Stockfish 18 vs Stockfish 20260510: just 2 positions

[Jouni]

[d]rk1b4/p2p2p1/1P6/2R2P2/8/2K5/8/5B2 w - - 0 1

Stockfish 18:
1.Rd5 Kb7 2.Rd6 Rc8+ 3.Kb3 Bxb6 4.Rxd7+ Rc7 5.Rd6 Rf7 6.Bc4 Re7 7.f6 gxf6 8.Rxf6 Kc7 9.Rf8 Kd6 10.Rf7 Re3+ 11.Kc2 Rg3 12.Bd3 Bd4 13.Be4 Rc3+ 14.Kd2 Ra3 15.Rf5 Be5 16.Rh5 a5 17.Bd3 Kd5 18.Bg6 Kd4 19.Rh4+ Kc5 20.Rg4 a4 21.Bc2 Bc3+ 22.Ke2 Bb4 23.Rg5+ Kc4 24.Bxa4 Rxa4
= (0.00) Depth: 98/88 00:07:08 1468mN, tb=22219185

Stockfish 20260510:
1.Rc8+
+- (1.68 ++) Depth: 59/59 00:00:06 58859kN, tb=63059

[d]1q3k2/1p4pp/pPp3n1/2Pp1pPQ/P2P1P2/7K/3P4/7B w - - 0 1

Stockfish 18:
1.Qxg6
-+ (-3.75 ++) Depth: 36/90 00:05:02 1714mN, tb=299162

Stockfish 20260510:
1.Qxg6 hxg6 2.Kg3 Qe8 3.Kf2 Qe7 4.Bf3 Ke8 5.Bg2 Kd8 6.Bf3 Qe8 7.Bg2 Kd7 8.Bf3 Qh8 9.Kg3 Kc8 10.Bg2 Kb8 11.Kf2
-+ (-2.14) Depth: 22/57 00:00:03 15890kN, tb=446

[peter]

Fist one:

https://www.yacpdb.org/#search/cmsxYjRc ... MS8xLzA=/1

Second one:
[pgn][Event "no ty"]
[Site "; L'Italia Scacchistica#563 1"]
[Date "1936.06.15"]
[Round "?"]
[White "Sacconi=A"]
[Black "(=4013.77h3f8) U2"]
[Result "1/2-1/2"]
[WhiteFideId "-1"]
[BlackFideId "-1"]
[SetUp "1"]
[FEN "1q3k2/1p4pp/pPp3n1/2Pp1pPQ/P2P1P2/7K/3P4/7B w - - 0 1"]
[PlyCount "19"]
[GameId "2308690664821549"]
[EventDate "1936.06.15"]

{source: L'Italia Scacchistica#563 15-6-1936; U2: Campioli=M HHdbIII 23-10-2003} 1. Qxg6 $1 (1. Qxh7 $2 Kf7 2. Kg2 Qxf4 3. Qh3 Qxd2+ 4. Kf1 Qxg5) (1. Qf3 $2 Qxf4 2. Qxf4 Nxf4+ 3. Kg3 Ng6 4. Bg2 Ke7 5. Bf1 Nf8 6. Kf4 g6) 1... hxg6 2. Kg3 Qe8 3. Kf2 $1 Kf7 4. Bf3 (4. Bg2 $1 {<cook MC>}) 4... a5 5. Bg2 (5. d3 $1 {<cook MC>}) 5... Qh8 6. Kg3 Qh5 7. Bf3 Qh8 8. Bg2 (8. d3 $1 {<cook MC>}) 8... Qa8 9. Kf2 $1 (9. d3 $1 {<cook MC>}) 9... Qa6 10. Bf1 1/2-1/2
[/pgn]

In the Sacconi- study Lc0 and Crystal perform quite well too, if you don't insist on 0.00- near eval in small hardware- time, regards

[Uri Blass]

furst position is mate in at most 28 moves
slowchess after some backward analysis

[d]rk1b4/p2p2p1/1P6/2R2P2/8/2K5/8/5B2 w - - 0 1


Slow64-avx2 [001]:

44/70 00:53 251,902k 4,731k +M28 Rc5-c8+ Kb8-b7 Bf1-g2+ Kb7xb6 Rc8xa8 Bd8-e7 Kc3-c4 Be7-g5 Kc4-d5 Kb6-c7 Ra8xa7+ Kc7-d8 Bg2-f1 Kd8-e7 Bf1-b5 Bg5-c1 Bb5xd7 Bc1-b2 Bd7-b5+ Ke7-f6 Bb5-d3 Kf6-g5 Ra7-a4 Kg5-f6 Ra4-g4 Kf6-e7 Rg4-b4 Bb2-c3 Rb4-b6 Ke7-f7 Rb6-e6 Bc3-f6 Kd5-d6 Kf7-g8 Re6-e2 Kg8-f7 Bd3-c4+ Kf7-f8 Re2-e6 Kf8-f7 Re6-e7+ Kf7-f8 Re7-f7+ Kf8-e8 Rf7-b7 Bf6-g5 Rb7-b8+ Bg5-d8 Kd6-e6 g7-g6 f5-f6 g6-g5 Bc4-b5+ Ke8-f8 Rb8xd8+
45/81 01:26 424,992k 4,906k +M28 Rc5-c8+ Kb8-b7 Bf1-g2+ Kb7xb6 Rc8xa8 Bd8-e7 Kc3-c4 Be7-g5 Kc4-d5 Bg5-f6 Ra8-f8 Bf6-a1 Bg2-f1 Ba1-c3 Rf8-f7 d7-d6 Kd5xd6 a7-a5 Rf7-c7 Bc3-e5+ Kd6xe5 Kb6xc7 Ke5-e6 a5-a4 Ke6-f7 a4-a3 Bf1-c4 Kc7-b6 Kf7xg7 Kb6-c5 Bc4-e6 a3-a2 Be6xa2 Kc5-b4 f5-f6 Kb4-a3 f6-f7 Ka3xa2 f7-f8Q Ka2-b3 Kg7-f6 Kb3-c2 Qf8-c5+ Kc2-b3 Kf6-e5 Kb3-b2 Ke5-e4 Kb2-b3 Ke4-d3 Kb3-b2 Qc5-b5+ Kb2-a2 Kd3-c2 Ka2-a3 Qb5-a5+
46/81 01:33 461,781k 4,943k +M28 Rc5-c8+ Kb8-b7 Bf1-g2+ Kb7xb6 Rc8xa8 Bd8-e7 Kc3-c4 Be7-g5 Kc4-d5 Kb6-c7 Ra8xa7+ Kc7-d8 Bg2-f1 Kd8-e7 Bf1-b5 Bg5-c1 Bb5xd7 Bc1-b2 Bd7-b5+ Ke7-f6 Bb5-d3 Kf6-g5 Ra7-a4 Kg5-f6 Ra4-g4 Kf6-e7 Rg4-b4 Bb2-c3 Rb4-b6 Ke7-f7 Rb6-e6 Bc3-f6 Kd5-d6 Kf7-g8 Re6-e2 Kg8-f7 Bd3-c4+ Kf7-f8 Re2-e6 Kf8-f7 Re6-e7+ Kf7-f8 Re7-f7+ Kf8-e8 Rf7-b7 Bf6-g5 Rb7-b8+ Bg5-d8 Kd6-e6 g7-g6 f5-f6 g6-g5 Bc4-b5+ Ke8-f8 Rb8xd8+
47/81 02:33 767,454k 4,994k +M28 Rc5-c8+ Kb8-b7 Bf1-g2+ Kb7xb6 Rc8xa8 Bd8-e7 Kc3-c4 Be7-g5 Kc4-d5 Kb6-c7 Ra8xa7+ Kc7-d8 Bg2-f1 Kd8-e7 Bf1-b5 Bg5-c1 Bb5xd7 Bc1-b2 Bd7-b5+ Ke7-f6 Bb5-d3 Kf6-g5 Ra7-a4 Kg5-f6 Ra4-g4 Kf6-e7 Rg4-b4 Bb2-c3 Rb4-b6 Ke7-f7 Rb6-e6 Bc3-f6 Kd5-d6 Kf7-g8 Re6-e2 Kg8-f7 Bd3-c4+ Kf7-f8 Re2-e6 Kf8-f7 Re6-e7+ Kf7-f8 Re7-f7+ Kf8-e8 Rf7-b7 Bf6-g5 Rb7-b8+ Bg5-d8 Kd6-e6 g7-g6 f5-f6 g6-g5 Bc4-b5+ Ke8-f8 Rb8xd8+
48/81 03:55 1,198,703k 5,098k +M28 Rc5-c8+ Kb8-b7 Bf1-g2+ Kb7xb6 Rc8xa8 Bd8-e7 Kc3-c4 Be7-g5 Kc4-d5 Bg5-f6 Ra8-f8 Bf6-a1 Bg2-f1 Ba1-c3 Rf8-f7 d7-d6 Kd5xd6 a7-a5 Rf7-c7 Bc3-e5+ Kd6xe5 Kb6xc7 Ke5-e6 a5-a4 Bf1-d3 a4-a3 Bd3-b1 Kc7-b6 Ke6-f7 Kb6-a5 Kf7xg7 Ka5-b4 f5-f6 Kb4-b3 f6-f7 a3-a2 Bb1xa2+ Kb3xa2 f7-f8Q Ka2-b3 Kg7-f6 Kb3-c2 Qf8-c5+ Kc2-b3 Kf6-e5 Kb3-b2 Ke5-e4 Kb2-b3 Ke4-d3 Kb3-b2 Qc5-b5+ Kb2-a2 Kd3-c2 Ka2-a3 Qb5-a5+

