Rebel 16.2: Impressive!

[mclane]

The major idea of building a mate net is, that the opponent is not seeing it.

If he would see the idea, he would defend.

To create a plan a human sacrifices BEST MOVES and material to get the opponent into the position .

Now how can you bring a strong chess engine that computes very deep into a position you can mate it, but it is not seeing in ?
By creating fog.

So if you want to bring your plan through, do NOT play best moves.
Because these best moves are seen by the opponent engine.

[chrisw]

Hello Chris:

Here an example of an attack being generated out of nowhere (well, actually the inferior black side of an UHO opening). The opponent didn't seem to play any "blunders", haha! TC=20+0.02, move times are about 0.5 seconds, long enough.

9 ... Rb8, then b5, just ridiculous, but it preempted any white attack and left black with a perfect launch pad after 19. O-O, all pieces perfectly poised on the back rank ....
I am quite impressed.

[pgn][Event "?"]
[Site "?"]
[Date "2023.02.24"]
[Round "102"]
[White "Seer-2.6"]
[Black "Chess-System-Tal-1.59"]
[Result "0-1"]
[ECO "C48"]
[Opening "Four knights"]
[Variation "Spanish Variation"]
[TimeControl "20+0.05"]
[PlyCount "60"]
[GameDuration "00:00:23"]
[GameEndTime "2023-02-24T11:09:48.684 W. Europe Standard Time"]
[GameStartTime "2023-02-24T11:09:24.908 W. Europe Standard Time"]

1. e4 { book } 1... e5 { book } 2. Nf3 { book } 2... Nc6 { book } 3. Nc3 {
book } 3... Nf6 { book } 4. Bb5 { book } 4... Bd6 { book } 5. d3 { book }
5... O-O { book } 6. a3 { book } 6... Re8 { book } 7. h3 { book } 7... Bf8
{ book } 8. Bc4 { book } 8... h6 { book } 9. Be3 { +1.09/16 0.86s } 9...
Rb8 { -1.79/16 1.1s } 10. g4 { +1.54/17 0.86s } 10... b5 { -1.98/16 0.70s }
11. Bxb5 { +1.69/17 0.52s } 11... Nd4 { -1.97/17 0.61s } 12. Nxd4 {
+1.68/16 0.42s } 12... exd4 { -2.08/18 1.1s } 13. Bxd4 { +1.41/17 0.67s }
13... c6 { -1.81/17 0.67s } 14. Ba4 { +1.42/17 0.57s } 14... Rxb2 {
-1.92/17 0.61s } 15. Ne2 { +1.68/17 0.75s } 15... Rb6 { -1.48/14 0.59s }
16. Bxb6 { +1.74/17 1.0s } 16... axb6 { -1.42/16 0.40s } 17. c4 { +1.50/17
1.6s } 17... b5 { -0.54/16 0.76s } 18. cxb5 { +2.05/16 0.51s } 18... d5 {
-0.48/15 0.48s } 19. O-O { +2.14/16 0.33s } 19... Bxg4 { -0.24/14 0.54s }
20. hxg4 { +2.44/17 0.49s } 20... Nxg4 { +2.12/14 0.39s } 21. Ng3 {
+2.67/18 0.41s } 21... Qh4 { +2.40/15 0.50s } 22. Kg2 { +2.78/17 0.33s }
22... Qh2+ { +2.40/14 0.41s } 23. Kf3 { +2.86/17 0.39s } 23... Bd6 {
+2.05/15 0.33s } 24. Kxg4 { 0.00/16 0.43s } 24... Qg2 { +17.37/14 0.30s }
25. Kh4 { 0.00/17 1.2s } 25... Re5 { +M11/29 0.40s } 26. Rh1 { -46.43/26
0.55s } 26... Be7+ { +M9/39 0.27s } 27. Kg4 { -46.44/30 0.28s } 27... Rg5+
{ +M7/52 0.26s } 28. Kh4 { -46.44/31 0.23s } 28... Rxg3+ { +M5/82 0.17s }
29. Kh5 { -46.45/33 0.25s } 29... Rg5+ { +M3/116 0.027s } 30. Kh4 {
-46.45/33 0.26s } 30... Re5# { +M1/116 0.020s, Black mates } 0-1

[/pgn]

I also find the game very interesting and impressive: while it is true that white did not always played the best moves (and sometimes played really bad moves), it is astonishing that the position is even at move 20 with black being a rook down! The lack of white king safety is enough to compensate a full rook. Other moves are curious or counter intuitive to me:

Hi to you too,
(not sure what easy for SF means below, btw)

9.- ..., b5 → gifting a pawn (maybe later recovered by 14.- ..., Rxb2). Easy for SF, but anyway, watch out.
11.- ..., Nd4 → gifting other pawn after the exchanges (counterplay on the b-file?). Easy for SF again.

difficult to fathom those moves, I saw it possibly that unless black does something very fast, he's going to get wasted on the Kside, where white has already begun an attack. b5 is something, maybe?

15.- ..., Rb6 → giving the exchange. Why? There were similar moves in eval without sac more material, but 'I play it because I can'. Easy for SF again.

Why? I would guess lookahead says the white king is being stripped of defenders by saccing an exchange that wasn't going to be attack-useful anyway, plus the white bishop also gets decoyed out of play - so that's both bishops removed from the potential action. f2 turns out to be a key square (bishop no linger there to defend it). Other consideration is that it defends c6. Frankly, its the last move I'ld even think of, but SF likes it too


17.- ..., b5 → other 'free' pawn! Just deviating white control over d5 square after 17.- c4?! Easy for SF again.

Yes, they are fighting here for the d5 square

19.- ..., Bxg4 → Going for the full rook down in an even position (though very risky for white) with the white king being very exposed. Easy for SF again.

Yup, whoosh, the de-nuded white king side gets torn open. SF wants Nxg5 here, btw

Does "easy for SF" mean SF would have played all those moves? In same time frame? I checked just now, some it plays, some not, it seems to waver between the same moves and something else quite often.

For me, the key move was the original Rb8 preparing b5, do other programs find that? I think it's one thing playing moves in a line and another thing entirely to find the plan (at the risk of exciting TC). So, yes, Rb8.



After 22.- Kg2? (the only move was 22.- f3), black was better and 24.- Kxg4? was the last mistake, with a checkmate short after.

isn't f3 immediate mate? am I missing something?

I guess that chess can be very special sometimes, with this kind of positions that easily fool (almost) everybody.

------------

[...]

