Chess Engine: Mantissa

Discussion of anything and everything relating to chess playing software and machines.

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jtwright
Posts: 48
Joined: Wed Sep 22, 2021 9:20 pm
Full name: Jeremy Wright

Chess Engine: Mantissa

Post by jtwright »

Hi all, this time trying to make a thread that isn't a specific version number so I can reuse it for future updates and discussion.

I've just prepared a new official release for Mantissa 3.7.2: https://github.com/jtheardw/mantissa/re ... tag/v3.7.2 This is essentially the version that will be playing in TCEC S23 (you can pretty much always check on the version running on TCEC in the `tcec` branch of the repository).

It comes with several minor changes (so no 4.0.0 yet) which add up to a notable difference in strength. Various search improvements, experimenting with SPSA tuning (to some success, but with caveats), continual improvements in the net, and optimizations. The changes are described in a bit more detail in the release, so I won't repeat them here. A large part of the ability to test quicker and generate bigger training sets has been thanks to a large machine fellow engine developer expo_dev built and has been sharing with me, which has been very helpful. Thanks!

SPSA tuning has been a somewhat interesting and frustrating adventure, and I feel like there's so much I still have to learn about it (and of course it comes with many caveats).

On my laptop, I got a self-play Elo difference of ~150 against 3.3.0 in 2 + 1, but I have no idea how well that will translate to playing against a wider pool of opponents.

As always, please let me know if you encounter any trouble with running Mantissa here or in a Github issue. I'm sometimes busy at work or asleep but I try to respond in a timely manner. Thanks everyone!
Gabor Szots
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Full name: Gabor Szots

Re: Chess Engine: Mantissa

Post by Gabor Szots »

Good job, Jeremy. Will be tested soon.
Gabor Szots
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chessica
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Re: Chess Engine: Mantissa

Post by chessica »

[fen]1B3B1B/2B5/p6B/8/8/8/8/1k1K4 w - - 0 1 [/fen]


Critter 1.6a 64-bit:
...
22/41+ 02:20 259.380k 1.845k +22,41 1.Lc7-e5 a6-a5 2.Le5-a1 a5-a4 3.Lf8-g7 Kb1-a2 4.Kd1-c2 a4-a3 5.Kc2-c3 Ka2xa1 6.Kc3-b3+ Ka1-b1 7.Lg7-a1 a3-a2 8.Kb3-c3
22/41 02:21 260.682k 1.847k +M9 1.Lc7-e5 a6-a5 2.Le5-a1 a5-a4 3.Lb8-e5 a4-a3 4.Kd1-d2 Kb1-a2 5.Kd2-c3 Ka2xa1 6.Kc3-b3+ Ka1-b1 ...
29/41 10:11 1.404.597k 2.297k +M9 1.Lc7-e5 a6-a5 2.Le5-a1 a5-a4 3.Lb8-e5 a4-a3 4.Kd1-d2 Kb1-a2 5.Kd2-c3 Ka2xa1 6.Kc3-b3+ Ka1-b1 7.Le5-a1 a3-a2 8.Kb3-c3 Kb1xa1 9.Kc3-c2+

OpenCritter v1.1.37:
...
21/41+ 09:58 592.947k 991k +27,61 1.Lc7-e5 a6-a5
21/41 09:59 594.480k 991k +M9 1.Lc7-e5 a6-a5 2.Le5-a1 Kb1-a2 3.Kd1-c2 a5-a4 4.Lb8-e5 a4-a3 5.Kc2-c3 Ka2xa1 6.Kc3-b3+ Ka1-b1 7.Le5-a1 a3-a2 8.Kb3-c3 Kb1xa1 9.Kc3-c2+
...
24/41 10:40 635.141k 992k +M9 1.Lc7-e5 a6-a5 2.Le5-a1 Kb1-a2 3.Kd1-c2 a5-a4 4.Lb8-e5 a4-a3 5.Kc2-c3 Ka2xa1 6.Kc3-b3+ Ka1-b1 7.Le5-a1 a3-a2 8.Kb3-c3 Kb1xa1 9.Kc3-c2+
25/41 11:48 706.078k 996k +M9 1.Lc7-e5 a6-a5 2.Le5-a1


Mantissa v3.7.2:

34/43 06:40 218.322k 545k +11,22 1.Lh6-c1 Kb1-a2 2.Kd1-c2 a6-a5 3.Lf8-a3 a5-a4 4.Kc2-d2 Ka2-b3 5.Kd2-d3 Kb3-a2 6.Lc7-f4 Ka2-b3 7.Lf4-h6 Kb3-a2 8.Lh8-b2 Ka2-b3 9.Lb8-c7 Kb3-a2 10.Lh6-f4 Ka2-b3 11.Lc7-b8 Kb3-a2 12.Kd3-c3 Ka2-b1 13.Lb8-c7 Kb1-a2 14.Lf4-h6 Ka2-b1 15.Kc3-d3 Kb1-a2
35/23 16:30 536.313k 542k +M9 1.Lc7-e5 Kb1-a2 2.Kd1-c2 a6-a5 3.Le5-a1 a5-a4 4.Lb8-e5 a4-a3 5.Kc2-c3 Ka2xa1 6.Kc3-b3+ Ka1-b1 7.Le5-a1 a3-a2 8.Kb3-c3 Kb1xa1 9.Kc3-c2+
36/25 17:15 561.433k 542k +M9 1.Lc7-e5 Kb1-a2 2.Kd1-c2 a6-a5 3.Le5-a1 a5-a4 4.Lb8-e5 a4-a3 5.Kc2-c3 Ka2xa1 6.Kc3-b3+ Ka1-b1 7.Le5-a1 a3-a2 8.Kb3-c3 Kb1xa1 9.Kc3-c2+
Last edited by chessica on Fri Aug 19, 2022 3:25 pm, edited 1 time in total.
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Ajedrecista
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Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

Re: Chess engine: Mantissa.

Post by Ajedrecista »

Hello:
chessica wrote: Fri Aug 19, 2022 3:20 pm [fen]1B3B1B/2B5/p6B/8/8/8/8/1k1K4 w - - 0 1 [/fen]

[...]
Great problem! It is good that all engines of the previous post passed the test. Jeremy, you can be proud that your engine can solve such an weird problem!

Chest 5.2 also solved it —of course—, but it took longer than I expected:

Code: Select all

FEN: 1B3B1B/2B5/p6B/8/8/8/8/1k1K4 w - - 0 1

ChestUCI:
FEN: 1B3B1B/2B5/p6B/8/8/8/8/1k1K4 w - -   (6+2)
Stellungs-Analyse:  C0/R0/K2/P2/X2   W:6/31
Suche nach Matt in 10 ...  (Hash=64MB)
   9	12:49	 469.633.877	647.181	+M9	Bc7e5
Suche abgeschlossen ...  (Zeit=852.11s)
Matt in 9 gefunden !  (1 Lösung in 14:12)
  9/9	14:14	 551.686.317	647.439	+M9	Bc7e5 a6a5 Be5a1 a5a4 Bb8e5 a4a3 Kd1d2 Kb1a2 Kd2c3 Ka2xa1 Kc3b3+ Ka1b1 Be5a1 a3a2 Kb3c3 Kb1xa1 Kc3c2+
I bring some research on the problem:

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

People can be really creative, so was Troitzky. The problem can be found at both YACPDB and PDB Die Scwalbe database, both of them giving a Czech newspaper written in German as an early source: Bohemia, which has an archive of old issues here.

YACPDB has a typo in the publication date (14-JAN-1915 instead of the correct 24-JAN-1915 given by PDB). The problem was tagged as 'Erstabdruck' (first print) and was stipulated a checkmate in nine moves. It can be found at the top of the page 20 (the third problem, called Capriccio) of the issue No. 24 of Bohemia (24-JAN-1915):

https://www.digitalniknihovna.cz/vkol/v ... b11c419e63

Image

ImageImageImage

Sundays were the 'chess day' for Bohemia. I found the solution published at the middle of the rightmost column of the page 20 of issue No. 114 (25-APR-1915), that is, three months later:

https://www.digitalniknihovna.cz/vkol/v ... b11c419e63

Image

Image
Image
Bohemia wrote:Lösungen.

[...]

Capriccio.
Von A. Troitzky.
Auf den ersten Blick scheint das Problem nicht recht lösbar zu sein, da die fünf gleichfarbigen Läufer nicht sehr zivecsdienlics erscheinen. Doch ijt auch hier, ähnlich wie beim Zweispringermatt, der schwarze Bauer die Ursache des Berlustes.
1. Lc7—e5!
1. ... a5, 2. Le5—a1! a5—a4, 3. Lb8—e5! Drei Läufer in einer Diagonale! 3. ... Ka2 (Wenn dieser Zug früher geschieht, so ändert das nichts ant Lösungs verlauf. Auf 3. ... a3 foigt 4. Kd2 Ka2! 5. Kc3 ustv.), 4. Kc2 a3, 5. Kc3 K✕a1! (Kb1, 6. Kb3, 7. Kc3 und 8. ⧧.), 6. Kb3† Kb1, 7. Le5—a1 a2, 8. Kc3 K✕a1, 9. Kc2⧧.
Gelöft von: W. Michalitschfe in Smichow, A. Pilz in Gablonz.

[...]
Some typos can arise since I do not know German. English translation with Google Translator:
Bohemia wrote:Solutions.

[...]

Capriccio.
By A. Troitzky.
At first glance, the problem does not seem very solvable, since the five bishops of the same color do not seem very useful. But here too, as in the case of two knights mate, the black pawn is the cause of the loss.
1. Bc7—e5!
1. ... a5, 2. Be5—a1! a5—a4, 3. Bb8—e5! Three bishops in one diagonal! 3. ... Ka2 (If this move happens earlier, it does not change the course of the solution. 3. ... a3 is followed by 4. Kd2 Ka2! 5. Kc3 etc.), 4. Kc2 a3, 5. Kc3 K✕a1! (Kb1, 6. Kb3, 7. Kc3 and 8. ⧧.), 6. Kb3† Kb1, 7. Be5—a1 a2, 8. Kc3 K✕a1, 9. Kc2⧧.
Solved by: W. Michalitschfe in Smíchov, A. Pilz in Jablonec.

[...]
Regards from Spain.