[Jouni]

This tactical improvement don't give much elo in play . UHO book 60 + 0.6 match.

Code: Select all

                       
1   Stockfish18   +104/=194/-102 50.25%  201.0/400
2   SF20260510    +102/=194/-104 49.75%  199.0/400

[Ajedrecista]

Hello Peter:

Fist one:

https://www.yacpdb.org/#search/cmsxYjRc ... MS8xLzA=/1

Second one:
[pgn][Event "no ty"]
[Site "; L'Italia Scacchistica#563 1"]
[Date "1936.06.15"]
[Round "?"]
[White "Sacconi=A"]
[Black "(=4013.77h3f8) U2"]
[Result "1/2-1/2"]
[WhiteFideId "-1"]
[BlackFideId "-1"]
[SetUp "1"]
[FEN "1q3k2/1p4pp/pPp3n1/2Pp1pPQ/P2P1P2/7K/3P4/7B w - - 0 1"]
[PlyCount "19"]
[GameId "2308690664821549"]
[EventDate "1936.06.15"]

{source: L'Italia Scacchistica#563 15-6-1936; U2: Campioli=M HHdbIII 23-10-2003} 1. Qxg6 $1 (1. Qxh7 $2 Kf7 2. Kg2 Qxf4 3. Qh3 Qxd2+ 4. Kf1 Qxg5) (1. Qf3 $2 Qxf4 2. Qxf4 Nxf4+ 3. Kg3 Ng6 4. Bg2 Ke7 5. Bf1 Nf8 6. Kf4 g6) 1... hxg6 2. Kg3 Qe8 3. Kf2 $1 Kf7 4. Bf3 (4. Bg2 $1 {<cook MC>}) 4... a5 5. Bg2 (5. d3 $1 {<cook MC>}) 5... Qh8 6. Kg3 Qh5 7. Bf3 Qh8 8. Bg2 (8. d3 $1 {<cook MC>}) 8... Qa8 9. Kf2 $1 (9. d3 $1 {<cook MC>}) 9... Qa6 10. Bf1 1/2-1/2
[/pgn]

In the Sacconi- study Lc0 and Crystal perform quite well too, if you don't insist on 0.00- near eval in small hardware- time, regards

Here is my usual historic research:

Kubbel's study from 1936 is at the given source by YACPDB, though I had to dig a bit. The issues from 1932 to 1941 of that magazine can be found here (direct link to the ZIP of 1936 issues here). The study Nº 760 is at issue Nº 3, page 93 (the first study of the page). There is a note 'Dedicated to A. A. Troitsky on his 70th birthday' sharing heading with the study Nº 761 by G. M. Kasparyan (white wins in 8/1p6/8/3R3N/2k4K/p7/p7/1N6 w - - 0 1), but belongs to Kasparyan's study, as seen in the solutions of Nº 760 (Kubbel) and Nº 761 (Kasparyan) at issue Nº 8 of 1936, page 256. Coming back to Kubbel's study, the given solution is 1. Rc8+! Kxc8 2. Ba6+ Kb8 3. b7 (Now Black's pieces are pinned, and White must move his king to d7) Bf6+ 4. Kc4 Bd8 5. Kd5 Be7 6. f6! gxf6 7. Ke4 Bd8 8. Kf5 Be7 9. Kg6 d5 10. Kf7 d4 11. Kxe7 d3 12. Kd7 d2 13. bxa8=Q+ Kxa8 14. Kc8 d1=Q 15. Bb7#. This is my translation from Russian language and Cyrilic alphabet. Please note that the original solution was given without sidelines like YACPDB, only the comment that I copied; and also YACPDB moves are different than the original solution.

