LearningLemming-Rybka, WCRCC 2009

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jdart
Posts: 4367
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

LearningLemming-Rybka, WCRCC 2009

Post by jdart »

[D] 3r2k1/p1q2pp1/2b1pb1p/2Pr4/6Q1/R4NP1/P1R1BP1P/6K1 b - -

here Rybka played Rd1+, which is winning, although other moves such as a5 are probably sufficient, too.

Arasan will switch to Rd1 eventually although it takes over 3 minutes. I tried Crafty 23.0 too but Crafty prefers a5 at least for several minutes.

Arasan's analysis:

"LearningLemming-Rybka, WCRCC 2009" bm Rd1+

result: Rd1+ score: +1.79 ++ solved in 204.17 sec. (431.23M nodes)
Rd1+ Bxd1 Rxd1+ Kg2 Rd4 Qh3 Be4 Qg4 Bf5 Qxf5 exf5 Nxd4 Bxd4 c6 Bb6 Rc4

result(2): a5 score: +1.25 ** not solved in 3600.14 secs. (
7753.98M nodes)
a5 Qf4 e5 Qc1 e4 Ne1 Bg5 Qb2 Be7 Qc1 Be8 Ng2 Rxc5 Rac3 Rxc3 Rxc3 Qe5 Nf4 Bd7 Rc7

result(3): Rf5 score: +1.32 ** not solved in 3600.07 secs. (
7649.41M nodes)
Rf5 Qc4

Btw. Rybka's score for Rd1+ is over +2.

--Jon
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: LearningLemming-Rybka, WCRCC 2009

Post by zullil »

jdart wrote:[D] 3r2k1/p1q2pp1/2b1pb1p/2Pr4/6Q1/R4NP1/P1R1BP1P/6K1 b - -

I tried Crafty 23.0 too but Crafty prefers a5 at least for several minutes.

--Jon
Everything is relative. Crafty-23.0 finds Rd1+ in about 45 seconds for me.

Code: Select all

max threads set to 8.
EGTB cache memory =  256M bytes.
hash table memory = 3072M bytes.
pawn hash table memory =  512M bytes.
choose from book moves randomly (using weights.)
choose from 5 best moves.
pondering enabled.
Audio output enabled
 game/10 minutes primary time control


Crafty v23.0 (8 cpus)

White(1): book off
book file disabled.
White(1): ponder off
pondering disabled.
White(1): setboard 3r2k1/p1q2pp1/2b1pb1p/2Pr4/6Q1/R4NP1/P1R1BP1P/6K1 b - -
Black(1): st 120
search time set to 120.00.
Black(1): display stats
display statistics at end of each search.
Black(1): display

       +---+---+---+---+---+---+---+---+
    8  |   | . |   |<R>|   | . |<K>| . |
       +---+---+---+---+---+---+---+---+
    7  |<P>|   |<Q>|   | . |<P>|<P>|   |
       +---+---+---+---+---+---+---+---+
    6  |   | . |<B>| . |<P>|<B>|   |<P>|
       +---+---+---+---+---+---+---+---+
    5  | . |   |-P-|<R>| . |   | . |   |
       +---+---+---+---+---+---+---+---+
    4  |   | . |   | . |   | . |-Q-| . |
       +---+---+---+---+---+---+---+---+
    3  |-R-|   | . |   | . |-N-|-P-|   |
       +---+---+---+---+---+---+---+---+
    2  |-P-| . |-R-| . |-B-|-P-|   |-P-|
       +---+---+---+---+---+---+---+---+
    1  | . |   | . |   | . |   |-K-|   |
       +---+---+---+---+---+---+---+---+
         a   b   c   d   e   f   g   h

