Old position I posted a while back

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Eelco de Groot
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Re: Old position I posted a while back

Post by Eelco de Groot »

Eelco de Groot wrote:
[pgn]
[Event "?"]
[Site "?"]
[Date "2017.08.20"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "r2r1q1k/5p1p/4pP2/pppbB2Q/1b6/1P4P1/5PBP/R2R2K1 w - -"]

1. Rxd5 exd5 2. Rd1 d4 3. Be4 Qg8 4. g4 Re8 5. Rd3 c4
6. Rh3 Rxe5 7. Qxe5 Re8 8. Qf4 Rxe4 9. Qxe4 c3 10. Kh1 Qg6
11. Qe8+ Qg8 12. Qc6 Qg6 13. Rd3 h6 14. Rxd4 Kh7 15. f3
Qb1+ 16. Kg2 Qc2+ 17. Kg3 Qe2 18. Rd7 Kg6 19. Rd8 Kh7 *
[/pgn]
This looked like a draw, but probably not forced. Score stays level but then Stockfish went into a deep think. I did not go much further but it seems convincing:

[D]3R4/5p1k/2Q2P1p/pp6/1b4P1/1Pp2PK1/4q2P/8 w - -

Engine: Test Imbalance HT (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G.

38 1:17 +7.49 20.Re8 {$17} Bd6+ 21.f4 Qd3+ 22.Kh4 Qd4
23.Rh8+ Kg6 24.f5+ Kxf6 25.Kh5 Qc5
26.Qe8 Bf4 27.Qd8+ Qe7 28.Qb6+ Ke5
29.Qxb5+ Kd4 30.Qc4+ Ke3 31.Qxc3+ Kf2
32.h4 Bg3 33.Qd4+ (1.127.187.309) 14474

38 1:17 +4.87 20.Rd7 Kg6 21.Rd8 Qe6 22.Qxb5 Qxf6
23.Qd3+ Kg7 24.Qd4 Qxd4 25.Rxd4 f5
26.h3 Kg6 27.Rc4 fxg4 28.hxg4 Kf6
29.Kf4 Kf7 30.Ke4 Kg6 31.Rc6+ Kg7
32.Kd3 Kh7 33.Kd4 (1.127.187.309) 14474

38 1:17 +3.91 20.Qd5 Qe1+ 21.Kf4 Qd2+ 22.Qxd2 cxd2
23.Ke3 a4 24.bxa4 bxa4 25.Ke2 a3
26.h4 Kg6 27.Rb8 Bc5 28.Rb5 a2
29.Ra5 Kxf6 30.Rxa2 Bb4 31.Ra6+ Kg7
32.h5 Bc3 33.Rd6 (1.127.187.309) 14474

Probably already 19...Kg7 (43...Kg7 I think in the game) was not so good if I back up a little, by one ply and also a very short analysis here:

[D]3R4/5p2/2Q2Pkp/pp6/1b4P1/1Pp2PK1/4q2P/8 b - -

Engine: Test Imbalance HT (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G.

47 1:43 +4.87 19...Qe5+ 20.Kh3 Qe6 21.Qxb5 Qxf6
22.Qd3+ Kg7 23.Rc8 Bd6 24.Rc6 c2
25.Rxc2 Be5 26.Qd5 Bc3 27.Qe4 Bb2
28.Rc5 Qd6 29.Rd5 Qb6 30.Kg2 Bf6
31.Qd3 Qb4 32.Rd7 Ba1 (1.364.517.898) 13142

47 1:43 +4.87 19...Qe6 20.Qxb5 Qxf6 21.Qd3+ Kg7
22.Qd4 Qxd4 23.Rxd4 f5 24.h3 Kg6
25.Rc4 fxg4 26.hxg4 Kf6 27.Kf4 Kf7
28.Ke4 Kg6 29.Rc6+ Kg7 30.Kd3 Kh7
31.Kd4 Kg7 32.Rxc3 Kg6 (1.364.517.898) 13142

46 1:43 +4.94 19...Qe1+ 20.Kf4 Qc1+ 21.Ke5 Qe1+
22.Qe4+ Qxe4+ 23.fxe4 Ba3 24.Rg8+ Kh7
25.Rc8 Kg6 26.Kd5 Kxf6 27.e5+ Kg6
28.Rxc3 Kg7 29.Rc8 a4 30.bxa4 bxa4
31.Rc4 Be7 32.Rxa4 Bd8 (1.364.517.898) 13142

The scores are high enough to believe White still winning. I did go back to where Andrew was diverging from "my" line with 10. Kg2 instead of 10. Kh1 I still don't know if that actually makes a difference but Stockfish does like it better now:

[D]6qk/5p1p/5P2/pp6/1b1pQ1P1/1Pp4R/5P1P/6K1 w - -

Engine: Test Imbalance HT (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

54 414:55 +3.64 10.Kg2 Qg6 11.Qa8+ Qg8 12.Qc6 Qg6
13.Rd3 h5 14.Rxd4 c2 15.f3 Ba3
16.Rd8+ Kh7 17.Qc8 Qxf6 18.Qxc2+ Kg7
19.Rd5 hxg4 20.fxg4 Be7 21.Rxb5 Qd4
22.h3 Qe3 23.Rf5 (307.643.625.398) 12357

54 414:55 +3.45 10.Kh1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Rd3 h6 14.Rxd4 c2 15.h4 c1R+
16.Qxc1 Qxf6 17.Qf4 Qxh4+ 18.Kg2 Kg7
19.Qe5+ Kg8 20.Qxb5 Qe7 21.Qd5 Kg7
22.Qc4 Qb7+ 23.Rd5 (307.643.625.398) 12357

54 414:55 +2.33 10.Rh5 a4 11.Rxb5 c2 12.Qxc2 Qxg4+
13.Kf1 Qh3+ 14.Ke2 Qg4+ 15.f3 Qg2+
16.Kd3 Qg6+ 17.Kxd4 Qxf6+ 18.Ke3 Qh6+
19.f4 Qh3+ 20.Kd4 Qd7+ 21.Rd5 axb3
22.Qxb3 Qa7+ 23.Ke4 (307.643.625.398) 12357

54 414:55 +1.00 10.Qc6 Qg6 11.Rd3 h5 12.Qc8+ Qg8
13.Qc7 Qg6 14.Rxd4 c2 15.Qc8+ Kh7
16.Kf1 hxg4 17.h4 g3 18.f3 Ba3 19.h5 c1Q+
20.Qxc1 Qf5 21.Qe3 Qh3+ 22.Ke2 Qg2+
23.Kd3 (307.643.625.398) 12357

54 414:55 +0.81 10.Kf1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Qc8+ Qg8 14.Qc7 a4 15.bxa4 bxa4
16.Rd3 a3 17.Rxd4 a2 18.Rd1 h5 19.h3 c2
20.Ra1 hxg4 21.Qxc2 gxh3 22.Qc6 h2
23.Qg2 (307.643.625.398) 12357
____________________________________________________

55 495:37 +3.86 10.Kg2 Qg6 11.Qa8+ Qg8 12.Qc6 Qg6
13.Rd3 h5 14.Rxd4 Kh7 15.f3 Be7
16.Qxb5 Bxf6 17.Re4 c2 18.Qc4 hxg4
19.Rxg4 Bg5 20.f4 c1R 21.Qxc1 Qe4+
22.Kf2 Bf6 23.Qd2 (368.471.114.934) 12390

55 495:37 +3.45 10.Kh1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Rd3 h6 14.Rxd4 c2 15.h4 c1R+
16.Qxc1 Qxf6 17.Qf4 Qxh4+ 18.Kg2 Kg7
19.Qe5+ Kg8 20.Qxb5 Qe7 21.Qd5 Kg7
22.Qc4 Qb7+ 23.Rd5 (368.471.114.934) 12390

55 495:37 +2.33 10.Rh5 a4 11.Rxb5 c2 12.Qxc2 Qxg4+
13.Kf1 Qh3+ 14.Ke2 Qg4+ 15.f3 Qg2+
16.Kd3 Qg6+ 17.Kxd4 Qxf6+ 18.Ke3 Qh6+
19.f4 Qh3+ 20.Kd4 Qd7+ 21.Rd5 axb3
22.Qxb3 Qa7+ 23.Ke4 (368.471.114.934) 12390

55 495:37 +0.95 10.Qc6 Qg6 11.Rd3 h5 12.Rxd4 c2
13.Qc8+ Kh7 14.Kf1 hxg4 15.h4 g3
16.f3 Ba3 17.h5 c1Q+ 18.Qxc1 Qf5
19.Qe3 Qh3+ 20.Ke2 Qg2+ 21.Kd3 Qf1+
22.Kc2 Qf2+ 23.Qxf2 (368.471.114.934) 12390

55 495:37 +0.76 10.Kf1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Qc8+ Qg8 14.Qc7 a4 15.bxa4 bxa4
16.Rd3 a3 17.Rxd4 a2 18.Rd1 h5 19.h3 c2
20.Ra1 hxg4 21.Qxc2 gxh3 22.Qc6 h2
23.Qg2 (368.471.114.934) 12390
____________________________________________________

56 618:13 +3.98 10.Kg2 Qg6 11.Qa8+ Qg8 12.Qc6 Qg6
13.Rd3 h5 14.Rxd4 c2 15.f3 Ba3
16.Rd8+ Kh7 17.Qc8 Qxf6 18.Qxc2+ Kg7
19.Rd5 hxg4 20.fxg4 Bd6 21.Qd2 Be5
22.Qe3 Bf4 23.Qd4 (458.602.836.954) 12363

56 618:13 +3.37 10.Kh1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Rd3 h6 14.Rxd4 c2 15.h4 c1R+
16.Qxc1 Qxf6 17.Qf4 Qxh4+ 18.Kg2 Kg7
19.Qe5+ Kg8 20.Qxb5 Qe7 21.Qd5 Kg7
22.Rf4 Bc3 23.Rf3 (458.602.836.954) 12363

56 618:13 +2.33 10.Rh5 a4 11.Rxb5 c2 12.Qxc2 Qxg4+
13.Kf1 Qh3+ 14.Ke2 Qg4+ 15.f3 Qg2+
16.Kd3 Qg6+ 17.Kxd4 Qxf6+ 18.Ke3 Qh6+
19.f4 Qh3+ 20.Kd4 Qd7+ 21.Rd5 axb3
22.Qxb3 Qa7+ 23.Ke4 (458.602.836.954) 12363

55 618:13 +0.95 10.Qc6 Qg6 11.Rd3 h5 12.Rxd4 c2
13.Qc8+ Kh7 14.Kf1 hxg4 15.h4 g3
16.f3 Ba3 17.h5 c1Q+ 18.Qxc1 Qf5
19.Qe3 Qh3+ 20.Ke2 Qg2+ 21.Kd3 Qf1+
22.Kc2 Qf2+ 23.Qxf2 (458.602.836.954) 12363

55 618:13 +0.76 10.Kf1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Qc8+ Qg8 14.Qc7 a4 15.bxa4 bxa4
16.Rd3 a3 17.Rxd4 a2 18.Rd1 h5 19.h3 c2
20.Ra1 hxg4 21.Qxc2 gxh3 22.Qc6 h2
23.Qg2 (458.602.836.954) 12363

If 10. Kh1 is winning it seems at least plausible (to me right now) 10. Kg2 is winning as well and Vincent's find of 25...a4
2) after 24.Rxd5 exd5 25.Rd1 a4, 2 best moves mode :
is the most interesting (to me :) right now)
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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acase
Posts: 981
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Old position I posted a while back

Post by acase »

Lyudmil Tsvetkov wrote: the Rd1 d4 line seems inconclusive: SF still at 232 cps after a very long search.