It seems nothing has changed much from earlier days. Chess engines still count material. They don’t understand that chess is NOT about having the most material but MATING the opponent king.

Well, having more material than the opponent is usually a good strategy to win the game. It does not work always, of course, but most of the time.

Regards from Spain.

Ajedrecista.

[connor_mcmonigle]

...
It actually started with the fact that I wanted to build my own engine for InfinityChess ...

That's a very generous description. What you've done would be far more accurately described as "rebranding" than "building". Perhaps you'd have more appreciation for Chris and Ed's work if you had anything approaching a remote understanding of the effort required to actually build a top chess engine...

[Ajedrecista]

Hello again:

What I mean with 'easy for SF' is that I was replaying the game under Arena 2.0.1 GUI —entering the moves manually— with SF 15.1 in infinite analysis mode and Multi-PV = 7, and all these moves were the top choices in very few time, let's say less than a second. It is true that the evaluations were a little slower to find sometimes, i.e. the only move 21.- f3 for white took some seconds, 10 or 20 or so, to find a 0.00 or -0.02 or something like that instead of -0.50, but was still the top move from the start. Just talking from memory.

Regarding 22.- f3 as the only move: you catched a typo. It was at move 21, as I corrected in the previous paragraph. 22.- f3 is a boner indeed and very embarrassing even for me at blitz TC.

In my own words, 'being easy for SF' does not disdain CSTal work at all. That game is really enjoyable and creative. I like to look back sometimes just to remember and rejoice how computer chess started and how it is going: the effort of many, many people that contribute to reach unimaginable levels of play... and what remains to come. What a time to be alive!

Thank you very much to everyone that made/make/will make it possible.

Regards from Spain.

Ajedrecista.

[Rebel]

Good. I have one more question. I understand that there are engines where no source code is published, also for commercial reasons.

However, Rebel 16 is currently non-commercial.

Why don't you release source code? Maybe codes are included that could serve as ideas for the younger generation. What would be wrong with that?

Rebel 14 and 15 are open source, maybe one day Rebel 16 will, but not at this moment.

[Aldus]

I wouldn't have even read the topic if the word impressive hadn't been mentioned. So I was curious and installed the engine. But I couldn't find anything that I would call impressive.

A rating of 3400+ is pretty impressive.

These programs are history, and by being revisited over and over again (countless new Rebel variations) will not serve the advancement of computer chess.

You speak like every program(mer) has a duty to serve the advancement of computer chess (and in the way you see it fit). This is a bit weird.

Also, playing bullet games with fast time controls is interesting. Yes, on modern hardware SF searches probably millions of positions per second and reaches some 40+ depths. But this doesn't make it smarter.

How many positions does a human GM analyze in one second? One position? Ten positions? Set SF to search 10 nodes/second and see how well it plays. So, how does a fast hardware serve the advancement of computer chess? Cause it certainly doesn't make the engines smarter, it just hides the fact that they are still very dumb. Plenty of room for improvement here, imho.

[chrisw]

Queen sac, looks entirely speculative, but worked ...

[pgn][Event "?"]
[Site "?"]
[Date "2023.02.26"]
[Round "48"]
[White "Stockfish_13"]
[Black "Chess-System-Tal-1.59"]
[Result "0-1"]
[ECO "C16"]
[Opening "French"]
[Variation "Winawer, Petrosian Variation"]
[TimeControl "20+0.05"]
[Termination "adjudication"]
[PlyCount "135"]
[GameDuration "00:00:43"]
[GameEndTime "2023-02-26T08:57:50.470 W. Europe Standard Time"]
[GameStartTime "2023-02-26T08:57:06.599 W. Europe Standard Time"]