Ajedrecista.
jtwright
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Joined: Wed Sep 22, 2021 9:20 pm
Full name: Jeremy Wright

Re: Chess Engine: Mantissa

Post by jtwright »

Thanks for the context. Very wild problem, I've never seen anything like it before. Quite cool.
chessica
Posts: 672
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Full name: Esmeralda Pinto

Re: Chess Engine: Mantissa

Post by chessica »

[fen]8/8/8/3B4/k1KN4/8/8/8 w - - 0 1[/fen]

SugaR AI ICCF 2.30:

with tablebases

...
14/30+ 00:04 3.859k 919k +151,49 1.Sd4-b5
14/39+ 00:04 3.859k 919k +M23 1.Sd4-b5
14/39 00:04 3.873k 919k +M14 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-c4 Ka4-a5 4.Lc4-d3 Ka5-a6 5.Sb5-d6+ Ka6-a5 6.Ld3-c2 Ka5-a6 7.Lc2-a4 Ka6-a7 8.La4-d7 Ka7-a6 9.Ld7-b5+ Ka6-a7 10.Kc5-c6 Ka7-b8 11.Kc6-b6 Kb8-a8 12.Kb6-c7 Ka8-a7 13.Sd6-c8+ Ka7-a8 14.Lb5-c6+
...
25/27 00:46 48.341k 1.040k +M14 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-c4 Ka4-a5 4.Lc4-d3 Ka5-a4 5.Ld3-c2+ Ka4-a5 6.Sb5-d6 Ka5-a6 7.Lc2-a4 Ka6-a5 8.La4-d7 Ka5-a6 9.Ld7-b5+ Ka6-a7 10.Kc5-c6 Ka7-b8 11.Kc6-b6 Kb8-a8 12.Kb6-c7 Ka8-a7 13.Sd6-c8+ Ka7-a8 14.Lb5-c6+
26/27 01:03 67.516k 1.058k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-c4 Ka4-a5 4.Lc4-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-b7+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-c4+ Ka6-a7 10.Sb7-d6 Ka7-a8 11.Lc4-b5 Ka8-a7 12.Sd6-c8+ Ka7-a8 13.Lb5-c6+
27/25 01:39 106.883k 1.075k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-c4 Ka4-a5 4.Lc4-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-b7+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-c4+ Ka6-a7 10.Sb7-d6 Ka7-a8 11.Lc4-b5 Ka8-a7 12.Sd6-c8+ Ka7-a8 13.Lb5-c6+
28/25 02:17 150.026k 1.093k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-c4 Ka4-a5 4.Lc4-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-b7+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-c4+ Ka6-a7 10.Sb7-d6 Ka7-a8 11.Lc4-b5 Ka8-a7 12.Sd6-c8+ Ka7-a8 13.Lb5-c6+
29/25 03:33 235.217k 1.102k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-c4 Ka4-a5 4.Lc4-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-b7+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-c4+ Ka6-a7 10.Sb7-d6 Ka7-a8 11.Lc4-b5 Ka8-a7 12.Sd6-c8+ Ka7-a8 13.Lb5-c6+
30/25 05:02 335.770k 1.110k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-c4 Ka4-a5 4.Lc4-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-b7+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-c4+ Ka6-a7 10.Sb7-d6 Ka7-a8 11.Lc4-b5 Ka8-a7 12.Sd6-c8+ Ka7-a8 13.Lb5-c6+
31/25 06:24 428.538k 1.115k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-c4 Ka4-a5 4.Lc4-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-b7+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-c4+ Ka6-a7 10.Sb7-d6 Ka7-a8 11.Lc4-b5 Ka8-a7 12.Sd6-c8+ Ka7-a8 13.Lb5-c6+
Saved 1 PV and 0 MultiPV entries to experience file: SugaR.exp
Bester Zug: Sd4-b5, Wert: +Matt in 13, Tiefe: 31/25, Dauer: 06:24,338, 428.538.251 Knoten, 1.115 kK/sek

Mantissa v3.7.2:

internal Tablebases, yes or no?
...
1.Sd4-c2 Ka4-a5 2.Ld5-c6 Ka5-b6 3.Kc4-d5 Kb6-c7 4.Sc2-a3 Kc7-b8 5.Kd5-d6 Kb8-c8 6.Sa3-c4 Kc8-d8 7.Sc4-e5 Kd8-c8 8.Lc6-d7+ Kc8-b7 9.Se5-c4 Kb7-b8 10.Kd6-c6 Kb8-a7 11.Sc4-e3 Ka7-a8 12.Kc6-b6 Ka8-b8 13.Se3-f5 Kb8-a8 14.Kb6-c7
27/38 00:18 10.727k 587k +2,94 1.Sd4-c2 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-f7 Ka4-a5 4.Lf7-b3 Ka5-a6 5.Sc2-e3 Ka6-b7 6.Lb3-d5+ Kb7-c7 7.Ld5-g8 Kc7-b8 8.Lg8-e6 Kb8-c7 9.Se3-c2 Kc7-d8 10.Kc5-b6 Kd8-e8 11.Kb6-c7 Ke8-e7 12.Le6-g4 Ke7-e8 13.Sc2-e3 Ke8-e7 14.Lg4-d1 Ke7-f7
28/36 00:20 12.242k 592k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-f7 Ka4-a5 4.Lf7-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-c4+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-a4 Ka6-a7 10.La4-b5 Ka7-a8 11.Sc4-d6 Ka8-a7 12.Sd6-c8+ Ka7-a8 13.Lb5-c6+
29/30 00:25 15.656k 602k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-f7 Ka4-a5 4.Lf7-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-c4+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-a4 Ka6-a7 10.La4-b5 Ka7-a8 11.Sc4-d6 Ka8-a7 12.Sd6-c8+ Ka7-a8 13.Lb5-c6+
30/32 01:02 39.323k 628k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-f7 Ka4-a5 4.Lf7-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-c4+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-a4 Ka6-a7 10.La4-b5 Ka7-a8 11.Sc4-d6 Ka8-a7 12.Sd6-c8+ Ka7-a8 13.Lb5-c6+
31/33 03:26 132.232k 641k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-f7 Ka4-a5 4.Lf7-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-c4+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-a4 Ka6-a7 10.La4-b5 Ka7-a8 11.Sc4-d6 Ka8-a7 12.Sd6-c8+ Ka7-a8 13.Lb5-c6+
Bester Zug: Sd4-b5, Wert: +Matt in 13, Tiefe: 31/33, Dauer: 06:24,323, 132.232.122 Knoten, 641 kK/sek

Colossus 2007b:

Here I have switched off the tablebases.
...
16/27+ 00:13 40.642k 2.959k +M23 1.Sd4-b5
16/27 00:13 41.161k 2.960k +7,82 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-f7 Ka4-a5 4.Lf7-b3 Ka5-a6 5.Lb3-d5 Ka6-a5 6.Ld5-e4 Ka5-a4 7.Le4-c2+ Ka4-a5
17/29+ 00:14 43.666k 2.957k +M26 1.Sd4-b5
17/29 00:15 44.568k 2.956k +7,82 1.Sd4-b5 Ka4-a5 2.Ld5-c6 Ka5-a4 3.Lc6-d7 Ka4-a5 4.Kc4-c5 Ka5-a4 5.Ld7-e6 Ka4-a5 6.Le6-f5 Ka5-a4
17/29 00:20 61.206k 2.945k +7,84 1.Ld5-e6 Ka4-a3 2.Kc4-c3 Ka3-a4 3.Le6-d7+ Ka4-a3 4.Sd4-c2+ Ka3-a2 5.Ld7-e6+ Ka2-b1 6.Sc2-b4 Kb1-c1 7.Sb4-d3+ Kc1-b1 8.Le6-b3 Kb1-a1 9.Kc3-d4 Ka1-b1 10.Kd4-e5 Kb1-a1 11.Lb3-d5 Ka1-b1 12.Ld5-e4
18/31+ 00:22 67.678k 2.944k +M37 1.Ld5-e6
18/31 00:26 78.882k 2.956k +7,82 1.Ld5-e6 Ka4-a3 2.Le6-d7 Ka3-b2 3.Ld7-g4 Kb2-a3 4.Kc4-c3 Ka3-a4 5.Lg4-f3 Ka4-a5 6.Kc3-c4 Ka5-a4 7.Sd4-b5 Ka4-a5 8.Lf3-c6 Ka5-a4
19/32+ 00:44 132.117k 2.948k +M47 1.Ld5-e6
19/32 00:48 143.886k 2.953k +7,82 1.Ld5-e6 Ka4-a3 2.Kc4-c3 Ka3-a4 3.Le6-b3+ Ka4-a5 4.Sd4-e6 Ka5-b5 5.Lb3-d5 Kb5-a4 6.Ld5-c6+ Ka4-a3 7.Se6-c7 Ka3-a2 8.Sc7-b5 Ka2-b1 9.Lc6-e4+ Kb1-c1 10.Le4-f3 Kc1-b1 11.Sb5-a3+ Kb1-c1
19/32 00:50 148.792k 2.956k +M14 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-e6 Ka4-a5 4.Le6-g4 Ka5-a4 5.Lg4-d1+ Ka4-a5 6.Sb5-d6 Ka5-a6 7.Ld1-g4 Ka6-a5 8.Sd6-c4+ Ka5-a6 9.Kc5-c6 Ka6-a7 10.Lg4-c8 Ka7-a8
20/33 01:07 200.046k 2.964k +M14 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-e6 Ka4-a5 4.Le6-g4 Ka5-a4 5.Lg4-d1+ Ka4-a5 6.Sb5-d6 Ka5-a6 7.Ld1-g4 Ka6-a7 8.Kc5-c6 Ka7-a6 9.Sd6-c4 Ka6-a7 10.Lg4-c8 Ka7-a8
21/33 01:29 266.453k 2.971k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-e6 Ka4-a5 4.Le6-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-c4+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-a4 Ka6-a7 10.La4-b5 Ka7-a8 11.Sc4-b6+ Ka8-a7 12.Sb6-c8+ Ka7-a8
22/33 02:02 363.920k 2.981k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-e6 Ka4-a5 4.Le6-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-c4+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-a4 Ka6-a7 10.La4-b5 Ka7-a8 11.Sc4-b6+ Ka8-a7 12.Sb6-c8+ Ka7-a8
23/33 02:51 516.665k 3.006k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-e6 Ka4-a5 4.Le6-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-c4+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-a4 Ka6-a7 10.La4-b5 Ka7-a8 11.Sc4-b6+ Ka8-a7 12.Sb6-c8+ Ka7-a8
24/33 04:03 741.800k 3.046k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-e6 Ka4-a5 4.Le6-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-c4+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-a4 Ka6-a7 10.La4-b5 Ka7-a8 11.Sc4-b6+ Ka8-a7 12.Sb6-c8+ Ka7-a8
25/33 05:45 1.070.612k 3.101k +M13 1.Sd4-b5 Ka4-a5 2.Kc4-c5 Ka5-a4 3.Ld5-e6 Ka4-a5 4.Le6-b3 Ka5-a6 5.Sb5-d6 Ka6-a5 6.Sd6-c4+ Ka5-a6 7.Kc5-c6 Ka6-a7 8.Kc6-c7 Ka7-a6 9.Lb3-a4 Ka6-a7 10.La4-b5 Ka7-a8 11.Sc4-b6+ Ka8-a7 12.Sb6-c8+ Ka7-a8
Bester Zug: Sd4-b5, Wert: +Matt in 13, Tiefe: 25/33, Dauer: 06:24,323, 1.196.824.757 Knoten, 3.114 kK/sek
jtwright
Posts: 48
Joined: Wed Sep 22, 2021 9:20 pm
Full name: Jeremy Wright

Re: Chess Engine: Mantissa

Post by jtwright »

Internal tablebases?
No, Mantissa has no internal tablebases. 3.7.2 also doesn't have Syzygy support, although I have a branch where I'm working on that.
chessica
Posts: 672
Joined: Thu Aug 11, 2022 11:30 pm
Full name: Esmeralda Pinto

Re: Chess Engine: Mantissa

Post by chessica »

Here Mantissa is poking around in the fog. The basic knowledge of the
bishop-knight endgame is not available here.