Rd1 Qg8 seems easily won for white.


Here is what my computer thinks after 12 hours 47 minutes analyzing the Rd1 d4 line (eval is steadily climbing slowly):


26.Be4 Qg8 27.g4 Re8 28.Rd3 c4 29.Rh3 Rxe5 30.Qxe5 Re8 31.Qf5 Rxe4 32.Qxe4 c3 33.Kg2 Ba3 34.Rh5 Qg6 35.Qe8+ Qg8 36.Qe2 Qg6 37.Rxb5 Qxf6 38.Qe4 Kg7 39.Rf5 Qg6 40.Qxd4+ Kg8 41.Qxc3 Qxg4+ 42.Qg3 Qxg3+ 43.fxg3 Bb4 44.Kf3 Be1 45.h4 h6 46.h5 Kg7 47.g4 Bb4 48.Ke4 Bd2 49.Rd5 Be1 50.Kf3 Kf6 51.Kf4 Bb4 52.Ke4 Kg7 53.Kf5 Be1 54.Rd7 Bb4 55.Ra7 Bd2 56.Ra8 Bb4 57.Ra6 Bd2 58.Ra7 Bb4 59.Ra8 Be1 60.Rc8 Bb4 61.Rc6 Be7 62.Rc4 Bb4 63.Rc8 Bd2 64.Rc7 Bb4 65.Rc1 Bd2 66.Rd1 Bb4 67.Rd3 Be1 68.Rd5 Bb4 69.Rb5
+- (3.99) Depth: 62/88 01:19:12 167814MN
26.Be4
+- (4.06 ++) Depth: 63/96 02:41:14 344396MN
26.Be4
+- (4.14 ++) Depth: 63/96 03:20:38 429357MN
26.Be4
+- (4.25 ++) Depth: 63/96 03:55:05 503935MN
26.Be4
+- (4.41 ++) Depth: 63/107 04:49:33 622005MN
26.Be4
+- (4.62 ++) Depth: 63/120 05:40:12 732854MN
26.Be4 Qg8 27.g4 Re8 28.Rd3 c4 29.Rh3 Rxe5 30.Qxe5 Re8 31.Qf5 Rxe4 32.Qxe4 c3 33.Kg2 Ba3 34.Rh5 Qg6 35.Qe8+ Qg8 36.Qe2 Qg6 37.Rxb5 Qxf6 38.Qe4 Kg8 39.Rxa5 Bd6 40.Kf1 Bf8 41.Ra4 Qd6 42.Ke2 Bg7 43.Rc4 h6 44.Kd3 Qa6 45.Qf5 Bf8 46.Kxd4 Qa2 47.Ke3 Qxb3 48.Qd3 Qb8 49.h3 Bg7 50.Qd7 Qb6+ 51.Kf3 Qf6+ 52.Ke2 Bf8 53.Qc6 Qe5+ 54.Kf1 c2 55.Rxc2 h5 56.gxh5 Qxh5 57.Rc3 Kh7 58.Rf3 Bd6 59.Qe4+ Kg7 60.h4 Bc7 61.Rf5 Qd1+ 62.Kg2 Qd6 63.Rd5 Qh2+ 64.Kf1 Qh3+ 65.Qg2+ Qxg2+ 66.Kxg2 Bb6 67.Rb5 Bd4 68.Rg5+ Kh6 69.Kg3 Kh7 70.Rd5 Bb6 71.h5 Bc7+ 72.Kf3
+- (4.62) Depth: 63/120 06:18:09 815333MN
26.Be4 Qg8 27.g4 Re8 28.Rd3 c4 29.Rh3 Rxe5 30.Qxe5 Re8 31.Qf5 Rxe4 32.Qxe4 c3 33.Kg2 Ba3 34.Rh5 Qg6 35.Qe8+ Qg8 36.Qe2 Qg6 37.Rxb5 Qxf6 38.Qe4 Kg8 39.Rxa5 Bd6 40.Kf1 Bf8 41.Ra4 Qd6 42.Ke2 Bg7 43.Rc4 h6 44.Kd3 Qa6 45.Qf5 Bf8 46.Kxd4 Qa2 47.Ke3 Qxb3 48.Qd3 Qb8 49.h3 Bg7 50.Qd7 Bf8 51.Rc8 Qe5+ 52.Kf3 Qf6+ 53.Kg2 Kg7 54.Qe8 Qd6 55.Qe4 Be7 56.Rxc3 Bf6 57.Rc8 Qd2 58.Rc5 Qd8 59.Qc6 Bg5 60.Rf5 Qe7 61.Qc3+ Kg8 62.Qe5 Qb7+ 63.Qd5 Qa7 64.Re5 Bh4 65.Qf3 Kg7 66.Rh5 Qe7 67.Ra5 Kh7 68.Ra6 Bg5 69.Ra4 Qe6 70.Qd3+ Kg7 71.Ra6 Qe5 72.Rc6 Qf4 73.Rd6 Kg8
+- (4.62) Depth: 64/102 06:33:51 849711MN
26.Be4
+- (4.70 ++) Depth: 65/96 07:31:42 978891MN
26.Be4
+- (4.77 ++) Depth: 65/96 08:06:05 1053536MN
26.Be4
+- (4.89 ++) Depth: 65/96 08:23:21 1091071MN
26.Be4 Qg8 27.g4 Re8 28.Rd3 Rxe5 29.Qxe5 Re8 30.Qf4 c4 31.Rh3 Rxe4 32.Qxe4 c3 33.Kg2 Ba3 34.Rh5 Qg6 35.Qe8+ Qg8 36.Qe2 Qg6 37.Rxb5 Qxf6 38.Qe4 Kg8 39.Rxa5 Bd6 40.Kf1 Bf8 41.Ra4 Qd6 42.Ke2 Bg7 43.Rc4 h6 44.Kd3 Qa6 45.Qf5 Bf8 46.Kxd4 Qa2 47.Ke3 Qxb3 48.Qd3 Qb8 49.h3 Bg7 50.Qd7 Bf8 51.Rc8 Qe5+ 52.Kf3 Qf6+ 53.Kg2 Kg7 54.Qe8 Qd6 55.Qe4 Be7 56.Rxc3 Bf6 57.Rf3 Bh4 58.Qc4 Qg6 59.Qd5 Bf6 60.Rf5 Bh4 61.Qe5+ Kh7 62.Qd4 Kg8 63.Qf4 Be7 64.Qb8+ Bf8 65.Qa8 Kg7 66.Rb5 Bd6 67.Qf3 Qe6 68.Qa8 Qe2 69.Qd5 Qe8 70.Ra5
+- (4.92) Depth: 65/105 09:32:48 1244409MN
26.Be4 Qg8
+- (4.84 --) Depth: 66/108 10:28:41 1368786MN
26.Be4
+- (4.92 ++) Depth: 66/108 10:33:22 1379231MN
26.g4
+- (5.03 ++) Depth: 66/108 12:47:00 1673097MN
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acase
Posts: 981
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Old position I posted a while back

Post by acase »

Lyudmil Tsvetkov wrote:
a4 is a good find.

I did not see it, not my SF was so kind to point to it.

after a forced line a4 ba4 ba4 Bd5 Qe8 Ba8 Ra8:

[d]r3q2k/5p1p/5P2/2p1B2Q/pb6/6P1/5P1P/3R2K1 w - - 0 6

we get here, which is most certainly a draw

so, probably, unless Andrew finds some improvement for white, the position is a draw, unless Bf4 is stronger and wins, which I don't very much believe.

probably, big white advantage, but still a draw, black just holding.

in the actual game, featuring 2400 elo players(was it correspondence?), black lost in some 6 moves or so... :shock:

seemingly, our forum is much better than those correspondence players.

I think I did did find an improvement (with my computer's assistance of course) in your 25...a4 26.ba4 ba4 27.Bd5 Qe8 28.Ba8 Ra8 line for white, on move 28, how about trying 28. Kg2! instead of 28. Bxa8.
28.Kg2! prevents the black rook on d8 from capturing the white rook on d1 with check and therefore threatens the very nasty 29.Bxf7!


position after 28.Kg2!

[d]r2rq2k/5p1p/5P2/2pBB2Q/pb6/6P1/5PKP/3R4 b - - 0 28


In this postion here is what Stockfish says on my computer so far (again eval is steadily climbing slowly):

New game
r2rq2k/5p1p/5P2/2pBB2Q/pb6/6P1/5PKP/3R4 b - - 0 1

Analysis by Stockfish 190817 64 BMI2:

28...Rab8 29.Bxf7 Qc6+ 30.Bd5 Rxd5 31.Qf3 Rf8 32.Rxd5
+- (3.25) Depth: 7/8 00:00:00 15kN
28...c4 29.Bxf7 Qc6+ 30.Bd5 Rxd5 31.Qf3 h6 32.Rxd5 Rf8
+- (3.25) Depth: 8/9 00:00:00 26kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Ra7 Qg6
+/= (0.62) Depth: 9/14 00:00:00 61kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Qe2 Bf8 35.Rc7 Qg6 36.Qc4
+/- (1.42) Depth: 10/15 00:00:00 77kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5
+- (2.42) Depth: 11/34 00:00:00 341kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3
+- (2.52) Depth: 12/34 00:00:00 428kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Ra7 Kg8 38.Ra4 Qxf3+ 39.Kxf3 Rd5 40.g4 h5 41.Ke4
+- (2.41) Depth: 13/34 00:00:00 533kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Ra7 Kg8 38.Ra4 Qxf3+ 39.Kxf3 Rd5 40.Rg4+ Kf8 41.h4
+- (2.40) Depth: 14/34 00:00:00 629kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.g4 Kh7 41.h4 Ra5 42.Rf5 Ra3 43.h5
+- (2.55) Depth: 15/34 00:00:00 754kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.g4 Kh7 41.h4 Ra5 42.Rf5 Ra3 43.h5 Ra2 44.Rc5
+- (2.55) Depth: 16/34 00:00:00 876kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.g4 Kh7 41.h4 Ra5 42.Rf5 Ra3 43.Kh2 Kg8 44.h5 Ra4 45.f4 Ra2+ 46.Kg1
+- (2.76) Depth: 17/42 00:00:00 1091kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Ra4 Qxf3+ 38.Kxf3 Rd6 39.Rf4 Kh7 40.Rf5 Rd3+ 41.Kg4 Kg6 42.h4 Rd4+ 43.f4
+- (2.34) Depth: 18/42 00:00:00 1551kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kh7 41.Rf5 Ra4 42.Kh3 Ra3 43.Kg4 Rc3 44.Kh5 Ra3 45.g4 Rh3 46.f3 Rg3 47.g5 hxg5 48.hxg5
+- (3.07) Depth: 19/42 00:00:00 1841kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Rb3 43.Kg4 Rb4+ 44.Kh5 Kh7 45.g4 Rb2 46.Rf4 Rd2
+- (3.17) Depth: 20/46 00:00:00 3027kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Rb3 43.Kg4 Rb4+ 44.Kh5 Kh7 45.g4 Rb2 46.Rf4 Rd2 47.g5
+- (3.17) Depth: 21/46 00:00:00 3148kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Rb3 43.Kg4 Rb4+ 44.Kh5 Kh7 45.g4 Rb2 46.Rf4 Rd2 47.g5 hxg5 48.hxg5 Kg8 49.f3
+- (3.17) Depth: 22/46 00:00:00 3240kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Ra4 Qxf3+ 38.Kxf3 Rd6 39.g4 Rxf6+ 40.Rf4 Ra6 41.Rxf7 Ra3+ 42.Kg2 h5 43.g5 Kg8 44.Rf4
+- (2.42) Depth: 23/46 00:00:00 4919kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Ra6 43.Kg4 Kh8 44.f3 Kh7 45.Kh3 Ra1
+- (3.00) Depth: 24/46 00:00:00 5328kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Rb3 43.Kg4 Rb2 44.Kh5 Kh7 45.g4 Rc2 46.Rf4 Re2 47.g5 hxg5 48.hxg5 Kg8 49.Kh6 Re1 50.Rh4
+- (3.07) Depth: 25/56 00:00:00 5971kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rd6 40.Rf4 Ra6 41.Rf5 Ra4 42.h4 Rb4 43.Kh3 Rb3 44.Kg4 Kh7 45.Kh5 Rb2 46.Kg4 Rb7
+- (2.85) Depth: 26/56 00:00:00 8015kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.g4 Kh7 41.h4 Ra5 42.Rf5 Ra3 43.Kh2 Kg8 44.f3 Kh7 45.h5 Kg8 46.f4 Ra2+ 47.Kg1 Ra3 48.Kf1 Ra2 49.g5 hxg5 50.fxg5 Rh2 51.g6 Rh4 52.Ke2
+- (3.25) Depth: 27/56 00:00:00 11416kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Rb3 43.Kg4 Kh7 44.Kh5 Rb4 45.g4 Rb2
+- (2.69) Depth: 28/56 00:00:00 13751kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.Rf5 Ra4 41.h4 Kh7 42.Kh3 Ra3 43.Kg4 Rb3 44.Kh5 Rb4 45.g4 Rb2 46.g5 hxg5 47.hxg5 Re2
+- (2.42) Depth: 29/56 00:00:00 19334kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rd6 40.Rf4 Ra6 41.g4 Kh7 42.h4 Ra5 43.Rf5 Ra3 44.Rd5 Ra4 45.Kg3 Ra3+ 46.Kf4 Kg6 47.Rf5 Kh7 48.Ke4 Ra4+ 49.Kf3 Rc4 50.Kg3 Rc3+ 51.Kh2 Ra3 52.Kg2 Rb3 53.h5 Kg8 54.f4 Rb2+ 55.Kg3 Rb3+ 56.Kf2 Rb2+ 57.Ke3 Rb6
+- (3.25) Depth: 30/59 00:00:01 30989kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.g4 Ra4+ 45.Kf3 Ra3+ 46.Kf4 Ra4+ 47.Kg3 Ra3+ 48.Rf3 Ra4 49.Rd3 Kh7 50.Rd5 Ra3+ 51.Kf4 Kg6 52.Rf5 Kh7 53.Ke4 Ra4+ 54.Kf3 Rc4
+- (3.25) Depth: 31/59 00:00:01 33039kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.g4 Ra4+ 45.Kf3 Ra3+ 46.Kf4 Ra4+ 47.Kg3 Ra3+ 48.Rf3 Ra5 49.Kh3 Kh7 50.Rf5
+- (3.24) Depth: 32/59 00:00:01 34359kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qb5 36.Qxa3 Qc6 37.Qf3 Rd6 38.Rf4 Qxf3+ 39.Kxf3 Ra6 40.g4 Kg8 41.Kg2 Rb6 42.Kg3 Ra6 43.Kf3 Ra3+ 44.Kg2 Ra6 45.Rf5 Kf8 46.g5 Kg8 47.h4 h6 48.f4 hxg5 49.fxg5 Kh7 50.h5
+- (3.24) Depth: 33/59 00:00:01 36467kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rb5 Ra6 45.Kf5 Ra3 46.f4 Rxg3 47.Rb7 Kg8 48.Rb8+ Kh7 49.Rf8 Ra3 50.Rxf7+ Kg8 51.Rg7+ Kf8
+- (3.17) Depth: 34/59 00:00:01 38972kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rg5 40.Rf4 Rg8 41.h4 Rd8 42.Rf5 Rd4 43.Kf3 Rd3+ 44.Ke4 Ra3 45.Rd5 Ra4+ 46.Kf5 Ra3 47.Kg4 Ra6 48.Rf5 Rd6 49.Kh5 Kh7 50.g4 Rd2 51.g5 hxg5 52.hxg5 Kg8 53.Rf4 Rd3 54.Rc4 Rh3+ 55.Kg4
+- (3.17) Depth: 35/59 00:00:01 39850kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Kh7 49.Rxh5+ Kg6 50.Rg5+ Kxf6 51.h5 Ra4+ 52.Kf3 Ra3+ 53.Kg4 Ra6 54.Rc5 Rb6 55.Ra5 Rb3 56.Rg5
+- (3.25) Depth: 36/59 00:00:01 48773kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Kh7 49.Rxh5+ Kg6 50.Rg5+ Kxf6 51.h5 Ra4+ 52.Kf3 Ra3+ 53.Kg4 Ra6 54.Rc5 Rb6 55.Ra5 Rb3 56.Rg5 Rc3
+- (3.25) Depth: 37/59 00:00:01 50150kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Kh7 49.Rxh5+ Kg6 50.Rg5+ Kxf6 51.h5 Ra4+ 52.Kf3 Ra3+ 53.Kg4 Ra6 54.Rc5 Rb6 55.Ra5 Rb3 56.Rg5 Rc3 57.h6
+- (3.25) Depth: 38/59 00:00:02 62401kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Kh7 49.Rxh5+ Kg6 50.Rg5+ Kxf6 51.h5 Ra4+ 52.Kf3 Ra3+ 53.Kg4 Ra1 54.Rc5 Ra8 55.Rf5+ Kg7 56.Kg5 Rf8 57.Rc5 f6+ 58.Kg4
+- (3.25) Depth: 39/61 00:00:02 67148kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Ra4+ 49.Kf3 Ra3+ 50.Kg2 Kh7 51.Rxh5+ Kg6 52.Rg5+ Kxf6 53.h5 Ra8 54.Kh3 Ke6 55.Kg4 Rc8 56.Re5+ Kf6 57.Rf5+ Ke6 58.Rg5 Rh8 59.Re5+ Kf6 60.Rc5 Ke7
+- (3.25) Depth: 40/65 00:00:02 69477kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Ra4+ 49.Kf3 Ra3+ 50.Kg2 Kh7 51.Rxh5+ Kg6 52.Rg5+ Kxf6 53.h5 Ra8 54.Kh3 Ke6 55.Kg4 Rc8 56.Re5+ Kf6 57.Rf5+ Ke6 58.Rg5 Rh8 59.Re5+ Kf6
+- (3.25) Depth: 41/65 00:00:02 77281kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Ra4+ 49.Kf3 Ra3+ 50.Kg2 Ra2+ 51.Kh3 Ra6 52.Rxh5 Rxf6 53.Rg5+ Kh7 54.Kg4 Ra6 55.Rc5 Kh6 56.Rc7 Rg6+ 57.Kf3 Kg7 58.g4
+- (3.25) Depth: 42/65 00:00:02 83316kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Rd6 44.g4 Kg8 45.Kf3 Rd3+ 46.Kg2 Kh7 47.h5 Rd2 48.Kf3 Kg8 49.Ke3 Ra2 50.f4 Ra3+ 51.Kd4 Ra4+ 52.Ke5 Ra3 53.Kd5 Ra6 54.Kc4 Rc6+ 55.Kb4 Rd6 56.g5 Kh7
+- (3.25) Depth: 43/65 00:00:03 97251kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Rd2 44.g4 Rb2 45.f3 Rb4+ 46.Ke3 Rb6 47.h5 Re6+ 48.Kf2 Kg8 49.f4 Ra6 50.Ke3 Ra3+ 51.Kd4 Ra4+ 52.Ke5 Ra7 53.Kd5 Ra6 54.Kc5 Kh7 55.Kb5 Ra3
+- (3.25) Depth: 44/58 00:00:03 126MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Rd2 44.g4 Rb2 45.f3 Rb4+ 46.Ke3 Rb6 47.Kf4 Kh7 48.h5 Kg8 49.Ke4 Ra6 50.f4 Ra4+ 51.Ke5 Rc4 52.Kd6 Rd4+ 53.Ke7 Re4+ 54.Re5 Rxf4 55.g5 hxg5 56.Rxg5+ Kh7 57.Kxf7 Ra4 58.Re5 Ra7+ 59.Kf8
+- (3.25) Depth: 45/78 00:00:04 134MN
28...Rxd5
+- (3.17 ++) Depth: 46/67 00:00:06 219MN
28...Rxd5
+- (3.10 ++) Depth: 46/67 00:00:07 260MN
28...Rxd5
+- (2.98 ++) Depth: 46/67 00:00:08 311MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra2 42.Kh3 Ra4 43.g4 Ra3+ 44.f3 Kh7 45.h5 Kg8 46.Kg3 Rd3 47.Kh2 Rd2+ 48.Kh3 Rd3 49.Kh4 Ra3 50.f4 Rf3 51.g5 hxg5+ 52.Rxg5+ Kh8 53.Kg4 Rf1 54.Rc5 Rg1+ 55.Kf5 Rh1 56.Kg5 Kh7
+- (3.25) Depth: 46/67 00:00:09 326MN
28...Rxd5
+- (3.17 ++) Depth: 47/58 00:00:09 328MN
28...Rxd5
+- (3.10 ++) Depth: 47/65 00:00:10 382MN
28...Rxd5
+- (2.98 ++) Depth: 47/65 00:00:11 417MN
28...Rxd5
+- (2.82 ++) Depth: 47/65 00:00:13 506MN
28...Rxd5
+- (2.61 ++) Depth: 47/76 00:00:18 696MN
28...Rxd5 29.Rxd5
+- (3.32 --) Depth: 47/82 00:01:22 3057MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rd6 40.Rf4 Ra6 41.g4 Rb6 42.Rf5 Rb2 43.h4 Kh7 44.Kh2 Rd2 45.Kh3 Rd3+ 46.f3 Ra3 47.Kg3 Ra4 48.Kf2 Ra3 49.Kg2 Ra1 50.h5 Ra2+ 51.Kg3 Kg8 52.f4 Ra3+ 53.Kh2 Ra2+ 54.Kg1 Kh7 55.g5 Kg8 56.Rc5 hxg5 57.fxg5 Kh7 58.Rc7 Kg8
+- (3.32) Depth: 47/82 00:01:46 3944MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rd6 40.Rf4 Ra6 41.g4 Rb6 42.Rf5 Rb2 43.h4 Kh7 44.Kh2 Rd2 45.Kh3 Rd3+ 46.f3 Ra3 47.Kg3 Ra4 48.Kf2 Ra3 49.Kg2 Ra1 50.h5 Ra2+ 51.Kg3 Kg8 52.f4 Ra3+ 53.Kh2 Ra2+ 54.Kg1 Ra3 55.Kf1 Ra4 56.Kg2 Ra2+ 57.Kf3 Ra6 58.Ke4 Ra4+ 59.Ke3 Ra3+ 60.Kd4 Ra4+ 61.Kd5 Ra6 62.Ke5 Ra5+ 63.Kd6 Ra6+ 64.Kd7 Ra7+ 65.Kc6
+- (3.32) Depth: 48/74 00:01:59 4418MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rd6 40.Rf4 Kh7 41.g4 Rb6 42.h4 Rb3 43.Rf3 Rb2 44.Kg3 Kg6 45.h5+ Kh7 46.Rf5 Ra2 47.f3 Kg8 48.f4 Ra3+ 49.Kh2 Ra2+ 50.Kg1 Ra3 51.Kf1 Ra4 52.Kg2 Ra2+ 53.Kf3 Ra6 54.Ke4 Ra4+ 55.Ke3 Ra3+ 56.Kd4 Ra4+ 57.Kd5 Ra6 58.Ke5 Ra5+ 59.Kd6 Ra6+ 60.Kd7 Ra7+ 61.Kd8 Ra2 62.g5 Ra8+ 63.Ke7 Ra7+ 64.Kd6 Ra6+ 65.Kd7 Ra7+ 66.Kc6 Ra4 67.Kb5 Re4
+- (3.32) Depth: 49/79 00:02:13 4930MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Kh7 40.g4 Rb6 41.h4 Rb3 42.Rf3 Rb2 43.Kg3 Ra2 44.Rf5 Ra6 45.Kg2 Ra2 46.Kh3 Ra6 47.Kg3 Kg8 48.g5 Kh7 49.Kg4 Ra2 50.Kh5 Re2 51.gxh6 Kh8 52.Kg5 Rb2 53.Ra5 Kh7 54.Rd5 Ra2 55.Re5 Rc2 56.f4 Rg2+ 57.Kf5 Rb2 58.Re7 Rb5+ 59.Kg4 Kg6 60.Ra7 Rc5 61.f5+ Kxh6 62.Rxf7 Rc4+ 63.Kg3 Rc5 64.Kf4
+- (3.32) Depth: 50/72 00:02:31 5597MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Kh7 40.g4 Rb6 41.h4 Rb3 42.Rf3 Rb2 43.Kg3 Ra2 44.Rf5 Ra6 45.Kg2 Ra2 46.Kh3 Ra6 47.Kg3 Kg8 48.g5 Kh7 49.Re5 Ra2 50.Re8 Ra4 51.f4 Ra1 52.Kg2 Ra6 53.Rf8 hxg5 54.fxg5 Kg6 55.Rg8+ Kh5 56.Rh8+ Kg6 57.Rh6+ Kf5 58.Rh7 Ra2+ 59.Kf3 Ra3+ 60.Kf2 Ra7 61.Rg7 Ra2+ 62.Ke3 Ra3+ 63.Ke2 Ra2+ 64.Kd3 Ra3+ 65.Kc2 Ke6 66.h5 Rg3 67.h6 Rh3
+- (3.32) Depth: 51/79 00:02:52 6401MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Kh7 40.g4 Rb6 41.h4 Rb3 42.Rf3 Rb2 43.Kg3 Ra2 44.Rf5 Ra6 45.Kg2 Ra2 46.Kh3 Ra6 47.Kg3 Kg8 48.g5 Kh7 49.Re5 Ra2 50.Re8 Ra4 51.f4 Ra1 52.Kg2 Ra6 53.Rf8 hxg5 54.fxg5 Kg6 55.Rg8+ Kh5 56.Rh8+ Kg6 57.Rh6+ Kf5 58.Rh7 Ra2+ 59.Kf3 Ra3+ 60.Ke2 Ke6 61.h5 Ra5 62.Rg7 Ra2+ 63.Kf3 Ra3+ 64.Ke4 Ra4+ 65.Ke3 Ra3+ 66.Kd4 Ra4+ 67.Kc3 Rh4
+- (3.32) Depth: 52/79 00:03:02 6779MN
28...Rxd5
+- (3.25 ++) Depth: 53/84 00:03:07 6939MN
28...Rxd5
+- (3.17 ++) Depth: 53/84 00:03:07 6955MN
28...Rxd5
+- (3.06 ++) Depth: 53/84 00:03:12 7157MN
28...Rxd5 29.Rxd5
+- (3.40 --) Depth: 53/91 00:04:59 10992MN
28...Rxd5 29.Rxd5
+- (3.61 --) Depth: 53/91 00:10:39 23225MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra7 Kg8 39.g4 Rd6 40.Ra8+ Kh7 41.Ra5 Kg6 42.Rf5 Rd2 43.Kg3 Kh7 44.f3 Rd1 45.h4 Rg1+ 46.Kf2 Rd1 47.h5 Rd2+ 48.Kg3 Ra2 49.Kf4 Ra6 50.Rc5 Rxf6+ 51.Rf5 Rb6 52.Rxf7+ Kg8 53.Re7 Rb5 54.Ke4 Rg5 55.Re5 Rg7 56.Kf5 Kh7 57.Kf6 Rg8 58.Re7+ Kh8 59.Rd7 Rg5 60.Rd6 Kh7 61.Ke6 Ra5 62.f4 Ra4 63.Rd7+ Kg8 64.Ke5 Rb4 65.Rc7 Rb5+ 66.Kd4 Rb4+ 67.Ke3 Ra4 68.Rc8+ Kh7
+- (3.61) Depth: 53/91 00:12:18 26807MN
28...Rxd5 29.Rxd5
+- (3.69 --) Depth: 54/90 00:17:35 38172MN
28...Rxd5 29.Rxd5
+- (3.76 --) Depth: 54/90 00:19:32 42437MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra7 Kg8 39.g4 Rd6 40.Ra8+ Kh7 41.Ra5 Kg6 42.Rf5 Rd2 43.Kg3 Ra2 44.f3 Ra3 45.h4 Kh7 46.Kh3 Kg6 47.h5+ Kh7 48.Kh2 Ra2+ 49.Kg3 Ra3 50.Re5 Rb3 51.Ra5 Rb6 52.Kf4 Rxf6+ 53.Rf5 Rc6 54.Rxf7+ Kg8 55.Rd7 Rc5 56.Ke4 Rg5 57.Rd5 Rg7 58.Kf5 Re7 59.Kf6 Ra7 60.Re5 Ra1 61.f4 Ra4 62.Kf5 Ra7 63.g5 Rf7+ 64.Kg4 Rc7 65.Re6 hxg5 66.fxg5 Kg7
+- (3.85) Depth: 54/97 00:25:09 54609MN
28...Rxd5 29.Rxd5
+- (3.92 --) Depth: 55/91 00:29:43 64496MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 Rc8 33.Rb7 Rd8 34.Qb3 Rf8 35.Qd5 h6 36.Rd7 Re8 37.Bd6 Bc3 38.Rxf7 Rd8 39.Qh5 Qg5 40.Qf3 a2 41.Qe4 Qg8 42.Rg7 a1Q 43.Rxg8+ Rxg8 44.f7 Bg7 45.fxg8Q+ Kxg8 46.Bxc5 Qf6 47.Be3 Qd6 48.h4 Qf6 49.h5 Kh8 50.g4 Qd6 51.Bf4 Qf6 52.Qe8+ Kh7 53.Kf3 Qc3+ 54.Qe3 Qf6 55.Qe4+ Kh8 56.Kg2 Kg8 57.Kg3 Qc3+ 58.Qe3 Qf6 59.Qd3 Qf7 60.Qe4 Qb3+ 61.Kg2 Qf7 62.Be3 Qd7 63.Qg6 Qd5+ 64.Kg3 Qb3 65.g5 Kh8 66.Qe8+ Qg8 67.Qxg8+ Kxg8
+- (3.96) Depth: 55/93 00:35:03 76113MN
28...Rxd5
+- (3.88 ++) Depth: 56/83 00:35:07 76283MN
28...Rxd5
+- (3.81 ++) Depth: 56/83 00:35:09 76323MN
28...Rxd5
+- (3.70 ++) Depth: 56/83 00:35:10 76366MN
28...Rxd5
+- (3.54 ++) Depth: 56/83 00:35:12 76450MN
28...Rxd5
+- (3.32 ++) Depth: 56/83 00:35:16 76577MN
28...Rxd5
+- (3.03 ++) Depth: 56/83 00:36:45 79738MN
28...Rxd5 29.Rxd5
+- (4.03 --) Depth: 56/100 00:40:23 87594MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra7 Kg8 39.g4 Rd6 40.Ra8+ Kh7 41.Ra5 Rxf6 42.Rf5 Rg6 43.Rxf7+ Kg8 44.Rf4 Re6 45.h4 Rb6 46.h5 Rb1 47.Rf5 Kg7 48.Rf3 Rd1 49.Rc3 Rd4 50.Kf3 Rd1 51.Kg3 Rg1+ 52.Kh2 Rf1 53.Kg2 Rd1 54.f4 Rd6 55.Kf3 Rf6 56.Rc7+ Kg8 57.Rc5 Rf7 58.Ke4 Kh7 59.Ke5 Rg7 60.Kf5 Rf7+ 61.Ke4 Rg7 62.Kf3 Rg8 63.Rc3 Rg7 64.Rc6 Rf7 65.Ra6 Kg7 66.Rg6+ Kh7 67.Rc6 Rb7
+- (4.25) Depth: 56/107 00:56:28 122948MN
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peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Old position I posted a while back