1. e4 { book } 1... e6 { book } 2. d4 { book } 2... d5 { book } 3. Nc3 {
book } 3... Bb4 { book } 4. e5 { book } 4... Qd7 { book } 5. a3 { book }
5... Bf8 { book } 6. Nh3 { book } 6... b6 { book } 7. Nf4 { book } 7... Ne7
{ book } 8. Bb5 { book } 8... c6 { book } 9. Ba4 { +1.23/19 0.57s } 9... b5
{ -1.20/16 0.79s } 10. Bb3 { +1.30/21 0.55s } 10... c5 { -1.78/15 0.76s }
11. Nce2 { +1.01/19 0.54s } 11... cxd4 { -1.50/16 0.61s } 12. Nxd4 {
+1.04/19 0.47s } 12... Nbc6 { -1.59/16 0.77s } 13. Nxb5 { +1.14/19 0.91s }
13... Nf5 { -1.34/17 0.58s } 14. g4 { +1.32/17 0.17s } 14... Nh4 { -1.50/16
0.54s } 15. Ba4 { +1.31/17 0.27s } 15... Be7 { -1.67/16 0.80s } 16. Nd4 {
+1.20/20 0.47s } 16... Bb7 { -2.21/16 0.45s } 17. O-O { +1.29/19 0.35s }
17... O-O { -1.06/16 0.94s } 18. Nd3 { +1.19/21 1.3s } 18... Nxd4 { 0.00/15
0.57s } 19. Bxd7 { +1.65/18 0.46s } 19... Ndf3+ { -0.20/13 0.33s } 20. Kh1
{ +1.77/19 0.28s } 20... d4 { +0.59/14 0.66s } 21. Bb5 { +2.11/20 0.69s }
21... f5 { +1.08/13 0.55s } 22. g5 { +2.78/19 1.5s } 22... Nxe5+ { +0.59/12
0.88s } 23. f3 { +2.75/16 0.19s } 23... Nexf3 { 0.00/13 0.31s } 24. Ba6 {
+2.84/19 0.64s } 24... Be4 { -0.41/15 0.70s } 25. Rf2 { +2.95/17 0.18s }
25... Rad8 { +0.98/13 0.34s } 26. g6 { +1.60/21 3.6s } 26... e5 { +3.45/13
0.52s } 27. Re2 { +1.41/20 1.6s } 27... Ba8 { +1.86/12 0.30s } 28. Nf4 {
+0.26/17 0.28s } 28... Rf6 { +6.41/13 0.33s } 29. Bc4+ { -0.97/17 0.44s }
29... Kh8 { +6.98/14 0.40s } 30. Bf7 { -2.17/18 0.93s } 30... hxg6 {
+7.96/14 0.42s } 31. Bd5 { -3.02/20 0.85s } 31... Rxd5 { +8.89/15 0.30s }
32. Nxd5 { -2.71/17 0.27s } 32... Bxd5 { +9.58/15 0.24s } 33. c4 { -3.16/16
0.23s } 33... Bc6 { +8.54/14 0.27s } 34. b4 { -2.70/13 0.092s } 34... Kh7 {
+8.65/14 0.43s } 35. Raa2 { -5.77/19 1.7s } 35... d3 { +9.80/16 0.55s } 36.
Qxd3 { -5.25/17 0.17s } 36... Ne1+ { +10.67/14 0.22s } 37. Qd5 { -3.78/16
0.046s } 37... Bxd5+ { +11.15/15 0.20s } 38. cxd5 { -5.16/19 0.21s } 38...
Nd3 { +11.40/17 0.30s } 39. Be3 { -5.45/22 1.1s } 39... Rd6 { +11.39/16
0.31s } 40. Bc5 { -5.55/17 0.041s } 40... Rd7 { +13.52/16 0.28s } 41. Rad2
{ -6.83/19 0.42s } 41... Nxc5 { +15.71/16 0.23s } 42. d6 { -6.22/14 0.012s
} 42... Ne4 { +15.13/15 0.21s } 43. dxe7 { -6.62/15 0.060s } 43... Rxe7 {
+15.99/16 0.30s } 44. Rxe4 { -6.55/14 0.040s } 44... fxe4 { +18.18/15 0.21s
} 45. Re2 { -6.77/14 0.041s } 45... Rf7 { +19.21/17 0.24s } 46. Kg1 {
-6.50/15 0.050s } 46... Rf4 { +18.54/17 0.20s } 47. b5 { -7.99/16 0.16s }
47... Nf5 { +20.39/17 0.35s } 48. a4 { -8.08/15 0.024s } 48... e3 {
+19.94/17 0.20s } 49. a5 { -6.76/11 0.015s } 49... Rb4 { +21.48/17 0.26s }
50. b6 { -7.02/13 0.029s } 50... axb6 { +21.75/17 0.17s } 51. axb6 {
-7.36/13 0.043s } 51... Rxb6 { +22.29/15 0.13s } 52. Kg2 { -7.66/13 0.053s
} 52... Rb1 { +23.45/16 0.12s } 53. Kh3 { -9.54/15 0.14s } 53... g5 {
+24.59/16 0.20s } 54. Rg2 { -7.85/14 0.055s } 54... Kg6 { +26.32/16 0.12s }
55. Rg1 { -9.94/13 0.044s } 55... Rb4 { +28.65/16 0.23s } 56. Kg2 {
-9.72/13 0.015s } 56... g4 { +28.62/16 0.16s } 57. Kh1 { -9.53/13 0.017s }
57... Kg5 { +31.16/16 0.27s } 58. h3 { -16.84/16 0.12s } 58... e2 {
+32.54/16 0.18s } 59. Rc1 { -54.25/18 0.065s } 59... gxh3 { +40.21/15 0.17s
} 60. Kg1 { -M14/21 0.054s } 60... Kf4 { +40.66/15 0.15s } 61. Kf2 {
-24.17/13 0.023s } 61... Re4 { +49.17/15 0.16s } 62. Re1 { -77.01/19 0.061s
} 62... g5 { +55.50/15 0.081s } 63. Rxe2 { -M18/23 0.063s } 63... Rxe2+ {
+55.59/17 0.16s } 64. Kxe2 { -M16/21 0.048s } 64... g4 { +56.92/18 0.25s }
65. Kf1 { -77.92/18 0.024s } 65... g3 { +62.54/18 0.24s } 66. Ke1 { -M14/24
0.048s } 66... h2 { +M13/17 0.086s } 67. Kd1 { -M12/21 0.017s } 67... h1=Q+
{ +M11/22 0.087s } 68. Kc2 { -M10/21 0.015s, Black wins by adjudication }
0-1
[/pgn]

[Uri Blass]

I wouldn't have even read the topic if the word impressive hadn't been mentioned. So I was curious and installed the engine. But I couldn't find anything that I would call impressive.

A rating of 3400+ is pretty impressive.

These programs are history, and by being revisited over and over again (countless new Rebel variations) will not serve the advancement of computer chess.

You speak like every program(mer) has a duty to serve the advancement of computer chess (and in the way you see it fit). This is a bit weird.

Also, playing bullet games with fast time controls is interesting. Yes, on modern hardware SF searches probably millions of positions per second and reaches some 40+ depths. But this doesn't make it smarter.

How many positions does a human GM analyze in one second? One position? Ten positions? Set SF to search 10 nodes/second and see how well it plays. So, how does a fast hardware serve the advancement of computer chess? Cause it certainly doesn't make the engines smarter, it just hides the fact that they are still very dumb. Plenty of room for improvement here, imho.

SF is not designed for 10 nodes per second.
Some changes in SF are productive with many nodes per second but counter productive at 10 nodes per second so I am even not sure if stockfish improved in the last years with 10 nodes per second.

SF is basically optimized for bullet time control with fast hardware that is the nearly the same as 120/40 for relatively old hardware.
I strongly believe that SF is the leading engine even if you use for testing hardware of 2010 or the oldest hardware that it can run on it and not hardware of today.

[matejst]

These programs are history, and by being revisited over and over again (countless new Rebel variations) will not serve the advancement of computer chess.

Quite the opposite. Such programs are precisely the ones that push computer chess forward. SF is mostly a question of optimization, a place where all things are put together and optimized, while [experimental] engines bring most of the critical new ideas: Giraffe, TexelGI, Winter, Seer, etc. mostly because the authors are not burdened by the Elo chase.

[Uri Blass]

These programs are history, and by being revisited over and over again (countless new Rebel variations) will not serve the advancement of computer chess.

Quite the opposite. Such programs are precisely the ones that push computer chess forward. SF is mostly a question of optimization, a place where all things are put together and optimized, while [experimental] engines bring most of the critical new ideas: Giraffe, TexelGI, Winter, Seer, etc. mostly because the authors are not burdened by the Elo chase.

It seems to me that all these engines do not try to beat stockfish but only to earn elo.
I do not see one case when a new engine beat stockfish in part of the games in the CCRL list in a fair way.

It can be nice if somebody can produce an engine that can beat stockfish in the CCRL list only in 5% of the games even if the engine is going to lose 80% of the game but it seems that no programmer work for this direction.

Here is the data about the 4 games that Stockfish15.1 4 cores lost in CCRL and I see no game when stockfish lost in a fair way that is not winning by book or by a big bug of stockfish that is not about the move choice when it get a reasonable time.

