The Doomsday of Stockfish DD

[Dr.Wael Deeb]

Nice anti-computer strategy gameplay

I prefer to beat them using my well stumbled opening lines regards,
Dr.D

It is important to beat them, to show that humans are not inferior.

I appreciate anyone who plays the computer chess engines and shows some guts

Since the year 2002 I've played 1011 games at long time controls which were 20 minutes + 20 seconds increment then I incresed the time controls to 40 minutes + 20 seconds increment....

I switch off the chess engine thinking lines,no takebacks and the only advantage that I apply for myself is giving myself infinite time control....

I have an elite database with my best games annotated by the top chess engines and commented by myself....

I play the following opening systems mainly:
_With White I play the Larsen-Nimzovitch attack,a marvellous opening system with a lot of potential....

Against the Sicilian I play the Grandprix Attack with a lot of attacking schemes resulting in a beautiful fireworks over the chess borad....

_With Black I play the Pirc Defence against 1. e4 along with the Berlin defence against the Ruy Lopez and the Scandinavian Defence from time to time....

Against 1.d4 I play mainly the KID and the Old Indian Defence which I admire for it's remarkable formations and the Chigorin defence though rarely....

Oh,I play on an official FIDE chessborad as if there is a human in front of me regards,
Dr.D

P.S.Lately,I set up a chess game against some of the oldies but goodies like this one here played recently

[pgn][Event "____12G Match 02"]
[Site "?"]
[Date "2013.11.28"]
[Round "?"]
[White "Dr.Deeb"]
[Black "ChessGenius v1.003"]
[Result "1-0"]
[ECO "A01"]
[Annotator "Deep Rybka 4.1 x64 (20m)"]
[PlyCount "104"]
[Source "Chess Informant"]

{A01: Nimzowitsch-Larsen Opening} 1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 d6 5.
Ne2 Bd7 6. O-O a6 7. Bxc6 Bxc6 8. d4 e4 (8... Qe7 9. Nd2 O-O-O 10. a4 Qe6 11.
c4 Qg4 12. e4 h5 13. d5 Bd7 14. c5 h4 15. f3 Qg5 16. Nc4 Kb8 17. Qd3 h3 18. g3
dxc5 19. Nxe5 Be8 20. Nc4 Bd7 21. e5 Ne8 22. Qc3 f6 23. e6 {
Revelator (2504)-Simplicissimus (2477) playchess.com INT 2007 1-0 (60)}) 9. c4
d5 10. Ba3 $146 (10. Nbc3 Bd6 11. Ng3 h5 12. cxd5 Bb5 13. Nxb5 axb5 14. Qe2 Qd7
15. f3 Bxg3 16. hxg3 Qxd5 17. Rfc1 c6 18. Rc5 Qd6 19. Re5+ Kf8 20. a4 b4 21.
Rf1 Rh6 22. Qc4 Kg8 23. fxe4 Rg6 24. Rf4 Rxg3 {
Wolf,R-Haist,W (2225) Bad Urach 1986 1/2-1/2 (42)}) 10... Bxa3 11. Nxa3 O-O 12.
Nb1 Qe7 13. Ng3 Bd7 14. Nc3 c6 {Secures b5} 15. c5 {This push gains space} Bg4
{Black threatens to win material: Bg4xd1} 16. Qe1 Nh5 17. h3 Nxg3 18. fxg3 {
White has new doubled pawns: g2+g3} Be6 19. Ne2 Qg5 {
Black threatens to win material: Qg5xe3} 20. Nf4 Bc8 21. b4 h6 22. Kh2 Bd7 23.
Qe2 a5 24. a3 Rfe8 25. Ra2 Bc8 (25... Reb8 26. b5 $11) 26. Rfa1 (26. b5 a4 $14)
26... Qe7 (26... Bd7 27. g4 $11) 27. Qh5 (27. b5 Qd7 $14) 27... Rf8 28. Qd1 (
28. b5 Bd7 $14) 28... Be6 29. Qd2 (29. b5 cxb5 30. Rb1 b4 $14) 29... Ra7 (29...
g5 30. Ne2 $11) 30. Qb2 (30. b5 Raa8 $14) 30... Rfa8 (30... g5 31. Ne2 $14) 31.
Qd2 (31. b5 Re8 $14) 31... Bd7 (31... g5 32. Nxe6 Qxe6 33. a4 $11) 32. Qb2 (32.
b5 f6 $14 (32... cxb5 $143 33. Nxd5 Qg5 34. Nb6 $18)) 32... Qg5 33. Qd2 Qd8 (
33... Ra6 34. a4 $11) 34. b5 $14 {Playing against the pawn chain} Qg5 35. b6
Ra6 36. a4 (36. g4 Kh8 $14) 36... Be6 (36... h5 37. Rf1 $11) 37. Qe1 Bd7 38.
Qf2 Rf8 39. g4 f5 40. gxf5 Rxf5 41. g4 {White threatens to win material: g4xf5.
} Rf7 42. Qg3 Ra8 43. Rg1 Raf8 44. Rf2 Kh7 $2 (44... Qe7 $142 $5 {
would keep Black alive} 45. Rfg2 Qg5 $14) 45. h4 $16 Qe7 $2 (45... Qd8 $142 46.
g5 hxg5 47. hxg5 Rh8 $16) 46. g5 $18 hxg5 47. hxg5 (47. Qxg5 $6 Qxg5 48. Rxg5
Rf5 $14) 47... Rh8 48. Kg2 Kg8 49. Ng6 Rxf2+ 50. Qxf2 Qxg5+ 51. Kf1 Qd8 52.
Nxh8 Kxh8 (52... Kxh8 53. Qf7 Bh3+ 54. Ke1 Qd7 55. Rxg7 Qxf7 56. Rxf7 Bc8 57.
Rf8+ Kh7 58. Rxc8 Kg6 59. Rc7 Kh5 60. Rxb7 Kg5 61. Rc7 Kf5 62. b7 Kg4 63. Rf7
Kh5 64. b8=Q Kh4 65. Qg8 Kh5 66. Rh7#) 1-0[/pgn]

Nice game, Wael.

It is time to take up on Stockfish DD.

Thanks

BTW,the chess engine in question is ChessGenius 3 v1.003 which is not so easy to beat....

Actually,I feel that I am playing a human IM and not just a pure computer chess entity....

Now for Stockfish,I am not there yet....

Could anyone tell me where can I download ChessGenius 4 please
Cheers,
Dr.D

[Dr.Wael Deeb]

These games were played as part of a mini-testmatch, using a special test suite of mine. The position used here is one of my favorites, since it works well to highlight engine strengths and weaknesses. It is a subvariation of the B32 Neo-Sveshnikov Sicilian.

Stockfish (one of the recent versions with Syzygy TB support was tested here) has greatly impressed me. SF4 used to play weakly in this test opening; with White it tended to choose 10. Qd1-h5 followed by Qh5-d1 on the next move, which was really dubious, but now opts for the calm and solid 10. 0-0.

