No chance

[Lyudmil Tsvetkov]

Louis, let's finish this.

White threatens Rg1-g3-h3 with mate.

On Na3, Rg1-g3-h3 wins, while on Nb4, Bg1, followed by Rf1-f3-h3

Still not seeing it?

[Lyudmil Tsvetkov]

i believe you've overlooked stockfishes next move.

To resign?

[zullil]

Louis, let's finish this.

White threatens Rg1-g3-h3 with mate.

On Na3, Rg1-g3-h3 wins, while on Nb4, Bg1, followed by Rf1-f3-h3

Still not seeing it?

Was waiting to see when SF saw mate. But let's say SF resigns. Nicely played. You have demonstrated a true blind spot here:

Code: Select all

info depth 47 seldepth 83 multipv 1 score cp -1547 nodes 30632243032 nps 22518873 time 1360292 pv b6a5 d1g1 c2e3 f2e3 a5c3 b2c3 b3b2 g1b1 f8b8 h6h7 c6e8 h7g7 g8h8 e2d1 b8c8 g5e6 e8c6 e6c5 b7b5 g7f7 b5c5 d4c5 d5d4 h1g1 d4e3 b1b2 c6d5 f7g7 c8a8 g1f1 e3e2 f1e2 d5c6 g7g6 a8c8 e2e3 c6d5 g6g7 c8d8 g7g5 h8h7 b2d2 h7h6 g5g7 d8e8 d2d4 e8e5 e3d2 d5e4 c5c6 e5f5 c6c7 f5c5 d4e4

[yanquis1972]

i believe you've overlooked stockfishes next move.

seems im mistaken! well played lyudmil!

i tried komodo, SF, & H4 on the position a couple moves back; none saw mate.

SF was actually threatening Nb4-d3-f2 with check

[Lyudmil Tsvetkov]

i believe you've overlooked stockfishes next move.

seems im mistaken! well played lyudmil!

i tried komodo, SF, & H4 on the position a couple moves back; none saw mate.

SF was actually threatening Nb4-d3-f2 with check

I told you, those engines simply can't play chess...

[Terry McCracken]

i believe you've overlooked stockfishes next move.

seems im mistaken! well played lyudmil!

i tried komodo, SF, & H4 on the position a couple moves back; none saw mate.

SF was actually threatening Nb4-d3-f2 with check

I told you, those engines simply can't play chess...

In some positions all engines are hopeless. They can't think or have intuition.

[Graham Banks]

i believe you've overlooked stockfishes next move.

seems im mistaken! well played lyudmil!

i tried komodo, SF, & H4 on the position a couple moves back; none saw mate.

SF was actually threatening Nb4-d3-f2 with check

I told you, those engines simply can't play chess...

In some positions all engines are hopeless. They can't think or have intuition.

I guess the key question would be as to how often they put themselves into such positions.

[peter]

[[d]1r3rk1/5p1p/1qb1pPp1/3pP3/p1pP4/PpP2N1R/1Pn1B2P/3RB2K w - - 0 8
I am very much afraid this is mate in 8.

Congrats, Lyudmil!

Didn't watch the thread till now, but even if you were a little bit too optimistic with the #8-announcement at this point, you indeed showed once again, that engines are blind at certain spots, especially if it comes to Zugzwang

[Lyudmil Tsvetkov]

The whole game as pgn, not that bad after all.

[pgn][MLNrOfMoves "9"]
[MLFlags "000000"]
[Event "L Tsvetkov-Stockfish Nov 2014"]
[Result "*"]
[SetUp "1"]
[FEN "r4rk1/1b2bp1p/1q2p1p1/3pPnP1/p1pP2Q1/PpP1PN1R/1P5P/R1BB3K w - - 0 1"]

1. Bd2 Rab8 2. Be2 Bc6 3. Be1 Nxe3 4. Qf4 Nc2 5. Rd1 Kg7 6. Qf6+ Bxf6 7. gxf6+
Kg8 8. Ng5 h6 9. Rxh6 Rb7 10. Bf2 *
[/pgn]

Lasted just 10 moves, but SF beat me in the same manner before that.

To tell you the truth, the win was easy, as the white position is simply gorgeous. The full 2 pawns white edge are really there, but why engines do not see it? SF's e3 capture might not have been optimal, but Nc2 instead of Nf5 was really the bigger mistake. You need that knight close to the king to protect it, as it is its only defender.

However, after Ne3 everything seems to lose, and even after Bc6, quicker or slower. The white setup is simply too strong. There is a single drawing line for black, starting with the first move, but I will not tell you which. For some reasons SF does not want to play it. (as usual, in the hurry, I bungled things up; I thought white was winning eveywhere from the first move, but I posted the wrong position, after the second black move, though, the win is there. If SF plays the way it does, by just shuffling along, every move wins)

Considering mate after black Kg7, I would say the mate is there in all the lines. I cheked some 20-30 variations, and get to mate in 95% of them. In one or 2 lines I did not find the mate, but am certain it is there. Btw., SF chose the least spectacular line, I am not sure if the least resisting. After Ng5, also h5 and Na3 (probably best defence) is possible. The length of mate in varies from 10 to some 25 moves, so not the shortest of forced wins, but still...

[d]1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - 0 6

Btw., how many engines do not recognize a forced mate above after Qf6? Any engine not seeing Qf6?

[Lyudmil Tsvetkov]

i believe you've overlooked stockfishes next move.

seems im mistaken! well played lyudmil!

i tried komodo, SF, & H4 on the position a couple moves back; none saw mate.

SF was actually threatening Nb4-d3-f2 with check

I told you, those engines simply can't play chess...

In some positions all engines are hopeless. They can't think or have intuition.

I guess the key question would be as to how often they put themselves into such positions.

Every single game, Graham, at least when I play top engines on my computer.
It is simply very difficult to avoid closing the game, if one of the players wants to close it, without compromising too much on quality.

Btw., some people would call me a cheater. How did I cheat in that game, when neither SF, nor Houdini or Komodo see mate? What other stronger engine did I use, and on what fabulous hardware?

The truth is simple: there are positions that engines do not understand and play badly, like this one.