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Old September 5th 07, 03:27 PM posted to rec.games.chess.computer
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Default Engine Breaking Positions

There has been previous discussion of positions where different
engines give radically different results. I stumbled upon the
following position playing against Shredder10. And the post game
analysis was bizarre. I have never seen such huge values for the fail
high/fail low conditions before - the most extreme value seen was
briefly -#331.

5r2/2R2p1k/p2p3p/2PPb3/4Pq2/5P2/P1Q4P/7K b - - 0 34

The test was done with 96MB of cache allocated, but other values gave
similar results. The position with black (me winning) to move is not
far from a forced mating line, but Shredder cannot find it even when
run overnight. The top ten moves preferred by each engine seem to shed
some light on their internal workings.

Shredder 10 ply 20/58 (8 hours)

Rg8 Bd4 Kh8 Qxf3+ Qe3 dxc5 Rb8 Qh4 Qg5 a5
-#127 -#150 -#176 -#184 -#186 -#202 -#209 -#277 -17.89 -10.36

Rybka 2.3.2 did a lot better solved in 1m and in under 1h had at ply
17

Rg8 Rb8 dxc5 Bd4 Kh8 Qh4 Rd8 Rc8 Ra8 Rh8 h5
-#7 -#8 -#10 -#13 -#17 -#18 -9.78 -9.78 -9.78 -9.78
-8.96
(then insanely slow because of Chessbase bug for ply mate in N)

Fritz 8 solved in 5m and in 1h had at ply 15

Rg8 Rb8 Bd4 Qh4 dxc5 Kh8 Rd8 Qe3 Qxf3+ h5 Re8
-#11 -#13 -#16 -#21 -29.87 -17.75 -14.93 -13.53 -9.56 -7.00
-6.65

Crafty 19.19 solved in 20s and in 4h had at ply 13

Rg8 Rb8 dc5 Qh4 Bd4 Kh8 a5 h5 Re8 Rd8 Qxf3+
-#7 -#8 -#10 -21.6 -15.15 -8.38 -8.24 -7.96 -7.90 -7.90 -6.64

I believe the shortest route to mate is something along the lines of

34. .... Rg8
35. Rxf7+ QxR
36. Qg2 Qf4
37. QxR+ KxQ
38. Kg1 Qxh2+
39. Kf1 Bg3
40. cxd6 Qf2# (=7 moves, 13 ply)

34. .... Rb8 lets the white king go walkabout. I think making it =9
moves 17ply

The behaviour of Shredder 10 seems most odd on this position.
Anyone care to test the same position against a few other strong
engines?

Regards,
Martin Brown

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Old September 5th 07, 09:18 PM posted to rec.games.chess.computer
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Default Engine Breaking Positions

On Wed, 05 Sep 2007 07:27:32 -0700, Martin Brown
wrote:


The behaviour of Shredder 10 seems most odd on this position.
Anyone care to test the same position against a few other strong
engines?

Regards,
Martin Brown


I ran this position through the mate solver Chest UCI 4.1, and it
confirmed your Rg8 as the only move that mates in 7.

FEN: 5r2/2R2p1k/p2p3p/2PPb3/4Pq2/5P2/P1Q4P/7K b - - 0 34

ChestUCI Ver.4.1:
FEN: 5r2/2R2p1k/p2p3p/2PPb3/4Pq2/5P2/P1Q4P/7K b - -
Suche nach Matt in 10 ... (Hash=64MB)
7 00:08 2.081.254 300.715 +M7 Rf8g8
Suche abgeschlossen ... (Zeit=11.69s)
Matt in 7 gefunden ! (1 Lösung in 00:11)
7/7 00:11 3.419.901 292.624 +M7 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g1 Qf4xh2+ Kg1f1 Be5g3 f3f4 Qh2f2+


The strong freeware engine Spike solved it in an instant, though it
gives a different mating line than Chest does:
FEN: 5r2/2R2p1k/p2p3p/2PPb3/4Pq2/5P2/P1Q4P/7K b - - 0 34