[pgn][Event "Arena Turnier"]
[Date "2022.08.21"]
[Round "2"]
[White "Mantissa-3.7.2-windows-sse3"]
[Black "Spike 1.4"]
[Result "1/2-1/2"]
[BlackElo "2200"]
[Time "12:03:57"]
[WhiteElo "2200"]
[TimeControl "0+30"]
[SetUp "1"]
[FEN "N6k/8/8/8/8/8/8/K6B w - - 0 1"]
[Termination "normal"]
[PlyCount "100"]
[WhiteType "program"]
[BlackType "program"]

1. Kb2 {(1.Ka1-b2 Kh8-g7 2.Kb2-c3 Kg7-g6 3.Lh1-e4+ Kg6-g5 4.Kc3-d4 Kg5-f6
5.Kd4-d5 Kf6-f7 6.Sa8-b6 Kf7-f6 7.Kd5-d6 Kf6-f7 8.Sb6-c8 Kf7-f6 9.Le4-b1
Kf6-f7 10.Kd6-e5 Kf7-f8 11.Lb1-f5 Kf8-g8 12.Ke5-d4 Kg8-f8 13.Sc8-d6 Kf8-g7
14.Sd6-c4 Kg7-f6 15.Kd4-e4) +1.79/28 30} Kh7 {(1. ... Kh8-h7 2.Sa8-b6
Kh7-g8 3.Sb6-d5 Kg8-h7 4.Lh1-e4+ Kh7-g8 5.Kb2-c3 Kg8-f7 6.Kc3-d4 Kf7-e8
7.Kd4-e5 Ke8-f7 8.Sd5-f4 Kf7-g7 9.Ke5-e6 Kg7-g8 10.Ke6-f6 Kg8-h8 11.Le4-d5
Kh8-h7 12.Sf4-g6 Kh7-h6 13.Ld5-g8 Kh6-h5 14.Sg6-e5 Kh5-h4 15.Lg8-d5 Kh4-g3
16.Se5-d3 Kg3-g4 17.Kf6-g6 Kg4-h4 18.Ld5-f3 Kh4-g3 19.Lf3-h5 Kg3-h4
20.Lh5-e2 Kh4-g3 21.Kg6-h5 Kg3-h3 22.Le2-g4+ Kh3-g3 23.Kh5-g5 Kg3-h2
24.Kg5-h4 Kh2-g2 25.Lg4-e2 Kg2-h1 26.Kh4-g3 Kh1-g1 27.Sd3-f4 Kg1-h1
28.Le2-b5) -M29/58 2} 2. Nb6 {(1.Sa8-b6 Kh7-g8 2.Kb2-c2 Kg8-g7 3.Kc2-d3
Kg7-f8 4.Kd3-d4 Kf8-e7 5.Kd4-e5 Ke7-f7 6.Lh1-d5+ Kf7-e7 7.Sb6-c4 Ke7-d7
8.Ld5-h1 Kd7-e8 9.Ke5-f6 Ke8-d7 10.Kf6-f7 Kd7-d8 11.Kf7-e6 Kd8-c7 12.Ke6-e7
Kc7-b8 13.Ke7-d6 Kb8-c8 14.Lh1-d5 Kc8-d8 15.Ld5-c6 Kd8-c8) +1.81/27 30} Kg8
{(1. ... Kh7-g8 2.Sb6-d5 Kg8-h7 3.Kb2-c3 Kh7-g8 4.Kc3-d4 Kg8-h7 5.Kd4-e5
Kh7-g6 6.Ke5-e6 Kg6-h7 7.Ke6-f6 Kh7-g8 8.Sd5-f4 Kg8-h7 9.Sf4-g6 Kh7-g8
10.Lh1-c6 Kg8-h7 11.Lc6-d5 Kh7-h6 12.Ld5-g8 Kh6-h5 13.Sg6-e5 Kh5-h4
14.Lg8-d5 Kh4-g3 15.Se5-d3 Kg3-g4 16.Kf6-g6 Kg4-h4 17.Ld5-f3 Kh4-g3
18.Lf3-e2 Kg3-h4 19.Kg6-f6 Kh4-g3 20.Kf6-e5 Kg3-h4 21.Ke5-f4 Kh4-h3
22.Sd3-e1 Kh3-h4 23.Se1-g2+ Kh4-h3 24.Kf4-f3 Kh3-h2 25.Sg2-f4 Kh2-g1
26.Kf3-g3 Kg1-h1 27.Le2-a6) -M28/56 1} 3. Kc3 {(1.Kb2-c3 Kg8-f7 2.Kc3-d4
Kf7-e7 3.Kd4-e5 Ke7-f7 4.Sb6-c8 Kf7-e8 5.Lh1-f3 Ke8-d8 6.Sc8-d6 Kd8-e7
7.Lf3-c6 Ke7-f8 8.Lc6-d5 Kf8-g7 9.Sd6-c4 Kg7-f8 10.Ke5-d6 Kf8-e8 11.Sc4-b6
Ke8-f8 12.Sb6-c4) +2.01/27 30} Kh8 {(1. ... Kg8-h8 2.Kc3-d4 Kh8-h7 3.Sb6-d5
Kh7-g6 4.Kd4-e5 Kg6-g7 5.Ke5-e6 Kg7-f8 6.Ke6-f6 Kf8-g8 7.Sd5-f4 Kg8-h7
8.Sf4-g6 Kh7-g8 9.Lh1-c6 Kg8-h7 10.Lc6-d5 Kh7-h6 11.Ld5-g8 Kh6-h5 12.Sg6-e5
Kh5-h4 13.Lg8-d5 Kh4-g3 14.Se5-d3 Kg3-g4 15.Kf6-g6 Kg4-h4 16.Ld5-f3 Kh4-g3
17.Lf3-e2 Kg3-h4 18.Kg6-f6 Kh4-g3 19.Kf6-e5 Kg3-h4 20.Ke5-f4 Kh4-h3
21.Sd3-e1 Kh3-h4 22.Se1-g2+ Kh4-h3 23.Kf4-f3 Kh3-h2 24.Sg2-f4 Kh2-g1
25.Kf3-g3 Kg1-h1 26.Le2-a6) -M27/54 1} 4. Kd4 {(1.Kc3-d4 Kh8-g7 2.Kd4-e5
Kg7-h6 3.Lh1-f3 Kh6-h7 4.Ke5-f6 Kh7-g8 5.Lf3-d5+ Kg8-h7 6.Sb6-c8 Kh7-h6
7.Sc8-d6 Kh6-h5 8.Ld5-f3+ Kh5-h6 9.Sd6-f5+ Kh6-h7 10.Lf3-d5 Kh7-h8
11.Kf6-e5 Kh8-h7 12.Ke5-f4 Kh7-g6 13.Sf5-d6 Kg6-g7 14.Kf4-e4 Kg7-f8
15.Sd6-c4 Kf8-e7 16.Ke4-e5 Ke7-f8 17.Ke5-f6) +2.39/27 30} Kh7 {(1. ...
Kh8-h7 2.Sb6-d5 Kh7-g6 3.Kd4-e5 Kg6-g7 4.Ke5-e6 Kg7-f8 5.Ke6-f6 Kf8-g8
6.Sd5-f4 Kg8-h7 7.Sf4-g6 Kh7-g8 8.Lh1-d5+ Kg8-h7 9.Ld5-e6 Kh7-h6 10.Le6-g8
Kh6-h5 11.Sg6-e5 Kh5-h4 12.Lg8-d5 Kh4-g3 13.Se5-d3 Kg3-g4 14.Kf6-g6 Kg4-h4
15.Ld5-f3 Kh4-g3 16.Lf3-e2 Kg3-h4 17.Kg6-f6 Kh4-g3 18.Kf6-e5 Kg3-h4
19.Ke5-f4 Kh4-h3 20.Sd3-e1 Kh3-h4 21.Se1-g2+ Kh4-h3 22.Kf4-f3 Kh3-h2
23.Sg2-f4 Kh2-g1 24.Kf3-g3 Kg1-h1 25.Le2-a6) -M26/52 1} 5. Ke5 {(1.Kd4-e5
Kh7-g6 2.Lh1-f3 Kg6-g7 3.Lf3-d5 Kg7-h7 4.Ld5-e4+ Kh7-g8 5.Ke5-f6 Kg8-h8
6.Kf6-f5 Kh8-g7 7.Le4-f3 Kg7-h7 8.Kf5-f6 Kh7-g8 9.Kf6-g5 Kg8-f7 10.Kg5-f5
Kf7-g7 11.Kf5-g5 Kg7-f8 12.Kg5-f6 Kf8-e8 13.Sb6-c4 Ke8-d7 14.Lf3-g2 Kd7-e8)
+2.68/27 30} Kg6 {(1. ... Kh7-g6 2.Sb6-d5 Kg6-g7 3.Ke5-e6 Kg7-f8 4.Ke6-f6
Kf8-g8 5.Sd5-f4 Kg8-h7 6.Sf4-g6 Kh7-g8 7.Lh1-d5+ Kg8-h7 8.Ld5-e6 Kh7-h6
9.Le6-g8 Kh6-h5 10.Sg6-e5 Kh5-h4 11.Lg8-d5 Kh4-g3 12.Se5-d3 Kg3-g4
13.Kf6-g6 Kg4-h4 14.Ld5-f3 Kh4-g3 15.Lf3-e2 Kg3-h4 16.Kg6-f6 Kh4-g3
17.Kf6-g5 Kg3-h3 18.Kg5-h5 Kh3-g3 19.Le2-g4 Kg3-h2 20.Kh5-h4 Kh2-g2
21.Lg4-e2 Kg2-h1 22.Kh4-g3 Kh1-g1 23.Sd3-f4 Kg1-h1 24.Le2-a6) -M25/50 1} 6.
Kf4 {(1.Ke5-f4 Kg6-f7 2.Lh1-d5+ Kf7-e7 3.Kf4-e5 Ke7-e8 4.Ke5-f6 Ke8-f8
5.Ld5-c6 Kf8-g8 6.Sb6-c4 Kg8-f8 7.Sc4-e3 Kf8-g8 8.Se3-f5 Kg8-h7 9.Kf6-e5
Kh7-h8 10.Ke5-f4 Kh8-g8 11.Lc6-d5+ Kg8-h8 12.Ld5-e4 Kh8-g8 13.Le4-c6 Kg8-h7