However, that is not even the main story. It is SF's strong and brilliant attacking play with Black in a semi-closed position that leaves a lasting impression. At the same time, on the flipside, SF's opponent, Komodo6 is completely crushed in both games with White -- more badly than I have ever seen Komodo lose, with one loss in 27 moves at a time control of 25m+5s! These 2 games were just as revealing about Komodo's play in this type of position involving Kingside attacks. I hope to eventually test the new Komodo with the same openings.



Here we go:

[pgn]

[Event "15m3s-SFsbK6 test"]
[Site "?"]
[Date "2013.11.29"]
[Round "1.1"]
[White "Komodo 6 64-bit"]
[Black "Stockfish 241113 64 SSE4.2sb"]
[Result "0-1"]
[ECO "B32"]
[Annotator "0.06;0.16"]
[PlyCount "76"]
[EventDate "2013.11.29"]

{Intel(R) Core(TM) i3-2120 CPU @ 3.30GHz 3292 MHz W=19.6 plies; 1,143kN/s B=24.
8 plies; 1,580kN/s 1 core, 512 MB hash each, ponder off} 1. e4 c5 2. Nf3 Nc6 3.
d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. N1c3 a6 8. Na3 f5 9. Bd3 f4 10. Nd5 {
[%eval 6,21] [%emt 0:00:25] first move out of book is somewhat overambitious,
and probably not White's best; recent versions of SF play the sensible 10.0-0
here, whereas SF4 used to play the awful 10.Qh5} Nf6 {[%eval 16,23] [%emt 0:00:
27]} 11. O-O {[%eval 9,22] [%emt 0:00:53] (Bd2)} O-O {[%eval 0,24] [%emt 0:00:
15]} 12. Bd2 {[%eval 1,20] [%emt 0:00:57]} Be6 {[%eval 8,23] [%emt 0:00:21]
(Qe8)} ({I've even seen} 12... Qe8 {!!?} 13. Nc7 Qg6 $40 {with dangerous
attacking prospects for Black; ironically, Komodo considered this in its PV,
yet look how the game turned out}) 13. Bc3 $6 {[%eval 4,21] [%emt 0:01:27]
seems positionally slow and tactically inaccurate} (13. Nc2 $5 {the Knight
needs to be better centralized anyway} Rc8 14. Rc1 f3 $2 15. Nxe7+ $1 $16 Nxe7
16. Qxf3 $16 Nfd5 17. Qg3 {Black would have no compensation for the pawn here})
13... Rc8 {[%eval 10,23] [%emt 0:00:21]} ({Black could already try} 13... f3 $5
14. g3 Qe8 $1 $40 15. Nc7 $4 Qh5 $19) 14. b3 {[%eval 11,21] [%emt 0:01:26]
(Nc2)} f3 $1 {[%eval -34,21] [%emt 0:00:24] (Qe8) the pawn can't be taken} 15.
g3 {[%eval 10,20] [%emt 0:00:19] (Nc2)} (15. Nxe7+ $6 Nxe7 16. Qxf3 Nfd5 $17 {
this now hits both the Queen and misplaced Bishop on c3}) 15... Qe8 {[%eval
-22,23] [%emt 0:00:25]} 16. Nc2 {[%eval 0,20] [%emt 0:00:23]} Ng4 {[%eval -48,
25] [%emt 0:00:50] (Bd8)} 17. h3 {[%eval 2,19] [%emt 0:00:40]} Nf6 $5 {[%eval
-78,25] [%emt 0:01:16] I'd expected Ng4-h6, but the Knight has already
provoked a further weakness} (17... Nh6 $17) 18. h4 {[%eval 0,20] [%emt 0:00:
21]} Nh5 $1 $17 {[%eval -86,24] [%emt 0:00:19] (Bd8)} 19. Nxe7+ {[%eval -3,18]
[%emt 0:00:46]} Nxe7 $1 {[%eval -82,23] [%emt 0:00:20]} 20. Kh2 {[%eval -16,19]
[%emt 0:00:29] (Ne3)} Nf4 $3 {[%eval -78,22] [%emt 0:00:21] (Qg6) White's
position is totally compromised, but Komodo has no awareness of the deeper
dangers} 21. Re1 {[%eval 0,19] [%emt 0:00:37] (Rh1)} (21. gxf4 Rxf4 $19) 21...
Qh5 $19 {[%eval -397,22] [%emt 0:00:19] (Ng2) and now SF sees itself as
clearly winning} 22. Bf1 {[%eval 0,19] [%emt 0:00:12] (Qd2)} Neg6 {[%eval -522,
23] [%emt 0:00:14] (Nc6)} 23. Kg1 {[%eval -230,17] [%emt 0:00:21] Komodo
finally sees it's busted} Nxh4 $1 {[%eval -545,24] [%emt 0:00:13] Diagram [#]
nice} 24. Qxd6 {[%eval -229,20] [%emt 0:00:21]} Nhg2 {[%eval -587,26] [%emt 0:
00:28]} 25. Qxe5 {[%eval -298,21] [%emt 0:00:20]} Nh3+ {[%eval -604,26] [%emt
0:00:13]} 26. Kh2 {[%eval -304,19] [%emt 0:00:03]} Ng5+ {[%eval -622,26] [%emt
0:00:15] (Qxe5)} 27. Kg1 {[%eval -187,17] [%emt 0:00:03]} Rf6 {[%eval -632,28]
[%emt 0:00:18] hehe } 28. Ne3 {[%eval -297,20] [%emt 0:00:21]} Nh3+ {[%eval
-664,26] [%emt 0:00:13]} 29. Kh2 {[%eval -354,20] [%emt 0:00:05]} Qh6 {[%eval
-731,27] [%emt 0:00:17]} 30. Qxf6 {[%eval -385,21] [%emt 0:00:18] position was
hopeless for White} gxf6 {[%eval -759,26] [%emt 0:00:18]} 31. Nxg2 {[%eval
-397,22] [%emt 0:00:09]} fxg2 {[%eval -791,25] [%emt 0:00:17]} 32. Kxg2 {
[%eval -291,18] [%emt 0:00:03]} f5 {[%eval -800,26] [%emt 0:00:21] (Ng5)} 33.
f4 {[%eval -345,18] [%emt 0:00:16] (exf5)} Kf7 {[%eval -953,23] [%emt 0:00:17]
(Nxf4+)} 34. Kf3 {[%eval -454,18] [%emt 0:00:43]} Rd8 {[%eval -1046,25] [%emt
0:00:23]} 35. Bxh3 {[%eval -613,18] [%emt 0:00:19]} fxe4+ {[%eval -1634,25]
[%emt 0:00:16] (Qxh3)} 36. Rxe4 {[%eval -842,19] [%emt 0:00:10]} Qxh3 {[%eval
-2038,26] [%emt 0:00:17]} 37. Rg1 {[%eval -963,21] [%emt 0:00:21]} Qh5+ {
[%eval -9185,29] [%emt 0:00:11] (Rd3+)} 38. Kf2 {[%eval -1077,21] [%emt 0:00:
13]} Rd3 {[%eval -9305,31] [%emt 0:00:16] adj} 0-1