Spike 1.2 Turin:
0 00:00 0 0 +2.30
1 00:00 228 0 +3.67 Qf4xf3+ Qc2g2
1 00:00 263 0 +3.67 Qf4xf3+ Qc2g2
2 00:00 360 0 +3.67 Qf4xf3+ Qc2g2 Qf3d1+
Qg2g1 Qd1f3+ Qg1g2
2 00:00 572 0 +7.31 Rf8g8 Rc7xf7+ Qf4xf7
2 00:00 726 0 +7.31 Rf8g8 Rc7xf7+ Qf4xf7
3 00:00 920 0 +7.97 Rf8g8 Rc7xf7+ Qf4xf7
Qc2e2 d6xc5
3 00:00 1.796 0 +7.97 Rf8g8 Rc7xf7+ Qf4xf7
Qc2e2 d6xc5
4 00:00 2.208 0 +7.97 Rf8g8 Rc7xf7+ Qf4xf7
Qc2e2 d6xc5
4 00:00 2.921 0 +7.97 Rf8g8 Rc7xf7+ Qf4xf7
Qc2e2 d6xc5
5+ 00:00 4.081 0 +8.29 Rf8g8 Rc7xf7+ Qf4xf7
Qc2e2 Qf7f4
5+ 00:00 4.081 0 +8.29 Rf8g8 Rc7xf7+ Qf4xf7
Qc2e2 Qf7f4
5 00:00 4.865 0 +8.43 Rf8g8 Rc7xf7+ Qf4xf7
Qc2b3 d6xc5 d5d6
5 00:00 9.068 604.533 +8.43 Rf8g8 Rc7xf7+ Qf4xf7
Qc2b3 d6xc5 d5d6
6+ 00:00 12.256 817.066 +8.74 Rf8g8 Rc7xf7+ Qf4xf7
Qc2b3 Qf7f4 Qb3b7+ Kh7g6
6+ 00:00 12.256 817.066 +8.74 Rf8g8 Rc7xf7+ Qf4xf7
Qc2b3 Qf7f4 Qb3b7+ Kh7g6
6+ 00:00 14.318 954.533 +10.75 Rf8g8 Rc7xf7+ Qf4xf7
Qc2b3 Qf7f4 Qb3b7+ Kh7h8
6+ 00:00 14.318 954.533 +10.75 Rf8g8 Rc7xf7+ Qf4xf7
Qc2b3 Qf7f4 Qb3b7+ Kh7h8
6 00:00 19.626 633.096 +12.85 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 c5xd6 Qf4xf3+ Kh1g1 Qf3xe4
6 00:00 23.706 764.709 +12.85 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 c5xd6 Qf4xf3+ Kh1g1 Qf3xe4
7 00:00 26.585 565.638 +13.68 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g2 Qf4xh2+ Kg2f1 d6xc5
7 00:00 32.918 700.382 +13.68 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g2 Qf4xh2+ Kg2f1 d6xc5
8- 00:00 37.388 603.032 +13.35 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g2 Qf4xh2+ Kg2f1 d6xc5
8- 00:00 98.507 703.621 +13.38 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g2 Qf4xh2+ Kg2f1 d6xc5
8 00:00 99.771 639.557 +13.68 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g2 Qf4xh2+ Kg2f1 d6xc5
8 00:00 99.803 639.762 +13.68 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g2 Qf4xh2+ Kg2f1 d6xc5
9+ 00:00 101.524 650.794 +14.01 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g2 Qf4xh2+ Kg2f1 Be5g3
9+ 00:00 101.524 650.794 +14.01 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g2 Qf4xh2+ Kg2f1 Be5g3
9 00:00 114.415 665.203 +14.49 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xf3+ Kh1g1 Qf3xg3+ Kg1f1
9 00:00 163.871 700.303 +14.49 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xf3+ Kh1g1 Qf3xg3+ Kg1f1
10+ 00:00 165.370 661.480 +14.79 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xf3+ Kh1g1 Qf3xg3+ Kg1f1 d6xc5
10+ 00:00 165.370 661.480 +14.79 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xf3+ Kh1g1 Qf3xg3+ Kg1f1 d6xc5
10+ 00:00 190.949 679.533 +16.80 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xg3 c5xd6 Qg3h2+
10+ 00:00 190.949 679.533 +16.80 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xg3 c5xd6 Qg3h2+
10 00:00 224.692 685.036 +M7 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xg3 f3f4 Qg3h3+ Kh1g1 Be5d4+

Toga II 1.3X4 also solved it very quickly, giving the same mating line
as Spike, and only having to go to ply 7 to do it:
FEN: 5r2/2R2p1k/p2p3p/2PPb3/4Pq2/5P2/P1Q4P/7K b - - 0 34

