being to allow the f8 rook to move. So many variations!

It's very simple indeed, see my next post.

Thanks, but your next post doesn't give the response to .. Rb7. It just says this "loses quicker", I'm trying to find out how. One would expect that SF would spot the win after such a move.

Same, Bf2

[d]5rk1/1r3p2/1qb1pPp1/3pP1NB/p1pP4/PpP4R/1Pn2B1P/3R3K b - - 0 3

followed by Rg1-g4-h4.

White has too many threats, and black has nothing to counter that.

[vincenegri]

I do not know why you raise the topic again.

[d]1r3rk1/5p2/1qb1pPp1/3pP1NB/p1pP4/PpP4R/1Pn4P/3RB2K b - - 0 2

There is no engine in the wordl that could hold this.

Actually, here white mates much quicker, and indeed SF would see a win after a couple of moves.

It's a very interesting position.

SF doesn't see a win yet after 25…Rb7, although it looks suicidal. The idea (presumably) being to allow the f8 rook to move. So many variations!

It's very simple indeed, see my next post.

Thanks, but your next post doesn't give the response to .. Rb7. It just says this "loses quicker", I'm trying to find out how. One would expect that SF would spot the win after such a move.

Same, Bf2

[d]5rk1/1r3p2/1qb1pPp1/3pP1NB/p1pP4/PpP4R/1Pn2B1P/3R3K b - - 0 3

followed by Rg1-g4-h4.

White has too many threats, and black has nothing to counter that.

Indulge me, I'm just a noob. After Bf2, Nb4.


Point being that the immediate Rg1 is met by Nd3.

[Lyudmil Tsvetkov]

Just to avoid people following all the way what engines suggest, on Nb4, white does not capture on b4, as SF would very much like, but simply continues with Be2

[d]5rk1/1r3p2/1qb1pPp1/3pP1N1/pnpP4/PpP4R/1P2BB1P/3R3K b - - 0 4
and the abovementioned plan.

[vincenegri]

And after Be2 Ra7 Rg1 (presumably?) Nd3 Bxd3 cxd3?

[Lyudmil Tsvetkov]

As Vince is a very main SF developer, just to suggest that SF has some very wrong search code, telling the engine that in a position where one side leads by a large margin in score, the other side, if there is a drawing opportunity, for example perpetual check, should quickly go for the draw.

Here this obviously fails, and that is why all SF sees initially is a draw by a perpetual check.

There is not a chess rule, that if one side leads by a very large margin in score, the other side should quickly grab the draw, if available, maybe look a bit further if there is not also a win.
If you are able to draw when in big disadvantage, chances are you might also have a win.

Nevermind.

[vincenegri]

And after Be2 Ra7 Rg1 (presumably?) Nd3 Bxd3 cxd3?

Aha, you *don't* play Rg1 there, but Rh7. Thanks!