Black&#40;1&#41;&#58; go
              time limit 2&#58;00 (+0.00&#41; &#40;2&#58;00&#41;
              depth   time  score   variation &#40;1&#41;
starting thread 1
starting thread 2
starting thread 3
starting thread 4
starting thread 5
starting thread 6
starting thread 7
                8->   0.04  -1.29   1. ... h5 2. Qf4 Qxf4 3. gxf4 R5d7
                                    4. Ra6 Rc7 5. Ne5
                9     0.07  -1.46   1. ... h5 2. Qf4 e5 3. Qe3 e4 4. Nh4 
                                    Qe7 5. f3 exf3 6. Nxf3
                9->   0.09  -1.46   1. ... h5 2. Qf4 e5 3. Qe3 e4 4. Nh4 
                                    Qe7 5. f3 exf3 6. Nxf3
               10     0.13  -1.30   1. ... h5 2. Qb4 e5 3. Re3 g5 4. h4  
                                    gxh4 5. gxh4 Rb8 6. Qe1
               10     0.42  -1.61   1. ... Rf5 2. Qb4 Rb8 3. Qe1 Be7 4.   
                                    Rac3 Ba4 5. Rc1 Rxc5 6. Nd4
               10->   0.44  -1.61   1. ... Rf5 2. Qb4 Rb8 3. Qe1 Be7 4.
                                    Rac3 Ba4 5. Rc1 Rxc5 6. Nd4 &#40;s=4&#41;
               11     0.57  -1.68   1. ... Rf5 2. Qb4 Rb8 3. Qe1 Be7 4.   
                                    Rac3 Ba4 5. Rc1 Rxc5 6. Qd2 Rxc3 7.
                                    Rxc3 &#40;s=3&#41;
               11->   0.60  -1.68   1. ... Rf5 2. Qb4 Rb8 3. Qe1 Be7 4.   
                                    Rac3 Ba4 5. Rc1 Rxc5 6. Qd2 Rxc3 7.
                                    Rxc3
               12     0.69  -1.31   1. ... Rf5 2. Qb4 Rb8 3. Qe1 Bxf3 4.  
                                    Bxf3 Rxc5 5. Rxc5 Qxc5 6. Rb3 Rxb3
                                    7. axb3
               12     1.89  -1.56   1. ... a5 2. Ne1 Be7 3. Nd3 Rd4 4.    
                                    Qh3 e5 5. f3 e4 6. fxe4 Bxe4 7. g4
                                    Bxd3 8. Rxd3 Bxc5
               12->   2.20  -1.56   1. ... a5 2. Ne1 Be7 3. Nd3 Rd4 4.
                                    Qh3 e5 5. f3 e4 6. fxe4 Bxe4 7. g4
                                    Bxd3 8. Rxd3 Bxc5 &#40;s=6&#41;
               13     3.63  -1.61   1. ... a5 2. Qc4 Rb8 3. Qa6 Rf5 4.    
                                    Qd3 Rb1+ 5. Kg2 Be7 6. Rac3 Rd5 7.
                                    Qa6 a4 <HT> &#40;s=5&#41;
               13->   3.74  -1.61   1. ... a5 2. Qc4 Rb8 3. Qa6 Rf5 4.    
                                    Qd3 Rb1+ 5. Kg2 Be7 6. Rac3 Rd5 7.
                                    Qa6 a4 <HT>
               14     3.96  -1.66   1. ... a5 2. Qc4 Rb8 3. Qa6 Rf5 4.    
                                    Qd3 Rb1+ 5. Kg2 Be7 6. Rac3 Rd5 7.
                                    Qe3 Re5 8. Qd4 g5
               14->   4.21  -1.66   1. ... a5 2. Qc4 Rb8 3. Qa6 Rf5 4.    
                                    Qd3 Rb1+ 5. Kg2 Be7 6. Rac3 Rd5 7.
                                    Qe3 Re5 8. Qd4 g5
               15     8.37  -1.80   1. ... a5 2. Re3 Rb8 3. Rb3 Rxb3 4.   
                                    axb3 Qb7 5. Qc4 Be7 6. Rc3 Rxc5 7.
                                    Qd4 Rxc3 8. Qxc3 Be4
               15->  10.15  -1.80   1. ... a5 2. Re3 Rb8 3. Rb3 Rxb3 4.   
                                    axb3 Qb7 5. Qc4 Be7 6. Rc3 Rxc5 7.
                                    Qd4 Rxc3 8. Qxc3 Be4
               16    23.00  -1.71   1. ... a5 2. Qc4 Rb8 3. Rb3 Be7 4.    
                                    Nd4 Rxb3 5. axb3 Rxc5 6. Qd3 Bb7 7.
                                    Rc4 Rxc4 8. Qxc4 Qxc4 9. Bxc4
               16->  25.61  -1.71   1. ... a5 2. Qc4 Rb8 3. Rb3 Be7 4.    
                                    Nd4 Rxb3 5. axb3 Rxc5 6. Qd3 Bb7 7.