14.Lc6-b5 Kh7-g6 15.Kf4-e5 Kg6-g5 16.Sf5-e3 Kg5-h6 17.Ke5-f5 Kh6-h5)
+2.85/28 30} Kh7 {(1. ... Kg6-h7 2.Lh1-d5 Kh7-g7 3.Kf4-g5 Kg7-h7 4.Kg5-f6
Kh7-h8 5.Ld5-e6 Kh8-h7 6.Sb6-d5 Kh7-h8 7.Sd5-f4 Kh8-h7 8.Sf4-g6 Kh7-h6
9.Le6-g8 Kh6-h5 10.Sg6-e5 Kh5-h4 11.Lg8-d5 Kh4-g3 12.Se5-d3 Kg3-g4
13.Kf6-g6 Kg4-h4 14.Ld5-f3 Kh4-g3 15.Lf3-e2 Kg3-h4 16.Kg6-f6 Kh4-g3
17.Kf6-g5 Kg3-h3 18.Le2-h5 Kh3-g3 19.Lh5-g4 Kg3-h2 20.Kg5-h4 Kh2-g2
21.Lg4-e2 Kg2-h1 22.Kh4-h3 Kh1-g1 23.Kh3-g3 Kg1-h1 24.Sd3-f4) -M25/50 1} 7.
Ba8 {(1.Lh1-a8 Kh7-h6 2.La8-d5 Kh6-g6 3.Sb6-d7 Kg6-h6 4.Ld5-b7 Kh6-g6
5.Lb7-f3 Kg6-h7 6.Kf4-e5 Kh7-g8 7.Ke5-f5 Kg8-g7 8.Lf3-b7 Kg7-h7 9.Lb7-d5
Kh7-h6 10.Kf5-f6 Kh6-h7 11.Kf6-f7 Kh7-h8 12.Ld5-b7 Kh8-h7 13.Kf7-f6 Kh7-g8
14.Lb7-f3 Kg8-h8 15.Sd7-e5 Kh8-g8) +2.94/29 30} Kh8 {(1. ... Kh7-h8
2.Sb6-d5 Kh8-h7 3.Sd5-e7 Kh7-h8 4.Se7-g6+ Kh8-g7 5.Kf4-g5 Kg7-f7 6.La8-d5+
Kf7-g7 7.Ld5-e6 Kg7-h7 8.Kg5-f6 Kh7-h6 9.Le6-g8 Kh6-h5 10.Sg6-e5 Kh5-h4
11.Lg8-d5 Kh4-g3 12.Se5-d3 Kg3-g4 13.Kf6-g6 Kg4-h4 14.Ld5-f3 Kh4-g3
15.Lf3-e2 Kg3-h4 16.Kg6-f6 Kh4-g3 17.Kf6-g5 Kg3-h3 18.Le2-h5 Kh3-g3
19.Lh5-g4 Kg3-h2 20.Kg5-h4 Kh2-g2 21.Lg4-e2 Kg2-h1 22.Kh4-h3 Kh1-g1
23.Kh3-g3 Kg1-h1 24.Sd3-f2+) -M25/50 1} 8. Kf5 {(1.Kf4-f5 Kh8-g8 2.Sb6-c4
Kg8-h7 3.La8-e4 Kh7-g7 4.Kf5-g5 Kg7-f7 5.Le4-d5+ Kf7-e8 6.Kg5-f6 Ke8-d7
7.Ld5-e4 Kd7-c7 8.Kf6-e7 Kc7-c8 9.Le4-c6 Kc8-c7 10.Lc6-b5 Kc7-c8 11.Sc4-b6+
Kc8-b7 12.Sb6-d5 Kb7-b8 13.Ke7-d6 Kb8-c8 14.Lb5-a4 Kc8-b8 15.Kd6-d7 Kb8-b7
16.Kd7-d6 Kb7-c8) +2.94/30 30} Kg7 {(1. ... Kh8-g7 2.Sb6-d5 Kg7-h7 3.Kf5-f6
Kh7-h8 4.Kf6-f7 Kh8-h7 5.Sd5-f4 Kh7-h8 6.Sf4-g6+ Kh8-h7 7.La8-e4 Kh7-h6
8.Sg6-e5 Kh6-g5 9.Se5-d3 Kg5-h5 10.Kf7-f6 Kh5-h6 11.Sd3-e5 Kh6-h5
12.Le4-g6+ Kh5-h4 13.Kf6-f5 Kh4-g3 14.Lg6-h5 Kg3-f2 15.Kf5-f4 Kf2-e1
16.Kf4-e3 Ke1-f1 17.Lh5-f3 Kf1-e1 18.Se5-d3+ Ke1-f1 19.Ke3-f4 Kf1-g1
20.Kf4-g3 Kg1-f1 21.Lf3-h5 Kf1-g1 22.Lh5-e2 Kg1-h1 23.Sd3-f4) -M24/48 1} 9.
Nd5 {(1.Sb6-d5 Kg7-f7 2.La8-c6 Kf7-g8 3.Kf5-g6 Kg8-f8 4.Kg6-f6 Kf8-g8
5.Sd5-e7+ Kg8-h8 6.Lc6-a4 Kh8-h7 7.La4-e8 Kh7-h6 8.Se7-f5+ Kh6-h7 9.Sf5-e3
Kh7-g8 10.Se3-g4 Kg8-f8 11.Le8-h5 Kf8-g8 12.Kf6-g5 Kg8-f8 13.Sg4-f6 Kf8-g7
14.Sf6-g4 Kg7-f8) +2.94/28 30} Kh7 {(1. ... Kg7-h7 2.Kf5-f6 Kh7-h8 3.Kf6-f7
Kh8-h7 4.Sd5-f4 Kh7-h8 5.Sf4-g6+ Kh8-h7 6.La8-e4 Kh7-h6 7.Sg6-e5 Kh6-g5
8.Se5-d3 Kg5-h5 9.Kf7-f6 Kh5-h6 10.Sd3-e5 Kh6-h5 11.Le4-g6+ Kh5-h4
12.Kf6-f5 Kh4-g3 13.Lg6-h5 Kg3-f2 14.Kf5-f4 Kf2-e1 15.Kf4-e3 Ke1-f1
16.Lh5-f3 Kf1-e1 17.Se5-d3+ Ke1-f1 18.Ke3-f4 Kf1-g1 19.Kf4-g3 Kg1-f1
20.Lf3-h5 Kf1-g1 21.Lh5-e2 Kg1-h1 22.Sd3-f4) -M23/46 1} 10. Ke5 {(1.Kf5-e5
Kh7-g6 2.Sd5-b6 Kg6-h6 3.Ke5-f4 Kh6-h5 4.Sb6-d5 Kh5-h4 5.Sd5-f6 Kh4-h3
6.Sf6-e4 Kh3-h4 7.Se4-g3 Kh4-h3 8.Sg3-e2 Kh3-h2 9.La8-f3 Kh2-h3 10.Kf4-f5
Kh3-h2 11.Kf5-e6 Kh2-h3 12.Ke6-f6 Kh3-h2 13.Lf3-e4 Kh2-h3 14.Le4-b7 Kh3-g4
15.Lb7-d5) +2.94/29 30} Kg7 {(1. ... Kh7-g7 2.Sd5-f4 Kg7-f7 3.Ke5-f5 Kf7-e7
4.La8-d5 Ke7-d6 5.Kf5-f6 Kd6-c5 6.Kf6-e5 Kc5-b4 7.Ke5-d4 Kb4-b5 8.Sf4-e6
Kb5-b4 9.Kd4-d3 Kb4-b5 10.Kd3-c3 Kb5-a4 11.Se6-d4 Ka4-a3 12.Sd4-c2+ Ka3-a4
13.Kc3-c4 Ka4-a5 14.Ld5-c6 Ka5-b6 15.Sc2-d4 Kb6-c7 16.Kc4-c5 Kc7-d8
17.Kc5-d6 Kd8-c8 18.Sd4-b3 Kc8-d8 19.Sb3-c5 Kd8-c8 20.Lc6-d7+ Kc8-b8
21.Kd6-c6 Kb8-a7 22.Kc6-c7 Ka7-a8 23.Kc7-b6) -M24/48 1} 11. Bc6 {(1.La8-c6
Kg7-g8 2.Ke5-f5 Kg8-f7 3.Sd5-b6 Kf7-g7 4.Kf5-e5 Kg7-h7 5.Lc6-d5 Kh7-g7
6.Ld5-f3 Kg7-g6 7.Sb6-c4 Kg6-f7 8.Lf3-e4 Kf7-g7 9.Sc4-d6 Kg7-h8 10.Le4-b7
Kh8-g8 11.Sd6-c4 Kg8-f8 12.Sc4-e3 Kf8-g8 13.Se3-f5 Kg8-h7 14.Ke5-f6 Kh7-h8
15.Kf6-f7) +2.90/28 30} Kg6 {(1. ... Kg7-g6 2.Sd5-f4+ Kg6-f7 3.Lc6-d5+
Kf7-g7 4.Ld5-e6 Kg7-h7 5.Ke5-f6 Kh7-h8 6.Le6-d5 Kh8-h7 7.Sf4-g6 Kh7-h6
8.Ld5-g8 Kh6-h5 9.Sg6-e5 Kh5-h4 10.Lg8-d5 Kh4-g3 11.Se5-d3 Kg3-g4 12.Kf6-g6
Kg4-h4 13.Ld5-f3 Kh4-g3 14.Lf3-h5 Kg3-h4 15.Lh5-e2 Kh4-g3 16.Kg6-h5 Kg3-h3
17.Le2-f3 Kh3-g3 18.Lf3-g4 Kg3-h2 19.Kh5-h4 Kh2-g2 20.Lg4-e2 Kg2-h1
21.Kh4-g3 Kh1-g1 22.Sd3-f4 Kg1-h1 23.Le2-d3) -M24/48 1} 12. Nc7 {(1.Sd5-c7
Kg6-h6 2.Sc7-e8 Kh6-g6 3.Lc6-d5 Kg6-h5 4.Ld5-f3+ Kh5-g5 5.Se8-c7 Kg5-h6
6.Sc7-b5 Kh6-g5 7.Sb5-c7) +2.94/26 30} Kg7 {(1. ... Kg6-g7 2.Sc7-b5 Kg7-g6
3.Sb5-d6 Kg6-g7 4.Lc6-e4 Kg7-g8 5.Ke5-f6 Kg8-h8 6.Le4-g6 Kh8-g8 7.Sd6-f7