[Event "25m5s-SFsbK6 test"]
[Site "?"]
[Date "2013.11.29"]
[Round "1.1"]
[White "Komodo 6 64-bit MP"]
[Black "Stockfish 241113 64 SSE4.2sb"]
[Result "0-1"]
[ECO "B32"]
[Annotator "0.15;0.00"]
[PlyCount "54"]
[EventDate "2013.11.29"]
[EventType "tourn"]

{Intel(R) Core(TM) i3-2120 CPU @ 3.30GHz 3292 MHz W=20.8 plies; 2,071kN/s
B=27.8 plies; 2,815kN/s; 100 TBAs} {2 cores, 1 GB hash each, ponder off} 1. e4
c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. N1c3 a6 8. Na3 f5 9.
Bd3 f4 10. Nd5 {[%eval 15,23] [%emt 0:01:08]} Bg5 $5 {[%eval 0,26] [%emt 0:00:
30] (Nf6)} 11. Bd2 {[%eval 19,21] [%emt 0:01:03] (Nc2)} Nf6 {[%eval 0,26]
[%emt 0:00:33]} 12. O-O {[%eval 11,22] [%emt 0:01:11]} O-O {[%eval 0,27] [%emt
0:00:41]} 13. Bc3 $2 {[%eval 17,22] [%emt 0:00:57] (Nc2)} ({better is} 13. Nc2
$142 {so that f4-f3 is prevented by Bxg5}) 13... f3 $1 $17 {[%eval -131,25]
[%emt 0:00:26] (Ne7) now White's position is compromised, and Black gets a
crushing attack against the porous Kingside} 14. g3 {[%eval 11,22] [%emt 0:00:
32]} (14. Nxf6+ $143 Rxf6 $19) (14. Nc2 fxg2 15. Kxg2 (15. Re1 Ng4) 15... Ne7
$40 {with a very strong attack to come} 16. f3 (16. Ba5 $5 Qd7 $1) (16. Nxe7+
Qxe7 17. f3 Nh5) 16... Nfxd5 17. exd5 Bf4) 14... Qd7 $1 $19 {[%eval -200,26]
[%emt 0:01:00] Diagram [#] (Bh3) SF takes 1 min to play the best move} 15. Re1
{[%eval 0,19] [%emt 0:00:16] losing, but so was everything else} (15. Nb6 Qh3
16. Qxf3 Nd7 17. Qxf8+ {forced} Nxf8 18. Nxa8 Ng6 19. Nc2 Nf4 $1 20. Ne1 h5 21.
f3 h4 22. gxf4 Bxf4 23. Rf2 Be3 24. Nc2 Bxf2+ 25. Kxf2 Qxh2+ 26. Ke3 h3 $19) (
15. Nxf6+ Rxf6 $19) 15... Qh3 $19 {[%eval -375,25] [%emt 0:00:34] I'm
surprised it'll take so long for Komodo to see that it is being destroyed,
whereas SF already knows it's winning} 16. Bf1 {[%eval -34,20] [%emt 0:00:45]}
Qh5 {[%eval -466,26] [%emt 0:00:44] (Qh6)} 17. c5 {[%eval -33,19] [%emt 0:00:
43]} Ng4 $19 {[%eval -666,26] [%emt 0:00:56] all very straightforward
attacking moves by SF, yet Komodo only now begins to properly evaluate the
unstoppable danger} 18. h3 {[%eval -322,20] [%emt 0:03:54]} Nh6 $1 {[%eval
-674,27] [%emt 0:00:33]} (18... Nxf2 19. Kxf2 {is also strong, but less clear})
19. Re3 {[%eval -321,19] [%emt 0:01:00] desperate attempt to slow down Black's
attack} Bxh3 {[%eval -777,26] [%emt 0:00:33] (dxc5)} 20. Rxf3 {[%eval -311,19]
[%emt 0:00:38] (Bxh3)} Rxf3 {[%eval -830,26] [%emt 0:00:26]} 21. Bxh3 {[%eval
-334,21] [%emt 0:00:32]} Raf8 {[%eval -868,28] [%emt 0:00:33] resignable
already} 22. Be6+ {[%eval -551,20] [%emt 0:02:50] (Ne7+)} Kh8 {[%eval -858,27]
[%emt 0:00:08]} 23. Nc4 {[%eval -614,21] [%emt 0:01:33]} Ng4 {[%eval -913,31]
[%emt 0:00:34]} 24. Bxg4 {[%eval -635,20] [%emt 0:00:13]} Qxg4 {[%eval -965,32]
[%emt 0:00:30]} 25. Qe1 {[%eval -674,22] [%emt 0:01:08]} Rxf2 {[%eval -1062,32]
[%emt 0:00:34]} 26. Qxf2 {[%eval -697,22] [%emt 0:00:11]} Rxf2 {[%eval -1082,
32] [%emt 0:00:33]} 27. Kxf2 {[%eval -667,23] [%emt 0:00:11]} Qxe4 {[%eval
-1098,32] [%emt 0:00:33] Fritz GUI adj} 0-1

[/pgn]

A couple of diagrams, one from the first game

[D]2r2rk1/1p4pp/p2pb3/4p2q/2P1Pn1n/1PB2pP1/P1N2P2/R2QRBK1 w - - 0 24

and one from the second

[D]r1b2rk1/1p1q2pp/p1np1n2/3Np1b1/2P1P3/N1BB1pP1/PP3P1P/R2Q1RK1 w - - 1 15

Cheers,
CL

Thanks for sharing this material Carl

I like to watch how the chess engines evolve with time and improve their performance in particular positions were they were handling poorly before....
Cheers,
Dr.D

[overlord]

Hello Lyudmil I will do it immediately when I will have some games against Stockfish DD. Until now I was playing against Stockfish 4 By the way...nice win with white in Stonewall

[Lyudmil Tsvetkov]

You took a shot , and now you are joking? In your previous post you insinuated Stockfish testing is wack compared to Houdart's tests with 10 opponents? I guess you are joking everywhere.

Hi Daniel, you should be sensitive to irony, but also sensitive to serious statements. My words that Stockfsih got only marginally better were some sort of irony, while my opinion that Mr. Houdard has the best testing framework in terms of the foreign opponent engines were very serious.

Well the point remains that closed positions games don't prove anything about weakness, infact it probably says more about the author's priority with his engine development,i.e. rejecting useless feature requests . How strong are you btw? If you are a 2000 elo, you should be producing these games (wins) 1 in 1000, not at the rate you are producing them

There are 2 possibilities, either I am stronger than 2000 elo, or I have been playing some 3000 blitz games per day/night.

[Dr.Wael Deeb]

You took a shot , and now you are joking? In your previous post you insinuated Stockfish testing is wack compared to Houdart's tests with 10 opponents? I guess you are joking everywhere.

Hi Daniel, you should be sensitive to irony, but also sensitive to serious statements. My words that Stockfsih got only marginally better were some sort of irony, while my opinion that Mr. Houdard has the best testing framework in terms of the foreign opponent engines were very serious.