Post by peter »

Of course, Andrew!

I had 28.Kg2! in my .pgn about the position already in 2011, I guess that was also even the first time it was brought to a forum too, at least that's when I first stored it in my private database.

The game Loinjak- Norrellyke was played in 2011 on ICCF
Last edited by peter on Mon Aug 21, 2017 7:26 am, edited 1 time in total.
Peter.
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Lyudmil Tsvetkov
Posts: 6052
Joined: Tue Jun 12, 2012 12:41 pm

Re: Old position I posted a while back

Post by Lyudmil Tsvetkov »

Eelco de Groot wrote:
Eelco de Groot wrote:
[pgn]
[Event "?"]
[Site "?"]
[Date "2017.08.20"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "r2r1q1k/5p1p/4pP2/pppbB2Q/1b6/1P4P1/5PBP/R2R2K1 w - -"]

1. Rxd5 exd5 2. Rd1 d4 3. Be4 Qg8 4. g4 Re8 5. Rd3 c4
6. Rh3 Rxe5 7. Qxe5 Re8 8. Qf4 Rxe4 9. Qxe4 c3 10. Kh1 Qg6
11. Qe8+ Qg8 12. Qc6 Qg6 13. Rd3 h6 14. Rxd4 Kh7 15. f3
Qb1+ 16. Kg2 Qc2+ 17. Kg3 Qe2 18. Rd7 Kg6 19. Rd8 Kh7 *
[/pgn]
This looked like a draw, but probably not forced. Score stays level but then Stockfish went into a deep think. I did not go much further but it seems convincing:

[D]3R4/5p1k/2Q2P1p/pp6/1b4P1/1Pp2PK1/4q2P/8 w - -

Engine: Test Imbalance HT (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G.

38 1:17 +7.49 20.Re8 {$17} Bd6+ 21.f4 Qd3+ 22.Kh4 Qd4
23.Rh8+ Kg6 24.f5+ Kxf6 25.Kh5 Qc5
26.Qe8 Bf4 27.Qd8+ Qe7 28.Qb6+ Ke5
29.Qxb5+ Kd4 30.Qc4+ Ke3 31.Qxc3+ Kf2
32.h4 Bg3 33.Qd4+ (1.127.187.309) 14474

38 1:17 +4.87 20.Rd7 Kg6 21.Rd8 Qe6 22.Qxb5 Qxf6
23.Qd3+ Kg7 24.Qd4 Qxd4 25.Rxd4 f5
26.h3 Kg6 27.Rc4 fxg4 28.hxg4 Kf6
29.Kf4 Kf7 30.Ke4 Kg6 31.Rc6+ Kg7
32.Kd3 Kh7 33.Kd4 (1.127.187.309) 14474

38 1:17 +3.91 20.Qd5 Qe1+ 21.Kf4 Qd2+ 22.Qxd2 cxd2
23.Ke3 a4 24.bxa4 bxa4 25.Ke2 a3
26.h4 Kg6 27.Rb8 Bc5 28.Rb5 a2
29.Ra5 Kxf6 30.Rxa2 Bb4 31.Ra6+ Kg7
32.h5 Bc3 33.Rd6 (1.127.187.309) 14474

Probably already 19...Kg7 (43...Kg7 I think in the game) was not so good if I back up a little, by one ply and also a very short analysis here:

[D]3R4/5p2/2Q2Pkp/pp6/1b4P1/1Pp2PK1/4q2P/8 b - -

Engine: Test Imbalance HT (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G.