Kg8-f8 8.Lg6-h7 Kf8-e8 9.Sf7-e5 Ke8-d8 10.Lh7-e4 Kd8-c7 11.Se5-c4 Kc7-d7
12.Kf6-f7 Kd7-d8 13.Le4-c6 Kd8-c7 14.Lc6-e8 Kc7-d8 15.Kf7-f8 Kd8-c7
16.Kf8-e7 Kc7-c8 17.Le8-c6 Kc8-c7 18.Lc6-d7 Kc7-b8 19.Ke7-d8 Kb8-b7
20.Ld7-b5 Kb7-a8 21.Kd8-c7 Ka8-a7 22.Sc4-d6 Ka7-a8 23.Lb5-e2) -M24/48 1}
13. Bf3 {(1.Lc6-f3 Kg7-g8 2.Sc7-e8 Kg8-h7 3.Se8-f6+ Kh7-g6 4.Sf6-d7 Kg6-f7
5.Lf3-e4 Kf7-g8 6.Ke5-f6 Kg8-h8 7.Kf6-e6 Kh8-g7 8.Le4-d3 Kg7-h8 9.Sd7-f6
Kh8-g7 10.Sf6-d7) +2.85/26 30} Kf7 {(1. ... Kg7-f7 2.Lf3-e4 Kf7-g7
3.Sc7-e6+ Kg7-h8 4.Ke5-f6 Kh8-g8 5.Se6-f4 Kg8-h8 6.Le4-d5 Kh8-h7 7.Sf4-g6
Kh7-h6 8.Ld5-g8 Kh6-h5 9.Sg6-e5 Kh5-h4 10.Lg8-d5 Kh4-g3 11.Se5-d3 Kg3-g4
12.Kf6-g6 Kg4-h4 13.Ld5-f3 Kh4-g3 14.Lf3-e2 Kg3-h4 15.Kg6-f6 Kh4-g3
16.Kf6-g5 Kg3-h3 17.Kg5-h5 Kh3-g3 18.Le2-g4 Kg3-h2 19.Kh5-h4 Kh2-g2
20.Lg4-e2 Kg2-h1 21.Kh4-g3 Kh1-g1 22.Sd3-f4 Kg1-h1 23.Le2-a6) -M24/48 1}
14. Ne6 {(1.Sc7-e6 Kf7-g6 2.Lf3-b7 Kg6-h5 3.Ke5-f5 Kh5-h6 4.Kf5-f6 Kh6-h7
5.Se6-f8+ Kh7-g8 6.Sf8-g6 Kg8-h7 7.Lb7-e4 Kh7-h6 8.Le4-b7 Kh6-h7) +2.90/26
30} Kg6 {(1. ... Kf7-g6 2.Lf3-e4+ Kg6-f7 3.Le4-f5 Kf7-e8 4.Se6-g5 Ke8-f8
5.Ke5-f6 Kf8-g8 6.Sg5-f7 Kg8-f8 7.Lf5-h7 Kf8-e8 8.Sf7-e5 Ke8-d8 9.Lh7-e4
Kd8-c7 10.Se5-c4 Kc7-d7 11.Kf6-f7 Kd7-d8 12.Le4-c6 Kd8-c7 13.Lc6-e8 Kc7-d8
14.Kf7-f8 Kd8-c7 15.Kf8-e7 Kc7-c8 16.Le8-c6 Kc8-c7 17.Lc6-d7 Kc7-b8
18.Ke7-d8 Kb8-b7 19.Ld7-b5 Kb7-a8 20.Kd8-c7 Ka8-a7 21.Sc4-d6 Ka7-a8
22.Lb5-f1) -M23/46 1} 15. Bg2 {(1.Lf3-g2 Kg6-f7 2.Se6-d4 Kf7-g8 3.Ke5-f5
Kg8-f7 4.Lg2-d5+ Kf7-g7 5.Ld5-a8 Kg7-h6 6.Kf5-f6 Kh6-h7 7.Sd4-c2 Kh7-h8
8.Kf6-e6 Kh8-g7 9.Ke6-f5 Kg7-f7 10.La8-f3 Kf7-e7 11.Sc2-d4 Ke7-d6 12.Sd4-e6
Kd6-e7 13.Lf3-g2 Ke7-d7 14.Lg2-d5 Kd7-e8 15.Se6-c5 Ke8-f8 16.Kf5-e6 Kf8-g7)
+2.84/26 30} Kh7 {(1. ... Kg6-h7 2.Ke5-f6 Kh7-h8 3.Se6-f8 Kh8-g8 4.Sf8-g6
Kg8-h7 5.Lg2-d5 Kh7-h6 6.Ld5-g8 Kh6-h5 7.Sg6-e5 Kh5-h4 8.Lg8-d5 Kh4-g3
9.Se5-d3 Kg3-g4 10.Kf6-g6 Kg4-h4 11.Ld5-f3 Kh4-g3 12.Lf3-e2 Kg3-h4
13.Kg6-f6 Kh4-g3 14.Kf6-g5 Kg3-h3 15.Kg5-h5 Kh3-g3 16.Le2-g4 Kg3-h2
17.Kh5-h4 Kh2-g2 18.Lg4-e2 Kg2-h1 19.Kh4-g3 Kh1-g1 20.Sd3-f4 Kg1-h1
21.Le2-b5) -M22/44 1} 16. Kf6 {(1.Ke5-f6 Kh7-h6 2.Se6-f4 Kh6-h7 3.Lg2-d5
Kh7-h6 4.Ld5-a2 Kh6-h7 5.Sf4-h3 Kh7-h8 6.La2-c4 Kh8-h7 7.Sh3-f4 Kh7-h6
8.Lc4-a2) +2.81/26 30} Kh8 {(1. ... Kh7-h8 2.Se6-f8 Kh8-g8 3.Sf8-g6 Kg8-h7
4.Lg2-d5 Kh7-h6 5.Ld5-g8 Kh6-h5 6.Sg6-e5 Kh5-h4 7.Lg8-d5 Kh4-g3 8.Se5-d3
Kg3-g4 9.Kf6-g6 Kg4-h4 10.Ld5-f3 Kh4-g3 11.Lf3-e2 Kg3-h4 12.Kg6-f6 Kh4-g3
13.Kf6-g5 Kg3-h3 14.Kg5-f4 Kh3-h4 15.Sd3-e1 Kh4-h3 16.Le2-g4+ Kh3-h2
17.Kf4-f3 Kh2-g1 18.Lg4-h3 Kg1-h2 19.Kf3-g4 Kh2-g1 20.Kg4-g3) -M21/42 1}
17. Be4 {(1.Lg2-e4 Kh8-g8 2.Kf6-g6 Kg8-h8 3.Le4-a8 Kh8-g8 4.Se6-g5 Kg8-f8
5.Kg6-f6 Kf8-g8 6.La8-c6 Kg8-h8 7.Kf6-e6 Kh8-g8 8.Lc6-e4 Kg8-f8 9.Le4-c6
Kf8-g8) +2.90/27 30} Kg8 {(1. ... Kh8-g8 2.Le4-g6 Kg8-h8 3.Se6-g5 Kh8-g8
4.Sg5-f7 Kg8-f8 5.Lg6-h7 Kf8-e8 6.Sf7-e5 Ke8-d8 7.Lh7-e4 Kd8-c7 8.Se5-c4
Kc7-d7 9.Kf6-f7 Kd7-d8 10.Le4-c6 Kd8-c7 11.Lc6-e8 Kc7-d8 12.Kf7-f8 Kd8-c7
13.Kf8-e7 Kc7-c8 14.Le8-c6 Kc8-c7 15.Lc6-d7 Kc7-b8 16.Ke7-d8 Kb8-b7
17.Ld7-b5 Kb7-a8 18.Kd8-c7 Ka8-a7 19.Sc4-d6 Ka7-a8 20.Lb5-f1) -M21/10 0}
18. Bh1 {(1.Le4-h1 Kg8-h8 2.Se6-f4 Kh8-g8 3.Kf6-e5 Kg8-h8 4.Ke5-e6 Kh8-g7
5.Lh1-c6 Kg7-g8 6.Lc6-b7 Kg8-g7 7.Lb7-e4 Kg7-f8 8.Sf4-d5 Kf8-g7 9.Sd5-c3
Kg7-g8 10.Le4-b7 Kg8-g7 11.Lb7-c6 Kg7-f8 12.Sc3-e2 Kf8-g7 13.Se2-f4)
+2.73/27 30} Kh8 {(1. ... Kg8-h8 2.Se6-f8 Kh8-g8 3.Sf8-g6 Kg8-h7 4.Lh1-d5
Kh7-h6 5.Ld5-g8 Kh6-h5 6.Sg6-e5 Kh5-h4 7.Lg8-d5 Kh4-g3 8.Se5-d3 Kg3-g4
9.Kf6-g6 Kg4-h4 10.Ld5-f3 Kh4-g3 11.Lf3-e2 Kg3-h4 12.Le2-d1 Kh4-g3
13.Kg6-h5 Kg3-h3 14.Ld1-e2 Kh3-g3 15.Le2-g4 Kg3-h2 16.Kh5-h4 Kh2-g2
17.Lg4-e2 Kg2-h1 18.Kh4-g3 Kh1-g1 19.Sd3-f4 Kg1-h1 20.Le2-b5) -M21/42 1}
19. Nd8 {(1.Se6-d8 Kh8-h7 2.Lh1-e4+ Kh7-h6 3.Le4-c6 Kh6-h5 4.Lc6-f3+ Kh5-h6
5.Lf3-e2 Kh6-h7 6.Le2-d3+ Kh7-h8 7.Ld3-c4 Kh8-h7 8.Lc4-d3+) +2.92/28 30}
Kg8 {(1. ... Kh8-g8 2.Lh1-d5+ Kg8-h7 3.Sd8-f7 Kh7-g8 4.Ld5-e4 Kg8-f8
5.Le4-h7 Kf8-e8 6.Sf7-e5 Ke8-d8 7.Lh7-e4 Kd8-c7 8.Se5-c4 Kc7-d7 9.Kf6-f7
Kd7-d8 10.Le4-c6 Kd8-c7 11.Lc6-e8 Kc7-d8 12.Kf7-f8 Kd8-c7 13.Kf8-e7 Kc7-c8
14.Le8-b5 Kc8-c7 15.Lb5-d7 Kc7-b8 16.Ke7-d8 Kb8-b7 17.Ld7-b5 Kb7-a8