I could not find neither old issues of L'Italia Scacchistica magazine, nor Campioli's cooks; although the given source in your PGN is quite precise: straight to the point with the exact date and the number of the study.

Regards from Spain.

Ajedrecista.

[peter]

I could not find neither old issues of L'Italia Scacchistica magazine, nor Campioli's cooks; although the given source in your PGN is quite precise: straight to the point with the exact date and the number of the study.

Hi Jesus!
I just quoted the .pgn from HHdbVII, regards

[fishpov]

Indeed, I put in two fortress tests

[d]2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - 0 1
The answer is instantaneous. Nd6 ! The idea, I think, is to prevent the black bishop to come.

Analysis by Stockfish dev-20260510-dd321af5:

1.Rf3+ Ke6 2.g4 d6 3.Nh6 Rh8 4.Nf7 Rg8 5.Nh6 Rg6 6.Rf8 Kd7 7.f4 Rxh6
Black has a decisive advantage: -+ (-3.26) Depth: 10/23 00:00:00
............
1.Nd6+ exd6 2.Rf3+ Kg4 3.Rg3+ Kf4 4.Rf3+ Kg5 5.Rg3+ Kf6 6.Rf3+ Kg6 7.Rg3+ Kf7 8.Rf3+ Ke7 9.Re3+ Kd8 10.Rxe8+ Kxe8 11.a3 Bb7
Black is winning: -+ (-3.53) Depth: 18/75 00:00:01 6198kN

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

[d]3rr1bk/6np/2p1n3/1pPpNpPp/pP1QpP1P/P2PP3/2K5/B7 w - - 0 1
Not found in 2 hours but I don't have very strong hardware : Intel Core I5 9600K

1. Ng6! hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kxg7 4.d4!

What's interesting is that all the derivative stockfish programs will perhaps inherit fortress detection.
Thank's Jouni for this pleasant surprise

[Ajedrecista]

Hello:

Indeed, I put in two fortress tests

[d]2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - 0 1
The answer is instantaneous. Nd6 ! The idea, I think, is to prevent the black bishop to come.

[...]

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

[d]3rr1bk/6np/2p1n3/1pPpNpPp/pP1QpP1P/P2PP3/2K5/B7 w - - 0 1
Not found in 2 hours but I don't have very strong hardware : Intel Core I5 9600K

1. Ng6! hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kxg7 4.d4!

[...]

The first position is from a problem published in 1923 (YACPDB #544835) with Nf7, Re8 played, but I would say that I have seen more times the position with Nd6+ to be played. I did not know why ..., Rf8 could not be played and SF told me a simple draw: Nf7, Rf8; Rf3+, Kg6; Ne5+, Kg7; Rg3+ (½—½). The escape square f7 for the black king is controlled by Ne5 and with the black rook on the back rank and white pawns on f3 and g3, white can give safe rook checks in f3, g3 and h3. Black's ..., Ke6 is not an option because Rf3+ forces ..., Kg7 or the free R×R without recapture. As a sideline in the given line at YACPDB, if 11.- ..., Re8, the white king must remain on f1, so both 12.- f3 and 12.- g3 are the moves to draw.

It is not the first time that I see the ingenious second position. The oldest thread at TalkChess where I found it is in this post of May, 2020. The test suite that contains the position was posted at RybkaForum on May 6th, 2020, but the origin of the position is unknown for me.

Regards from Spain.

Ajedrecista.