Well the point remains that closed positions games don't prove anything about weakness, infact it probably says more about the author's priority with his engine development,i.e. rejecting useless feature requests . How strong are you btw? If you are a 2000 elo, you should be producing these games (wins) 1 in 1000, not at the rate you are producing them

There are 2 possibilities, either I am stronger than 2000 elo, or I have been playing some 3000 blitz games per day/night.

Just one statement:

You definitely play above the 2000 Elo barrier....
Dr.D

[Lyudmil Tsvetkov]

These games were played as part of a mini-testmatch, using a special test suite of mine. The position used here is one of my favorites, since it works well to highlight engine strengths and weaknesses. It is a subvariation of the B32 Neo-Sveshnikov Sicilian.

Stockfish (one of the recent versions with Syzygy TB support was tested here) has greatly impressed me. SF4 used to play weakly in this test opening; with White it tended to choose 10. Qd1-h5 followed by Qh5-d1 on the next move, which was really dubious, but now opts for the calm and solid 10. 0-0.

However, that is not even the main story. It is SF's strong and brilliant attacking play with Black in a semi-closed position that leaves a lasting impression. At the same time, on the flipside, SF's opponent, Komodo6 is completely crushed in both games with White -- more badly than I have ever seen Komodo lose, with one loss in 27 moves at a time control of 25m+5s! These 2 games were just as revealing about Komodo's play in this type of position involving Kingside attacks. I hope to eventually test the new Komodo with the same openings.



Here we go:

[pgn]

[Event "15m3s-SFsbK6 test"]
[Site "?"]
[Date "2013.11.29"]
[Round "1.1"]
[White "Komodo 6 64-bit"]
[Black "Stockfish 241113 64 SSE4.2sb"]
[Result "0-1"]
[ECO "B32"]
[Annotator "0.06;0.16"]
[PlyCount "76"]
[EventDate "2013.11.29"]

{Intel(R) Core(TM) i3-2120 CPU @ 3.30GHz 3292 MHz W=19.6 plies; 1,143kN/s B=24.
8 plies; 1,580kN/s 1 core, 512 MB hash each, ponder off} 1. e4 c5 2. Nf3 Nc6 3.
d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. N1c3 a6 8. Na3 f5 9. Bd3 f4 10. Nd5 {
[%eval 6,21] [%emt 0:00:25] first move out of book is somewhat overambitious,
and probably not White's best; recent versions of SF play the sensible 10.0-0
here, whereas SF4 used to play the awful 10.Qh5} Nf6 {[%eval 16,23] [%emt 0:00:
27]} 11. O-O {[%eval 9,22] [%emt 0:00:53] (Bd2)} O-O {[%eval 0,24] [%emt 0:00:
15]} 12. Bd2 {[%eval 1,20] [%emt 0:00:57]} Be6 {[%eval 8,23] [%emt 0:00:21]
(Qe8)} ({I've even seen} 12... Qe8 {!!?} 13. Nc7 Qg6 $40 {with dangerous
attacking prospects for Black; ironically, Komodo considered this in its PV,
yet look how the game turned out}) 13. Bc3 $6 {[%eval 4,21] [%emt 0:01:27]
seems positionally slow and tactically inaccurate} (13. Nc2 $5 {the Knight
needs to be better centralized anyway} Rc8 14. Rc1 f3 $2 15. Nxe7+ $1 $16 Nxe7
16. Qxf3 $16 Nfd5 17. Qg3 {Black would have no compensation for the pawn here})
13... Rc8 {[%eval 10,23] [%emt 0:00:21]} ({Black could already try} 13... f3 $5
14. g3 Qe8 $1 $40 15. Nc7 $4 Qh5 $19) 14. b3 {[%eval 11,21] [%emt 0:01:26]
(Nc2)} f3 $1 {[%eval -34,21] [%emt 0:00:24] (Qe8) the pawn can't be taken} 15.
g3 {[%eval 10,20] [%emt 0:00:19] (Nc2)} (15. Nxe7+ $6 Nxe7 16. Qxf3 Nfd5 $17 {
this now hits both the Queen and misplaced Bishop on c3}) 15... Qe8 {[%eval
-22,23] [%emt 0:00:25]} 16. Nc2 {[%eval 0,20] [%emt 0:00:23]} Ng4 {[%eval -48,
25] [%emt 0:00:50] (Bd8)} 17. h3 {[%eval 2,19] [%emt 0:00:40]} Nf6 $5 {[%eval
-78,25] [%emt 0:01:16] I'd expected Ng4-h6, but the Knight has already
provoked a further weakness} (17... Nh6 $17) 18. h4 {[%eval 0,20] [%emt 0:00:
21]} Nh5 $1 $17 {[%eval -86,24] [%emt 0:00:19] (Bd8)} 19. Nxe7+ {[%eval -3,18]
[%emt 0:00:46]} Nxe7 $1 {[%eval -82,23] [%emt 0:00:20]} 20. Kh2 {[%eval -16,19]
[%emt 0:00:29] (Ne3)} Nf4 $3 {[%eval -78,22] [%emt 0:00:21] (Qg6) White's
position is totally compromised, but Komodo has no awareness of the deeper
dangers} 21. Re1 {[%eval 0,19] [%emt 0:00:37] (Rh1)} (21. gxf4 Rxf4 $19) 21...
Qh5 $19 {[%eval -397,22] [%emt 0:00:19] (Ng2) and now SF sees itself as
clearly winning} 22. Bf1 {[%eval 0,19] [%emt 0:00:12] (Qd2)} Neg6 {[%eval -522,
23] [%emt 0:00:14] (Nc6)} 23. Kg1 {[%eval -230,17] [%emt 0:00:21] Komodo
finally sees it's busted} Nxh4 $1 {[%eval -545,24] [%emt 0:00:13] Diagram [#]
nice} 24. Qxd6 {[%eval -229,20] [%emt 0:00:21]} Nhg2 {[%eval -587,26] [%emt 0:
00:28]} 25. Qxe5 {[%eval -298,21] [%emt 0:00:20]} Nh3+ {[%eval -604,26] [%emt
0:00:13]} 26. Kh2 {[%eval -304,19] [%emt 0:00:03]} Ng5+ {[%eval -622,26] [%emt
0:00:15] (Qxe5)} 27. Kg1 {[%eval -187,17] [%emt 0:00:03]} Rf6 {[%eval -632,28]
[%emt 0:00:18] hehe } 28. Ne3 {[%eval -297,20] [%emt 0:00:21]} Nh3+ {[%eval
-664,26] [%emt 0:00:13]} 29. Kh2 {[%eval -354,20] [%emt 0:00:05]} Qh6 {[%eval
-731,27] [%emt 0:00:17]} 30. Qxf6 {[%eval -385,21] [%emt 0:00:18] position was
hopeless for White} gxf6 {[%eval -759,26] [%emt 0:00:18]} 31. Nxg2 {[%eval
-397,22] [%emt 0:00:09]} fxg2 {[%eval -791,25] [%emt 0:00:17]} 32. Kxg2 {
[%eval -291,18] [%emt 0:00:03]} f5 {[%eval -800,26] [%emt 0:00:21] (Ng5)} 33.
f4 {[%eval -345,18] [%emt 0:00:16] (exf5)} Kf7 {[%eval -953,23] [%emt 0:00:17]
(Nxf4+)} 34. Kf3 {[%eval -454,18] [%emt 0:00:43]} Rd8 {[%eval -1046,25] [%emt
0:00:23]} 35. Bxh3 {[%eval -613,18] [%emt 0:00:19]} fxe4+ {[%eval -1634,25]
[%emt 0:00:16] (Qxh3)} 36. Rxe4 {[%eval -842,19] [%emt 0:00:10]} Qxh3 {[%eval
-2038,26] [%emt 0:00:17]} 37. Rg1 {[%eval -963,21] [%emt 0:00:21]} Qh5+ {
[%eval -9185,29] [%emt 0:00:11] (Rd3+)} 38. Kf2 {[%eval -1077,21] [%emt 0:00:
13]} Rd3 {[%eval -9305,31] [%emt 0:00:16] adj} 0-1

