mmt Vs. Ovyron (G4 D5 BG2)

[Uri Blass]

57/60+ 1:28:39 19,556,306k 3,676k +4.00 1. ... Rxd4

Is this on your old machine, or did you get a new one finally?

If 1:28:39 means 1 1/2 hrs, and if it's your old machine, that's not too long to wait (though a whole game of SF v. SF at that pace would be quite long).

Yes

It is on my old machine.

I decided at this point not to buy a newer machine.
failing high on Rxd4 happened after less than 30 minutes.

54/67+ 27:52 5,664,631k 3,387k +2.76 1. ... Rxd4

[Ovyron]

depth 54 is enough with slow hardware and 1024 mbytes hash

Thank you.

So that's my current lowerbound (if 1.g4 is lost then depth 54 would suffice to always beat depth 54 and any lower depth, depth 53 could still fail to win all games against depth 53 by missing such a move in a similar position where that's the only winning move - even though Rxb7 also wins, my Stockfish was falling into some fortress positions and needed guidance to avoid them, after Rxd4 no more fortresses are possible and Stockfish from any depth beats Stockfish from any depth.)

An interesting challenge would be someone trying to defend 1.g4 against Uri as black playing Stockfish at depth 54's moves, because if this conjecture is right, then what is next is the possibility that Stockfish Depth 54 is also strong enough to win against any defense, by any entity, guided or not (and to me, that'd prove 1.g4 loses by force).

1. g4 d5 2. Bg2 Bxg4 3. c4 c6 4. Qb3 e6 5. Qxb7 Nd7 6. Nc3 Ne7 7. cxd5 exd5 8. d4 Rb8 9. Qa6 Rb6 10. Qd3 Ng6 11. h3 Be6 12. Nf3 Bd6 13. h4 h5 14. b3 Nf6 15. Bg5 O-O 16. e3 Re8 17. Kf1 Bg4 18. Ne1 Bb4

[d]3qr1k1/p4pp1/1rp2nn1/3p2Bp/1b1P2bP/1PNQP3/P4PB1/R3NK1R w - -

[Ovyron]

Fixed version:
1. g4 d5 2. Bg2 Bxg4 3. c4 c6 4. Qb3 e6 5. Qxb7 Nd7 6. Nc3 Ne7 7. cxd5 exd5 8. d4 Rb8 9. Qa6 Rb6 10. Qd3 Ng6 11. h3 Be6 12. Nf3 Bd6 13. h4 h5 14. b3 Nf6 15. Bg5 O-O 16. e3 Re8 17. Kf1 Bg4 18. Ne1

And a side note: LC0 wouldn't consider Ne1 if I didn't push it to consider it. It took 10s of millions of nodes for it to realize that it's a significantly better move than the alternatives.

Komodo disagrees!

At depth 46 it had:

18. Nh2 (-1.10)
18. Ne1 (-1.15)
18. Rc1 (-1.24)

I also was expecting 18. Nh2, but after it Leela can't hold her evals to > -1.40. Things will get interesting soon, because in some variations Leela has to be abandoned (the best white defense I have around here has some -1.70 Leela scores.)

[zullil]

1. g4 d5 2. Bg2 Bxg4 3. c4 c6 4. Qb3 e6 5. Qxb7 Nd7 6. Nc3 Ne7 7. cxd5 exd5 8. d4 Rb8 9. Qa6 Rb6 10. Qd3 Ng6 11. h3 Be6 12. Nf3 Bd6 13. h4 h5 14. b3 Nf6 15. Bg5 O-O 16. e3 Re8 17. Kf1 Bg4 18. Ne1 Bb4

[d]3qr1k1/p4pp1/1rp2nn1/3p2Bp/1b1P2bP/1PNQP3/P4PB1/R3NK1R w - -

Komodo at depth 45 had

18...Qe7 (-1.12)
18...Bb4 (-1.11)
18...Ba3 (-1.10)

[Zenmastur]

At the least, it'd be good to see SF self-play results at several different TCs to see if there might be any difference in the results.

Prediction: The higher the depth, the higher the black wins.

This is not about time controls or hardware, but about the depth Stockfish reaches (you can emulate faster hardware with more time, and slower time control with faster hardware.)

Can someone check what depth does Stockfish need to find Rxd4 in this position?

[d]3r2k1/1Br2ppp/1p6/p5P1/2bNP3/n1P1BP2/7P/R5K1 b - -

Maybe that's enough depth to beat Stockfish at the same depth (and any lower depth) from 1.g4 if it is lost

Here is three runs I did. The first is with 32GB TT and 6 man with the comp running many other apps in the back ground, the second is 64GB and 5 man TB with less running in the back ground, and the last is 96GB but only 24 threads.