47 1:43 +4.87 19...Qe5+ 20.Kh3 Qe6 21.Qxb5 Qxf6
22.Qd3+ Kg7 23.Rc8 Bd6 24.Rc6 c2
25.Rxc2 Be5 26.Qd5 Bc3 27.Qe4 Bb2
28.Rc5 Qd6 29.Rd5 Qb6 30.Kg2 Bf6
31.Qd3 Qb4 32.Rd7 Ba1 (1.364.517.898) 13142

47 1:43 +4.87 19...Qe6 20.Qxb5 Qxf6 21.Qd3+ Kg7
22.Qd4 Qxd4 23.Rxd4 f5 24.h3 Kg6
25.Rc4 fxg4 26.hxg4 Kf6 27.Kf4 Kf7
28.Ke4 Kg6 29.Rc6+ Kg7 30.Kd3 Kh7
31.Kd4 Kg7 32.Rxc3 Kg6 (1.364.517.898) 13142

46 1:43 +4.94 19...Qe1+ 20.Kf4 Qc1+ 21.Ke5 Qe1+
22.Qe4+ Qxe4+ 23.fxe4 Ba3 24.Rg8+ Kh7
25.Rc8 Kg6 26.Kd5 Kxf6 27.e5+ Kg6
28.Rxc3 Kg7 29.Rc8 a4 30.bxa4 bxa4
31.Rc4 Be7 32.Rxa4 Bd8 (1.364.517.898) 13142

The scores are high enough to believe White still winning. I did go back to where Andrew was diverging from "my" line with 10. Kg2 instead of 10. Kh1 I still don't know if that actually makes a difference but Stockfish does like it better now:

[D]6qk/5p1p/5P2/pp6/1b1pQ1P1/1Pp4R/5P1P/6K1 w - -

Engine: Test Imbalance HT (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

54 414:55 +3.64 10.Kg2 Qg6 11.Qa8+ Qg8 12.Qc6 Qg6
13.Rd3 h5 14.Rxd4 c2 15.f3 Ba3
16.Rd8+ Kh7 17.Qc8 Qxf6 18.Qxc2+ Kg7
19.Rd5 hxg4 20.fxg4 Be7 21.Rxb5 Qd4
22.h3 Qe3 23.Rf5 (307.643.625.398) 12357

54 414:55 +3.45 10.Kh1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Rd3 h6 14.Rxd4 c2 15.h4 c1R+
16.Qxc1 Qxf6 17.Qf4 Qxh4+ 18.Kg2 Kg7
19.Qe5+ Kg8 20.Qxb5 Qe7 21.Qd5 Kg7
22.Qc4 Qb7+ 23.Rd5 (307.643.625.398) 12357

54 414:55 +2.33 10.Rh5 a4 11.Rxb5 c2 12.Qxc2 Qxg4+
13.Kf1 Qh3+ 14.Ke2 Qg4+ 15.f3 Qg2+
16.Kd3 Qg6+ 17.Kxd4 Qxf6+ 18.Ke3 Qh6+
19.f4 Qh3+ 20.Kd4 Qd7+ 21.Rd5 axb3
22.Qxb3 Qa7+ 23.Ke4 (307.643.625.398) 12357

54 414:55 +1.00 10.Qc6 Qg6 11.Rd3 h5 12.Qc8+ Qg8
13.Qc7 Qg6 14.Rxd4 c2 15.Qc8+ Kh7
16.Kf1 hxg4 17.h4 g3 18.f3 Ba3 19.h5 c1Q+
20.Qxc1 Qf5 21.Qe3 Qh3+ 22.Ke2 Qg2+
23.Kd3 (307.643.625.398) 12357

54 414:55 +0.81 10.Kf1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Qc8+ Qg8 14.Qc7 a4 15.bxa4 bxa4
16.Rd3 a3 17.Rxd4 a2 18.Rd1 h5 19.h3 c2
20.Ra1 hxg4 21.Qxc2 gxh3 22.Qc6 h2
23.Qg2 (307.643.625.398) 12357
____________________________________________________

55 495:37 +3.86 10.Kg2 Qg6 11.Qa8+ Qg8 12.Qc6 Qg6
13.Rd3 h5 14.Rxd4 Kh7 15.f3 Be7
16.Qxb5 Bxf6 17.Re4 c2 18.Qc4 hxg4
19.Rxg4 Bg5 20.f4 c1R 21.Qxc1 Qe4+
22.Kf2 Bf6 23.Qd2 (368.471.114.934) 12390

55 495:37 +3.45 10.Kh1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Rd3 h6 14.Rxd4 c2 15.h4 c1R+
16.Qxc1 Qxf6 17.Qf4 Qxh4+ 18.Kg2 Kg7
19.Qe5+ Kg8 20.Qxb5 Qe7 21.Qd5 Kg7
22.Qc4 Qb7+ 23.Rd5 (368.471.114.934) 12390

55 495:37 +2.33 10.Rh5 a4 11.Rxb5 c2 12.Qxc2 Qxg4+
13.Kf1 Qh3+ 14.Ke2 Qg4+ 15.f3 Qg2+
16.Kd3 Qg6+ 17.Kxd4 Qxf6+ 18.Ke3 Qh6+
19.f4 Qh3+ 20.Kd4 Qd7+ 21.Rd5 axb3
22.Qxb3 Qa7+ 23.Ke4 (368.471.114.934) 12390

55 495:37 +0.95 10.Qc6 Qg6 11.Rd3 h5 12.Rxd4 c2
13.Qc8+ Kh7 14.Kf1 hxg4 15.h4 g3
16.f3 Ba3 17.h5 c1Q+ 18.Qxc1 Qf5
19.Qe3 Qh3+ 20.Ke2 Qg2+ 21.Kd3 Qf1+
22.Kc2 Qf2+ 23.Qxf2 (368.471.114.934) 12390

55 495:37 +0.76 10.Kf1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Qc8+ Qg8 14.Qc7 a4 15.bxa4 bxa4
16.Rd3 a3 17.Rxd4 a2 18.Rd1 h5 19.h3 c2
20.Ra1 hxg4 21.Qxc2 gxh3 22.Qc6 h2
23.Qg2 (368.471.114.934) 12390
____________________________________________________

56 618:13 +3.98 10.Kg2 Qg6 11.Qa8+ Qg8 12.Qc6 Qg6
13.Rd3 h5 14.Rxd4 c2 15.f3 Ba3
16.Rd8+ Kh7 17.Qc8 Qxf6 18.Qxc2+ Kg7
19.Rd5 hxg4 20.fxg4 Bd6 21.Qd2 Be5
22.Qe3 Bf4 23.Qd4 (458.602.836.954) 12363

56 618:13 +3.37 10.Kh1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Rd3 h6 14.Rxd4 c2 15.h4 c1R+
16.Qxc1 Qxf6 17.Qf4 Qxh4+ 18.Kg2 Kg7
19.Qe5+ Kg8 20.Qxb5 Qe7 21.Qd5 Kg7
22.Rf4 Bc3 23.Rf3 (458.602.836.954) 12363

56 618:13 +2.33 10.Rh5 a4 11.Rxb5 c2 12.Qxc2 Qxg4+
13.Kf1 Qh3+ 14.Ke2 Qg4+ 15.f3 Qg2+
16.Kd3 Qg6+ 17.Kxd4 Qxf6+ 18.Ke3 Qh6+
19.f4 Qh3+ 20.Kd4 Qd7+ 21.Rd5 axb3
22.Qxb3 Qa7+ 23.Ke4 (458.602.836.954) 12363

55 618:13 +0.95 10.Qc6 Qg6 11.Rd3 h5 12.Rxd4 c2
13.Qc8+ Kh7 14.Kf1 hxg4 15.h4 g3
16.f3 Ba3 17.h5 c1Q+ 18.Qxc1 Qf5
19.Qe3 Qh3+ 20.Ke2 Qg2+ 21.Kd3 Qf1+
22.Kc2 Qf2+ 23.Qxf2 (458.602.836.954) 12363

55 618:13 +0.76 10.Kf1 Qg6 11.Qe8+ Qg8 12.Qc6 Qg6
13.Qc8+ Qg8 14.Qc7 a4 15.bxa4 bxa4
16.Rd3 a3 17.Rxd4 a2 18.Rd1 h5 19.h3 c2
20.Ra1 hxg4 21.Qxc2 gxh3 22.Qc6 h2
23.Qg2 (458.602.836.954) 12363

If 10. Kh1 is winning it seems at least plausible (to me right now) 10. Kg2 is winning as well and Vincent's find of 25...a4
2) after 24.Rxd5 exd5 25.Rd1 a4, 2 best moves mode :
is the most interesting (to me :) right now)
where is the d4 passed pawn?

it might be winning, but not that easily.

Vincent's a4 line draws by force.
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Lyudmil Tsvetkov
Posts: 6052
Joined: Tue Jun 12, 2012 12:41 pm

Re: Old position I posted a while back

Post by Lyudmil Tsvetkov »

acase wrote:
Lyudmil Tsvetkov wrote: the Rd1 d4 line seems inconclusive: SF still at 232 cps after a very long search.

Rd1 Qg8 seems easily won for white.