[Event "25m5s-SFsbK6 test"]
[Site "?"]
[Date "2013.11.29"]
[Round "1.1"]
[White "Komodo 6 64-bit MP"]
[Black "Stockfish 241113 64 SSE4.2sb"]
[Result "0-1"]
[ECO "B32"]
[Annotator "0.15;0.00"]
[PlyCount "54"]
[EventDate "2013.11.29"]
[EventType "tourn"]

{Intel(R) Core(TM) i3-2120 CPU @ 3.30GHz 3292 MHz W=20.8 plies; 2,071kN/s
B=27.8 plies; 2,815kN/s; 100 TBAs} {2 cores, 1 GB hash each, ponder off} 1. e4
c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. N1c3 a6 8. Na3 f5 9.
Bd3 f4 10. Nd5 {[%eval 15,23] [%emt 0:01:08]} Bg5 $5 {[%eval 0,26] [%emt 0:00:
30] (Nf6)} 11. Bd2 {[%eval 19,21] [%emt 0:01:03] (Nc2)} Nf6 {[%eval 0,26]
[%emt 0:00:33]} 12. O-O {[%eval 11,22] [%emt 0:01:11]} O-O {[%eval 0,27] [%emt
0:00:41]} 13. Bc3 $2 {[%eval 17,22] [%emt 0:00:57] (Nc2)} ({better is} 13. Nc2
$142 {so that f4-f3 is prevented by Bxg5}) 13... f3 $1 $17 {[%eval -131,25]
[%emt 0:00:26] (Ne7) now White's position is compromised, and Black gets a
crushing attack against the porous Kingside} 14. g3 {[%eval 11,22] [%emt 0:00:
32]} (14. Nxf6+ $143 Rxf6 $19) (14. Nc2 fxg2 15. Kxg2 (15. Re1 Ng4) 15... Ne7
$40 {with a very strong attack to come} 16. f3 (16. Ba5 $5 Qd7 $1) (16. Nxe7+
Qxe7 17. f3 Nh5) 16... Nfxd5 17. exd5 Bf4) 14... Qd7 $1 $19 {[%eval -200,26]
[%emt 0:01:00] Diagram [#] (Bh3) SF takes 1 min to play the best move} 15. Re1
{[%eval 0,19] [%emt 0:00:16] losing, but so was everything else} (15. Nb6 Qh3
16. Qxf3 Nd7 17. Qxf8+ {forced} Nxf8 18. Nxa8 Ng6 19. Nc2 Nf4 $1 20. Ne1 h5 21.
f3 h4 22. gxf4 Bxf4 23. Rf2 Be3 24. Nc2 Bxf2+ 25. Kxf2 Qxh2+ 26. Ke3 h3 $19) (
15. Nxf6+ Rxf6 $19) 15... Qh3 $19 {[%eval -375,25] [%emt 0:00:34] I'm
surprised it'll take so long for Komodo to see that it is being destroyed,
whereas SF already knows it's winning} 16. Bf1 {[%eval -34,20] [%emt 0:00:45]}
Qh5 {[%eval -466,26] [%emt 0:00:44] (Qh6)} 17. c5 {[%eval -33,19] [%emt 0:00:
43]} Ng4 $19 {[%eval -666,26] [%emt 0:00:56] all very straightforward
attacking moves by SF, yet Komodo only now begins to properly evaluate the
unstoppable danger} 18. h3 {[%eval -322,20] [%emt 0:03:54]} Nh6 $1 {[%eval
-674,27] [%emt 0:00:33]} (18... Nxf2 19. Kxf2 {is also strong, but less clear})
19. Re3 {[%eval -321,19] [%emt 0:01:00] desperate attempt to slow down Black's
attack} Bxh3 {[%eval -777,26] [%emt 0:00:33] (dxc5)} 20. Rxf3 {[%eval -311,19]
[%emt 0:00:38] (Bxh3)} Rxf3 {[%eval -830,26] [%emt 0:00:26]} 21. Bxh3 {[%eval
-334,21] [%emt 0:00:32]} Raf8 {[%eval -868,28] [%emt 0:00:33] resignable
already} 22. Be6+ {[%eval -551,20] [%emt 0:02:50] (Ne7+)} Kh8 {[%eval -858,27]
[%emt 0:00:08]} 23. Nc4 {[%eval -614,21] [%emt 0:01:33]} Ng4 {[%eval -913,31]
[%emt 0:00:34]} 24. Bxg4 {[%eval -635,20] [%emt 0:00:13]} Qxg4 {[%eval -965,32]
[%emt 0:00:30]} 25. Qe1 {[%eval -674,22] [%emt 0:01:08]} Rxf2 {[%eval -1062,32]
[%emt 0:00:34]} 26. Qxf2 {[%eval -697,22] [%emt 0:00:11]} Rxf2 {[%eval -1082,
32] [%emt 0:00:33]} 27. Kxf2 {[%eval -667,23] [%emt 0:00:11]} Qxe4 {[%eval
-1098,32] [%emt 0:00:33] Fritz GUI adj} 0-1

[/pgn]

A couple of diagrams, one from the first game

[D]2r2rk1/1p4pp/p2pb3/4p2q/2P1Pn1n/1PB2pP1/P1N2P2/R2QRBK1 w - - 0 24

and one from the second

[D]r1b2rk1/1p1q2pp/p1np1n2/3Np1b1/2P1P3/N1BB1pP1/PP3P1P/R2Q1RK1 w - - 1 15

Cheers,
CL

Hi Carl, thanks for the games.

That is the problem with many test suites and opening books: they contain an awful percentage of unequal positions, just like the one you used. 9. Bd3 is very bad seemingly, somewhere to the level of Nunn . For me, after black's f3 in both games, white is hopeless. Probably the only white chance to hold the game would have been playing f3 itself. Interesting that Komodo does not find it at such a long TC.