Code: Select all

 1 [-2.36]  1.... Nb5 2.Nxb5  (0.00)
 3 [-2.72]  1.... Nb5 2.Nxb5 Rxb7  (0.00)
 4 [-2.38]  1.... Nb5 2.Nxb5 Rxb7 3.Na3  (0.00)
 5 [-1.93]  1.... Rxb7 2.Rxa3 Rc7 3.Ra1 Rdd7 4.Rb1  (0.00)
 6 [-1.99]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Rbd7 4.Rb1  (0.00)
 7 [-2.13]  1.... Rxb7 2.Rxa3 Bd3 3.Kf2 Rc7  (0.00)
 8 [-2.00]  1.... Rxb7 2.Rxa3 Bd3 3.Kf2 g6 4.h3 Rc7 5.Bf4 Rcc8  (0.00)
 9 [-2.01]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Rc8 4.Bd2 Bd3  (0.01)
10 [-2.33]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Ra8 4.Nf5 Be6 5.Nd4  (0.01)
11 [-2.25]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Ra8 4.Nf5 Be6 5.Nd6 Rc7 6.Nb5 Rc6 7.Rc1 Rac8 8.Na7  (0.01)
12 [-2.19]  1.... Nb1 2.Rxb1 Rxb7 3.Kf2 b5 4.Ra1 Ra8 5.h4 g6 6.Nc2 Rd7 7.Bd4 Be6 8.Rh1 Rc7 9.h5  (0.03)
13 [-2.31]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Ra8 4.Kf2 g6 5.h4 a4 6.Bc1 Rc7 7.Ke3 Be6 8.Kd3 Rac8 9.Bd2 Ra7 10.Kc2 a3  (0.04)
14 [-2.20]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Ra8 4.Kf2 g6 5.Bc1 b5 6.h4 h6 7.gxh6 Kh7 8.Ra3 Rba7 9.Bg5 Ra6 10.Ke3 a4  (0.06)
15 [-2.23]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Ra8 4.Kf2 g6 5.h4 b5 6.Bc1 h6 7.f4 Rd7 8.Ke3 Kg7 9.f5 gxf5 10.exf5 b4  (0.07)
16 [-2.25]  1.... Rxb7 2.Rxa3 g6 3.Kf2 Ra8 4.Bc1 b5 5.h4 Rd7 6.Ke3 Kg7 7.Ra1 h6 8.Ba3 Re8 9.Bb2 a4 10.Ba3  (0.12)
17 [-2.21]  1.... Rxb7 2.Rxa3 g6 3.Kf2 Ra8 4.Bc1 a4 5.Ra1 Rc7 6.Ke3 h6 7.h4 Be6 8.Kd3 Rac8 9.Bb2 Bd7 10.f4 Kg7  (0.14)
18 [-2.25]  1.... Rxb7 2.Rxa3 Ra8 3.Nf5 b5 4.Bd4 Rd7 5.e5 a4 6.Nd6 g6 7.Kf2 h5 8.f4 h4 9.Ke3 Kf8 10.Kd2 Ra6 11.Kc2  (0.25)
19 [-2.32]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 a4 4.Bc1 h6 5.h4 Rc7 6.Ba3 Kh7 7.Kf2 Be6 8.Bb4 Kg6 9.Ke2 Rcc8 10.Kd3 Bc4+ 11.Kc2 Bb3+ 12.Kd2  (0.34)
20 [-2.23]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 a4 4.Bc1 h6 5.h4 Be6 6.Ba3 Bd7 7.Kf2 Rc7 8.Bb4 Kh7 9.Ke2 Kg6 10.Kd3 Kh5 11.f4 Bg4 12.Bd6 Rd7 13.e5  (0.42)
21 [-2.21]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Kf2 a4 5.Bc1 h6 6.h4 Be6 7.Bb2 Kh7 8.f4 g6 9.Ke2 Bc8 10.Kd3 Bb7 11.Ba3 Rac8 12.Bb4 hxg5 13.hxg5  (0.55)
22 [-2.32]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.h4 Be6 6.Ra3 Rac8 7.Bd2 Bd7 8.Kf2 h6 9.Ra1 hxg5 10.hxg5 a4 11.Ke2 g6 12.f4 b5 13.Ke3 Kf8  (0.71)
23 [-2.30]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.h4 Be6 6.Ne2 h5 7.Be3 Rb5 8.Nd4 Rb2 9.Bc1 Ra2 10.Rxa2 Bxa2 11.Kf2 Kh7 12.Ke3 Bc4 13.Ba3 f6 14.gxf6 gxf6 15.Bd6 Rc8 16.Kf2 Kg6  (0.86)
24 [-2.33]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.h4 Be6 6.Ra3 Rac8 7.Bd2 Bd7 8.Ra1 a4 9.Kf2 b5 10.Ne2 h6 11.Be3 R5c6 12.Bc1 f5 13.exf5 Ra6 14.Ba3 hxg5 15.hxg5 Bxf5  (1.03)
25 [-2.29]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.h4 Be6 6.Ra3 Rac8 7.Bd2 h6 8.Kf2 Kh7 9.Ra1 Ra8 10.Ra3 Bd7 11.Be3 Rac8 12.Ne2 Rb5 13.Nf4 a4 14.Nd5 Rb3 15.Ra1 a3 16.gxh6 Rb2+ 17.Kg3  (1.26)
26 [-2.24]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.h4 Be6 6.Ra3 Rac8 7.Bd2 Bd7 8.Kf2 f6 9.Ra1 a4 10.gxf6 gxf6 11.Ne2 b5 12.Be3 R5c7 13.Rd1 Be8 14.Bc1 b4 15.cxb4 Rc2 16.Ke3 Bb5 17.Bd2 Bxe2 18.Kxe2  (1.91)
27 [-2.43]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.h4 a4 5.Bc1 Be6 6.Ra3 h6 7.Kf2 Rc5 8.Be3 Bb3 9.Bd2 Bc4 10.Be3 g6 11.Nc2 Rcc8 12.Bd4 b5 13.Ke3 hxg5 14.hxg5  (2.28)
28 [-2.37]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.h4 a4 5.Bc1 Be6 6.Ra3 b5 7.Bf4 b4 8.cxb4 Rc4 9.Be5 Bd7 10.Ne2 Rxb4 11.Kf2 Rc8 12.Ra2 Rb5 13.Bd6 Rb1 14.Nf4 Rcc1 15.Be5 h6 16.gxh6  (2.92)
29 [-2.47]  1.... Rxb7  (3.74)