Toga II 1.3x4:
1/11 00:00 182 0 +2.05 d6xc5 Rc7xc5 Qf4xf3+
Qc2g2 Qf3d1+ Qg2g1
1/11 00:00 279 0 +2.47 Qf4xf3+ Qc2g2 Qf3d1+
Qg2g1
2/11 00:00 1.092 0 +2.47 Qf4xf3+ Qc2g2 Qf3d1+
Qg2g1
2/12 00:00 1.825 0 +2.63 d6xc5 Rc7b7 Qf4xf3+
Qc2g2 Qf3d1+ Qg2g1
2/13 00:00 2.284 0 +6.25 Rf8g8 Rc7xf7+ Qf4xf7
Qc2d3
3/17 00:00 11.203 0 +6.54 Rf8g8 Rc7xf7+ Qf4xf7
Qc2d3 d6xc5 a2a3
4/18+ 00:00 18.014 0 +11.35 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g2 Qf4xh2+ Kg2f1 d6xc5
5/20 00:00 21.966 0 +11.59 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g2 d6xc5 a2a3 Qf4xh2+ Kg2f1
6/23+ 00:00 36.733 0 +13.09 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xf3+ Kh1g1 Qf3xg3+ Kg1f1 Qg3f3+
Kf1g1 Qf3xe4 c5xd6 Be5xd6
7/26+ 00:00 56.270 0 +M7 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xg3 f3f4 Qg3h3+ Kh1g1 Be5d4+


I ran my tests on a dual Turion 1.6 GHz laptop.

Tony
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Old September 6th 07, 12:29 PM posted to rec.games.chess.computer
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Default Engine Breaking Positions

On Sep 5, 9:18 pm, Tony M wrote:
On Wed, 05 Sep 2007 07:27:32 -0700, Martin Brown

wrote:

The behaviour of Shredder 10 seems most odd on this position.


I ran this position through the mate solver Chest UCI 4.1, and it
confirmed your Rg8 as the only move that mates in 7.

FEN: 5r2/2R2p1k/p2p3p/2PPb3/4Pq2/5P2/P1Q4P/7K b - - 0 34

ChestUCI Ver.4.1:
Suche abgeschlossen ... (Zeit=11.69s)
Matt in 7 gefunden ! (1 Lösung in 00:11)
7/7 00:11 3.419.901 292.624 +M7 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2xg8+ Kh7xg8 Kh1g1 Qf4xh2+ Kg1f1 Be5g3 f3f4 Qh2f2+


Thanks for this. Same line as I found. That is encouraging.
Where do I get ChestUCI 4.1 from please? Google only found Chest 3.19

The strong freeware engine Spike solved it in an instant, though it
gives a different mating line than Chest does:
FEN: 5r2/2R2p1k/p2p3p/2PPb3/4Pq2/5P2/P1Q4P/7K b - - 0 34
10 00:00 224.692 685.036 +M7 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xg3 f3f4 Qg3h3+ Kh1g1 Be5d4+


What does it say for the other top 5 or 10 moves?

Toga II 1.3X4 also solved it very quickly, giving the same mating line
as Spike, and only having to go to ply 7 to do it:
7/26+ 00:00 56.270 0 +M7 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xg3 f3f4 Qg3h3+ Kh1g1 Be5d4+


I have since run the same test on 2 more engines.

HIARCS10 which had after 1h at ply 15

Rg8 Bd4 Rb8 dxc5 Kh8 Qxf3+ Qh4 Qe3 Re8
-#7 -#9 -#10 -#11 -#14 -#15 -#17 -20.71 -10.91

This looks pretty impressive. Can anyone with a good mate searching
engine confirm these?
It took a mere 3s to find the main line mate in 7.

Junior 7 which reached ply 15 only finding Rg8 -#7 and Rb8 -#8 it also
completely locked up the machine whilst considering 34. .... Kg7
making no further progress at all running overnight.

Regards,
Martin Brown




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Old September 6th 07, 03:04 PM posted to rec.games.chess.computer
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Default Engine Breaking Positions

On Sep 6, 12:29 pm, Martin Brown
wrote:

HIARCS10 which had after 1h at ply 15

Rg8 Bd4 Rb8 dxc5 Kh8 Qxf3+ Qh4 Qe3 Re8
-#7 -#9 -#10 -#11 -#14 -#15 -#17 -20.71 -10.91

This looks pretty impressive. Can anyone with a good mate searching
engine confirm these?
It took a mere 3s to find the main line mate in 7.


With a bit of human guidance I think I have a solution for Qe3 -#22

The line running along something like:

34. ... Qe3
35. Qd1 dxc5 (or Qf2)
36. Qg1 Qxf3+ (or Qe2)
37. Qg2 Qd1+
38. Qg1 Qe2
39. Qg2 Qe1+
40. Qg1 Qxe4 etc.

Seems that most of whites replies here are forced so it is a bit
surprising the engines cannot grok this one using singular extensions.