You conveyed a point; nice comments btw.

[overlord]

You are playinng definitely better than 2000 ELO. If I have seen just your games I would bet something between 2250 - 2350 FIDE. Anyway, playing against human opponents is something completly different and I didn´t seen your human vs human games

[Uri Blass]

You took a shot , and now you are joking? In your previous post you insinuated Stockfish testing is wack compared to Houdart's tests with 10 opponents? I guess you are joking everywhere.

Hi Daniel, you should be sensitive to irony, but also sensitive to serious statements. My words that Stockfsih got only marginally better were some sort of irony, while my opinion that Mr. Houdard has the best testing framework in terms of the foreign opponent engines were very serious.

Well the point remains that closed positions games don't prove anything about weakness, infact it probably says more about the author's priority with his engine development,i.e. rejecting useless feature requests . How strong are you btw? If you are a 2000 elo, you should be producing these games (wins) 1 in 1000, not at the rate you are producing them

There are 2 possibilities, either I am stronger than 2000 elo, or I have been playing some 3000 blitz games per day/night.

Do you play in tournament against humans for fide rating?

If not then why not?

If you are a strong player then you can win some money prize from games against humans when you win no money from the good games that you play against chess programs.

[Lyudmil Tsvetkov]

Now that Marco enjoys to see Stockfish losing, I will post some more games in that vein. They are all with white, please do not ask me why, I just considered my chances higher when playing the white side and somehow played too few games with black against DD.

3 wins in the A07 line (I do not know what it is, but it yields good results against engines):

[pgn][PlyCount "91"]
[Event "Blitz 2m+2s"]
[Site "Sofia"]
[Date "2013.12.05"]
[White "Tsvetkov, Lyudmil"]
[Black "Stockfish DD 64 SSE4.2"]
[Result "1-0"]
[ECO "A07"]
[TimeControl "120+2"]
[Annotator "Tsvetkov,Lyudmil"]
[MLNrOfMoves "45"]
[MLFlags "010100"]

{512MB, Dell XPS 4Cores} 1. d3 {[%emt 0:00:00]} 1... d5 {[%emt 0:00:08]} 2. Nf3
{[%emt 0:00:01]} 2... Nf6 {[%emt 0:00:07]} 3. g3 {[%emt 0:00:01]} 3... Nc6
{[%emt 0:00:05]} 4. Bg2 {[%emt 0:00:02]} 4... e5 {[%emt 0:00:09]} 5. O-O
{[%emt 0:00:02]} 5... Be7 {[%emt 0:00:05]} 6. Nc3 {[%emt 0:00:02]} 6... O-O
{[%emt 0:00:06]} 7. e4 {[%emt 0:00: 02]} 7... d4 {[%emt 0:00:03]} 8. Ne2
{[%emt 0:00:02]} 8... Bg4 {[%emt 0:00:05]} 9. h3 {[%emt 0:00:02]} 9... Be6
{[%emt 0:00:05]} 10. Kh1 {[%emt 0:00:03]} 10... Nd7 {[%emt 0:00: 09]} 11. Nfg1
{[%emt 0:00:02]} 11... f6 {[%emt 0:00:07]} 12. f4 {[%emt 0:00:02]} 12... Ncb8
{[%emt 0:00:02]} 13. f5 {[%emt 0:00:02]} 13... Bf7 {[%emt 0:00:03]} 14. g4
{[%emt 0: 00:02]} 14... c5 {[%emt 0:00:04]} 15. b3 {[%emt 0:00:05]} 15... Nc6
{[%emt 0:00:03]} 16. h4 {[%emt 0:00:04]} 16... b5 {[%emt 0:00:06]} 17. Ng3
{[%emt 0:00:12]} 17... c4 {[%emt 0:00: 04]} 18. Nf3 {[%emt 0:00:05]} 18... Nc5
{[%emt 0:00:08]} 19. g5 {[%emt 0:00:10]} 19... cxd3 {[%emt 0:00:08]} 20. cxd3
{[%emt 0:00:01]} 20... Nb4 {[%emt 0:00:18]} 21. g6 {[%emt 0:00:05]} 21... hxg6
{[%emt 0:00:03]} 22. fxg6 {[%emt 0:00:02]} 22... Bxg6 {[%emt 0:00:01]} 23. h5
{[%emt 0:00:02]} 23... Bh7 {[%emt 0:00:05]} 24. Nh4 {[%emt 0:00:03]} 24... Nbxd3
{[%emt 0:00:05]} 25. Ngf5 {[%emt 0:00:02]} 25... Nxc1 {[%emt 0:00:02]} 26. Rxc1
{[%emt 0:00:05]} 26... Ne6 {[%emt 0:00:00]} 27. Ng6 {[%emt 0:00:14]} 27... Bb4
{[%emt 0:00: 00]} 28. Qg4 {[%emt 0:00:14]} 28... Bxg6 {[%emt 0:00:09]} 29. hxg6
{[%emt 0:00:02]} 29... Ng5 {[%emt 0:00:05]} 30. Qh5 {[%emt 0:00:12]} 30... Rc8
{[%emt 0:00:07]} 31. Bf3 {[%emt 0:00:24]} 31... Qa5 {[%emt 0:00:04]} 32. a4
{[%emt 0:00:08]} 32... Ba3 {[%emt 0:00: 06]} 33. Ra1 {[%emt 0:00:07]} 33... Qc3
{[%emt 0:00:00]} 34. Rxa3 {[%emt 0:00:06]} 34... Rc7 {[%emt 0:00:03]} 35. Ra2
{[%emt 0:00:13]} 35... Qd3 {[%emt 0:00:02]} 36. Kg1 {[%emt 0:00:08]} 36... Re8
{[%emt 0:00:00]} 37. Rh2 {[%emt 0:00:11]} 37... Nxf3+ {[%emt 0: 00:03]} 38. Qxf3
{[%emt 0:00:03]} 38... Qxf3 {[%emt 0:00:04]} 39. Rxf3 {[%emt 0:00: 06]} 39...
Rc1+ {[%emt 0:00:02]} 40. Rf1 {[%emt 0:00:08]} 40... Rc7 {[%emt 0:00:01]} 41.
Rh7 {[%emt 0:00:08]} 41... bxa4 {[%emt 0:00:01]} 42. bxa4 {[%emt 0:00:31]} 42...
Rec8 {[%emt 0:00:03]} 43. Kg2 {[%emt 0:00:21]} 43... Rc2+ {[%emt 0:00:05]} 44.
Rf2 {[%emt 0:00:09]} 44... Rxf2+ {[%emt 0:00:00]} 45. Kxf2 {[%emt 0:00:01]}
45... Rc7 {[%emt 0:00:02]} 46. Nh6+ {[%emt 0:00:28]} 1-0

[PlyCount "77"]
[Event "Blitz 2m+2s"]
[Site "Sofia"]
[Date "2013.12.05"]
[White "Tsvetkov, Lyudmil"]
[Black "Stockfish DD 64 SSE4.2"]
[Result "1-0"]
[ECO "A07"]
[TimeControl "120+2"]
[Annotator "Tsvetkov,Lyudmil"]
[MLNrOfMoves "38"]
[MLFlags "000100"]