Seer could beat stockfish with black only because of luck when stockfish got only depth 1 at move 40.
Same for Koivisto9.0.
Uralochka could beat stockfish only because of some strange bug and it seems that stockfish lost on time in a winning position.
Koivisto8 got a winning position out of book so it could win.


[pgn][Event "CCRL 40/15"]
[Site "CCRL"]
[Date "2022.12.08"]
[Round "856.4.593"]
[White "Stockfish 15.1 64-bit 4CPU"]
[Black "Seer 2.6.0 64-bit 4CPU"]
[Result "0-1"]
[ECO "D91"]
[Opening "Gruenfeld"]
[Variation "5.Bg5"]
[PlyCount "133"]
[WhiteElo "3531"]
[BlackElo "3449"]

1. d4 {+0.00/1 0s} Nf6 {+0.00/1 0s} 2. c4 {+0.00/1 0s} g6 {+0.00/1 0s} 3. Nc3
{+0.00/1 0s} d5 {+0.00/1 0s} 4. Nf3 {+0.00/1 0s} Bg7 {+0.00/1 0s} 5. Bg5
{+0.00/1 0s} Ne4 {+0.00/1 0s} 6. Bf4 {+0.00/1 0s} Nxc3 {+0.00/1 0s} 7. bxc3
{+0.00/1 0s} dxc4 {+0.00/1 0s} 8. e3 {+0.00/1 0s} b5 {+0.00/1 0s} 9. a4
{+0.43/38 37s} c6 {(c6) -0.68/24 8s} 10. Qb1 {(Qb1) +0.46/35 11s} Qa5 {(Ba6)
-0.37/28 18s} 11. Kd2 {(Qb2) +0.69/36 12s} Nd7 {(Nd7) -0.34/27 9s} 12. axb5
{(axb5) +0.40/43 36s} Qxb5 {(Qxb5) -0.77/30 9s} 13. Qa2 {(Qa2) +0.47/42 12s}
Nb6 {(Nb6) -0.81/31 20s} 14. Be2 {(Be2) +0.47/43 18s} Bf5 {(Bf5) -0.75/32 12s}
15. Rab1 {(Rab1) +0.50/42 12s} Bxb1 {(Bxb1) -0.48/34 20s} 16. Rxb1 {(Rxb1)
+0.36/40 28s} Qa4 {(Qa4) -0.56/31 15s} 17. Qxa4 {(Qxa4) +0.32/40 13s} Nxa4
{(Nxa4) -0.32/29 7s} 18. Bxc4 {(Bxc4) +0.37/44 13s} Nb6 {(Nb6) -0.38/30 11s}
19. Ba6 {(Ba6) +0.35/43 17s} O-O {(O-O) -0.73/30 8s} 20. c4 {(c4) +0.29/40 16s}
g5 {(g5) -0.89/30 28s} 21. Bc7 {(Bc7) +0.26/40 15s} g4 {(Rae8) -0.55/31 9s} 22.
Ne5 {(Ne5) +0.52/35 16s} Bxe5 {(Bxe5) -0.67/31 9s} 23. Bxe5 {(Bxe5) +0.45/40
27s} Rad8 {(Rad8) -0.46/32 12s} 24. Bg3 {(Bg3) +0.39/41 41s} f5 {(f5) -0.46/33
12s} 25. Kc3 {(Be5) +0.38/40 21s} Rf7 {(Rf7) -0.23/27 12s} 26. Bc7 {(h3)
+0.24/40 26s} Rd7 {(Rd7) -0.53/28 13s} 27. Bf4 {(Be5) +0.19/45 80s} Rd8 {(Rd8)
-0.20/30 24s} 28. Bc7 {(Be5) +0.16/44 60s} Rd7 {(Rd7) +0.00/54 60s} 29. Bf4
{+0.19/36 7s} Rd8 {(Rd8) +0.00/52 58s} 30. h4 {+0.11/39 11s} e6 {(Re8) -0.18/27
11s} 31. h5 {(Be5) +0.22/33 10s} Kg7 {(Kg7) +0.00/28 10s} 32. Be5+ {(Ra1)
+0.09/37 42s} Kh6 {(Kh6) +0.00/37 25s} 33. Bf4+ {(Bf4) +0.06/38 6s} Kg7 {(Kg7)
+0.00/53 54s} 34. f3 {+0.09/38 15s} Re8 {(Kf6) -0.43/27 16s} 35. Kd3 {(Bd6)
+0.09/36 23s} Rd8 {(Rd8) +0.00/30 16s} 36. Be5+ {(Kd2) +0.06/37 12s} Kh6 {(Kh6)
+0.00/36 10s} 37. Bf4+ {(Bf4) +0.11/34 1s} Kg7 {(Kg7) +0.00/54 58s} 38. Kc2
{+0.04/35 6s} Rg8 {(Kf6) +0.00/32 18s} 39. fxg4 {(Ra1) +0.25/24 1s} fxg4
{(fxg4) +0.00/36 10s} 40. c5 {(Kd3) +0.10/1 0s} Nd5 {(Nd5) +1.49/31 24s} 41.
Be5+ {(Be5) -1.08/42 83s} Kh6 {(Kh6) +1.67/29 10s} 42. Kd3 {(Kd3) -1.17/39 18s}
Kxh5 {(Kxh5) +1.58/29 6s} 43. Bb7 {(Bb7) -1.17/37 20s} Ne7 {(Ne7) +1.14/29 6s}
44. e4 {(Bd6) -1.14/36 20s} Kg5 {(Kg5) +1.43/28 7s} 45. Bd6 {(Bd6) -1.24/40
14s} h5 {(Rd8) +0.73/31 36s} 46. Ba6 {(Bxe7) -2.09/39 106s} Re8 {(Re8) +2.49/26
6s} 47. Rb7 {(Rb7) -2.13/33 9s} Kg6 {(Kg6) +2.57/28 11s} 48. Bg3 {(Bg3)
-2.19/33 16s} Kg7 {(Kg7) +2.77/28 9s} 49. Rb1 {(Rb2) -2.07/39 49s} Kh6 {(Kh6)
+2.78/27 7s} 50. Rb7 {(Rb7) -2.32/37 53s} Rf1 {(Rh7) +3.41/29 8s} 51. Ke2
{(Ke2) -2.46/34 48s} Ra1 {(Ra1) +3.87/30 7s} 52. Bf4+ {(Bf4) -3.04/28 18s} Kg6
{(Kg6) +3.48/29 7s} 53. Bc4 {(Bc4) -2.91/28 8s} Nd5 {(Nd5) +4.09/31 18s} 54.
Be5 {(Be5) -3.32/35 57s} Nc3+ {(Nc3) +4.06/27 8s} 55. Ke3 {(Ke3) -3.41/29 11s}
Ra4 {(Ra3) +4.23/28 7s} 56. Rd7 {(Rc7) -3.25/27 22s} Nd1+ {(Ra3) +4.96/25 7s}
57. Ke2 {(Ke2) -4.59/27 10s} Rxc4 {(Rxc4) +5.63/27 9s} 58. Kxd1 {(Kxd1)
-5.00/29 29s} a5 {(Ra4) +6.03/27 8s} 59. Rc7 {(Ra7) -3.89/24 7s} a4 {(g3)
+7.10/27 24s} 60. Kd2 {(Kd2) -4.11/30 16s} a3 {(g3) +7.56/27 9s} 61. Rg7+
{(Ra7) -4.31/24 7s} Kh6 {(Kh6) +8.05/26 13s} 62. Ra7 {(Ra7) -4.49/26 4s} Rb4
{(Rb4) +8.28/26 12s} 63. Kc3 {(Kd3) -4.66/24 4s} Rb2 {(Rb1) +8.62/26 10s} 64.
Rxa3 {(g3) -5.21/25 8s} Rxg2 {(Rxg2) +9.09/25 9s} 65. Ra6 {(Ra6) -5.45/24 5s}
g3 {(g3) +9.72/26 14s} 66. Ra7 {(d5) -5.78/21 3s} h4 {(h4) +12.21/26 9s} 67.
Rg7 {(Ra1) -6.31/20 1s} 0-1