18.Kd8-c7 Ka8-a7 19.Sc4-d6 Ka7-a8 20.Lb5-e2) -M21/42 1} 20. Bb7 {(1.Lh1-b7
Kg8-f8 2.Sd8-e6+ Kf8-g8 3.Lb7-f3 Kg8-h7 4.Se6-c5 Kh7-h8 5.Lf3-a8 Kh8-h7
6.Kf6-f7 Kh7-h8 7.La8-f3 Kh8-h7 8.Sc5-a4 Kh7-h8 9.Sa4-c5) +2.84/27 30} Kh8
{(1. ... Kg8-h8 2.Lb7-e4 Kh8-g8 3.Sd8-f7 Kg8-f8 4.Le4-h7 Kf8-e8 5.Sf7-e5
Ke8-d8 6.Lh7-e4 Kd8-c7 7.Se5-c4 Kc7-d7 8.Kf6-f7 Kd7-d8 9.Le4-c6 Kd8-c7
10.Lc6-b5 Kc7-d8 11.Lb5-e8 Kd8-c7 12.Kf7-e6 Kc7-d8 13.Le8-d7 Kd8-c7
14.Ke6-e7 Kc7-b8 15.Ke7-d8 Kb8-b7 16.Ld7-b5 Kb7-a8 17.Kd8-c7 Ka8-a7
18.Sc4-d6 Ka7-a8 19.Lb5-e2) -M20/40 1} 21. Kg6 {(1.Kf6-g6 Kh8-g8 2.Sd8-e6
Kg8-h8 3.Lb7-c8 Kh8-g8 4.Lc8-a6 Kg8-h8 5.La6-c4 Kh8-g8 6.Se6-f4+ Kg8-f8
7.Kg6-f6 Kf8-e8 8.Lc4-d5 Ke8-d8 9.Sf4-e6+ Kd8-d7 10.Kf6-e5 Kd7-e7 11.Se6-d4
Ke7-d7 12.Ke5-f6 Kd7-d6 13.Ld5-e4 Kd6-c5 14.Sd4-c2 Kc5-d6 15.Sc2-b4 Kd6-c5
16.Sb4-c2) +2.94/28 30} Kg8 {(1. ... Kh8-g8 2.Sd8-f7 Kg8-f8 3.Kg6-f6 Kf8-g8
4.Lb7-e4 Kg8-f8 5.Le4-h7 Kf8-e8 6.Sf7-e5 Ke8-d8 7.Lh7-e4 Kd8-c7 8.Se5-c4
Kc7-d7 9.Kf6-f7 Kd7-d8 10.Le4-c6 Kd8-c7 11.Lc6-b5 Kc7-d8 12.Lb5-e8 Kd8-c7
13.Kf7-e6 Kc7-d8 14.Le8-d7 Kd8-c7 15.Ke6-e7 Kc7-b8 16.Ke7-d8 Kb8-b7
17.Ld7-b5 Kb7-a8 18.Kd8-c7 Ka8-a7 19.Sc4-d6 Ka7-a8 20.Lb5-e2) -M21/10 0}
22. Bg2 {(1.Lb7-g2 Kg8-f8 2.Kg6-f6 Kf8-e8 3.Sd8-e6 Ke8-d7 4.Lg2-f3 Kd7-d6
5.Lf3-a8 Kd6-d7 6.Kf6-e5 Kd7-e7 7.Se6-g7 Ke7-d7 8.La8-f3 Kd7-c7 9.Sg7-f5
Kc7-b6 10.Lf3-d5 Kb6-c5 11.Ld5-g8 Kc5-c6 12.Lg8-e6 Kc6-c5 13.Ke5-f6 Kc5-b5
14.Sf5-e7 Kb5-c5 15.Se7-g6 Kc5-b4) +2.68/28 30} Kf8 {(1. ... Kg8-f8
2.Kg6-f6 Kf8-g8 3.Lg2-e4 Kg8-h8 4.Le4-f5 Kh8-g8 5.Sd8-f7 Kg8-f8 6.Lf5-h7
Kf8-e8 7.Sf7-e5 Ke8-d8 8.Lh7-e4 Kd8-c7 9.Se5-c4 Kc7-d7 10.Kf6-f7 Kd7-d8
11.Le4-c6 Kd8-c7 12.Lc6-e8 Kc7-d8 13.Kf7-f8 Kd8-c7 14.Kf8-e7 Kc7-c8
15.Le8-c6 Kc8-c7 16.Lc6-d7 Kc7-b8 17.Ke7-d8 Kb8-b7 18.Ld7-b5 Kb7-a8
19.Kd8-c7 Ka8-a7 20.Sc4-d6 Ka7-a8 21.Lb5-c4) -M22/44 1} 23. Bh3 {(1.Lg2-h3
Kf8-e8 2.Sd8-c6 Ke8-f8 3.Lh3-e6 Kf8-e8 4.Kg6-g5 Ke8-f8 5.Kg5-f6 Kf8-e8
6.Sc6-b4 Ke8-d8 7.Le6-f5 Kd8-c7 8.Kf6-e5 Kc7-b6 9.Lf5-d3 Kb6-c7 10.Ld3-c2
Kc7-d8 11.Lc2-d3 Kd8-c7) +2.94/28 30} Kg8 {(1. ... Kf8-g8 2.Lh3-f5 Kg8-f8
3.Kg6-f6 Kf8-g8 4.Sd8-f7 Kg8-f8 5.Lf5-h7 Kf8-e8 6.Sf7-e5 Ke8-d8 7.Lh7-e4
Kd8-c7 8.Se5-c4 Kc7-d7 9.Kf6-f7 Kd7-d8 10.Le4-c6 Kd8-c7 11.Lc6-e8 Kc7-d8
12.Kf7-f8 Kd8-c7 13.Kf8-e7 Kc7-c8 14.Le8-c6 Kc8-c7 15.Lc6-d7 Kc7-b8
16.Ke7-d8 Kb8-b7 17.Ld7-b5 Kb7-a8 18.Kd8-c7 Ka8-a7 19.Sc4-d6 Ka7-a8
20.Lb5-c4) -M21/42 1} 24. Nf7 {(1.Sd8-f7 Kg8-f8 2.Kg6-f6 Kf8-g8 3.Lh3-f5
Kg8-f8 4.Sf7-h6 Kf8-e8 5.Sh6-f7 Ke8-f8) +2.80/27 30} Kf8 {(1. ... Kg8-f8
2.Kg6-f6 Kf8-g8 3.Lh3-f5 Kg8-f8 4.Lf5-h7) -M20/10 0} 25. Kf6 {(1.Kg6-f6
Kf8-e8 2.Sf7-d6+ Ke8-f8 3.Sd6-b5 Kf8-g8 4.Sb5-c3 Kg8-h8 5.Lh3-f5 Kh8-g8
6.Lf5-d3 Kg8-h8 7.Ld3-c4 Kh8-h7 8.Lc4-f7 Kh7-h6 9.Lf7-e8 Kh6-h7 10.Le8-c6
Kh7-g8 11.Sc3-b5 Kg8-h8 12.Kf6-e6 Kh8-g7 13.Lc6-e4 Kg7-f8 14.Le4-h1 Kf8-g8
15.Lh1-e4 Kg8-g7 16.Le4-c6 Kg7-f8) +2.94/28 30} Kg8 {(1. ... Kf8-g8
2.Lh3-f5 Kg8-f8 3.Lf5-h7 Kf8-e8 4.Sf7-e5 Ke8-d8 5.Lh7-e4 Kd8-c7 6.Se5-c4
Kc7-d7 7.Kf6-f7 Kd7-d8 8.Le4-c6 Kd8-c7 9.Lc6-e8 Kc7-d8 10.Kf7-f8 Kd8-c7
11.Kf8-e7 Kc7-c8 12.Le8-c6 Kc8-c7 13.Lc6-d7 Kc7-b8 14.Ke7-d8 Kb8-b7
15.Ld7-b5 Kb7-a8 16.Kd8-c7 Ka8-a7 17.Sc4-d6 Ka7-a8 18.Lb5-c4) -M19/38 1}
26. Nh6+ {(1.Sf7-h6+ Kg8-h7 2.Sh6-f5 Kh7-g8 3.Sf5-e3 Kg8-h7 4.Lh3-g4 Kh7-g8
5.Se3-d5 Kg8-h7 6.Lg4-e2 Kh7-g8 7.Kf6-g6 Kg8-f8 8.Kg6-f6 Kf8-g8) +2.85/27
30} Kh8 {(1. ... Kg8-h8 2.Lh3-d7 Kh8-h7 3.Sh6-f7 Kh7-g8 4.Ld7-f5 Kg8-f8
5.Lf5-h7 Kf8-e8 6.Sf7-e5 Ke8-d8 7.Lh7-e4 Kd8-c7 8.Se5-c4 Kc7-d7 9.Kf6-f7
Kd7-d8 10.Le4-c6 Kd8-c7 11.Lc6-b5 Kc7-d8 12.Kf7-f8 Kd8-c7 13.Kf8-e8 Kc7-c8
14.Lb5-d7+ Kc8-c7 15.Ke8-e7 Kc7-b8 16.Ke7-d8 Kb8-b7 17.Ld7-b5 Kb7-a8
18.Kd8-c7 Ka8-a7 19.Sc4-d6 Ka7-a8 20.Lb5-c4) -M21/42 1} 27. Bg4 {(1.Lh3-g4
Kh8-h7 2.Sh6-f7 Kh7-g8 3.Sf7-d6 Kg8-h8 4.Kf6-g6 Kh8-g8 5.Sd6-b7 Kg8-h8
6.Lg4-d1 Kh8-g8 7.Sb7-d6 Kg8-f8 8.Ld1-g4 Kf8-e7 9.Sd6-b7 Ke7-e8 10.Kg6-f6
Ke8-f8 11.Lg4-h3 Kf8-e8 12.Lh3-e6 Ke8-f8 13.Le6-b3 Kf8-e8 14.Kf6-e5 Ke8-e7
15.Sb7-c5 Ke7-e8) +2.88/28 30} Kh7 {(1. ... Kh8-h7 2.Sh6-f7 Kh7-g8 3.Lg4-f5
Kg8-f8 4.Lf5-h7) -M20/10 0} 28. Nf7 {(1.Sh6-f7 Kh7-g8 2.Sf7-g5 Kg8-f8
3.Sg5-e6+ Kf8-e8 4.Se6-d4 Ke8-f8 5.Lg4-e6 Kf8-e8 6.Le6-f7+ Ke8-d7 7.Kf6-e5