{512MB, Dell XPS 4Cores} 1. d3 {[%emt 0:00:00]} 1... d5 {[%emt 0:00:08]} 2. Nf3
{[%emt 0:00:02]} 2... Nf6 {[%emt 0:00:05]} 3. g3 {[%emt 0:00:02]} 3... Nc6
{[%emt 0:00:03]} 4. Bg2 {[%emt 0:00:02]} 4... e5 {[%emt 0:00:03]} 5. O-O
{[%emt 0:00:02]} 5... Be7 {[%emt 0:00:07]} 6. Nc3 {[%emt 0:00:02]} 6... O-O
{[%emt 0:00:05]} 7. e4 {[%emt 0:00: 03]} 7... d4 {[%emt 0:00:00]} 8. Ne2
{[%emt 0:00:03]} 8... Bg4 {[%emt 0:00:04]} 9. h3 {[%emt 0:00:02]} 9... Be6
{[%emt 0:00:01]} 10. Kh1 {[%emt 0:00:03]} 10... Qc8 {[%emt 0:00: 12]} 11. Nfg1
{[%emt 0:00:03]} 11... Ne8 {[%emt 0:00:16]} 12. f4 {[%emt 0:00:05]} 12... f6
{[%emt 0:00:02]} 13. f5 {[%emt 0:00:02]} 13... Bf7 {[%emt 0:00:03]} 14. g4
{[%emt 0: 00:01]} 14... Nb8 {[%emt 0:00:03]} 15. h4 {[%emt 0:00:04]} 15... c5
{[%emt 0:00:03]} 16. b3 {[%emt 0:00:02]} 16... Nc6 {[%emt 0:00:08]} 17. Ng3
{[%emt 0:00:08]} 17... b5 {[%emt 0:00: 06]} 18. g5 {[%emt 0:00:07]} 18... c4
{[%emt 0:00:08]} 19. Bh3 {[%emt 0:00:11]} 19... Qa6 {[%emt 0:00:04]} 20. g6
{[%emt 0:00:27]} 20... hxg6 {[%emt 0:00:00]} 21. fxg6 {[%emt 0:00:07]} 21...
Bxg6 {[%emt 0:00:09]} 22. h5 {[%emt 0:00:06]} 22... Bh7 {[%emt 0:00:00]} 23. Nf3
{[%emt 0:00:28]} 23... cxd3 {[%emt 0:00:06]} 24. cxd3 {[%emt 0:00:02]} 24... Nd8
{[%emt 0:00:18]} 25. Nh4 {[%emt 0:00:07]} 25... Bb4 {[%emt 0:00:08]} 26. a4
{[%emt 0: 00:20]} 26... Bc3 {[%emt 0:00:06]} 27. Ra2 {[%emt 0:00:06]} 27... Rf7
{[%emt 0:00:07]} 28. Ngf5 {[%emt 0:00:19]} 28... bxa4 {[%emt 0:00:12]} 29. bxa4
{[%emt 0:00:15]} 29... Rb7 {[%emt 0:00:03]} 30. Rg2 {[%emt 0:00:05]} 30... Rab8
{[%emt 0:00:03]} 31. Rfg1 {[%emt 0:00:49]} 31... Ne6 {[%emt 0:00:05]} 32. Ng6
{[%emt 0:00:43]} 32... Ng5 {[%emt 0:00:00]} 33. Bxg5 {[%emt 0:00:08]} 33... Bxg6
{[%emt 0:00:03]} 34. Bc1 {[%emt 0:02:25]} 34... Bxf5 {[%emt 0:00:05]} 35. Bxf5
{[%emt 0:00:02]} 35... Kh8 {[%emt 0:00:02]} 36. Rg6 {[%emt 0:00:24]} 36... Nd6
{[%emt 0:00:02]} 37. h6 {[%emt 0:00:07]} 37... Nxf5 {[%emt 0:00:01]} 38. exf5
{[%emt 0:00:14]} 38... Qc6+ {[%emt 0:00:00]} 39. Kh2 {[%emt 0:00:22]} 1-0

[PlyCount "75"]
[Event "Blitz 2m+2s"]
[Site "Sofia"]
[Date "2013.12.05"]
[White "Tsvetkov, Lyudmil"]
[Black "Stockfish DD 64 SSE4.2"]
[Result "1-0"]
[ECO "A07"]
[TimeControl "120+2"]
[Annotator "Tsvetkov,Lyudmil"]
[MLNrOfMoves "37"]
[MLFlags "000100"]

{512MB, Dell XPS 4Cores} 1. d3 {[%emt 0:00:00]} 1... d5 {[%emt 0:00:08]} 2. Nf3
{[%emt 0:00:02]} 2... Nc6 {[%emt 0:00:03]} 3. g3 {[%emt 0:00:02]} 3... e5
{[%emt 0:00:03]} 4. Bg2 {[%emt 0:00:02]} 4... Nf6 {[%emt 0:00:07]} 5. O-O
{[%emt 0:00:02]} 5... Be7 {[%emt 0:00:07]} 6. Nc3 {[%emt 0:00:02]} 6... O-O
{[%emt 0:00:07]} 7. e4 {[%emt 0:00: 02]} 7... d4 {[%emt 0:00:03]} 8. Ne2
{[%emt 0:00:03]} 8... Qd6 {[%emt 0:00:01]} 9. h3 {[%emt 0:00:02]} 9... a5
{[%emt 0:00:05]} 10. Kh1 {[%emt 0:00:02]} 10... a4 {[%emt 0:00:07]} 11. a3
{[%emt 0:00:03]} 11... Nd7 {[%emt 0:00:03]} 12. Nfg1 {[%emt 0:00:03]} 12... f6
{[%emt 0:00:05]} 13. f4 {[%emt 0:00:02]} 13... Nc5 {[%emt 0:00:01]} 14. f5
{[%emt 0: 00:03]} 14... b6 {[%emt 0:00:08]} 15. g4 {[%emt 0:00:02]} 15... Bb7
{[%emt 0:00:15]} 16. h4 {[%emt 0:00:04]} 16... Nd8 {[%emt 0:00:11]} 17. Ng3
{[%emt 0:00:25]} 17... Nf7 {[%emt 0:00: 05]} 18. Nf3 {[%emt 0:00:03]} 18... Qd8
{[%emt 0:00:03]} 19. Rg1 {[%emt 0:00:06]} 19... Nd7 {[%emt 0:00:06]} 20. Bh3
{[%emt 0:00:03]} 20... h6 {[%emt 0:00:08]} 21. Nh5 {[%emt 0: 00:04]} 21... Nc5
{[%emt 0:00:07]} 22. Qe2 {[%emt 0:00:08]} 22... Bc6 {[%emt 0:00:18]} 23. Bd2
{[%emt 0:00:07]} 23... Ra7 {[%emt 0:00:12]} 24. Rg2 {[%emt 0:00:03]} 24... Qa8
{[%emt 0:00:06]} 25. Re1 {[%emt 0:00:12]} 25... Nd6 {[%emt 0:00:03]} 26. Ng3
{[%emt 0:00:06]} 26... Qe8 {[%emt 0:00:07]} 27. g5 {[%emt 0:00:10]} 27... fxg5
{[%emt 0:00:00]} 28. hxg5 {[%emt 0:00:01]} 28... Bxg5 {[%emt 0:00:02]} 29. Nxg5
{[%emt 0:00:10]} 29... hxg5 {[%emt 0: 00:00]} 30. Bxg5 {[%emt 0:00:03]} 30...
Rf7 {[%emt 0:00:03]} 31. Bg4 {[%emt 0:00:36]} 31... Nd7 {[%emt 0:00:06]} 32. Bh5
{[%emt 0:00:11]} 32... Kf8 {[%emt 0:00:00]} 33. Rh2 {[%emt 0:00:12]} 33... Nf6
{[%emt 0:00:03]} 34. Bg6 {[%emt 0:01:17]} 34... Ke7 {[%emt 0:00: 02]} 35. Rh7
{[%emt 0:01:18]} 35... Qf8 {[%emt 0:00:00]} 36. Nh5 {[%emt 0:01:37]} 36... Kd8
{[%emt 0:00:00]} 37. Nxf6 {[%emt 0:00:28]} 37... Rxf6 {[%emt 0:00:05]} 38. Qh5
{[%emt 0:00:33]} 1-0
[/pgn]