Here is what my computer thinks after 12 hours 47 minutes analyzing the Rd1 d4 line (eval is steadily climbing slowly):


26.Be4 Qg8 27.g4 Re8 28.Rd3 c4 29.Rh3 Rxe5 30.Qxe5 Re8 31.Qf5 Rxe4 32.Qxe4 c3 33.Kg2 Ba3 34.Rh5 Qg6 35.Qe8+ Qg8 36.Qe2 Qg6 37.Rxb5 Qxf6 38.Qe4 Kg7 39.Rf5 Qg6 40.Qxd4+ Kg8 41.Qxc3 Qxg4+ 42.Qg3 Qxg3+ 43.fxg3 Bb4 44.Kf3 Be1 45.h4 h6 46.h5 Kg7 47.g4 Bb4 48.Ke4 Bd2 49.Rd5 Be1 50.Kf3 Kf6 51.Kf4 Bb4 52.Ke4 Kg7 53.Kf5 Be1 54.Rd7 Bb4 55.Ra7 Bd2 56.Ra8 Bb4 57.Ra6 Bd2 58.Ra7 Bb4 59.Ra8 Be1 60.Rc8 Bb4 61.Rc6 Be7 62.Rc4 Bb4 63.Rc8 Bd2 64.Rc7 Bb4 65.Rc1 Bd2 66.Rd1 Bb4 67.Rd3 Be1 68.Rd5 Bb4 69.Rb5
+- (3.99) Depth: 62/88 01:19:12 167814MN
26.Be4
+- (4.06 ++) Depth: 63/96 02:41:14 344396MN
26.Be4
+- (4.14 ++) Depth: 63/96 03:20:38 429357MN
26.Be4
+- (4.25 ++) Depth: 63/96 03:55:05 503935MN
26.Be4
+- (4.41 ++) Depth: 63/107 04:49:33 622005MN
26.Be4
+- (4.62 ++) Depth: 63/120 05:40:12 732854MN
26.Be4 Qg8 27.g4 Re8 28.Rd3 c4 29.Rh3 Rxe5 30.Qxe5 Re8 31.Qf5 Rxe4 32.Qxe4 c3 33.Kg2 Ba3 34.Rh5 Qg6 35.Qe8+ Qg8 36.Qe2 Qg6 37.Rxb5 Qxf6 38.Qe4 Kg8 39.Rxa5 Bd6 40.Kf1 Bf8 41.Ra4 Qd6 42.Ke2 Bg7 43.Rc4 h6 44.Kd3 Qa6 45.Qf5 Bf8 46.Kxd4 Qa2 47.Ke3 Qxb3 48.Qd3 Qb8 49.h3 Bg7 50.Qd7 Qb6+ 51.Kf3 Qf6+ 52.Ke2 Bf8 53.Qc6 Qe5+ 54.Kf1 c2 55.Rxc2 h5 56.gxh5 Qxh5 57.Rc3 Kh7 58.Rf3 Bd6 59.Qe4+ Kg7 60.h4 Bc7 61.Rf5 Qd1+ 62.Kg2 Qd6 63.Rd5 Qh2+ 64.Kf1 Qh3+ 65.Qg2+ Qxg2+ 66.Kxg2 Bb6 67.Rb5 Bd4 68.Rg5+ Kh6 69.Kg3 Kh7 70.Rd5 Bb6 71.h5 Bc7+ 72.Kf3
+- (4.62) Depth: 63/120 06:18:09 815333MN
26.Be4 Qg8 27.g4 Re8 28.Rd3 c4 29.Rh3 Rxe5 30.Qxe5 Re8 31.Qf5 Rxe4 32.Qxe4 c3 33.Kg2 Ba3 34.Rh5 Qg6 35.Qe8+ Qg8 36.Qe2 Qg6 37.Rxb5 Qxf6 38.Qe4 Kg8 39.Rxa5 Bd6 40.Kf1 Bf8 41.Ra4 Qd6 42.Ke2 Bg7 43.Rc4 h6 44.Kd3 Qa6 45.Qf5 Bf8 46.Kxd4 Qa2 47.Ke3 Qxb3 48.Qd3 Qb8 49.h3 Bg7 50.Qd7 Bf8 51.Rc8 Qe5+ 52.Kf3 Qf6+ 53.Kg2 Kg7 54.Qe8 Qd6 55.Qe4 Be7 56.Rxc3 Bf6 57.Rc8 Qd2 58.Rc5 Qd8 59.Qc6 Bg5 60.Rf5 Qe7 61.Qc3+ Kg8 62.Qe5 Qb7+ 63.Qd5 Qa7 64.Re5 Bh4 65.Qf3 Kg7 66.Rh5 Qe7 67.Ra5 Kh7 68.Ra6 Bg5 69.Ra4 Qe6 70.Qd3+ Kg7 71.Ra6 Qe5 72.Rc6 Qf4 73.Rd6 Kg8
+- (4.62) Depth: 64/102 06:33:51 849711MN
26.Be4
+- (4.70 ++) Depth: 65/96 07:31:42 978891MN
26.Be4
+- (4.77 ++) Depth: 65/96 08:06:05 1053536MN
26.Be4
+- (4.89 ++) Depth: 65/96 08:23:21 1091071MN
26.Be4 Qg8 27.g4 Re8 28.Rd3 Rxe5 29.Qxe5 Re8 30.Qf4 c4 31.Rh3 Rxe4 32.Qxe4 c3 33.Kg2 Ba3 34.Rh5 Qg6 35.Qe8+ Qg8 36.Qe2 Qg6 37.Rxb5 Qxf6 38.Qe4 Kg8 39.Rxa5 Bd6 40.Kf1 Bf8 41.Ra4 Qd6 42.Ke2 Bg7 43.Rc4 h6 44.Kd3 Qa6 45.Qf5 Bf8 46.Kxd4 Qa2 47.Ke3 Qxb3 48.Qd3 Qb8 49.h3 Bg7 50.Qd7 Bf8 51.Rc8 Qe5+ 52.Kf3 Qf6+ 53.Kg2 Kg7 54.Qe8 Qd6 55.Qe4 Be7 56.Rxc3 Bf6 57.Rf3 Bh4 58.Qc4 Qg6 59.Qd5 Bf6 60.Rf5 Bh4 61.Qe5+ Kh7 62.Qd4 Kg8 63.Qf4 Be7 64.Qb8+ Bf8 65.Qa8 Kg7 66.Rb5 Bd6 67.Qf3 Qe6 68.Qa8 Qe2 69.Qd5 Qe8 70.Ra5
+- (4.92) Depth: 65/105 09:32:48 1244409MN
26.Be4 Qg8
+- (4.84 --) Depth: 66/108 10:28:41 1368786MN
26.Be4
+- (4.92 ++) Depth: 66/108 10:33:22 1379231MN
26.g4
+- (5.03 ++) Depth: 66/108 12:47:00 1673097MN
another 12 hours, and you will add another 50cps. :)

maybe it is winning, but it is superfluous to check, when we already know black has much better and a secure draw with Rd5 ed5 Rd1 a4!
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Lyudmil Tsvetkov
Posts: 6052
Joined: Tue Jun 12, 2012 12:41 pm

Re: Old position I posted a while back

Post by Lyudmil Tsvetkov »

Eelco de Groot wrote:
Lyudmil Tsvetkov wrote:
yanquis1972 wrote:it may be a draw, but if i'm reading that output right Bxd5 is preferred
my line starts after Rd5 ed5 Rd1, and now a4 for black instead of d4 or something else.

I thought it was self-explanatory.
That is what Vincent was looking too if I'm not mistaken:
2) after 24.Rxd5 exd5 25.Rd1 a4, 2 best moves mode :
You said 26. bxa4 is forced, but John pointed out that 26. Bxd5 is Matefinder's alternative with a slightly higher score at that point (highest score sorted last, I think that is Arena). I have not analyzed any of the a4 lines.
the line is pretty much straightforward and without possible alternatives.

if you have not analysed it, better not comment. :)

where did Jon pointed this?
I read a single message of his, where he says nothing of the kind.
lines should really transpose.
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Lyudmil Tsvetkov
Posts: 6052
Joined: Tue Jun 12, 2012 12:41 pm

Re: Old position I posted a while back

Post by Lyudmil Tsvetkov »

acase wrote:
Lyudmil Tsvetkov wrote:
a4 is a good find.

I did not see it, not my SF was so kind to point to it.

after a forced line a4 ba4 ba4 Bd5 Qe8 Ba8 Ra8:

[d]r3q2k/5p1p/5P2/2p1B2Q/pb6/6P1/5P1P/3R2K1 w - - 0 6

we get here, which is most certainly a draw

so, probably, unless Andrew finds some improvement for white, the position is a draw, unless Bf4 is stronger and wins, which I don't very much believe.

probably, big white advantage, but still a draw, black just holding.

in the actual game, featuring 2400 elo players(was it correspondence?), black lost in some 6 moves or so... :shock:

seemingly, our forum is much better than those correspondence players.

I think I did did find an improvement (with my computer's assistance of course) in your 25...a4 26.ba4 ba4 27.Bd5 Qe8 28.Ba8 Ra8 line for white, on move 28, how about trying 28. Kg2! instead of 28. Bxa8.
28.Kg2! prevents the black rook on d8 from capturing the white rook on d1 with check and therefore threatens the very nasty 29.Bxf7!


position after 28.Kg2!

[d]r2rq2k/5p1p/5P2/2pBB2Q/pb6/6P1/5PKP/3R4 b - - 0 28


In this postion here is what Stockfish says on my computer so far (again eval is steadily climbing slowly):

New game
r2rq2k/5p1p/5P2/2pBB2Q/pb6/6P1/5PKP/3R4 b - - 0 1

Analysis by Stockfish 190817 64 BMI2:

28...Rab8 29.Bxf7 Qc6+ 30.Bd5 Rxd5 31.Qf3 Rf8 32.Rxd5
+- (3.25) Depth: 7/8 00:00:00 15kN
28...c4 29.Bxf7 Qc6+ 30.Bd5 Rxd5 31.Qf3 h6 32.Rxd5 Rf8
+- (3.25) Depth: 8/9 00:00:00 26kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Ra7 Qg6
+/= (0.62) Depth: 9/14 00:00:00 61kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Qe2 Bf8 35.Rc7 Qg6 36.Qc4
+/- (1.42) Depth: 10/15 00:00:00 77kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5
+- (2.42) Depth: 11/34 00:00:00 341kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3
+- (2.52) Depth: 12/34 00:00:00 428kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Ra7 Kg8 38.Ra4 Qxf3+ 39.Kxf3 Rd5 40.g4 h5 41.Ke4
+- (2.41) Depth: 13/34 00:00:00 533kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Ra7 Kg8 38.Ra4 Qxf3+ 39.Kxf3 Rd5 40.Rg4+ Kf8 41.h4
+- (2.40) Depth: 14/34 00:00:00 629kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.g4 Kh7 41.h4 Ra5 42.Rf5 Ra3 43.h5
+- (2.55) Depth: 15/34 00:00:00 754kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.g4 Kh7 41.h4 Ra5 42.Rf5 Ra3 43.h5 Ra2 44.Rc5
+- (2.55) Depth: 16/34 00:00:00 876kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.g4 Kh7 41.h4 Ra5 42.Rf5 Ra3 43.Kh2 Kg8 44.h5 Ra4 45.f4 Ra2+ 46.Kg1
+- (2.76) Depth: 17/42 00:00:00 1091kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Ra4 Qxf3+ 38.Kxf3 Rd6 39.Rf4 Kh7 40.Rf5 Rd3+ 41.Kg4 Kg6 42.h4 Rd4+ 43.f4
+- (2.34) Depth: 18/42 00:00:00 1551kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kh7 41.Rf5 Ra4 42.Kh3 Ra3 43.Kg4 Rc3 44.Kh5 Ra3 45.g4 Rh3 46.f3 Rg3 47.g5 hxg5 48.hxg5
+- (3.07) Depth: 19/42 00:00:00 1841kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Rb3 43.Kg4 Rb4+ 44.Kh5 Kh7 45.g4 Rb2 46.Rf4 Rd2
+- (3.17) Depth: 20/46 00:00:00 3027kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Rb3 43.Kg4 Rb4+ 44.Kh5 Kh7 45.g4 Rb2 46.Rf4 Rd2 47.g5
+- (3.17) Depth: 21/46 00:00:00 3148kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Rb3 43.Kg4 Rb4+ 44.Kh5 Kh7 45.g4 Rb2 46.Rf4 Rd2 47.g5 hxg5 48.hxg5 Kg8 49.f3
+- (3.17) Depth: 22/46 00:00:00 3240kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Ra4 Qxf3+ 38.Kxf3 Rd6 39.g4 Rxf6+ 40.Rf4 Ra6 41.Rxf7 Ra3+ 42.Kg2 h5 43.g5 Kg8 44.Rf4
+- (2.42) Depth: 23/46 00:00:00 4919kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Ra6 43.Kg4 Kh8 44.f3 Kh7 45.Kh3 Ra1
+- (3.00) Depth: 24/46 00:00:00 5328kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Rb3 43.Kg4 Rb2 44.Kh5 Kh7 45.g4 Rc2 46.Rf4 Re2 47.g5 hxg5 48.hxg5 Kg8 49.Kh6 Re1 50.Rh4
+- (3.07) Depth: 25/56 00:00:00 5971kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rd6 40.Rf4 Ra6 41.Rf5 Ra4 42.h4 Rb4 43.Kh3 Rb3 44.Kg4 Kh7 45.Kh5 Rb2 46.Kg4 Rb7
+- (2.85) Depth: 26/56 00:00:00 8015kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.g4 Kh7 41.h4 Ra5 42.Rf5 Ra3 43.Kh2 Kg8 44.f3 Kh7 45.h5 Kg8 46.f4 Ra2+ 47.Kg1 Ra3 48.Kf1 Ra2 49.g5 hxg5 50.fxg5 Rh2 51.g6 Rh4 52.Ke2
+- (3.25) Depth: 27/56 00:00:00 11416kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra3 42.Kh3 Rb3 43.Kg4 Kh7 44.Kh5 Rb4 45.g4 Rb2
+- (2.69) Depth: 28/56 00:00:00 13751kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.Rf5 Ra4 41.h4 Kh7 42.Kh3 Ra3 43.Kg4 Rb3 44.Kh5 Rb4 45.g4 Rb2 46.g5 hxg5 47.hxg5 Re2
+- (2.42) Depth: 29/56 00:00:00 19334kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rd6 40.Rf4 Ra6 41.g4 Kh7 42.h4 Ra5 43.Rf5 Ra3 44.Rd5 Ra4 45.Kg3 Ra3+ 46.Kf4 Kg6 47.Rf5 Kh7 48.Ke4 Ra4+ 49.Kf3 Rc4 50.Kg3 Rc3+ 51.Kh2 Ra3 52.Kg2 Rb3 53.h5 Kg8 54.f4 Rb2+ 55.Kg3 Rb3+ 56.Kf2 Rb2+ 57.Ke3 Rb6
+- (3.25) Depth: 30/59 00:00:01 30989kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.g4 Ra4+ 45.Kf3 Ra3+ 46.Kf4 Ra4+ 47.Kg3 Ra3+ 48.Rf3 Ra4 49.Rd3 Kh7 50.Rd5 Ra3+ 51.Kf4 Kg6 52.Rf5 Kh7 53.Ke4 Ra4+ 54.Kf3 Rc4
+- (3.25) Depth: 31/59 00:00:01 33039kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.g4 Ra4+ 45.Kf3 Ra3+ 46.Kf4 Ra4+ 47.Kg3 Ra3+ 48.Rf3 Ra5 49.Kh3 Kh7 50.Rf5
+- (3.24) Depth: 32/59 00:00:01 34359kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qb5 36.Qxa3 Qc6 37.Qf3 Rd6 38.Rf4 Qxf3+ 39.Kxf3 Ra6 40.g4 Kg8 41.Kg2 Rb6 42.Kg3 Ra6 43.Kf3 Ra3+ 44.Kg2 Ra6 45.Rf5 Kf8 46.g5 Kg8 47.h4 h6 48.f4 hxg5 49.fxg5 Kh7 50.h5
+- (3.24) Depth: 33/59 00:00:01 36467kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rb5 Ra6 45.Kf5 Ra3 46.f4 Rxg3 47.Rb7 Kg8 48.Rb8+ Kh7 49.Rf8 Ra3 50.Rxf7+ Kg8 51.Rg7+ Kf8
+- (3.17) Depth: 34/59 00:00:01 38972kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rg5 40.Rf4 Rg8 41.h4 Rd8 42.Rf5 Rd4 43.Kf3 Rd3+ 44.Ke4 Ra3 45.Rd5 Ra4+ 46.Kf5 Ra3 47.Kg4 Ra6 48.Rf5 Rd6 49.Kh5 Kh7 50.g4 Rd2 51.g5 hxg5 52.hxg5 Kg8 53.Rf4 Rd3 54.Rc4 Rh3+ 55.Kg4
+- (3.17) Depth: 35/59 00:00:01 39850kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Kh7 49.Rxh5+ Kg6 50.Rg5+ Kxf6 51.h5 Ra4+ 52.Kf3 Ra3+ 53.Kg4 Ra6 54.Rc5 Rb6 55.Ra5 Rb3 56.Rg5
+- (3.25) Depth: 36/59 00:00:01 48773kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Kh7 49.Rxh5+ Kg6 50.Rg5+ Kxf6 51.h5 Ra4+ 52.Kf3 Ra3+ 53.Kg4 Ra6 54.Rc5 Rb6 55.Ra5 Rb3 56.Rg5 Rc3
+- (3.25) Depth: 37/59 00:00:01 50150kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Kh7 49.Rxh5+ Kg6 50.Rg5+ Kxf6 51.h5 Ra4+ 52.Kf3 Ra3+ 53.Kg4 Ra6 54.Rc5 Rb6 55.Ra5 Rb3 56.Rg5 Rc3 57.h6
+- (3.25) Depth: 38/59 00:00:02 62401kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Kh7 49.Rxh5+ Kg6 50.Rg5+ Kxf6 51.h5 Ra4+ 52.Kf3 Ra3+ 53.Kg4 Ra1 54.Rc5 Ra8 55.Rf5+ Kg7 56.Kg5 Rf8 57.Rc5 f6+ 58.Kg4
+- (3.25) Depth: 39/61 00:00:02 67148kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Ra4+ 49.Kf3 Ra3+ 50.Kg2 Kh7 51.Rxh5+ Kg6 52.Rg5+ Kxf6 53.h5 Ra8 54.Kh3 Ke6 55.Kg4 Rc8 56.Re5+ Kf6 57.Rf5+ Ke6 58.Rg5 Rh8 59.Re5+ Kf6 60.Rc5 Ke7
+- (3.25) Depth: 40/65 00:00:02 69477kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Ra4+ 49.Kf3 Ra3+ 50.Kg2 Kh7 51.Rxh5+ Kg6 52.Rg5+ Kxf6 53.h5 Ra8 54.Kh3 Ke6 55.Kg4 Rc8 56.Re5+ Kf6 57.Rf5+ Ke6 58.Rg5 Rh8 59.Re5+ Kf6
+- (3.25) Depth: 41/65 00:00:02 77281kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Ra3 44.Rd5 Ra4+ 45.Ke5 Kg8 46.Kf5 Ra3 47.f4 h5 48.Ke4 Ra4+ 49.Kf3 Ra3+ 50.Kg2 Ra2+ 51.Kh3 Ra6 52.Rxh5 Rxf6 53.Rg5+ Kh7 54.Kg4 Ra6 55.Rc5 Kh6 56.Rc7 Rg6+ 57.Kf3 Kg7 58.g4
+- (3.25) Depth: 42/65 00:00:02 83316kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Rd6 44.g4 Kg8 45.Kf3 Rd3+ 46.Kg2 Kh7 47.h5 Rd2 48.Kf3 Kg8 49.Ke3 Ra2 50.f4 Ra3+ 51.Kd4 Ra4+ 52.Ke5 Ra3 53.Kd5 Ra6 54.Kc4 Rc6+ 55.Kb4 Rd6 56.g5 Kh7
+- (3.25) Depth: 43/65 00:00:03 97251kN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Rd2 44.g4 Rb2 45.f3 Rb4+ 46.Ke3 Rb6 47.h5 Re6+ 48.Kf2 Kg8 49.f4 Ra6 50.Ke3 Ra3+ 51.Kd4 Ra4+ 52.Ke5 Ra7 53.Kd5 Ra6 54.Kc5 Kh7 55.Kb5 Ra3
+- (3.25) Depth: 44/58 00:00:03 126MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rg5 39.Rf4 Rg8 40.h4 Rd8 41.Rf5 Rd4 42.Kf3 Rd3+ 43.Ke4 Rd2 44.g4 Rb2 45.f3 Rb4+ 46.Ke3 Rb6 47.Kf4 Kh7 48.h5 Kg8 49.Ke4 Ra6 50.f4 Ra4+ 51.Ke5 Rc4 52.Kd6 Rd4+ 53.Ke7 Re4+ 54.Re5 Rxf4 55.g5 hxg5 56.Rxg5+ Kh7 57.Kxf7 Ra4 58.Re5 Ra7+ 59.Kf8
+- (3.25) Depth: 45/78 00:00:04 134MN
28...Rxd5
+- (3.17 ++) Depth: 46/67 00:00:06 219MN
28...Rxd5
+- (3.10 ++) Depth: 46/67 00:00:07 260MN
28...Rxd5
+- (2.98 ++) Depth: 46/67 00:00:08 311MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Ra6 40.h4 Kg8 41.Rf5 Ra2 42.Kh3 Ra4 43.g4 Ra3+ 44.f3 Kh7 45.h5 Kg8 46.Kg3 Rd3 47.Kh2 Rd2+ 48.Kh3 Rd3 49.Kh4 Ra3 50.f4 Rf3 51.g5 hxg5+ 52.Rxg5+ Kh8 53.Kg4 Rf1 54.Rc5 Rg1+ 55.Kf5 Rh1 56.Kg5 Kh7
+- (3.25) Depth: 46/67 00:00:09 326MN
28...Rxd5
+- (3.17 ++) Depth: 47/58 00:00:09 328MN
28...Rxd5
+- (3.10 ++) Depth: 47/65 00:00:10 382MN
28...Rxd5
+- (2.98 ++) Depth: 47/65 00:00:11 417MN
28...Rxd5
+- (2.82 ++) Depth: 47/65 00:00:13 506MN
28...Rxd5
+- (2.61 ++) Depth: 47/76 00:00:18 696MN
28...Rxd5 29.Rxd5
+- (3.32 --) Depth: 47/82 00:01:22 3057MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rd6 40.Rf4 Ra6 41.g4 Rb6 42.Rf5 Rb2 43.h4 Kh7 44.Kh2 Rd2 45.Kh3 Rd3+ 46.f3 Ra3 47.Kg3 Ra4 48.Kf2 Ra3 49.Kg2 Ra1 50.h5 Ra2+ 51.Kg3 Kg8 52.f4 Ra3+ 53.Kh2 Ra2+ 54.Kg1 Kh7 55.g5 Kg8 56.Rc5 hxg5 57.fxg5 Kh7 58.Rc7 Kg8
+- (3.32) Depth: 47/82 00:01:46 3944MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rd6 40.Rf4 Ra6 41.g4 Rb6 42.Rf5 Rb2 43.h4 Kh7 44.Kh2 Rd2 45.Kh3 Rd3+ 46.f3 Ra3 47.Kg3 Ra4 48.Kf2 Ra3 49.Kg2 Ra1 50.h5 Ra2+ 51.Kg3 Kg8 52.f4 Ra3+ 53.Kh2 Ra2+ 54.Kg1 Ra3 55.Kf1 Ra4 56.Kg2 Ra2+ 57.Kf3 Ra6 58.Ke4 Ra4+ 59.Ke3 Ra3+ 60.Kd4 Ra4+ 61.Kd5 Ra6 62.Ke5 Ra5+ 63.Kd6 Ra6+ 64.Kd7 Ra7+ 65.Kc6
+- (3.32) Depth: 48/74 00:01:59 4418MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Re4 Qg5 36.Ra4 h6 37.Rxa3 Qd5 38.Qxd5 Rxd5 39.Ra4 Rd6 40.Rf4 Kh7 41.g4 Rb6 42.h4 Rb3 43.Rf3 Rb2 44.Kg3 Kg6 45.h5+ Kh7 46.Rf5 Ra2 47.f3 Kg8 48.f4 Ra3+ 49.Kh2 Ra2+ 50.Kg1 Ra3 51.Kf1 Ra4 52.Kg2 Ra2+ 53.Kf3 Ra6 54.Ke4 Ra4+ 55.Ke3 Ra3+ 56.Kd4 Ra4+ 57.Kd5 Ra6 58.Ke5 Ra5+ 59.Kd6 Ra6+ 60.Kd7 Ra7+ 61.Kd8 Ra2 62.g5 Ra8+ 63.Ke7 Ra7+ 64.Kd6 Ra6+ 65.Kd7 Ra7+ 66.Kc6 Ra4 67.Kb5 Re4
+- (3.32) Depth: 49/79 00:02:13 4930MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Kh7 40.g4 Rb6 41.h4 Rb3 42.Rf3 Rb2 43.Kg3 Ra2 44.Rf5 Ra6 45.Kg2 Ra2 46.Kh3 Ra6 47.Kg3 Kg8 48.g5 Kh7 49.Kg4 Ra2 50.Kh5 Re2 51.gxh6 Kh8 52.Kg5 Rb2 53.Ra5 Kh7 54.Rd5 Ra2 55.Re5 Rc2 56.f4 Rg2+ 57.Kf5 Rb2 58.Re7 Rb5+ 59.Kg4 Kg6 60.Ra7 Rc5 61.f5+ Kxh6 62.Rxf7 Rc4+ 63.Kg3 Rc5 64.Kf4
+- (3.32) Depth: 50/72 00:02:31 5597MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Kh7 40.g4 Rb6 41.h4 Rb3 42.Rf3 Rb2 43.Kg3 Ra2 44.Rf5 Ra6 45.Kg2 Ra2 46.Kh3 Ra6 47.Kg3 Kg8 48.g5 Kh7 49.Re5 Ra2 50.Re8 Ra4 51.f4 Ra1 52.Kg2 Ra6 53.Rf8 hxg5 54.fxg5 Kg6 55.Rg8+ Kh5 56.Rh8+ Kg6 57.Rh6+ Kf5 58.Rh7 Ra2+ 59.Kf3 Ra3+ 60.Kf2 Ra7 61.Rg7 Ra2+ 62.Ke3 Ra3+ 63.Ke2 Ra2+ 64.Kd3 Ra3+ 65.Kc2 Ke6 66.h5 Rg3 67.h6 Rh3
+- (3.32) Depth: 51/79 00:02:52 6401MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra4 Rd6 39.Rf4 Kh7 40.g4 Rb6 41.h4 Rb3 42.Rf3 Rb2 43.Kg3 Ra2 44.Rf5 Ra6 45.Kg2 Ra2 46.Kh3 Ra6 47.Kg3 Kg8 48.g5 Kh7 49.Re5 Ra2 50.Re8 Ra4 51.f4 Ra1 52.Kg2 Ra6 53.Rf8 hxg5 54.fxg5 Kg6 55.Rg8+ Kh5 56.Rh8+ Kg6 57.Rh6+ Kf5 58.Rh7 Ra2+ 59.Kf3 Ra3+ 60.Ke2 Ke6 61.h5 Ra5 62.Rg7 Ra2+ 63.Kf3 Ra3+ 64.Ke4 Ra4+ 65.Ke3 Ra3+ 66.Kd4 Ra4+ 67.Kc3 Rh4
+- (3.32) Depth: 52/79 00:03:02 6779MN
28...Rxd5
+- (3.25 ++) Depth: 53/84 00:03:07 6939MN
28...Rxd5
+- (3.17 ++) Depth: 53/84 00:03:07 6955MN
28...Rxd5
+- (3.06 ++) Depth: 53/84 00:03:12 7157MN
28...Rxd5 29.Rxd5
+- (3.40 --) Depth: 53/91 00:04:59 10992MN
28...Rxd5 29.Rxd5
+- (3.61 --) Depth: 53/91 00:10:39 23225MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra7 Kg8 39.g4 Rd6 40.Ra8+ Kh7 41.Ra5 Kg6 42.Rf5 Rd2 43.Kg3 Kh7 44.f3 Rd1 45.h4 Rg1+ 46.Kf2 Rd1 47.h5 Rd2+ 48.Kg3 Ra2 49.Kf4 Ra6 50.Rc5 Rxf6+ 51.Rf5 Rb6 52.Rxf7+ Kg8 53.Re7 Rb5 54.Ke4 Rg5 55.Re5 Rg7 56.Kf5 Kh7 57.Kf6 Rg8 58.Re7+ Kh8 59.Rd7 Rg5 60.Rd6 Kh7 61.Ke6 Ra5 62.f4 Ra4 63.Rd7+ Kg8 64.Ke5 Rb4 65.Rc7 Rb5+ 66.Kd4 Rb4+ 67.Ke3 Ra4 68.Rc8+ Kh7
+- (3.61) Depth: 53/91 00:12:18 26807MN
28...Rxd5 29.Rxd5
+- (3.69 --) Depth: 54/90 00:17:35 38172MN
28...Rxd5 29.Rxd5
+- (3.76 --) Depth: 54/90 00:19:32 42437MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra7 Kg8 39.g4 Rd6 40.Ra8+ Kh7 41.Ra5 Kg6 42.Rf5 Rd2 43.Kg3 Ra2 44.f3 Ra3 45.h4 Kh7 46.Kh3 Kg6 47.h5+ Kh7 48.Kh2 Ra2+ 49.Kg3 Ra3 50.Re5 Rb3 51.Ra5 Rb6 52.Kf4 Rxf6+ 53.Rf5 Rc6 54.Rxf7+ Kg8 55.Rd7 Rc5 56.Ke4 Rg5 57.Rd5 Rg7 58.Kf5 Re7 59.Kf6 Ra7 60.Re5 Ra1 61.f4 Ra4 62.Kf5 Ra7 63.g5 Rf7+ 64.Kg4 Rc7 65.Re6 hxg5 66.fxg5 Kg7
+- (3.85) Depth: 54/97 00:25:09 54609MN
28...Rxd5 29.Rxd5
+- (3.92 --) Depth: 55/91 00:29:43 64496MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 Rc8 33.Rb7 Rd8 34.Qb3 Rf8 35.Qd5 h6 36.Rd7 Re8 37.Bd6 Bc3 38.Rxf7 Rd8 39.Qh5 Qg5 40.Qf3 a2 41.Qe4 Qg8 42.Rg7 a1Q 43.Rxg8+ Rxg8 44.f7 Bg7 45.fxg8Q+ Kxg8 46.Bxc5 Qf6 47.Be3 Qd6 48.h4 Qf6 49.h5 Kh8 50.g4 Qd6 51.Bf4 Qf6 52.Qe8+ Kh7 53.Kf3 Qc3+ 54.Qe3 Qf6 55.Qe4+ Kh8 56.Kg2 Kg8 57.Kg3 Qc3+ 58.Qe3 Qf6 59.Qd3 Qf7 60.Qe4 Qb3+ 61.Kg2 Qf7 62.Be3 Qd7 63.Qg6 Qd5+ 64.Kg3 Qb3 65.g5 Kh8 66.Qe8+ Qg8 67.Qxg8+ Kxg8
+- (3.96) Depth: 55/93 00:35:03 76113MN
28...Rxd5
+- (3.88 ++) Depth: 56/83 00:35:07 76283MN
28...Rxd5
+- (3.81 ++) Depth: 56/83 00:35:09 76323MN
28...Rxd5
+- (3.70 ++) Depth: 56/83 00:35:10 76366MN
28...Rxd5
+- (3.54 ++) Depth: 56/83 00:35:12 76450MN
28...Rxd5
+- (3.32 ++) Depth: 56/83 00:35:16 76577MN
28...Rxd5
+- (3.03 ++) Depth: 56/83 00:36:45 79738MN
28...Rxd5 29.Rxd5
+- (4.03 --) Depth: 56/100 00:40:23 87594MN
28...Rxd5 29.Rxd5 a3 30.Qf3 Qg8 31.Rd7 Rd8 32.Rc7 c4 33.Rxc4 Qg5 34.Rxb4 Qxe5 35.Ra4 h6 36.Rxa3 Qd5 37.Qxd5 Rxd5 38.Ra7 Kg8 39.g4 Rd6 40.Ra8+ Kh7 41.Ra5 Rxf6 42.Rf5 Rg6 43.Rxf7+ Kg8 44.Rf4 Re6 45.h4 Rb6 46.h5 Rb1 47.Rf5 Kg7 48.Rf3 Rd1 49.Rc3 Rd4 50.Kf3 Rd1 51.Kg3 Rg1+ 52.Kh2 Rf1 53.Kg2 Rd1 54.f4 Rd6 55.Kf3 Rf6 56.Rc7+ Kg8 57.Rc5 Rf7 58.Ke4 Kh7 59.Ke5 Rg7 60.Kf5 Rf7+ 61.Ke4 Rg7 62.Kf3 Rg8 63.Rc3 Rg7 64.Rc6 Rf7 65.Ra6 Kg7 66.Rg6+ Kh7 67.Rc6 Rb7
+- (4.25) Depth: 56/107 00:56:28 122948MN
sorry, will post only somewhat later, unfortunately now have other priorities, but don't believe this could be won.