[/pgn]

[pgn][Event "CCRL 40/15"]
[Site "CCRL"]
[Date "2022.12.16"]
[Round "852.1.830"]
[White "Uralochka 3.38c 64-bit 4CPU"]
[Black "Stockfish 15.1 64-bit 4CPU"]
[Result "1-0"]
[BlackElo "3531"]
[ECO "A01"]
[Opening "Nimzowitsch-Larsen Attack"]
[Variation "Modern Variation, 1...e5 2.Bb2 Nc6 3.e3"]
[WhiteElo "3415"]
[TimeControl "20+6"]
[Termination "normal"]
[PlyCount "71"]
[WhiteType "human"]
[BlackType "human"]

1. b3 {0.00/1 0s} e5 {0.00/1 0s} 2. Bb2 {0.00/1 0s} Nc6 {0.00/1 0s} 3. e3
{0.00/1 0s} g6 {0.00/1 0s} 4. Bb5 {0.00/1 0s} Nge7 {0.00/1 0s} 5. d4
{0.00/1 0s} exd4 {0.00/1 0s} 6. Bxd4 {0.00/1 0s} Nxd4 {0.00/1 0s} 7. Qxd4
{0.00/1 0s} Rg8 {0.00/1 0s} 8. Qd2 {0.00/1 0s} c6 {0.00/1 0s} 9. Bd3
{-0.47/26 22s} Bg7 {(Bg7) +0.79/39 62s} 10. c3 {(c3) -0.67/27 15s} Qc7
{(d5) +0.77/35 11s} 11. Ne2 {(Qc2) -0.59/25 27s} d5 {(d5) +0.83/33 10s} 12.
a4 {(Qc2) -0.65/27 22s} h5 {(Bd7) +0.93/31 11s} 13. a5 {(b4) -0.57/25 17s}
a6 {(h4) +1.10/36 32s} 14. b4 {(b4) -0.73/25 14s} Bf5 {(Be5) +1.13/40 36s}
15. Qc2 {(h3) -0.78/28 29s} Bxd3 {+1.19/31 (O-O-O) 8s} 16. Qxd3 {(Qxd3)
-1.01/27 15s} h4 {(h4) +1.11/35 17s} 17. Nd2 {(h3) -0.91/27 15s} h3
{+1.21/34 (O-O-O) 11s} 18. g3 {(g3) -0.91/27 16s} O-O-O {+1.18/36 (O-O-O)
13s} 19. Nb3 {-1.25/27 (O-O) 29s} Nf5 {(Kb8) +1.18/35 23s} 20. Ned4 {(Ned4)
-1.30/27 22s} Nd6 {(Nd6) +1.27/37 15s} 21. Nc5 {-1.22/27 (O-O) 18s} Kb8
{(Kb8) +1.19/38 14s} 22. O-O {-1.32/27 (O-O-O) 20s} Rge8 {(Rge8) +1.34/34
18s} 23. Rfe1 {(Rfd1) -1.41/26 13s} Re7 {(Re7) +1.37/31 14s} 24. Rac1
{(Rad1) -1.52/25 15s} Qc8 {(Qc8) +1.37/31 13s} 25. Red1 {(Re2) -1.50/26
13s} Rde8 {(Rde8) +1.50/33 31s} 26. Qf1 {(Qe2) -1.60/26 31s} Ka7 {(Bxd4)
+1.63/31 17s} 27. Ndb3 {(Qd3) -1.65/27 16s} g5 {(Qg4) +1.77/33 26s} 28. Re1
{(Re1) -2.05/26 24s} Qg4 {(Nc4) +1.88/37 16s} 29. Qe2 {(Qe2) -2.17/25 19s}
Qf5 {(Qf5) +1.90/37 15s} 30. Nd2 {(Nd4) -2.03/25 19s} Nb5 {(Qg6) +2.15/34
23s} 31. Na4 {(Na4) -2.17/29 29s} Qg6 {(g4) +2.39/34 21s} 32. Qf1 {(Qf1)
-2.28/27 16s} f5 {(f5) +2.45/33 18s} 33. Qd3 {(Qd3) -2.31/26 28s} Qf6
{(Nd6) +2.62/32 20s} 34. Nf3 {(Nf3) -2.59/28 13s} f4 {(f4) +2.84/33 18s}
35. exf4 {(exf4) -3.16/30 27s} gxf4 {(gxf4) +2.96/35 26s} 36. Rf1 {(Rxe7)
-3.57/28 17s} 1-0
[/pgn]

[pgn][Event "CCRL 40/15"]
[Site "CCRL"]
[Date "2022.12.10"]
[Round "852.4.825"]
[White "Stockfish 15.1 64-bit 4CPU"]
[Black "Koivisto 8.0 64-bit 4CPU"]
[Result "0-1"]
[BlackElo "3466"]
[ECO "A02"]
[Opening "Bird Opening"]
[WhiteElo "3531"]
[TimeControl "20+6"]
[Termination "normal"]
[PlyCount "247"]
[WhiteType "human"]
[BlackType "human"]