[Jouni]

Second position is found in 1 second by Reckless:

Analysis by Reckless 0.10.0-dev-7300f044:
..
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kxg7 4.d4 Kh7 5.Kb1 Be6 6.Ka1 Rd6 7.Ka2 Kg7 8.Ka1 Bc8 9.Ka2 Kf7 10.Kb1 Ree6
-+ (-3.41) Depth: 18/49 00:00:01 5500kN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kxg7 4.d4 Kh7 5.Kb1 Rd6 6.Ka1 Be6 7.Ka2 Kg8 8.Kb1 Kf7 9.Ka1 Bd7 10.Kb1 Ke7 11.Ka1 Kd8 12.Kb1 Kc8 13.Ka2 Ree6
-+ (-3.50) Depth: 19/49 00:00:01 5741kN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Be6 5.Bf6 Rd7 6.Kb2 Rf7 7.Ka2 Bc8 8.Ka1 Ba6 9.Kb2 Rc7 10.Bd8 Rxd8 11.Kb1 Re8
-+ (-2.95) Depth: 20/49 00:00:01 7358kN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Be6 5.Bh6 Bc8 6.Kb1 Rd7 7.Bg7 Rc7 8.Be5 Rxe5 9.Ka2 Ba6 10.Kb1 Ra7 11.Ka2 Rg7 12.Kb1 Rd7
-+ (-2.46) Depth: 21/49 00:00:01 13398kN
1.Ng6+
-+ (-2.72 ++) Depth: 22/8 00:00:02 13409kN
1.Ng6+
-+ (-2.57 ++) Depth: 22/8 00:00:02 13827kN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Be6 5.Kb2 Kxg7 6.Ka2 Rd7 7.Kb2 Bf7 8.Ka2 Re5 9.Kb1 Kf8 10.Kb2 Rde7 11.Ka2 R7e6
-+ (-2.44) Depth: 22/38 00:00:02 18555kN
1.Ng6+
-+ (-2.52 ++) Depth: 23/8 00:00:02 18698kN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Be6 5.Kb2 Rd7 6.Ka1 Rxg7 7.Ka2 Ra7 8.Kb1 Rb7 9.Ka2 Rd7 10.Ka1 Kg7 11.Kb1 Rde7 12.Kb2 Kh7
-+ (-2.44) Depth: 23/40 00:00:02 20154kN
1.Ng6+
-+ (-2.42 ++) Depth: 24/43 00:00:02 23639kN
1.Ng6+
-+ (-2.29 ++) Depth: 24/50 00:00:03 30108kN
1.Ng6+
-+ (-2.11 ++) Depth: 24/51 00:00:04 42721kN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Rd7 5.Bf6 Be6 6.Be5 Kg8 7.Bb8 Kg7 8.Kb1 Red8 9.Ka2 Kf7 10.Kb2 Ke8 11.Ka2 Bg8 12.Be5
-+ (-1.97) Depth: 24/55 00:00:08 86678kN
1.Ng6+
-+ (-2.15 ++) Depth: 25/8 00:00:08 86812kN
1.Ng6+
-+ (-2.04 ++) Depth: 25/8 00:00:08 86949kN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Rd7 5.Kb2 Be6 6.Bf8 Ra8 7.Bd6 Kg8 8.Be5 Re8 9.Bb8 Red8 10.Bd6 Kf7 11.Ka1 Ke8 12.Be5 Rh7
-+ (-1.97) Depth: 25/49 00:00:08 89856kN
1.Ng6+
-+ (-2.01 ++) Depth: 26/10 00:00:08 95809kN
1.Ng6+
-+ (-1.91 ++) Depth: 26/46 00:00:09 106mN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Be6 5.Kb2 Ra8 6.Ka1 Ra7 7.Be5 Kg8 8.Bd6 Rea8 9.Kb2 Kf7 10.Be5 Rd7 11.Bf6 Rb7 12.Be5 Rba7 13.Bd6
-+ (-1.91) Depth: 26/46 00:00:10 116mN
1.Ng6+