Kd7-c7 8.Ke5-e6 Kc7-c8 9.Ke6-d6 Kc8-b7 10.Lf7-c4 Kb7-c8 11.Lc4-d5 Kc8-b8
12.Ld5-e6 Kb8-b7 13.Sd4-c2 Kb7-b6 14.Le6-d7 Kb6-a7 15.Kd6-e7 Ka7-b8)
+2.73/28 30} Kg8 {(1. ... Kh7-g8 2.Lg4-f5 Kg8-f8 3.Lf5-h7 Kf8-e8 4.Sf7-e5
Ke8-d8 5.Lh7-e4 Kd8-c7 6.Se5-c4 Kc7-d7 7.Kf6-f7 Kd7-d8 8.Le4-c6 Kd8-c7
9.Lc6-b5 Kc7-d8 10.Kf7-f8 Kd8-c7 11.Kf8-e8 Kc7-c8 12.Lb5-d7+ Kc8-c7
13.Ke8-e7 Kc7-b8 14.Ke7-d8 Kb8-b7 15.Ld7-b5 Kb7-a8 16.Kd8-c7 Ka8-a7
17.Sc4-d6 Ka7-a8 18.Lb5-c4) -M19/10 0} 29. Ne5 {(1.Sf7-e5 Kg8-h7 2.Lg4-c8
Kh7-h8 3.Lc8-b7 Kh8-g8 4.Lb7-e4 Kg8-f8 5.Le4-d5 Kf8-e8 6.Ld5-b3 Ke8-d8
7.Se5-c4 Kd8-c8 8.Sc4-a3 Kc8-d8 9.Lb3-f7 Kd8-c8 10.Kf6-e7 Kc8-c7 11.Lf7-a2
Kc7-b7 12.Ke7-d6 Kb7-a6 13.La2-b3 Ka6-b7 14.Lb3-f7 Kb7-c8) +2.94/28 30} Kh8
{(1. ... Kg8-h8 2.Lg4-f5 Kh8-g8 3.Se5-f7 Kg8-f8 4.Lf5-h7 Kf8-e8 5.Sf7-e5
Ke8-d8 6.Lh7-e4 Kd8-c7 7.Se5-c4 Kc7-d7 8.Kf6-f7 Kd7-d8 9.Le4-c6 Kd8-c7
10.Lc6-e8 Kc7-d8 11.Kf7-f8 Kd8-c7 12.Kf8-e7 Kc7-c8 13.Le8-c6 Kc8-c7
14.Lc6-d7 Kc7-b8 15.Ke7-d8 Kb8-b7 16.Ld7-b5 Kb7-a8 17.Kd8-c7 Ka8-a7
18.Sc4-d6 Ka7-a8 19.Lb5-c4) -M20/40 1} 30. Bf5 {(1.Lg4-f5 Kh8-g8 2.Se5-f7
Kg8-f8 3.Lf5-h7 Kf8-e8 4.Kf6-e6 Ke8-f8 5.Sf7-d6 Kf8-g7 6.Lh7-c2 Kg7-h8
7.Sd6-c4 Kh8-g8 8.Lc2-d3 Kg8-f8 9.Sc4-d6 Kf8-g7 10.Sd6-e8+ Kg7-g8 11.Ke6-f6
Kg8-h8 12.Kf6-e5 Kh8-g8 13.Ke5-e6 Kg8-h8 14.Ld3-b5 Kh8-h7 15.Ke6-f5 Kh7-h6
16.Lb5-c4 Kh6-h7) +2.94/27 30} Kg8 {(1. ... Kh8-g8 2.Se5-f7 Kg8-f8 3.Lf5-h7
Kf8-e8 4.Sf7-e5 Ke8-d8 5.Lh7-e4 Kd8-c7 6.Se5-c4 Kc7-d7 7.Kf6-f7 Kd7-d8
8.Le4-c6 Kd8-c7 9.Lc6-e8 Kc7-d8 10.Kf7-f8 Kd8-c7 11.Kf8-e7 Kc7-c8 12.Le8-c6
Kc8-c7 13.Lc6-d7 Kc7-b8 14.Ke7-d8 Kb8-b7 15.Ld7-b5 Kb7-a8 16.Kd8-c7 Ka8-a7
17.Sc4-d6 Ka7-a8 18.Lb5-c4) -M19/10 0} 31. Ng6 {(1.Se5-g6 Kg8-h7 2.Sg6-f8+
Kh7-h6 3.Sf8-h7 Kh6-h5 4.Sh7-g5 Kh5-h4 5.Sg5-e4 Kh4-h5 6.Kf6-e6 Kh5-h4
7.Ke6-e5 Kh4-h5 8.Ke5-f6 Kh5-h6 9.Kf6-f7 Kh6-h5 10.Kf7-f6) +2.94/28 30} Kh7
{(1. ... Kg8-h7 2.Lf5-e6 Kh7-h6 3.Le6-g8 Kh6-h5 4.Sg6-e5 Kh5-h4 5.Lg8-d5
Kh4-g3 6.Se5-d3 Kg3-g4 7.Kf6-g6 Kg4-h4 8.Ld5-f3 Kh4-g3 9.Lf3-e2 Kg3-h4
10.Le2-d1 Kh4-g3 11.Kg6-h5 Kg3-h3 12.Ld1-e2 Kh3-g3 13.Le2-g4 Kg3-h2
14.Kh5-h4 Kh2-g2 15.Lg4-e2 Kg2-h1 16.Kh4-g3 Kh1-g1 17.Sd3-f4 Kg1-h1
18.Le2-b5) -M19/10 0} 32. Nf4+ {(1.Sg6-f4+ Kh7-h8 2.Lf5-d3 Kh8-g8 3.Sf4-g2
Kg8-f8 4.Sg2-e3 Kf8-g8 5.Se3-c2 Kg8-h8 6.Ld3-e4 Kh8-g8 7.Sc2-d4 Kg8-f8
8.Le4-d5 Kf8-e8 9.Kf6-e6 Ke8-d8 10.Ld5-c4 Kd8-c7 11.Lc4-a2 Kc7-b6 12.Sd4-c2
Kb6-c6 13.Sc2-d4+ Kc6-c7 14.La2-d5 Kc7-b6 15.Ld5-b3 Kb6-b7 16.Ke6-d6)
+2.85/28 30} Kh8 {(1. ... Kh7-h8 2.Lf5-e6 Kh8-h7 3.Sf4-g6 Kh7-h6 4.Le6-g8
Kh6-h5 5.Sg6-e5 Kh5-h4 6.Lg8-d5 Kh4-g3 7.Se5-d3 Kg3-g4 8.Kf6-g6 Kg4-h4
9.Ld5-f3 Kh4-g3 10.Lf3-h5 Kg3-h4 11.Lh5-e2 Kh4-g3 12.Kg6-h5 Kg3-h3
13.Le2-f3 Kh3-g3 14.Lf3-g4 Kg3-h2 15.Kh5-h4 Kh2-g2 16.Lg4-e2 Kg2-h1
17.Kh4-g3 Kh1-g1 18.Sd3-f4 Kg1-h1 19.Le2-b5) -M20/40 1} 33. Be4 {(1.Lf5-e4
Kh8-g8 2.Le4-c2 Kg8-h8 3.Lc2-f5 Kh8-g8 4.Sf4-e6 Kg8-h8 5.Kf6-e5 Kh8-g8
6.Lf5-b1 Kg8-f7 7.Se6-c7 Kf7-e7 8.Lb1-c2 Ke7-d7 9.Sc7-d5 Kd7-e8 10.Lc2-d3
Ke8-f8 11.Ld3-b1 Kf8-g7 12.Lb1-e4 Kg7-f7 13.Le4-b1 Kf7-g7) +2.85/28 30} Kg8
{(1. ... Kh8-g8 2.Sf4-g6 Kg8-h7 3.Kf6-f7 Kh7-h6 4.Sg6-e5 Kh6-g5 5.Se5-d3
Kg5-h5 6.Kf7-f6 Kh5-h6 7.Sd3-e5 Kh6-h5 8.Le4-g6+ Kh5-h4 9.Kf6-f5 Kh4-g3
10.Lg6-h5 Kg3-f2 11.Kf5-f4 Kf2-e1 12.Kf4-e3 Ke1-f1 13.Lh5-f3 Kf1-e1
14.Se5-d3+ Ke1-f1 15.Ke3-f4 Kf1-g1 16.Kf4-g3 Kg1-f1 17.Lf3-h5 Kf1-g1
18.Lh5-e2 Kg1-h1) -M20/10 0} 34. Bd5+ {(1.Le4-d5+ Kg8-h7 2.Ld5-h1 Kh7-g8
3.Lh1-b7 Kg8-h8 4.Sf4-g6+ Kh8-g8 5.Lb7-c6 Kg8-h7 6.Lc6-d7 Kh7-h6 7.Sg6-h4
Kh6-h5 8.Sh4-g2 Kh5-h6 9.Ld7-a4 Kh6-h7 10.Sg2-f4 Kh7-g8 11.La4-d7 Kg8-h8
12.Kf6-f7 Kh8-h7 13.Ld7-c8 Kh7-h8 14.Sf4-g2 Kh8-h7 15.Lc8-f5+ Kh7-h8
16.Kf7-f6) +2.70/27 30} Kh8 {(1. ... Kg8-h8 2.Sf4-g6+ Kh8-h7 3.Ld5-e6
Kh7-h6 4.Le6-g8 Kh6-h5 5.Sg6-e5 Kh5-h4 6.Lg8-d5 Kh4-g3 7.Se5-d3 Kg3-g4
8.Kf6-g6 Kg4-h4 9.Ld5-f3 Kh4-g3 10.Lf3-h5 Kg3-h4 11.Lh5-e2 Kh4-g3 12.Kg6-h5
Kg3-h3 13.Le2-f3 Kh3-g3 14.Lf3-g4 Kg3-h2 15.Kh5-h4 Kh2-g2 16.Lg4-e2 Kg2-h1
17.Kh4-g3) -M20/37 30} 35. Kf7 {(1.Kf6-f7 Kh8-h7 2.Ld5-e4+ Kh7-h6 3.Sf4-d3
Kh6-g5 4.Kf7-e6 Kg5-g4 5.Ke6-e5 Kg4-g5 6.Le4-g2 Kg5-h5 7.Ke5-f6 Kh5-g4
8.Lg2-c6 Kg4-h3 9.Kf6-g6 Kh3-g3 10.Kg6-f5 Kg3-h4 11.Lc6-h1 Kh4-h5 12.Lh1-d5