1. f4 {0.00/1 0s} b6 {0.00/1 0s} 2. f5 {0.00/1 0s} Bb7 {0.00/1 0s} 3. g4
{0.00/1 0s} e6 {0.00/1 0s} 4. Nf3 {-2.25/38 24s} exf5 {(exf5) +3.56/30 35s}
5. gxf5 {(gxf5) -2.24/33 10s} Bxf3 {(Bxf3) +3.52/32 20s} 6. exf3 {(exf3)
-2.25/35 17s} Qh4+ {(Qh4) +3.30/29 27s} 7. Ke2 {-2.38/27 0s} Nc6 {(Nc6)
+3.27/31 17s} 8. c3 {(c3) -2.30/36 11s} O-O-O {+3.18/30 (O-O-O) 16s} 9. d4
{(d4) -2.27/41 56s} Nge7 {(Re8) +3.20/30 39s} 10. Qe1 {(Qe1) -1.84/28 8s}
Qh5 {(Qh5) +3.33/31 16s} 11. Qg3 {(f6) -1.74/34 49s} Nxf5 {(Nxf5) +3.28/28
7s} 12. Qg4 {(Qg4) -1.98/38 23s} Qg6 {(Qg6) +3.17/30 9s} 13. Kf2 {(Kf2)
-2.08/39 22s} Be7 {(Be7) +3.20/30 7s} 14. Bd3 {(h4) -2.08/38 15s} Bh4+
{(Bh4) +3.44/28 10s} 15. Kg1 {(Kg1) -2.08/40 21s} Nce7 {(Nce7) +3.36/26 8s}
16. Na3 {(Na3) -1.96/38 14s} a5 {(Rde8) +2.85/30 38s} 17. Nc2 {(Kg2)
-1.87/32 11s} Nh6 {(Nh6) +2.88/31 12s} 18. Qxg6 {(Ba6) -1.81/35 16s} hxg6
{(hxg6) +2.99/29 6s} 19. Ba6+ {(Ba6) -1.79/33 14s} Kb8 {(Kb8) +2.99/1 0s}
20. Bc4 {-1.79/34 13s} d5 {(d5) +3.00/29 19s} 21. Bd3 {(Bd3) -1.78/37 29s}
Nhf5 {(Nhf5) +2.89/29 13s} 22. Kg2 {(Kg2) -1.84/34 9s} Rh5 {(Kb7) +2.94/28
15s} 23. Bf4 {(a4) -1.95/39 54s} Bg5 {(Rdh8) +2.93/32 27s} 24. Bg3
{-2.01/36 20s} Rdh8 {(Rdh8) +3.06/29 16s} 25. Rad1 {(Rae1) -1.99/34 26s}
Bh4 {(Bh4) +3.02/30 27s} 26. Bf4 {-2.08/34 6s} Kc8 {(Bg5) +3.08/30 14s} 27.
Bc1 {(Ne3) -2.16/37 40s} Bg5 {(Kd7) +3.36/30 27s} 28. f4 {(f4) -2.02/34
10s} Bf6 {(Bf6) +3.24/29 11s} 29. Be2 {(Be2) -2.03/36 17s} R5h7 {(R5h7)
+3.18/30 49s} 30. a4 {(Ne3) -2.02/38 16s} Nh4+ {(c6) +3.34/31 23s} 31. Kf1
{(Kf2) -1.96/42 27s} c6 {(Nhf5) +3.24/31 32s} 32. Ne3 {(Ne1) -1.92/40 6s}
Nef5 {(Nhf5) +3.12/29 9s} 33. Nxf5 {(Ng4) -1.93/39 25s} Nxf5 {(Nxf5)
+3.17/26 13s} 34. Kg2 {(Kg2) -1.91/43 3s} Nh4+ {(Kc7) +3.19/29 12s} 35. Kg3
{-1.91/42 4s} Be7 {(Kd8) +3.29/26 4s} 36. h3 {(Bg4) -1.90/38 8s} Kc7 {(Kc7)
+3.17/30 20s} 37. Bd3 {(b3) -1.88/34 4s} Nf5+ {(Nf5) +3.27/29 5s} 38. Kg2
{(Kg2) -1.89/38 3s} Bh4 {(Bh4) +3.12/32 9s} 39. Kf3 {(c4) -1.89/39 5s} Rh5
{(Kc8) +3.13/30 16s} 40. Kg2 {-1.89/42 3s} Re8 {(R5h7) +3.03/28 8s} 41. Kf3
{-1.95/38 24s} Kd7 {(Kd7) +3.12/30 9s} 42. Rdg1 {(Bd2) -1.96/36 15s} Nd6
{(Reh8) +3.03/32 7s} 43. Be3 {(Be3) -1.92/36 24s} Bf6 {(Reh8) +3.03/31 6s}
44. Rb1 {(b3) -1.99/37 27s} Reh8 {(Bh4) +2.93/30 27s} 45. Kg2 {(Kg2)
-2.03/42 23s} Bh4 {(Bh4) +2.93/32 8s} 46. Rbd1 {(Kf3) -2.06/40 27s} Nf5
{(Re8) +3.05/32 24s} 47. Bc1 {-1.96/40 19s} Re8 {(Re8) +3.12/33 26s} 48.
Kf3 {(Kf3) -2.00/36 18s} Ng3 {(Nd6) +2.98/34 29s} 49. Rh2 {(Rh2) -2.01/45
19s} Reh8 {(Reh8) +2.94/30 8s} 50. Rg1 {(b3) -2.04/41 19s} Nf5 {(Nf5)
+2.94/29 15s} 51. Rhh1 {(Rgh1) -2.03/43 16s} Ke6 {(Rb8) +2.98/34 36s} 52.
Be2 {(Bd2) -2.07/44 56s} Kd6 {(Kd7) +2.98/34 37s} 53. Kg2 {(Kg2) -2.10/41
25s} R5h7 {(R5h7) +2.98/35 7s} 54. Bd3 {(Bd3) -2.02/42 30s} Kd7 {(Kd7)
+2.98/34 7s} 55. Kf3 {(Kf3) -2.00/38 9s} Rh5 {(Nd6) +2.98/38 54s} 56. Bd2
{(Bd2) -2.00/39 16s} Nd6 {(Re8) +2.98/37 10s} 57. Be3 {(Be3) -2.03/40 15s}
Ke6 {(Rb8) +2.98/34 13s} 58. Be2 {(Rb1) -2.06/44 47s} Be7 {(Re8) +3.00/32
24s} 59. Kg2 {(Kg2) -1.86/32 10s} Rh4 {(Rh4) +3.00/26 5s} 60. Rf1 {(Rf1)
-1.93/32 13s} Kd7 {(Kd7) +2.95/31 30s} 61. Bd3 {(Bd3) -1.91/35 9s} R4h5
{(R4h5) +2.98/31 5s} 62. Be2 {(Be2) -1.98/39 26s} R5h7 {(R5h7) +2.81/29