                                    Rc4 Rxc4 8. Qxc4 Qxc4 9. Bxc4
               17    26.86  -1.78   1. ... a5 2. Qc4 Rb8 3. Rb3 Be7 4.    
                                    Nd4 Rxb3 5. axb3 Rxc5 6. Qd3 Bb7 7.
                                    Rc4 Rxc4 8. Qxc4 Qxc4 9. Bxc4 Be4
               17->  29.92  -1.78   1. ... a5 2. Qc4 Rb8 3. Rb3 Be7 4.    
                                    Nd4 Rxb3 5. axb3 Rxc5 6. Qd3 Bb7 7.
                                    Rc4 Rxc4 8. Qxc4 Qxc4 9. Bxc4 Be4 &#40;s=2&#41;
               18    35.33  -1.75   1. ... a5 2. Qc4 Rb8 3. Rb3 Be7 4.    
                                    Rxb8+ Qxb8 5. Qb3 Qxb3 6. axb3 Rxc5
                                    7. Rxc5 Bxc5 8. Ne5 Bd5 9. Nc4 Bb4
                                    10. h3 e5 11. Nxe5 Bxb3
               18    46.78     -1   1. ... Rd1+!                          
               18    48.08  -2.56   1. ... Rd1+ 2. Bxd1 Rxd1+ 3. Kg2 Rd4  
                                    4. Qh5 Be4 5. Re2 Bg6 6. Qh3 Bf5 7.
                                    g4 Rxg4+ 8. Kh1 Qxc5 9. Rb3 Rg1+ 10.
                                    Nxg1 Bxh3 11. Nxh3 Qd5+ 12. f3 Qd1+
                                    13. Ng1
               18->  48.11  -2.56   1. ... Rd1+ 2. Bxd1 Rxd1+ 3. Kg2 Rd4  
                                    4. Qh5 Be4 5. Re2 Bg6 6. Qh3 Bf5 7.
                                    g4 Rxg4+ 8. Kh1 Qxc5 9. Rb3 Rg1+ 10.
                                    Nxg1 Bxh3 11. Nxh3 Qd5+ 12. f3 Qd1+
                                    13. Ng1 &#40;s=11&#41;
               19    50.86  -2.90   1. ... Rd1+ 2. Bxd1 Rxd1+ 3. Kg2 Rd4  
                                    4. Qh5 Be4 5. Re2 Bg6 6. Qh3 Bf5 7.
                                    g4 Rxg4+ 8. Kh1 Qxc5 9. Rb3 Rg1+ 10.
                                    Nxg1 Bxh3 11. Nxh3 Qd5+ 12. f3 Qd1+
                                    13. Ng1 Bd4 14. Rb8+ Kh7 <HT> &#40;s=10&#41;
               19->  54.02  -2.90   1. ... Rd1+ 2. Bxd1 Rxd1+ 3. Kg2 Rd4  
                                    4. Qh5 Be4 5. Re2 Bg6 6. Qh3 Bf5 7.
                                    g4 Rxg4+ 8. Kh1 Qxc5 9. Rb3 Rg1+ 10.
                                    Nxg1 Bxh3 11. Nxh3 Qd5+ 12. f3 Qd1+
                                    13. Ng1 Bd4 14. Rb8+ Kh7 <HT>
               20    58.96  -2.90   1. ... Rd1+ 2. Bxd1 Rxd1+ 3. Kg2 Rd4  
                                    4. Qh5 Be4 5. Re2 Bg6 6. Qh3 Bf5 <HT>
               20->   1&#58;05  -2.90   1. ... Rd1+ 2. Bxd1 Rxd1+ 3. Kg2 Rd4  
                                    4. Qh5 Be4 5. Re2 Bg6 6. Qh3 Bf5 <HT>
                                    &#40;s=2&#41;
               21     1&#58;20     +1   1. ... Rd1+?                          
               21     1&#58;28  -2.67   1. ... Rd1+ 2. Bxd1 Rxd1+ 3. Kg2 Rd4  
                                    4. Qh5 Be4 5. Qg4 Bf5 6. Qxf5 exf5
                                    7. Nxd4 Bxd4 8. c6 Bb6 9. f3 Qd6 10.
                                    Rac3 Bc7 11. Re2 Kf8 12. Rc4 Qd5
               21->   1&#58;56  -2.67   1. ... Rd1+ 2. Bxd1 Rxd1+ 3. Kg2 Rd4  
                                    4. Qh5 Be4 5. Qg4 Bf5 6. Qxf5 exf5
                                    7. Nxd4 Bxd4 8. c6 Bb6 9. f3 Qd6 10.
                                    Rac3 Bc7 11. Re2 Kf8 12. Rc4 Qd5 &#40;s=4&#41;
              time=2&#58;00  mat=0  n=2801807758  fh=92%  nps=23.3M           
              ext-> check=78.5M qcheck=85.4M reduce=1576.9M/348.6M
              predicted=0  evals=2234.7M  50move=0  EGTBprobes=0  hits=0
              SMP->  splits=236157  aborts=25428  data=49/512  elap=2&#58;00
terminating SMP processes.