29 [-2.49]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 h6 5.gxh6 g6 6.Bf4 Rd7 7.Be3 Kh7 8.h4 a4 9.Bf4 Ra6 10.Bd2 b5 11.Be3 Ra8 12.Kg3 Rb7 13.Bg5 Ra6 14.Be3 Rc7 15.Kg4 Ra8 16.Bf4 Rc5 17.Bd6 Rh5 18.Be7 Ra6  (3.99)
30 [-2.38]  1.... Rxb7 2.Rxa3  (4.80)
30 [-2.49]  1.... Rxb7  (5.31)
30 [-2.47]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Ra1 Be6 12.Bb4 Ra7 13.Ke3 Kxh6 14.Kd2 Kg7 15.Bd6 Rd7 16.Bb4 Bb3 17.Ke3 f6 18.Nxb3 axb3 19.Rb1  (5.33)
31 [-2.43]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Ra1 Be6 12.Ke2 Kxh6 13.Ba3 Kg7 14.Rb1 Ra6 15.h5 gxh5 16.Rh1 Raa8 17.Kd3 Kg6 18.Kc2 Rh8 19.Rg1+ Kh6 20.Bc1+ Kh7  (6.07)
32 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.Ra1 Be6 7.Ra3 Kh7 8.Bf4 Rd7 9.Bc1 Rdd8 10.Ra1 Rdc8 11.Ne2 Bc4 12.Nd4 Rc5 13.Be3 Rca5 14.Ra3 b5 15.gxh6 g6 16.Kg3 R5a7 17.Nc6 Rc7 18.Nd4 Rcc8 19.Bg5  (6.91)
33 [-2.39]  1.... Rxb7 2.Rxa3  (7.78)
33 [-2.49]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.Kf2 Be6 6.Ra3 Rac8 7.Bd2 Bd7 8.h4 a4 9.Ne2 b5 10.Bf4 R5c6 11.Ra1 f6 12.Kg3 Ra6 13.Ra3 Kf7 14.Kf2 Rac6 15.Ra1 Be6 16.Bd2 Ke7 17.gxf6+ Kxf6 18.Nd4 Rc5 19.Bf4 Kf7 20.Bd6 Rxc3 21.Nxb5  (8.49)
34 [-2.51]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 h6 4.h4 Kh7 5.Kf2 Rc7 6.Ra1 Be6 7.Ra3 a4 8.Bf4 Rd7 9.Bc1 Rdd8 10.Bf4 Ra6 11.Bc1 Rc8 12.Ke3 Raa8 13.Kf2 Bc4 14.gxh6 g6 15.Bg5 b5 16.Kg3 Rc7 17.Bf4 Rb7 18.Be3 Rc8 19.Bf4 Rd7 20.Be3 Bd3  (12.50)
36 [-2.51]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 h6 4.h4 Kh7 5.Kf2 Rc7 6.Ra1 Be6 7.Ra3 a4 8.Bf4 Rd7 9.Bc1 Rdd8 10.Bf4 Ra6 11.Bc1 Rc8 12.Ke3 Raa8 13.Kf2 Bc4 14.gxh6 g6 15.Bg5 Rc7 16.Bf4 Rd7 17.Kg3 b5 18.Be3 Re8 19.Kf2 Rc7 20.Bc1 Ra8 21.Bf4 Rd7  (13.64)
37 [-2.51]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 h6 4.h4 Kh7 5.Kf2 Rc7 6.Ra1 Be6 7.Ra3 a4 8.Bf4 Rd7 9.Bc1 Rdd8 10.Bf4 Ra6 11.Bc1 Rc8 12.Ke3 Raa8 13.Kf2 Bc4 14.gxh6 g6 15.Bg5 Rc7 16.Bf4 Rd7 17.Be3 Rb7 18.Bc1 Rba7 19.Nc6 Rc7 20.Nd4 Rc5  (13.79)
38 [-2.51]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 h6 4.h4 Kh7 5.Kf2 Rc7 6.Ra1 Be6 7.Ra3 a4 8.Bf4 Rd7 9.Bc1 Rdd8 10.Bf4 Ra6 11.Bc1 Rc8 12.Ke3 Raa8 13.Kf2 Bc4 14.gxh6 g6 15.Bg5 Rc7 16.Bf4 Rd7 17.Kg3 b5 18.Be3 Ra6 19.Kf2 Rc7 20.Bc1 Rc5 21.Kg3 f6 22.Bf4  (15.00)
39 [-2.51]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 h6 4.h4 Kh7 5.Kf2 Rc7 6.Ra1 Be6 7.Ra3 a4 8.Bf4 Rd7 9.Bc1 Rdd8 10.Bf4 Ra6 11.Bc1 Rc8 12.Ke3 Raa8 13.Kf2 Bc4 14.gxh6 g6 15.Bg5 Rc7 16.Bf4 Rca7 17.Nc6 Rb7 18.Nd4 b5 19.Kg3 Rba7 20.Nc6 Rd7 21.Ne5 Rd1 22.Ng4 Ra6 23.Be3  (16.37)
40 [-2.61]  1.... Rxb7  (26.28)
40 [-2.61]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 h6 4.h4 Kh7 5.Kf2 Rc7 6.Ra1 Be6 7.Ra3 a4 8.Bf4 Rd7 9.gxh6 gxh6 10.Bc1 Rdd8 11.Ra1 Rdc8 12.Ra3 Rc5 13.Bf4 Bb3 14.Bd2 Bc4 15.Bf4 Rh5 16.Bg3 b5 17.Nf5 Bb3 18.Bd6 Be6 19.Nd4 Bd7 20.Bg3 Rg8 21.Ne2 Rc8 22.e5 Rc4 23.f4 f6 24.exf6  (31.32)
41 [-2.61]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 h6 4.h4 Kh7 5.Kf2 Rc7 6.Ra1 Be6 7.Ra3 a4 8.Bf4 Rd7 9.Bc1 Rdd8 10.Bf4 Ra6 11.Bc1 Rc8 12.Ke3 Raa8 13.Kf4 Bc4 14.Ra1 Bb3 15.Bd2 Be6 16.Ra3 Bc4 17.Bc1 b5 18.Ra1 Be6 19.Ne2 Rd8 20.gxh6 gxh6 21.Ba3 Rd3 22.Nd4 Rxc3 23.Nxb5 Rd3  (34.85)
42 [-2.51]  1.... Rxb7 2.Rxa3  (36.99)
42 [-2.61]  1.... Rxb7  (39.56)
42 [-2.77]  1.... Rxd4  (57.28)
42 [-3.20]  1.... Rxd4 2.Bxd4 Nc2 3.Rc1 Rxb7 4.Rxc2 a4 5.Rd2 h6 6.gxh6 a3 7.hxg7 a2 8.Rd1 Ra7 9.Ra1 Ra5 10.Bxb6 Rb5 11.Rxa2 Bxa2 12.Bd4 Rh5 13.Bf6 Rc5 14.Bd4 Rc6 15.Kg2 Rg6+ 16.Kf2 Rh6 17.Be5 Rh5 18.Bf4 Kxg7 19.Bd6 Rh3 20.Kg2 Rh6 21.Be5+ f6 22.Bd4 Rh5 23.Kg3 Be6 24.Kg2 Bc4 25.Kg3 Kf7  (65.34)
43 [-3.31]  1.... Rxd4  (72.05)
43 [-3.42]  1.... Rxd4  (79.03)