And some highlights.

[d]r1bq1rk1/ppp1bppp/2n2n2/3pp3/4P3/2NP1NP1/PPP2PBP/R1BQ1RK1 b - - 0 7
The A07 that is supposed to give good anticomputer results.

[d]r2q1rk1/pppnb1pp/2n1bp2/4p3/3pPP2/3P2PP/PPP1N1B1/R1BQ1RNK b - - 0 12
Now Stockfish should capture on f4 at all costs, but it does not do so and a chain favouring white arises.

[d]r2q1rk1/pp1nbbpp/2n2p2/2p1pP2/3pP1P1/1P1P3P/P1P1N1B1/R1BQ1RNK w - - 0 16
This is very favourable for white but Stockfish does not see it.

[d]r2q1rk1/p3bbpp/5pP1/1pn1pP2/1n1pP2P/1P1P1NN1/P5B1/R1BQ1R1K b - - 0 21
Stockfish has a strong attack on d3, but this is of little importance right now, as white has tremendous kingside attack. Probably Stockfish did not expect g6. I am absolutely certain white is already winning here. Interesting if Stockfish sees a convincing score for white.

[d]r2q1rk1/p5pb/4npN1/1p2pN1P/1b1pP1Q1/1P6/P5B1/2R2R1K b - - 0 28
I do not know but here already Stockfish should see a white win. It seems that Stockfish has some problems with opponent initiative. It plays very sharp attacking chess, but it can be beaten if you play even sharper, with sacrifices. The trick is to sacrifice before Stockfish sees itself losing.

[d]2rq1rk1/p5p1/5pP1/1p2pNnQ/1b1pP3/1P6/P5B1/2R2R1K w - - 0 31
Stockfish underestimates the power of the g6 pawn. A storming/attacking pawn on the 6th rank for me should be scored higher, even if blocked.

[d]4r1k1/p1r3p1/5pP1/1p2pNnQ/P2pP3/1P1q1B2/7R/5RK1 b - - 0 37
Mate is coming

[d]6k1/p1r3pR/5pPN/4p3/P2pP3/8/5K2/8 b - - 0 46
Stockfish here resigned.

[d]rnq1nrk1/ppp1bbpp/5p2/4pP2/3pP1P1/3P3P/PPP1N1B1/R1BQ1RNK w - - 0 15
Stockfish again allows a tremendous white chain. It has just played the very slow move Nb8, preparing queenside attack with c5, but that is not enough. The white position is simply won here most probably, but interesting if the engine sees it at that point.

[d]1r1nn1k1/pr4pb/q4p2/4pN1P/P2pP2N/2bP3B/6R1/2BQ2RK b - - 0 31
Black is hopeless here, and I am sure that Stockfish recognizes that. Stockfish underestimated the initiative of the white pieces attained at the cost of a pawn. What made possible the pawn sacrifice however and the subsequent initiative was the large white chain aimed at the enemy king. Stockfish frequently recognizes this, but not always, obviously chains are worth even more.

[d]1r2n1k1/pr4p1/q4pb1/4pNBP/P2pP3/2bP3B/6R1/3Q2RK w - - 0 34
Here I thought very long (not at all blitz like), because in this position there were big chances that with a tremendous white advantage white could lose by a single tactical mistake. Fortunately, I found somehow Bc1. hg6 is bad as after fg5 the black knight goes to f6 keeping h7 under control and there is no mate.

[d]1r5k/pr4p1/q2n1pRP/4pB2/P2pP3/2bP4/8/2BQ2RK b - - 0 37
This is already clear.

[d]3q1rk1/r1p1bnp1/1pb2p1p/2n1pP1N/p2pP1PP/P2P1N1B/1PPBQ3/R5RK w - - 0 24

Stockfish has some problems with playing repeatedly with one and the same piece, as it did in the game with Nd7-c5-d7-c5. When you repeat moves with one and the same piece and your score does not improve, there should be something wrong. Ra7 that was just played is also quite dubious, but the truth is that black simply does not have counterplay.

[d]q4rk1/r1p1bnp1/1pb2p1p/2n1pP1N/p2pP1PP/P2P1N1B/1PPBQ1R1/4R2K b - - 0 25
If white does not protect sufficiently e4, black can suddenly start winning the game by sacrificing on e4 from a completely lost position. How many humans would have allowed a sacrifice on e4 with disastrous results. I did not, but the merit for it goes entirely to Stockfish who taught me similar tricks.

[d]4q3/r1p1krp1/1pbn1nB1/4pPB1/p2pP3/P2P2N1/1PP1Q2R/4R2K w - - 0 35
Here again I thought for very long, but found the right continuation. It seems that Stockfish is beatable with very sharp play.

[d]3k1q2/r1p3pR/1pbn1rB1/4pPBQ/p2pP3/P2P4/1PP5/4R2K b - - 0 38
Here Stockfish resigned.

The conclusion could be that Stockfish underestimates opponent initiative with sacrifices, still slightly underestimates chains close to the enemy king, as well as storming/attacking pawns on the 6th rank when blocked.

Sorry again for posting only white games, but that is how things happen.

[Lyudmil Tsvetkov]

Do you play in tournament against humans for fide rating?

If not then why not?

If you are a strong player then you can win some money prize from games against humans when you win no money from the good games that you play against chess programs.

I used to play in the past, maybe some 10 years ago.

Reasons why I am not playing in human tournaments:
- mostly noisy conditions
- too much stress for nothing
- but primarily, I prefer to play where the really interesting chess is, i.e. against engines

As you probably know, all the good things in life are free.