Kh5-h6 13.Ld5-g8 Kh6-h5 14.Lg8-b3 Kh5-h4) +2.79/26 30} Kh7 {(1. ... Kh8-h7
2.Ld5-g2 Kh7-h8 3.Sf4-g6+ Kh8-h7 4.Lg2-e4 Kh7-h6 5.Sg6-e5 Kh6-g5 6.Se5-d3
Kg5-h5 7.Kf7-f6 Kh5-h6 8.Sd3-e5 Kh6-h5 9.Le4-g6+ Kh5-h4 10.Kf6-f5 Kh4-g3
11.Lg6-h5 Kg3-f2 12.Kf5-f4 Kf2-e1 13.Kf4-e3 Ke1-f1 14.Lh5-f3 Kf1-e1
15.Se5-d3+ Ke1-f1 16.Ke3-f4 Kf1-g1) -M21/10 0} 36. Ng2 {(1.Sf4-g2 Kh7-h6
2.Kf7-f6 Kh6-h5 3.Ld5-c4 Kh5-g4 4.Sg2-e3+ Kg4-h3 5.Lc4-e2 Kh3-g3 6.Le2-d1
Kg3-f4 7.Se3-c2 Kf4-g3 8.Kf6-f5 Kg3-f2 9.Kf5-f6 Kf2-g3) +2.72/26 30} Kh8
{(1. ... Kh7-h8 2.Sg2-h4 Kh8-h7 3.Sh4-g6 Kh7-h6 4.Kf7-f6 Kh6-h7 5.Ld5-e6
Kh7-h6 6.Le6-g8 Kh6-h5 7.Sg6-e5 Kh5-h4 8.Lg8-d5 Kh4-g3 9.Se5-d3 Kg3-g4
10.Kf6-g6 Kg4-h4 11.Ld5-f3 Kh4-g3 12.Lf3-h5 Kg3-h4 13.Lh5-e2 Kh4-g3
14.Kg6-h5 Kg3-h3 15.Le2-f3) -M22/33 30} 37. Ne1 {(1.Sg2-e1 Kh8-h7 2.Kf7-f6
Kh7-h6 3.Se1-c2 Kh6-h7 4.Ld5-c4 Kh7-h8 5.Lc4-d5 Kh8-h7) +2.49/27 30} Kh7
{(1. ... Kh8-h7 2.Se1-d3 Kh7-h8 3.Sd3-e5 Kh8-h7 4.Se5-g6) -M23/10 0} 38.
Nf3 {(1.Se1-f3 Kh7-h8 2.Ld5-a8 Kh8-h7 3.La8-c6 Kh7-h8 4.Sf3-d4 Kh8-h7
5.Lc6-d5 Kh7-h8 6.Sd4-e2 Kh8-h7 7.Ld5-e4+ Kh7-h6 8.Kf7-f6 Kh6-h5 9.Kf6-f7
Kh5-g5 10.Kf7-e6 Kg5-h5 11.Ke6-f6 Kh5-h6 12.Le4-d5 Kh6-h7 13.Kf6-g5)
+2.39/24 30} Kh8 {(1. ... Kh7-h8 2.Sf3-e5 Kh8-h7 3.Kf7-f6 Kh7-h8 4.Ld5-e4
Kh8-g8 5.Se5-f7 Kg8-f8 6.Le4-h7 Kf8-e8 7.Sf7-e5 Ke8-d8 8.Lh7-e4 Kd8-c7
9.Se5-c4 Kc7-d7 10.Kf6-f7 Kd7-d8 11.Le4-c6 Kd8-c7 12.Lc6-e8 Kc7-d8
13.Kf7-f8) -M22/29 29} 39. Ne5 {(1.Sf3-e5 Kh8-h7 2.Ld5-f3 Kh7-h6 3.Kf7-f6
Kh6-h7 4.Se5-c6 Kh7-h6 5.Sc6-d4 Kh6-h7 6.Sd4-b5 Kh7-g8 7.Lf3-e4 Kg8-f8
8.Le4-d5 Kf8-e8 9.Ld5-e6 Ke8-f8 10.Sb5-c3 Kf8-e8 11.Sc3-d5 Ke8-f8 12.Sd5-e3
Kf8-e8) +0.76/24 30} Kh7 {(1. ... Kh8-h7 2.Se5-g6 Kh7-h6 3.Kf7-f6 Kh6-h7
4.Ld5-f7 Kh7-h6 5.Lf7-g8 Kh6-h5 6.Sg6-e5 Kh5-h4 7.Kf6-f5 Kh4-g3 8.Se5-g4
Kg3-g2 9.Lg8-c4 Kg2-f3 10.Lc4-b5 Kf3-g3 11.Kf5-g5) -M21/10 0} 40. Bg2
{(1.Ld5-g2 Kh7-h6 2.Kf7-f6 Kh6-h5 3.Lg2-a8 Kh5-h4 4.La8-f3 Kh4-h3 5.Lf3-b7
Kh3-g3 6.Kf6-g5 Kg3-f2 7.Kg5-f4 Kf2-e2 8.Lb7-c6 Ke2-d2 9.Kf4-g4 Kd2-c3
10.Lc6-e4 Kc3-d4 11.Kg4-g3 Kd4xe4) +0.89/22 30} Kh8 {(1. ... Kh7-h8
2.Kf7-f8 Kh8-h7 3.Lg2-e4+ Kh7-h6 4.Se5-f3 Kh6-h5 5.Le4-f5 Kh5-h6 6.Kf8-f7
Kh6-h5 7.Kf7-f6 Kh5-h6 8.Sf3-e5 Kh6-h5 9.Lf5-g6+ Kh5-h4 10.Kf6-f5 Kh4-g3
11.Lg6-h5 Kg3-f2) -M21/25 30} 41. Kf6 {(1.Kf7-f6 Kh8-g8 2.Se5-f7 Kg8-f8
3.Sf7-h8 Kf8-e8 4.Lg2-c6+ Ke8-d8 5.Lc6-a4 Kd8-c8 6.La4-b3 Kc8-d8 7.Lb3-c4
Kd8-c7 8.Kf6-e5 Kc7-c6 9.Lc4-e2 Kc6-c5 10.Le2-f1 Kc5-c6) +0.45/21 30} Kh7
{(1. ... Kh8-h7 2.Lg2-d5 Kh7-h8 3.Ld5-e6 Kh8-h7 4.Se5-g6 Kh7-h6 5.Le6-g8
Kh6-h5 6.Sg6-e5 Kh5-h4 7.Lg8-b3 Kh4-g3 8.Kf6-f5 Kg3-f2 9.Se5-c4 Kf2-e1
10.Kf5-f4) -M22/23 30} 42. Ng6 {(1.Se5-g6 Kh7-g8 2.Lg2-f3 Kg8-h7 3.Kf6-f7
Kh7-h6 4.Lf3-c6 Kh6-h7 5.Lc6-g2 Kh7-h6 6.Lg2-f3 Kh6-h7 7.Lf3-e4 Kh7-h6
8.Kf7-e6 Kh6-h7 9.Ke6-f7) 0.00/23 30} Kh6 {(1. ... Kh7-h6 2.Sg6-f8 Kh6-h5
3.Lg2-e4 Kh5-g4 4.Sf8-e6 Kg4-g3 5.Kf6-f5 Kg3-f2 6.Se6-d4 Kf2-e3 7.Sd4-b3
Ke3-f2 8.Kf5-f4 Kf2-e2 9.Le4-c2) -M20/21 30} 43. Bf3 {(1.Lg2-f3 Kh6-h7
2.Sg6-e5 Kh7-h6 3.Se5-f7+ Kh6-h7 4.Lf3-e2 Kh7-g8 5.Sf7-g5 Kg8-h8 6.Le2-d3
Kh8-g8 7.Sg5-e6 Kg8-h8 8.Se6-f8 Kh8-g8) 0.00/42 30} Kh7 {(1. ... Kh6-h7
2.Lf3-e2 Kh7-h6 3.Le2-c4 Kh6-h5 4.Lc4-e6) -M21/10 0} 44. Kg5 {(1.Kf6-g5
Kh7-g7 2.Kg5-h5 Kg7-f6 3.Lf3-g4 Kf6-g7 4.Lg4-f3) 0.00/50 30} Kg7 {(1. ...
Kh7-g7 2.Lf3-e2 Kg7-f7 3.Le2-c4+ Kf7-e8 4.Kg5-f6 Ke8-d8 5.Kf6-e5 Kd8-c7
6.Sg6-f4 Kc7-c6 7.Lc4-b3) -M23/17 30} 45. Kh5 {(1.Kg5-h5 Kg7-f7 2.Lf3-b7
Kf7-f6 3.Sg6-f4 Kf6-f5 4.Sf4-g6 Kf5-f6) 0.00/64 16} Kf6 {(1. ... Kg7-f6
2.Lf3-b7 Kf6-g7 3.Sg6-f4 Kg7-h8 4.Kh5-h6 Kh8-g8 5.Lb7-d5+ Kg8-f8) -20.44/17
30} 46. Bb7 {(1.Lf3-b7 Kf6-g7 2.Kh5-g5 Kg7-g8 3.Sg6-h8 Kg8-g7 4.Sh8-g6)
0.00/64 1} Ke6 {(1. ... Kf6-e6 2.Kh5-g5 Ke6-d6 3.Kg5-f6 Kd6-c5 4.Kf6-e5
Kc5-b4 5.Ke5-d4 Kb4-a5) 0.00/24 1} 47. Nh8 {(1.Sg6-h8 Ke6-f6 2.Sh8-g6)
0.00/64 1} Kf6 {(1. ... Ke6-f6 2.Lb7-e4 Kf6-e6 3.Kh5-h6 Ke6-e5 4.Le4-b1
Ke5-d6) 0.00/20 0} 48. Ng6 {(1.Sh8-g6) 0.00/64 0} Ke6 {(1. ... Kf6-e6)
0.00/10 0} 49. Kh6 {(1.Kh5-h6 Ke6-f7 2.Kh6-g5 Kf7-g8) 0.00/64 1} Kd6 {(1.
... Ke6-d6 2.Kh6-h5 Kd6-c7) 0.00/12 0} 50. Kg7 {(1.Kh6-g7 Kd6-c5) 0.00/64
1} Ke6 {(1. ... Kd6-e6) 0.00/10 0 50-Züge-Regel} 1/2-1/2[/pgn]