 1 [-2.36]  1.... Nb5 2.Nxb5  (0.00)
 3 [-2.05]  1.... f6 2.Rxa3 Rxb7 3.gxf6  (0.00)
 4 [-2.11]  1.... Rxb7 2.Rxa3 Re7 3.Kf2  (0.00)
 5 [-2.14]  1.... Rxb7 2.Rxa3 Rc7  (0.00)
 6 [-2.15]  1.... Rxb7 2.Rxa3 Rc7 3.h4 Rdc8 4.h5  (0.00)
 7 [-2.07]  1.... Rxb7 2.Rxa3 Rc7 3.Kf2 Bd3 4.Bf4 Rcc8  (0.00)
 8 [-2.23]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Rc8 4.Kg2 Bd3  (0.00)
 9 [-2.31]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Ra8 4.h4 a4 5.h5 a3  (0.01)
10 [-2.33]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Ra8 4.Nf5 Be6 5.Nd6 Rbb8 6.f4 a4  (0.01)
11 [-2.23]  1.... Rxb7 2.Rxa3 Ra8 3.h4 b5 4.h5 a4 5.Kf2 Ra6 6.h6 gxh6 7.gxh6 Kf8 8.Nf5 Ke8  (0.02)
12 [-2.25]  1.... Rxb7 2.Rxa3 Ra8 3.h4 g6 4.Kg2 a4 5.Kf2 h5 6.gxh6 b5 7.Kg1 Ra6 8.Kh1 Kh7  (0.02)
13 [-2.28]  1.... Rxb7 2.Rxa3 Ra8 3.h4 g6 4.Bc1 b5 5.Bf4 a4 6.Be5 h6 7.Kf2 Kh7 8.Ke3 h5 9.Kf2 b4 10.cxb4 Rxb4  (0.03)
14 [-2.29]  1.... Rxb7 2.Rxa3 Ra8 3.Kf2 g6 4.Bf4 a4 5.h4 b5 6.Bd6 Rd7 7.Bb4 Kg7 8.Ra1 f6  (0.04)
15 [-2.23]  1.... Rxb7 2.Rxa3 Ra8 3.Kf2 b5 4.h4 g6 5.Bf4 a4 6.Bd6 Rb6 7.Be7 h5 8.Bf6 Kh7 9.Kg3 Rbb8  (0.05)
16 [-2.22]  1.... Rxb7 2.Rxa3 g6 3.h4 Ra8 4.Kh2 b5 5.h5 gxh5 6.Kg3 a4 7.Kh4 Be6 8.Kxh5 Bd7 9.Bd2 Rc8 10.Ne2 Kf8  (0.07)
17 [-2.32]  1.... Rxb7 2.Rxa3 Ra8 3.h4 g6 4.Bf4 a4 5.Kf2 Rd7 6.Kg3 b5 7.Be5 h5 8.gxh6 Kh7 9.Bg7 Rb7  (0.10)
18 [-2.24]  1.... Rxb7 2.Rxa3 Ra8 3.h4 g6 4.Bc1 h5 5.Kf2 Rc7 6.Bf4 Rd7 7.Bc1 a4 8.Ra1 Be6 9.Ba3 Rc7 10.Bb4 Rcc8 11.Ra3 Kh7  (0.16)
19 [-2.25]  1.... Rxb7 2.Rxa3 Ra8 3.h4 g6 4.Ra1 a4 5.Bc1 Rc7 6.Kf2 Be6 7.Ra3 Bb3 8.Bb2 Bc4 9.Ke3 Be6 10.f4 Bd7 11.f5 h5 12.gxh6 Kh7  (0.22)
20 [-2.32]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 a4 4.Ra1 h6 5.h4 Be6 6.Ba3 Bd7 7.Kf2 Rc7 8.Bb4 Rca7 9.gxh6 g6 10.Ra3 Rc8 11.Ke3 Kh7 12.Kd3  (0.29)
21 [-2.32]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.h4 a4 5.Bc1 Be6 6.Ra3 h6 7.Bf4 Rd7 8.gxh6 g6 9.Kf2 Bc4 10.Be5 Kh7 11.Bg7 b5 12.Kg3 Rb7 13.Nc2 Rc7 14.Be5 Rc5 15.Bg7 Re8  (0.55)
22 [-2.27]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.h4 a4 5.Bc1 Be6 6.Ra3 h6 7.Bf4 Rb7 8.Bd6 Kh7 9.Kf2 Rd7 10.e5 Rda7 11.f4 g6 12.Ke3 h5 13.Ra1  (0.62)
23 [-2.29]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.h4 Be6 6.Ra3 Rac8 7.Bd2 h6 8.Kf2 Kh7 9.Ke2 Bc4+ 10.Kf2 Ra8 11.Be3 a4 12.Nf5 Rb5 13.gxh6 gxh6 14.Bd4 Rb1 15.Kg3  (0.75)
24 [-2.37]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.h4 a4 5.Bc1 Be6 6.Ra3 g6 7.Bf4 Rd7 8.Kf2 Bc4 9.Bc1 Rda7 10.Nc6 Rc7 11.Ne5 Be6 12.Bf4 Bb3 13.Be3 b5 14.Bd4 Be6  (1.19)
25 [-2.37]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.h4 a4 5.Bc1 Be6 6.Ra3 g6 7.Bf4 Rd7 8.Kf2 Bc4 9.Bc1 Rda7 10.Nc6 Rc7 11.Nd4 Rc5 12.Bf4 h6 13.gxh6 b5 14.Kg3 Rcc8 15.Be3 Kh7 16.Bf4 Rd8 17.Bg5  (1.25)
26 [-2.30]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.h4 a4 5.Bc1 Be6 6.Ra3 g6 7.Bf4 Rca7 8.Kf2 Bc4 9.Be5 b5 10.Ke3 h6 11.Kd2 Rc8 12.Kc2 Raa8 13.Ra1 a3 14.gxh6 Kh7 15.Bd6  (1.34)
27 [-2.36]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Ra1 Be6 6.Ra3 Rc5 7.Kf2 g6 8.Bf4 Bb3 9.Bd2 Bc4 10.Bf4 h6 11.gxh6 Kh7 12.Kg3 Rcc8 13.Kf2 b5 14.Kg3 Bd3 15.Bg5 Rc7 16.Bf4 Rc5 17.Bd6 Rh5  (1.80)
28 [-2.27]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 h6 4.h4 Kh7 5.Ra1 Rc7 6.Kf2 Be6 7.Ra3 a4 8.Bf4 Rd7 9.Bc1 hxg5 10.hxg5 Bc4 11.Ra1 b5 12.Ke3 Kg6 13.Kf4 Rh8 14.Ba3 Rh5 15.Rg1 Ra7 16.Nc6 Ra6 17.Ne5+ Kh7  (2.62)
29 [-2.37]  1.... Rxb7  (3.64)
29 [-2.34]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.Bf4 Rd7 7.gxh6 b5 8.Nc6 Rc8 9.Nd4 g6 10.Be5 Kh7 11.Bg7 Re8 12.Ra1 Rd6 13.Ke3 Ra6 14.Ra3 Rc8 15.f4 Rd8 16.e5 Rd5 17.Bf6 Rd7 18.Kf3 Kxh6 19.Ra1 Kh7  (3.91)
30 [-2.44]  1.... Rxb7  (4.39)
30 [-2.44]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.Ra1 Be6 7.Ra3 Rc5 8.Bf4 Bb3 9.Bd2 Bc4 10.Nf5 Be6 11.Nd6 Rc6 12.Nb5 Kh7 13.Nd4 Rcc8 14.Be3 Ra6 15.Bc1 Bd7 16.Be3 Kg6  (4.51)