Black&#40;1&#41;&#58; Rd1+ 
              time used&#58;   2&#58;00
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User avatar
Eelco de Groot
Posts: 4567
Joined: Sun Mar 12, 2006 2:40 am
Full name:   

Re: LearningLemming-Rybka, WCRCC 2009

Post by Eelco de Groot »

jdart wrote:[D] 3r2k1/p1q2pp1/2b1pb1p/2Pr4/6Q1/R4NP1/P1R1BP1P/6K1 b - -

here Rybka played Rd1+, which is winning, although other moves such as a5 are probably sufficient, too.

Arasan will switch to Rd1 eventually although it takes over 3 minutes. I tried Crafty 23.0 too but Crafty prefers a5 at least for several minutes.

Arasan's analysis:

"LearningLemming-Rybka, WCRCC 2009" bm Rd1+

result: Rd1+ score: +1.79 ++ solved in 204.17 sec. (431.23M nodes)
Rd1+ Bxd1 Rxd1+ Kg2 Rd4 Qh3 Be4 Qg4 Bf5 Qxf5 exf5 Nxd4 Bxd4 c6 Bb6 Rc4

result(2): a5 score: +1.25 ** not solved in 3600.14 secs. (
7753.98M nodes)
a5 Qf4 e5 Qc1 e4 Ne1 Bg5 Qb2 Be7 Qc1 Be8 Ng2 Rxc5 Rac3 Rxc3 Rxc3 Qe5 Nf4 Bd7 Rc7

result(3): Rf5 score: +1.32 ** not solved in 3600.07 secs. (
7649.41M nodes)
Rf5 Qc4

Btw. Rybka's score for Rd1+ is over +2.

--Jon
I am still searching for a bug that makes Ancalagon crash in the last testposition from Robert Basham, but this one does not look so difficult:


[D]3r2k1/p1q2pp1/2b1pb1p/2Pr4/6Q1/R4NP1/P1R1BP1P/6K1 b - -

Engine: Ancalagon 1.3 Weak Squares 180 Board Control middle game 50 endgame 50 Null move in Q-search Build 240 (Athlon 2009 MHz, 64 MB)
by Romstad, Costalba, Kiiski, de Groot

2.00 0:00 +4.37 1...Rd1+ 2.Bf1 Bd4 3.Nxd4 R8xd4 (183.786) 346

3.01 0:03 +5.39 1...Rd1+ 2.Bf1 Bb5 3.Rc4 Rxf1+
4.Kxf1 Qxc5 5.Raa4 Rd1+ 6.Ne1 Bxc4+
7.Rxc4 (1.355.365) 444

4.01 0:05 +3.01 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Kf8 4.h3 Rd4
5.Qh5 Rd1 6.Kh2 (2.723.605) 484

5.01 0:09 +4.72 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 h5 4.Qc4 h4
5.gxh4 Qe5 6.Rc1 Rd4 7.Qa6 (4.482.012) 483

6.01 0:13 +3.29 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 h5 4.Qc4 h4
5.Kh3 hxg3 6.fxg3 Bxf3 7.Rxf3 Rd4 (6.567.481) 490

7.01 0:26 +3.72 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Qe5
4.Re3 Qd5 5.Rce2 Rd4 6.Qh3 Kf8 7.Kf1 Rd1+
8.Re1 Rxe1+ 9.Nxe1 Qxa2 (13.062.339) 486

8.01 0:38 +3.29 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Qe5
4.Re3 Qd5 5.Rce2 Rd4 6.Qh3 Kf8 7.Re1 Rd1
8.Rxd1 Qxd1 (18.838.702) 495

9.01 2:07 +3.56 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Qe5
4.Re3 Qd5 5.Rce2 Bd4 6.Rxe6 fxe6
7.Qxe6+ Qxe6 8.Rxe6 Rd2 9.Rxc6 Rxf2+
10.Kh3 Rxf3 (57.401.478) 451