-+ (-1.92 ++) Depth: 27/46 00:00:10 116mN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Be6 5.Kb2 Ra8 6.Ka1 Ra7 7.Be5 Kg8 8.Ka2 Rd8 9.Kb2 Kf7 10.Kb1 Rc8 11.Kb2 Ke8 12.Kb1 Kd8 13.Ka2 Rca8 14.Ka1 Rd7
-+ (-1.91) Depth: 27/49 00:00:10 119mN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Be6 5.Kb2 Ra8 6.Ka1 Ra7 7.Be5 Kg8 8.Ka2 Rea8 9.Kb2 Rd7 10.Kb1 Kf7 11.Kb2 Ke8 12.Ka2 Kd8 13.Kb2 Rh7 14.Bf6+ Kd7 15.Be5 Kc8 16.Ka2 Kb7 17.Ka1
-+ (-1.91) Depth: 28/49 00:00:11 127mN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Be6 5.Kb2 Ra8 6.Ka1 Ra7 7.Be5 Kg8 8.Ka2 Rea8 9.Kb2 Rd7 10.Kb1 Kf8 11.Bd6+ Ke8 12.Kb2 Bg8 13.Ka2 Rh7 14.Kb1 Raa7 15.Ka2 Kd7 16.Kb1 Kc8 17.Ka2 Rad7 18.Be5 Kb7 19.Kb2 Rde7 20.Bf6 Re6 21.Ka1
-+ (-1.91) Depth: 29/49 00:00:17 206mN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Be6 5.Kb2 Ra8 6.Ka1 Ra7 7.Be5 Kg8 8.Ka2 Rd7 9.Kb1 Rb7 10.Kb2 Ra8 11.Kc2 Kf7 12.Kb1 Ke8 13.Kb2 Raa7 14.Ka2 Kd7 15.Ka1 Bg8 16.Kb1 Bh7 17.Kb2 Kc8 18.Kb1 Rf7 19.Ka2 Rae7 20.Ka1 Rxe5
-+ (-1.91) Depth: 30/49 00:00:23 292mN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Be6 5.Kb2 Ra8 6.Ka1 Ra7 7.Be5 Kg8 8.Ka2 Rae7 9.Kb2 Rh7 10.Kb1 Ra8 11.Kb2 Raa7 12.Ka1 Kf7 13.Ka2 Re7 14.Ka1 Ke8 15.Kb2 Bg8 16.Kb1 Rd7 17.Ka2 Ra7 18.Bf6 Kd7 19.Be5 Re7 20.Kb1
-+ (-1.91) Depth: 31/49 00:00:24 311mN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Rd7 5.Kb2 Be6 6.Be5 Kg8 7.Kb1 Ra8 8.Ka2 Rb7 9.Kb2 Rh7 10.Kb1 Raa7 11.Bd6 Kf7 12.Be5 Bc8 13.Ka2 Ke8 14.Kb2 Rae7 15.Ka2 Be6 16.Kb2 Bg8 17.Kb1 Kf7 18.Ka1 Rd7 19.Kb2 Ke8 20.Kb1 Rde7 21.Kb2 Kd7 22.Ka1 Be6
-+ (-1.91) Depth: 32/49 00:00:28 355mN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Rd7 5.Kb2 Be6 6.Be5 Kg8 7.Kb1 Ra8 8.Kc2 Rda7 9.Kd1 Re7 10.Ke1 Rb7 11.Bd6 Rba7 12.Kd2 Rd7 13.Kc1 Ra6 14.Bb8 Ra5 15.Kd2 Raa7 16.Bd6 Rh7 17.Be5 Kf7 18.Bd6 Rd7 19.Kc3 Ke8 20.Kd2 Rb7
-+ (-1.90) Depth: 33/54 00:01:40 1332mN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Rd7 5.Kb2 Be6 6.Be5 Kg8 7.Kb1 Rh7 8.Bd6 Kf7 9.Kc1 Ra8 10.Kd2 Bc8 11.Ke2 Kg8 12.Be5 Raa7 13.Bd6 Be6 14.Be5 Rad7 15.Bd6 Rhg7 16.Be5 Rgf7 17.Bd6 Rb7 18.Kd2 Rbc7 19.Bxc7 Rxc7 20.Kc1 Kg7
-+ (-1.90) Depth: 34/62 00:01:45 1406mN
1.Ng6+ hxg6 2.Qxg7+ Nxg7 3.Bxg7+ Kh7 4.d4 Rd7 5.Kb2 Be6 6.Be5 Kg8 7.Kb1 Rh7 8.Bd6 Kf7 9.Kc1 Ra8 10.Kd2 Bc8 11.Ke2 Kg8 12.Be5 Be6 13.Kd1 Rb7 14.Bf6 Rc7 15.Be5 Re7 16.Ke2 Rg7 17.Bd6 Rb7 18.Kd2 Re8 19.Kc1
-+ (-1.90) Depth: 35/71 00:01:53 1514mN