31 [-2.33]  1.... Rxb7 2.Rxa3  (5.77)
31 [-2.44]  1.... Rxb7  (6.18)
31 [-2.49]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Be7 Kh7 10.Bg5 Rc5 11.Be7 Rcc8 12.Bg5 Rc7 13.Kg3 b5 14.Bf4 Rd7 15.Be3 Rda7 16.Bg5 Rc8 17.Be3 Ra6 18.Bd2  (6.54)
32 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.Ke3 Rc5 7.Kf2 Kh7 8.Bf4 Rca5 9.gxh6 g6 10.Kg3 R5a7 11.Be3 b5 12.Bg5 Ra6 13.Bf4 Re8 14.Bd2 Rc8 15.Bf4 Ra7 16.Be3 Ra5 17.Kf2 Raa8 18.Bf4  (8.02)
33 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.Kf2 Be6 6.Ra3 Rac8 7.Bd2 h6 8.h4 Kh7 9.Ke2 Bc4+ 10.Ke1 Ra8 11.Kf2 Rcc8 12.Ra1 Be6 13.Ra3 a4 14.Be3 Bb3 15.Bd2 Bc4 16.Bc1 Rc7 17.Ra1 Be6 18.Ra3 Rc5 19.Be3 Bc4  (8.29)
34 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.Ke3 Rca7 7.Nc6 Ra6 8.Nb4 Ra5 9.Kf2 b5 10.gxh6 g6 11.Be3 Rc8 12.Nc2 Kh7 13.Nd4 Rca8 14.Kg3 R5a6 15.Bg5 Rc8 16.Kf2 Ra7 17.Kg3 Rac7 18.Be3 Bd3 19.Bd2 Rc5  (8.94)
35 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.gxh6 g6 7.Ra1 Be6 8.Ra3 Rc5 9.Bg5 Bb3 10.Bd2 Bc4 11.Be3 Kh7 12.Bf4 b5 13.Kg3 Ra6 14.Be3 Rc7 15.Bf4 Rc8 16.Be3 Ra5 17.Bg5 Raa8 18.Bf4 Re8 19.Bg5 Ra6 20.Bd2 Rd8  (9.62)
36 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.gxh6 g6 7.Ra1 Be6 8.Ra3 Rc5 9.Bg5 Bb3 10.Bd2 Bc4 11.Be3 Kh7 12.Bf4 b5 13.Kg3 Ra6 14.Be3 Rc8 15.Kf2 Rc7 16.Bf4 Rb7 17.Kg3 Rd7 18.Be3 Ra8 19.Kf2 Rc8 20.Kg3 Bd3 21.Kf2 Rdc7 22.Bd2 Bc4 23.Bf4  (10.26)
37 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.gxh6 g6 7.Ra1 Be6 8.Ra3 Rc5 9.Bg5 Bb3 10.Bd2 Bc4 11.Be3 Kh7 12.Bf4 b5 13.Kg3 Ra6 14.Be3 Rc8 15.Kf2 Raa8 16.Kg3 Rd8 17.Kf2 Rac8 18.Bg5 Rd7 19.Ke3 Ra7 20.f4 Rb7 21.Ra1 Bb3 22.Kd2 Rd7 23.f5  (13.37)
38 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.h4 Be6 6.Ra3 Rac8 7.Bd2 Bd7 8.Ra1 a4 9.Ne2 Ra8 10.Bc1 Bb5 11.Nd4 Bd3 12.Bb2 h6 13.gxh6 g6 14.Kf2 Rh5 15.Kg3 Kh7 16.Bc1 Rc5 17.Ra3 Bc4 18.Bf4 Rcc8 19.Bg5 b5 20.Kg4 Ra7 21.Kg3 Ra6 22.Bf4 Raa8 23.Be3 Kg8  (15.17)
39 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.gxh6 g6 7.Ra1 Be6 8.Ra3 Rc5 9.Bg5 Bb3 10.Bd2 Bc4 11.Be3 Kh7 12.Bf4 b5 13.Be3 Rac8 14.Nc2 R5c7 15.Nd4 Bd3 16.Bd2 Ra7 17.Bg5 Rc5 18.Ke3 Bc4 19.Kf2 Rcc7 20.Be3 Ra5 21.Kg3 Rc8 22.Kf2 Ra6 23.Nc2 Rca8  (19.05)
40 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.gxh6 g6 7.Ra1 Be6 8.Ra3 Rc5 9.Bg5 Bb3 10.Bd2 Bc4 11.Be3 Kh7 12.Bf4 Rcc8 13.Bg5 Rc7 14.Kg3 b5 15.Be3 Rca7 16.Kg2 Ra6 17.Kg3 Rd8 18.Kf2 Raa8 19.Kg3 Rac8 20.Kf2 Rc7 21.Bf4 Rc5 22.Be3 Rdc8 23.Nc2 Rh5 24.Bg5 Bb3  (21.26)
41 [-2.39]  1.... Rxb7 2.Rxa3  (31.10)
41 [-2.50]  1.... Rxb7  (32.48)
41 [-2.48]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Bb4 Ra7 12.Ra1 Kxh6 13.Ke3 f6 14.Ba3 Rd7 15.Bb4 Ra8 16.Ba3 Rh8 17.Rb1 b5 18.Rd1 Kh7 19.Kf2 Kg8 20.Kg3 Rhh7 21.Re1 Rh5 22.f4 Rdh7 23.Nf3 Kf7 24.Bb4 Rh8 25.Rd1 Ra8  (32.53)
42 [-2.50]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Bb4 Ra7 12.Ra1 Kxh6 13.Ke3 f6 14.Ba3 Rd7 15.Bb4 Ra8 16.Ba3 Rh8 17.Rb1 b5 18.Rd1 Kh7 19.Kf2 Kg8 20.Kg3 Kf7 21.f4 Rh5 22.Re1 Rd8 23.e5 Rdh8 24.e6+ Ke8 25.f5 gxf5 26.Kf4 Rxh4+ 27.Kxf5 Rh3 28.Kxf6 R8h6+ 29.Kg5  (33.79)
43 [-2.61]  1.... Rxb7  (45.59)
43 [-2.72]  1.... Rxd4  (88.36)
43 [-3.64]  1.... Rxd4 2.Bxd4 Nc2 3.Bxb6 Rxb7 4.Rxa5 h5 5.Bf2 Rb1+ 6.Kg2 Ne1+ 7.Bxe1 Rxe1 8.Kg3 g6 9.Kf2 Rd1 10.Kg3 Be6 11.Rc5 Rc1 12.Rb5 Rxc3 13.Rb2 Kh7 14.Rf2 Rc5 15.Kf4 Kg7 16.Rb2 h4 17.Rg2 Kf8 18.Rf2 Rc4 19.Ke3 Rc3+ 20.Kf4 Kg7 21.Rb2 Kh7 22.Rf2 Rc5 23.Rg2 Rc1  (92.96)
44 [-3.64]  1.... Rxd4 2.Bxd4 Nc2 3.Bxb6 Rxb7 4.Rxa5 h5 5.Bf2 Rb1+ 6.Kg2 Ne1+ 7.Bxe1 Rxe1 8.Kg3 g6 9.Kf2 Rd1 10.Kg3 Be6 11.Rc5 Rc1 12.Rb5 Rxc3 13.Rb2 Kh7 14.Rf2 Rc5 15.Kf4 Kg7 16.Rb2 h4 17.Rg2 Kf8 18.Rf2 Rc4 19.Ke3 Rc3+ 20.Kf4 Kg7 21.Rb2 Kh7 22.Rf2 Rc5 23.Rg2 Rc1  (105.50)