15s} 63. Bd3 {(Bg4) -2.02/39 8s} Nf5 {(Nf5) +2.82/32 21s} 64. Bd2 {(Bf2)
-1.98/42 19s} Bh4 {(Bh4) +3.00/31 26s} 65. Rhg1 {(Bxf5) -1.96/39 26s} Re8
{(Re8) +3.00/32 40s} 66. Kh2 {(Rf3) -2.03/37 15s} Bd8 {(Kc7) +3.07/30 17s}
67. Rf2 {(Rf3) -2.02/37 16s} Bc7 {(Nd6) +2.98/28 20s} 68. Rf3 {(Rf3)
-1.95/35 20s} Bd6 {(Rh5) +3.22/30 9s} 69. Re1 {(Be1) -1.88/34 11s} Reh8
{(Reh8) +2.96/32 30s} 70. Bc1 {(Rg1) -1.88/31 5s} Nh4 {(Kc7) +2.96/34 7s}
71. Rf2 {(Rg3) -1.93/35 7s} Be7 {(Nf5) +2.96/32 6s} 72. Rh1 {(Bd2) -1.84/29
5s} Nf5 {(Nf5) +2.96/33 7s} 73. Kg2 {(Rf3) -1.88/35 6s} Bh4 {(Bh4) +2.96/30
23s} 74. Rc2 {(Rf3) -1.85/32 4s} Bf6 {(Re8) +2.96/33 18s} 75. Re2 {(Rf2)
-1.79/30 3s} Bd8 {(Bh4) +2.96/31 11s} 76. Rc2 {(b3) -1.79/31 3s} Rh4 {(Rh4)
+2.96/25 1s} 77. Rf2 {(Rf2) -1.78/27 2s} Bc7 {(Nd6) +2.96/26 3s} 78. Bd2
{(Bd2) -1.71/25 2s} Re8 {(Re8) +2.96/28 4s} 79. Rf3 {(Rf3) -1.75/27 2s} Rh5
{(Rh5) +2.96/23 1s} 80. Rff1 {(Rf2) -1.78/24 1s} Kd8 {(Nd6) +2.89/23 1s}
81. Re1 {(b3) -1.67/33 14s} Reh8 {(Reh8) +2.69/30 10s} 82. Ref1 {(Ref1)
-1.65/37 24s} R5h7 {(R5h7) +2.59/30 19s} 83. Bc1 {(Bb1) -1.72/41 61s} Kd7
{(Rh6) +2.58/31 32s} 84. Rf2 {(Bd2) -1.72/43 63s} f6 {(f6) +2.44/30 20s}
85. Bd2 {-1.66/37 12s} Rh6 {(Rh6) +2.62/32 27s} 86. Rff1 {(b4) -1.64/42
17s} Nd6 {(Ke8) +2.47/30 33s} 87. Rf3 {(f5) -1.67/45 29s} f5 {(Nf5)
+2.50/28 15s} 88. Rc1 {(Rc1) -1.61/37 40s} Ne4 {(Ne4) +2.52/29 21s} 89. Be3
{(Be3) -1.67/38 20s} Re8 {(Re8) +2.30/32 24s} 90. b3 {(b3) -1.62/42 69s}
Bd6 {(Bd6) +2.24/34 27s} 91. c4 {(c4) -1.61/37 11s} Nf6 {(Nf6) +2.24/29 6s}
92. Rcf1 {(Rc2) -1.63/42 70s} Re7 {(Re6) +2.24/34 29s} 93. Bc1 {(Bc1)
-1.40/33 7s} Bb4 {(Re8) +2.14/35 14s} 94. Re3 {(Re3) -1.56/45 32s} Rf7
{(Rf7) +2.14/36 10s} 95. Re2 {(Re5) -1.59/39 21s} Rf8 {(Rh4) +2.14/38 8s}
96. Rf3 {(Rc2) -1.53/46 17s} Rc8 {(Bd6) +2.14/37 5s} 97. Rc2 {(Rc2)
-1.39/36 7s} Bd6 {(Bd6) +2.13/35 6s} 98. Rg3 {(Kf1) -1.40/37 15s} Ne4
{(Rch8) +2.13/33 5s} 99. Rf3 {(Rf3) -1.52/39 14s} Rhh8 {(Nf6) +2.12/33 5s}
100. Be3 {(Rf1) -1.58/39 13s} Bb4 {(Be7) +2.04/32 15s} 101. Bc1 {(Bc1)
-1.54/40 33s} Be7 {(Nf6) +2.08/32 30s} 102. Bb2 {(Re3) -1.50/41 6s} Nf6
{(Bb4) +2.05/31 24s} 103. Rg3 {-1.55/39 5s} Rh6 {(Rh6) +2.05/31 19s} 104.
Bc1 {(Kf1) -1.58/37 5s} Rd8 {(Bb4) +2.13/30 11s} 105. Bf1 {(Re2) -1.49/36
11s} Bb4 {(Bd6) +2.08/31 15s} 106. Bd3 {(Rf3) -1.54/33 2s} Rdh8 {(Be7)
+2.00/32 11s} 107. Rf3 {(Re2) -1.49/36 4s} Rh4 {(Rc8) +2.00/37 41s} 108.
Rg3 {(Rg3) -1.54/42 13s} R8h6 {(R4h6) +2.13/30 7s} 109. Rf3 {(Rf3) -1.54/38
2s} Bd6 {(Bd6) +2.13/30 5s} 110. Be3 {(Re2) -1.54/35 1s} R6h5 {(R6h5)
+2.25/30 6s} 111. Bd2 {(Bc1) -1.51/32 1s} Rh8 {(Rh8) +2.23/33 9s} 112. Bc1
{(Bc1) -1.54/33 1s} dxc4 {(R4h7) +2.35/30 5s} 113. bxc4 {(Bxc4) -1.31/22
0s} Nh5 {(Nh5) +2.54/26 7s} 114. Rcf2 {(Rcf2) -1.34/24 1s} Rd8 {(Rd8)
+2.38/30 20s} 115. Kf1 {(Be3) -1.30/21 0s} Ke7 {(Ke7) +2.00/31 35s} 116.
Bd2 {(Be3) -1.39/17 0s} Rd7 {(Bc7) +2.17/29 31s} 117. Be3 {(c5) -0.83/1 0s}
Kf6 {(c5) +1.99/29 11s} 118. c5 {-0.68/3 0s} bxc5 {+3.41/27 4s} 119. dxc5
{(Ba6) -0.44/2 0s} Bxf4 {+5.74/31 4s} 120. Bxf4 {(Bxf4) -0.60/2 0s} Nxf4
{(Rxf4) +5.71/31 3s} 121. Be2 {(Rxf4) -6.91/37 178s} Rd4 {(g5) +8.25/27 7s}
122. Ke1 {(Rb3) -6.41/32 52s} Rxa4 {(Nxh3) +8.66/27 6s} 123. Bf1 {(Bd1)
-6.29/27 15s} Ra1+ {(Ra1) +9.31/28 5s} 124. Kd2 {-6.35/18 0s} 0-1
[/pgn]