Regards,
Martin Brown

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Old September 6th 07, 08:50 PM posted to rec.games.chess.computer
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Default Engine Breaking Positions

On Thu, 06 Sep 2007 04:29:37 -0700, Martin Brown
wrote:


Thanks for this. Same line as I found. That is encouraging.
Where do I get ChestUCI 4.1 from please? Google only found Chest 3.19


Hi Martin.

Actually, 4.1 is an older version as well. Version 4.4a is the most
recent, and can be found at:

http://www.geocities.com/fhub55/

Chest UCI is essentially the same as 3.19, but with a UCI interface
tacked on by Franz Huber.


The strong freeware engine Spike solved it in an instant, though it
gives a different mating line than Chest does:
FEN: 5r2/2R2p1k/p2p3p/2PPb3/4Pq2/5P2/P1Q4P/7K b - - 0 34
10 00:00 224.692 685.036 +M7 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xg3 f3f4 Qg3h3+ Kh1g1 Be5d4+


What does it say for the other top 5 or 10 moves?


Spike 1.2 (http://spike.lazypics.de/dl_index_en.html):
15 10:44 485.597.785 754.436 +M7 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xg3 f3f4 Qg3h3+ Kh1g1 Be5d4+
15 10:44 485.597.785 754.436 +M8 Rf8b8 Rc7xf7+ Qf4xf7
Kh1g2 Qf7f4 Kg2f2 Qf4xh2+ Kf2e3 Qh2xc2 f3f4 Qc2c3+ Ke3f2 Rb8b2+ Kf2g1
Qc3c1+
15 10:44 485.597.785 754.436 +M8 Be5d4 h2h4 Kh7h8
Rc7xf7 Rf8xf7 c5xd6 Qf4xf3+ Qc2g2 Qf3d3 e4e5 Rf7f1+ Qg2xf1 Qd3xf1+
Kh1h2 Bd4xe5+
15 10:44 485.597.785 754.436 +M10 d6xc5 Qc2g2 Rf8g8
Rc7xf7+ Qf4xf7 f3f4 Qf7xf4 Qg2xg8+ Kh7xg8 Kh1g2 Be5d4 h2h4 Qf4g4+
Kg2h2 Bd4e5+ Kh2h1 Qg4h3+ Kh1g1 Be5d4+
15 10:44 485.597.785 754.436 +22.58 Qf4h4 Qc2e2 Rf8b8
Rc7xf7+ Kh7g8 f3f4 Rb8b1+ Kh1g2 Be5d4 Rf7f8+ Kg8xf8 e4e5 d6xe5 Kg2f3
Qh4h5+ Kf3e4 Qh5xe2+ Ke4f5 Qe2h5+ Kf5e6 e5xf4 Ke6d6 Qh5e5+ Kd6c6
15 10:44 485.597.785 754.436 +13.27 Kh7h8 c5xd6 Rf8g8
Qc2f2 Rg8b8 Qf2g3 Rb8b1+ Kh1g2 Qf4d2+ Kg2h3 Be5xg3 Rc7c8+ Kh8g7 Rc8c2
Qd2xc2 h2xg3 Qc2xa2 d6d7 Rb1h1+ Kh3g4
15 10:44 485.597.785 754.436 +11.87 Qf4e3 Qc2d1 d6xc5
Qd1g1 Qe3xf3+ Qg1g2 Qf3d1+ Qg2g1 Qd1xg1+ Kh1xg1 Be5xc7 Kg1f2 Bc7xh2
a2a4 Rf8g8 Kf2e2 h6h5 a4a5 h5h4 Ke2e3 h4h3
15 10:44 485.597.785 754.436 +11.35 Qf4xf3+ Qc2g2 Qf3f4
Qg2g3 Qf4xe4+ Qg3g2 Qe4f4 c5xd6 Be5xd6 Qg2c2+ Kh7h8 Qc2c3+ f7f6 Qc3g3
Qf4f1+ Qg3g1 Qf1f3+ Qg1g2 Qf3d1+ Qg2g1 Qd1xd5+ Qg1g2 Qd5d1+ Qg2g1
Qd1xg1+ Kh1xg1 Rf8g8+ Kg1h1 Bd6xc7
15 10:44 485.597.785 754.436 +10.79 Rf8d8 c5xd6 Rd8xd6
Qc2f2 Rd6g6 Rc7c6 Be5d4 Rc6xg6 Bd4xf2 Kh1g2 Kh7xg6 Kg2xf2 Qf4xh2+
Kf2e3 Qh2xa2 f3f4 Qa2b3+ Ke3d4 Qb3b4+ Kd4e3
15 10:44 485.597.785 754.436 +8.54 a6a5 c5xd6 Rf8b8
Rc7xf7+ Qf4xf7 Qc2c7 Qf7xc7 d6xc7 Be5xc7 Kh1g1 Rb8b2 a2a3 Bc7xh2+
Kg1f1 Rb2a2 a3a4 h6h5 f3f4 Ra2xa4