 1 [-2.36]  1.... Nb5 2.Nxb5  (0.00)
 2 [-2.41]  1.... Rxb7 2.Rxa3 Rc7  (0.00)
 4 [-2.47]  1.... Rxb7 2.Rxa3 Rbd7  (0.00)
 5 [-2.15]  1.... Rxb7 2.Rxa3 Rbd7 3.Kg2 f6  (0.00)
 6 [-2.25]  1.... Rdd7 2.Rxa3 Rxb7 3.Kf2 Rbc7  (0.00)
 7 [-2.01]  1.... Rxb7 2.Rxa3 Rc8 3.h4 Bd3 4.Bf4  (0.00)
 8 [-2.16]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Rc8 4.Rd1 a4  (0.00)
 9 [-2.08]  1.... Rxb7 2.Rxa3 Be6 3.Kf2 Bd7 4.h4 Rc7 5.Bf4 Rc4  (0.01)
10 [-2.12]  1.... Nb5 2.Nxb5 Rxb7 3.Nd4 Be6 4.Ne2 Ra8 5.Bd4 a4  (0.01)
11 [-2.34]  1.... Rxb7 2.Rxa3 Ra8 3.Nf5 b5 4.Bd4 Rd7 5.Bxg7 Be6 6.Bd4 Bxf5 7.exf5 Rd5  (0.01)
12 [-2.16]  1.... Rxb7 2.Rxa3 Ra8 3.Kf2 a4 4.Nf5 Be6 5.Nd6 Rbb8 6.Nb5 Bc4 7.Nd4 b5 8.Nc6  (0.02)
13 [-2.21]  1.... Rxb7 2.Rxa3 g6 3.Nc6 Ra8 4.h4 a4 5.Kg2 h5 6.gxh6 Kh7 7.Kg3 b5 8.Nd4 Rc7 9.Kg2 Rd7  (0.03)
14 [-2.30]  1.... Rxb7 2.Rxa3 g6 3.Kf2 Ra8 4.Nc2 a4 5.h4 h5 6.gxh6 Kh7 7.Kg3 b5 8.Nd4 Rc7 9.Bf4  (0.04)
15 [-2.30]  1.... Rxb7 2.Rxa3 Ra8 3.Kg2 g6 4.h4 b5 5.Kh3 a4 6.Bf4 Ra6 7.Kg3 f6 8.Kf2 Kg7 9.Bg3 Rf7 10.e5 fxg5 11.hxg5  (0.05)
16 [-2.30]  1.... Rxb7 2.Rxa3 Ra8 3.h4 g6 4.Kh2 a4 5.Bf4 b5 6.Kh3 Rd7 7.Be5 h6 8.gxh6 Kh7 9.Bg7 Rd6  (0.07)
17 [-2.27]  1.... Rxb7 2.Rxa3 g6 3.Kf2 Ra8 4.Bc1 h5 5.gxh6 b5 6.Kg3 a4 7.h4 Kh7 8.Bf4 Rc8 9.Kg4 Be6+ 10.Kg3  (0.11)
18 [-2.21]  1.... Rxb7 2.Rxa3 Ra8 3.Kf2 g6 4.Bc1 h6 5.gxh6 b5 6.Bf4 a4 7.Kg3 Kh7 8.h4 f6 9.Kg4 Bd3 10.Be3 Rc7 11.h5 g5  (0.14)
19 [-2.15]  1.... Rxb7 2.Rxa3 Ra8 3.h4 g6 4.Bc1 a4 5.Ra1 Be6 6.Kf2 Rc7 7.Ra3 Bc4 8.Ra1 h6 9.Ke3 Rc5 10.f4 Be6 11.Kd3 Rac8 12.Bb2 b5 13.Ke2  (0.25)
20 [-2.17]  1.... Rxb7 2.Rxa3 Ra8 3.h4 g6 4.Ra1 h5 5.Kf2 Kh7 6.Bf4 Rd7 7.Bc1 Be6 8.Ke3 Rc7 9.Bb2 Bd7 10.Kd2 Rd8 11.Rb1 Ba4 12.Ke3 b5 13.Ba1 Rc4 14.Nxb5 Bxb5 15.Rxb5  (0.33)
21 [-2.26]  1.... Rxb7 2.Rxa3 Ra8 3.h4 Rd7 4.Kf2 b5 5.Bc1 a4 6.Ke3 Rda7 7.h5 Ra6 8.Kf2 g6 9.h6 f6 10.gxf6 Rxf6 11.e5 Rb6 12.Ke3 Kf7 13.Ke4 Rb7 14.Bg5  (0.52)
22 [-2.41]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 a4 4.Bc1 Rc7 5.h4 h6 6.gxh6 g6 7.Kf2 Be6 8.Ra3 Kh7 9.Be3 Bc4 10.Kg3 b5 11.h5 gxh5 12.Kh4 Rb7 13.Kxh5 Rb6 14.Nf5 Rg6 15.Bf4 Rg1  (0.68)
23 [-2.28]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Nf5 Be6 5.Bxb6 Rxc3 6.Rxa5 Rxa5 7.Bxa5 Ra3 8.Bb4 Rxf3 9.Ng3 Rf4 10.Bc3 Rg4 11.Bd2 Rh4 12.Bc3 h6 13.gxh6 Rxh6 14.Bd2 Rh4 15.Be3  (1.13)
24 [-2.30]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.h4 a4 5.Bc1 Be6 6.Ra3 Rc5 7.Be3 Bb3 8.Bd2 Bc4 9.Bf4 h6 10.gxh6 g6 11.Kf2 Kh7 12.Kg3 b5 13.Be3 Ra6 14.Nc2 Rh5  (1.28)
25 [-2.35]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 h6 4.h4 Rc7 5.Ra1 Be6 6.Ra3 a4 7.Kf2 Bc4 8.Ke3 Rc5 9.Kf2 Kh7 10.Be3 b5 11.Nf5 Rc7 12.Bd4 Rg8 13.Nd6 hxg5  (1.74)
26 [-2.38]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 h6 4.h4 Rc7 5.Ra1 Bd3 6.Ra3 a4 7.Kf2 Bc4 8.Ke3 Rc5 9.Kf2 Kh7 10.Be3 g6 11.Nc2 Rc7 12.Bd4 b5 13.Be5 Rd7 14.Nd4 Rb7 15.Bd6 Rc8 16.Ra1  (1.96)
27 [-2.43]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.Kf2 a4 6.h4 a3 7.Ke1 h6 8.Kd2 Rca5 9.gxh6 g6 10.Be3 Kh7 11.Kc1 b5 12.Nc2 Bd3 13.Nd4 f6 14.Bf4 Re8 15.Be3 Bc4  (2.70)
28 [-2.46]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rd7 4.Kf2 b5 5.Bc1 h6 6.gxh6 g6 7.Ba3 Kh7 8.h4 Rdd8 9.Rd1 Rac8 10.Ke3 Be6 11.Bb2 Kxh6 12.Ra1 a4 13.Rc1 Bd7 14.Kd3 f6 15.Ba3 Rh8 16.c4 bxc4+ 17.Rxc4 Rxc4 18.Kxc4 Kg7 19.Kc3 Rxh4 20.Be7  (4.18)
29 [-2.36]  1.... Rxb7 2.Rxa3  (4.98)
29 [-2.46]  1.... Rxb7  (5.16)
29 [-2.38]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rd7 4.Bc1 b5 5.Ba3 h6 6.gxh6 g6 7.Kf2 Kh7 8.h4 Ra6 9.Rd1 f6 10.Ke3 Ra8 11.Rg1 Kxh6 12.Ra1 Kh5 13.Bb4 Rda7 14.Bc5 Ra6 15.Kf2 Kh6 16.h5 Rc8 17.Ba3 b4 18.Bc1+ Kxh5  (5.21)
30 [-2.48]  1.... Rxb7  (5.38)
30 [-2.43]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rd7 4.Bc1 b5 5.Kf2 h6 6.gxh6 g6 7.h4 Kh7 8.Ba3 Ra6 9.Rd1 f6 10.Ke3 Ra8 11.Ra1 Re8 12.Bb2 a4 13.Rg1 Rd5 14.Ba3 Rh5 15.Rg4 Kxh6 16.Kd2 Be6 17.Rf4 Kg7 18.Kc2 Bc4 19.Bb4 Ra8 20.Be7 Kf7 21.Bxf6  (5.40)