my SF gives consistent low(less than 100cps) scores here, repeatedly, so there should be a miracle for white to win.

why don't you do a longer run, shortening the horizon after Rd5 Rd5 a3, from here:

[d]r3q2k/5p1p/5P2/2pRB2Q/1b6/p5P1/5PKP/8 w - - 0 3
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Eelco de Groot
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Re: Old position I posted a while back

Post by Eelco de Groot »

Lyudmil Tsvetkov wrote:
Eelco de Groot wrote:
Lyudmil Tsvetkov wrote:
yanquis1972 wrote:it may be a draw, but if i'm reading that output right Bxd5 is preferred
my line starts after Rd5 ed5 Rd1, and now a4 for black instead of d4 or something else.

I thought it was self-explanatory.
That is what Vincent was looking too if I'm not mistaken:
2) after 24.Rxd5 exd5 25.Rd1 a4, 2 best moves mode :
You said 26. bxa4 is forced, but John pointed out that 26. Bxd5 is Matefinder's alternative with a slightly higher score at that point (highest score sorted last, I think that is Arena). I have not analyzed any of the a4 lines.
the line is pretty much straightforward and without possible alternatives.

if you have not analysed it, better not comment. :)

where did Jon pointed this?
I read a single message of his, where he says nothing of the kind.
lines should really transpose.
No, I think you are looking at entirely the wong poster Lyudmil, John Dalhem was pointing out the answer from Vincent Lejeune which I also quoted:

http://www.talkchess.com/forum/viewtopi ... 22&t=64934

I am not commenting on whteher this is a draw or not, because that is beside the point. Just that apparently you don't have to take on a4 with White. At least not immediately. In second line he takes on move 28 all the same. After that the two lines seem to transpose.
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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Eelco de Groot
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Re: Old position I posted a while back

Post by Eelco de Groot »

Lyudmil Tsvetkov wrote:
where is the d4 passed pawn?

it might be winning, but not that easily.
It was gobbled up at move 14. Rxd4 :P
Vincent's a4 line draws by force.
The analysis from Vincent was barely 41 plies, 13:44 minutes. For two best move MultiPV. Vincent's computer is very fast, but that is nothing :P
Maybe about 8 seconds with an 'improved' Stockfish. :P And Andrew also has not yet commented on the a4 line.
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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