And Toga II 1.3X4 (http://www.superchessengine.com/toga_ii.htm):
15/60 56:51 796.301.836 582.638 +M7 Rf8g8 Rc7xf7+ Qf4xf7
Qc2g2 Qf7f4 Qg2g3 Rg8xg3 h2xg3 Qf4xg3 f3f4 Qg3h3+ Kh1g1 Be5d4+
15/60 56:51 814.835.699 582.638 +M8 Rf8b8 Rc7xf7+ Qf4xf7
Kh1g2 Qf7f4 Kg2f2 Qf4xh2+ Kf2e3 Qh2xc2 f3f4 Qc2c3+ Ke3e2 Rb8b2+ Ke2d1
Qc3d2+
15/60 56:51 846.431.910 582.638 +M9 Be5d4 e4e5+ Kh7h8
Qc2d1 Rf8g8 Rc7c8 Rg8xc8 h2h3 Bd4xe5 Kh1g2 Qf4h2+ Kg2f1 Rc8g8 Qd1d4
Be5xd4 c5xd6 Rg8g1+
15/60 56:51 944.985.636 582.638 +M10 d6xc5 Qc2g2 Rf8g8
Rc7xf7+ Qf4xf7 f3f4 Rg8xg2 Kh1xg2 Qf7xf4 a2a3 Be5d4 h2h4 Qf4g4+ Kg2h2
Bd4e5+ Kh2h1 Qg4h3+ Kh1g1 Be5d4+
15/60 56:51 1.318.918.791 582.638 +M12 Qf4h4 Qc2e2 Rf8b8
Rc7xf7+ Kh7g8 f3f4 Rb8b2 Qe2xb2 Be5xb2 Rf7b7 Qh4h3 Rb7b8+ Kg8f7 Rb8b7+
Kf7g6 f4f5+ Kg6g5 Rb7g7+ Bb2xg7 Kh1g1 Bg7d4+ Kg1h1 Qh3f1+
15/60 56:51 1.622.195.654 582.638 +12.74 Kh7h8 c5xd6 Rf8g8
Qc2f2 Rg8b8 Qf2g3 Rb8b1+ Kh1g2 Qf4d2+ Qg3f2 Qd2g5+ Kg2h3 Qg5h5+ Qf2h4
Qh5xf3+ Qh4g3 Be5xg3 Rc7c8+ Kh8g7 Rc8c3 Qf3xc3 h2xg3 Rb1b2
15/66 56:51 1.689.759.992 582.638 +12.25 Qf4xf3+ Qc2g2 Qf3f4
Qg2g3 Qf4xe4+ Qg3g2 Qe4f4 Qg2g3 Qf4f5 Kh1g2 Be5xg3 h2xg3 d6xc5 a2a3
Qf5xd5+ Kg2f2 Rf8g8 Rc7e7 Qd5a2+ Re7e2 Qa2xa3
15/66 56:51 1.873.289.404 582.638 +12.25 Rf8d8 c5xd6 Rd8xd6
Rc7c6 Rd6d8 Rc6c4 Rd8g8 Qc2e2 Rg8b8 Kh1g1 Rb8b1+ Kg1f2 Qf4g5 Qe2f1
Qg5h4+ Kf2e2 Qh4xh2+ Qf1f2 Rb1b2+ Ke2d1 Qh2xf2
15/71 56:51 1.987.682.171 582.638 +8.86 Rf8e8 c5xd6 Re8g8
Rc7xf7+ Qf4xf7 Qc2c7 Qf7xc7 d6xc7 Be5xc7 a2a3 h6h5 h2h4 a6a5 a3a4
Bc7d6 e4e5 Bd6xe5 d5d6 Be5xd6 f3f4 Kh7h8 f4f5 Kh8g7 Kh1g2 Kg7f6+ Kg2f3
Kf6xf5
15/66 56:51 1.907.504.529 582.638 +8.83 a6a5 c5xd6 Rf8g8
Rc7xf7+ Qf4xf7 Qc2c7 Qf7xc7 d6xc7 Be5xc7 a2a3 Rg8g6 e4e5 Bc7xe5 a3a4
Be5d6 f3f4 Bd6xf4 h2h4 Kh7g7 h4h5 Rg6g3 Kh1h2 Rg3g5+ Kh2h3 Rg5xd5

Tony
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