31 [-2.43]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rd7 4.Bc1 b5 5.Kf2 h6 6.gxh6 g6 7.Ba3 Kh7 8.h4 f6 9.Rd1 Rb7 10.Ke3 Rc8 11.Rb1 Rd7 12.Rg1 Ra8 13.f4 Rc8 14.Rg4 Bf7 15.Nxb5 Kxh6 16.Rg2 Kh5 17.Rd2 Rxd2  (6.43)
32 [-2.53]  1.... Rxb7  (9.00)
32 [-2.55]  1.... Rxb7 2.Rxa3 Ra8 3.Ra1 Rc7 4.Bf4 Rc5 5.Ra3 b5 6.Kf2 a4 7.h4 Ra6 8.Nf5 Bb3 9.Bd2 h6 10.gxh6 g6 11.Nd4 Bc4 12.Be3 Rc7 13.Bf4 Rd7 14.Be3 Ra8 15.Kg2 Kh7 16.Kf2 Re8 17.Bg5 Rc8 18.Be3 Ra8 19.Kg3 Rc7 20.Kf2 Ra6  (10.25)
33 [-2.45]  1.... Rxb7 2.Rxa3  (14.65)
33 [-2.55]  1.... Rxb7  (14.96)
33 [-2.55]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.Ra1 Be6 6.Ra3 Bb3 7.Bd2 Bc4 8.Bf4 Rd7 9.Bc1 Rda7 10.Be3 Rb7 11.h4 b5 12.Ke1 Ra6 13.Kd2 f6 14.Kc2 fxg5 15.hxg5 h5 16.gxh6 Rg6 17.Nf5 Rg2+ 18.Kc1 gxh6 19.Nd6 Rd7 20.Nxc4 Rd3 21.Bxh6 bxc4  (15.06)
34 [-2.45]  1.... Rxb7 2.Rxa3  (15.56)
34 [-2.55]  1.... Rxb7  (15.86)
34 [-2.34]  1.... Rxb7 2.Rxa3  (16.95)
34 [-2.32]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Ra1 Be6 12.Ke2 Kxh6 13.Bb4 Ra7 14.Ke3 Rca8 15.Ba3 Kg7 16.Rb1 Ra6 17.Kd3 Rh8 18.Rh1 Bb3 19.Rb1 Rxh4 20.Nxb3 axb3 21.Be7  (25.13)
35 [-2.35]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Ra1 Be6 12.Ke2 Bd7 13.Kd2 Kxh6 14.Rb1 a3 15.Kc2 Rca8 16.Ra1 R5a7 17.Bf4+ Kg7 18.Be5+ Kh7 19.Bf6 Be6 20.Be5 Bc4  (25.24)
36 [-2.42]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Ra1 Be6 12.Ke2 Kxh6 13.Bb4 Ra6 14.Kd2 Kg7 15.e5 Kh6 16.Be7 Bd7 17.Kc2 Ra5 18.Bd6 Kg7 19.Kb2 Rh8 20.Rh1 Rha8 21.Ka3 Kh7  (25.38)
37 [-2.45]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Ra1 Be6 12.Bb4 Ra6 13.Ke1 Kxh6 14.Kd2 Kg7 15.e5 Kh6 16.Be7 Ra5 17.Bb4 Rxe5 18.Rxa4 Bc4 19.Ra1 Rce8 20.Bd6 Rd5 21.Bf4+ Kh5 22.Kc2 Ra5 23.Rxa5+ bxa5 24.Bg5  (25.73)
38 [-2.34]  1.... Rxb7 2.Rxa3  (26.67)
38 [-2.45]  1.... Rxb7  (27.21)
38 [-2.55]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Bf4 Raa8 12.Kg3 Rc5 13.Bg5 Rc7 14.Kf2 b5 15.Be3 Rb7 16.Kg3 Rc8 17.Kf2 Be6 18.Bg5 Ra8 19.f4 Bc4 20.Ke3 Rd7  (28.38)
39 [-2.55]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.h4 a4 5.Kf2 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Bf4 Raa8 12.Kg3 b5 13.Be3 Rd8 14.Kf2 Rd7 15.Kg3 Kg8 16.Kf2 Rc8 17.Kg3 Re8 18.Kf2 Kh7 19.Ra1 Ra8 20.Ra3 Ra6 21.Kg3 Rda7 22.Kg4 Ra8 23.Kg3 Re8 24.Bg5  (31.92)
40 [-2.55]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Bf4 b5 12.Be3 Ra6 13.Kg3 Rd8 14.Kf2 Re8 15.Bd2 Raa8 16.Be3 Re7 17.Kg3 Rb7 18.Bf4 Rc8 19.Kg4 Rd7 20.Be3 Ra8 21.Kg3 Ra6 22.Kf2 Rc7 23.Kg3 Kg8 24.Bf4  (33.05)
41 [-2.55]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Bf4 b5 12.Be3 Ra6 13.Kg3 Rd8 14.Kf2 Re8 15.Bd2 Raa8 16.Be3 Re7 17.Kg3 Rc7 18.Kf2 Rac8 19.Kg3 Bd3 20.Bd2 Rc5 21.Kf2 Bc4 22.Be3 Bb3 23.Bd2 Be6  (35.89)
42 [-2.55]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Bf4 b5 12.Be3 Ra6 13.Kg3 Rd8 14.Kf2 Raa8 15.Kg3 Re8 16.Kf2 Re7 17.Bg5 Rd7 18.Be3 Rc7 19.Bf4 Rcc8 20.Be3 Ra5 21.Kg3 Ra6 22.Bf4 Raa8 23.Be3 Rd8 24.Kg4 Re8 25.Bg5 Ra6  (39.76)
43 [-2.55]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Bf4 b5 12.Be3 Ra6 13.Kg3 Rd8 14.Kf2 Raa8 15.Kg3 Re8 16.Kf2 Re7 17.Bg5 Rd7 18.Be3 Rc7 19.Bf4 Rb7 20.Be3 Rd7 21.Kg3 Ra6 22.Kg2 Re7 23.Kg3 Rb7 24.Kf2 Rc7 25.Kg3 Kg8  (43.43)
44 [-2.55]  1.... Rxb7 2.Rxa3 Ra8 3.Bc1 Rc7 4.Kf2 a4 5.h4 h6 6.gxh6 g6 7.Bf4 Rc5 8.Bd6 Rca5 9.Bc7 Rc8 10.Bd6 Kh7 11.Bf4 b5 12.Be3 Ra6 13.Kg3 Rd8 14.Kf2 Raa8 15.Kg3 Rd7 16.Kf2 Rc7 17.Kg3 Re8 18.Kf2 Rcc8 19.Bg5 Ra8 20.Kg3 Ra7 21.Kg4 Rea8 22.Be3 Rd7 23.Kg3 Rc8 24.Kf2 Rd6 25.Bf4 Ra6 26.Kg3  (51.62)
45 [-2.66]  1.... Rxd4  (56.79)
45 [-3.31]  1.... Rxd4 2.Bxd4 Nc2 3.Bxb6 Rxb7 4.Rxa5 h5 5.Bf2 Rb1+ 6.Kg2 Ne1+ 7.Kg3 h4+ 8.Kg4 Be6+ 9.Kxh4 Nxf3+ 10.Kg3 Nd2 11.Ra4 Kh7 12.Rd4 Rb2 13.h4 Rc2 14.Be1 Nc4 15.Rd1 Ne3 16.Rb1 Kg6 17.Ra1 Nc4 18.Rd1 Re2 19.Kf3 Rh2 20.Bg3 Rc2 21.Kf4 Rxc3 22.Be1 Rh3 23.Bg3 Ne5 24.Rg1 Nc6 25.Ke3 Kh5 26.Ke2 Kg4 27.Be1+ Kf4  (76.24)