[pgn][Event "CCRL 40/15"]
[Site "CCRL"]
[Date "2023.02.01"]
[Round "863.3.132"]
[White "Stockfish 15.1 64-bit 4CPU"]
[Black "Koivisto 9.0 64-bit 4CPU"]
[Result "0-1"]
[BlackElo "3474"]
[ECO "B34"]
[Opening "Sicilian"]
[Variation "Accelerated Fianchetto, Modern, 6.Nde2"]
[WhiteElo "3531"]
[TimeControl "20+6"]
[Termination "normal"]
[PlyCount "88"]
[WhiteType "human"]
[BlackType "human"]

1. e4 {0.00/1 0s} c5 {0.00/1 0s} 2. Nf3 {0.00/1 0s} Nc6 {0.00/1 0s} 3. Nc3
{0.00/1 0s} g6 {0.00/1 0s} 4. d4 {0.00/1 0s} cxd4 {0.00/1 0s} 5. Nxd4
{0.00/1 0s} Bg7 {0.00/1 0s} 6. Nde2 {0.00/1 0s} d6 {0.00/1 0s} 7. h3
{0.00/1 0s} Nf6 {0.00/1 0s} 8. g4 {0.00/1 0s} Rb8 {0.00/1 0s} 9. a4
{-0.19/39 34s} a6 {(a6) +0.70/28 10s} 10. Be3 {(Bg2) -0.16/36 10s} h5
{+0.67/32 (O-O) 39s} 11. g5 {(g5) -0.09/33 12s} Nd7 {(Nh7) +0.48/31 24s}
12. f4 {(Bg2) 0.00/38 12s} O-O {(b5) +0.09/29 41s} 13. f5 {(f5) +0.03/30
12s} Nde5 {(Nb6) +0.42/29 25s} 14. Nf4 {(Nf4) +0.29/29 15s} Nb4 {(b5)
+0.10/29 12s} 15. Qe2 {(Bg2) +0.26/33 18s} Nc4 {(Nc4) +0.02/30 87s} 16. Bc1
{(Bc1) +0.20/35 16s} Qa5 {(d5) -0.46/28 18s} 17. Bg2 {(Bg2) +0.21/36 19s}
Qc5 {(Qc5) -0.51/30 18s} 18. Ncd5 {(Ncd5) +0.12/41 25s} Nxd5 {(Bxb2)
-0.24/31 11s} 19. Nxd5 {(Nxd5) +0.59/32 16s} Re8 {(Re8) -0.46/30 15s} 20.
c3 {(Ra2) +0.50/39 72s} Bd7 {(b5) -0.30/32 21s} 21. b4 {(b4) +0.55/33 12s}
Qc8 {(Qc6) -0.63/34 21s} 22. O-O {+0.47/34 (O-O) 21s} b5 {(b5) -0.59/30 5s}
23. a5 {(a5) +0.54/34 18s} Bc6 {(Bc6) -0.36/31 23s} 24. Nf4 {(Nf4) +0.85/32
17s} Bxc3 {(Bxc3) -0.41/29 7s} 25. Ra2 {(Rb1) +0.70/33 23s} Rf8 {(Rf8)
0.00/29 9s} 26. Nxh5 {(Rc2) +0.80/32 21s} Bxb4 {(Bxb4) -0.03/27 21s} 27.
Qg4 {(Rc2) +0.81/33 20s} Bc5+ {(Bc5) -0.05/28 60s} 28. Kh1 {(Kh1) +0.86/35
21s} Ne3 {(Ne3) -1.30/26 33s} 29. Bxe3 {(Bxe3) +0.87/35 18s} Bxe3 {(Bxe3)
-0.41/29 13s} 30. Qf3 {(Ra3) +0.59/38 47s} Bd4 {(Bxg5) -0.88/28 34s} 31.
Qd1 {(Qd1) +0.69/33 16s} Be5 {(Be5) -0.38/28 8s} 32. Raf2 {(Raf2) +0.73/38
14s} Kh7 {(gxf5) -0.77/30 31s} 33. h4 {(fxg6) +0.82/36 59s} Rg8 {(Rg8)
-0.17/26 7s} 34. Nf4 {(Nf4) +0.76/35 10s} Bd7 {(Bd7) -1.26/27 15s} 35. Nd5
{(Nd5) +1.06/36 18s} Qe8 {(Qe8) -0.89/28 3s} 36. Bh3 {(Bh3) +1.04/39 32s}
Rg7 {(Rg7) -1.02/29 4s} 37. fxg6+ {(fxg6) +0.55/35 14s} fxg6 {(fxg6)
-0.91/30 4s} 38. Bxd7 {(Rf8) +0.45/33 4s} Qxd7 {(Qxd7) -0.05/29 3s} 39. Qf3
{(Qf3) +0.91/24 0s} Rgg8 {(Rgg8) -1.54/30 12s} 40. Rc1 {(Qg2) +0.48/1 0s}
Rbf8 {(Rgf8) +12.06/24 4s} 41. Nf6+ {(Rc7) -7.58/32 152s} exf6 {(exf6)
+13.29/23 5s} 42. Rg2 {(Kg1) -10.16/28 119s} fxg5 {(fxg5) +14.41/26 6s} 43.
Qg4 {(Qd3) -12.08/27 44s} Qxg4 {(Qxg4) +15.73/29 6s} 44. Rxg4 {(Rxg4)
-28.00/32 30s} Kh6 {(Rc8) +16.76/28 7s} 0-1
[/pgn]