The numbers at the end of each line is the time in seconds. 65 seconds is as good as it gets. I tried it with 7-man TB but that just made it slower. The NVMe drive couldn't keep up with the request rate for TB files and it made it take for ever. I also tried it with 8gb of TT and this took 11 minutes 8 seconds. So, the size of the TT make a big difference. So does the CPU load and TB. 5-man TB's seemed slower, 6-man was just right, and 7-man would need a faster NVMe drive than mine ( I have a faster one on the way) but it may need a striped array to make 7-man worth the effort.

Regards,

Zenmastur

[mmt]

1. g4 d5 2. Bg2 Bxg4 3. c4 c6 4. Qb3 e6 5. Qxb7 Nd7 6. Nc3 Ne7 7. cxd5 exd5 8. d4 Rb8 9. Qa6 Rb6 10. Qd3 Ng6 11. h3 Be6 12. Nf3 Bd6 13. h4 h5 14. b3 Nf6 15. Bg5 O-O 16. e3 Re8 17. Kf1 Bg4 18. Ne1 Bb4 19. Na4

[d]3qr1k1/p4pp1/1rp2nn1/3p2Bp/Nb1P2bP/1P1QP3/P4PB1/R3NK1R b - - 3 2

[Ovyron]

65 seconds is as good as it gets.

Wow, so I have to revise my conjecture, because if 1.g4 loses, then according to it you might be able to beat any white defense at 2min/move o_O

[Alayan]

Ethereal 11.91 at depth 42 had Na4 as best, Nc2 as 2nd best and Kg1 as 3rd best ; with evaluations around -1.5.

White seems to be steadily heading towards a loss.

[jp]

3qr1k1/p4pp1/1rp2nn1/3p2Bp/Nb1P2bP/1P1QP3/P4PB1/R3NK1R b - - 3 2

Komodo 13.2, depth 28: -0.94 (Rb8).

[Ovyron]

Yeah, even Stockfish in some variations is showing -0.80 scores at depth 38, but jumps to -1.90 after feeding it the winning lines for black. I have stopped using Leela, as I think refuting all her variations has been a big waste of time.