10.01 3:37 +3.80 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Rd4
4.Qh5 Be4 5.Rc1 Bg6 6.Qh3 Bf5 7.Qxf5 exf5
8.Nxd4 Bxd4 9.c6 Kf8 (98.800.781) 454

11.01 7:17 +4.03 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Rd4
4.Qh5 Be4 5.Rac3 Bg6 6.Qxg6 fxg6
7.Nxd4 Bxd4 8.Rc4 e5 9.f3 Kf7 10.c6 (200.805.225) 459

12.01 16:33 +4.01 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Qe5
4.Kh3 Qa1 5.Qc4 Rh1 6.Qe2 g5 7.Rc4 h5
8.g4 hxg4+ 9.Rxg4 Qc1 10.Rxa7 Qxc5 (451.170.693) 454


Regards,
Eelco
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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jdart
Posts: 4367
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: LearningLemming-Rybka, WCRCC 2009

Post by jdart »

Your hw is a lot faster than mine. I'm on a quad not 8 cpu.

--Jon
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yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Re: LearningLemming-Rybka, WCRCC 2009

Post by yanquis1972 »

probably MP variance, which can sometimes be extreme. on the rybka forum i was able to find a move in 20 minutes that someone with a quad did not find in 4 hours analysis of a CC game.

here rybka is very fast but not as a amazing as eelco's engine (which found this instantly!?)

Analysis by Rybka 3:

1...a5 2.Qc4 Qa7
-/+ (-1.30) Depth: 6 00:00:00 3kN
1...a5 2.Qc4 a4 3.Re3
-/+ (-1.36) Depth: 7 00:00:00 11kN
1...a5 2.Qc4 a4 3.Qb4 Rb8
-/+ (-1.35) Depth: 8 00:00:00 17kN
1...a5 2.Qc4 a4 3.Re3 Be7 4.Rec3
-/+ (-1.40) Depth: 9 00:00:00 50kN
1...a5 2.Qc4 a4 3.Re3 Be7 4.Rec3 Qb7
-/+ (-1.40) Depth: 10 00:00:00 77kN
1...a5 2.Qc4 a4 3.Re3 Be7 4.Rec3 Qb7 5.Qa6
-+ (-1.45) Depth: 11 00:00:00 149kN
1...a5 2.Qc4 Rb8 3.Rb3 Be7 4.Rxb8+ Qxb8 5.Nd2 Qe5 6.Nf3 Qf5
-+ (-1.45) Depth: 12 00:00:01 359kN
1...a5 2.Qf4 e5 3.Qc1 e4 4.Ne1 Bd4 5.Ng2 Re5 6.Ne3 a4
-+ (-1.44) Depth: 13 00:00:03 754kN
1...Rd1+
-+ (-1.65 !) Depth: 13 00:00:04 970kN
1...Rd1+
-+ (-1.85 !) Depth: 13 00:00:05 1057kN
1...Rd1+
-+ (-2.25 !) Depth: 13 00:00:06 1335kN
1...Rd1+ 2.Bxd1 Rxd1+[] 3.Kg2[] Rd4 4.Qh5 Be4[] 5.Qg4 Bf5[] 6.Qxf5[] exf5[] 7.Nxd4[] Bxd4[] 8.c6 Bb6 9.Rac3 g5 10.a3 Kg7 11.h3 Kg6[] 12.Rc4 h5[] 13.a4
-+ (-2.37) Depth: 13 00:00:09 2017kN
1...Rd1+ 2.Bxd1 Rxd1+[] 3.Kg2[] Rd4[] 4.Qh5 Be4[] 5.Qg4 Bf5[] 6.Qxf5[] exf5[] 7.Nxd4[] Bxd4[] 8.c6 Bb6 9.Rac3 g5 10.a3 Kg7 11.h3 Kg6[] 12.Rc4 h5[] 13.a4
-+ (-2.40) Depth: 14 00:00:11 2487kN
1...Rd1+ 2.Bxd1 Rxd1+[] 3.Kg2[] Rd4[] 4.Qh5 Be4[] 5.Qg4 Bf5[] 6.Qxf5[] exf5[] 7.Nxd4[] Bxd4[] 8.c6 Bb6 9.Rac3 g5 10.a3 Kg7 11.h3 Kg6[] 12.Rc4 h5[] 13.a4
-+ (-2.40) Depth: 15 00:00:13 3014kN
1...Rd1+ 2.Bxd1 Rxd1+[] 3.Kg2[] Rd4[] 4.Qh5 Be4[] 5.Qg4 Bf5[] 6.Qxf5 exf5[] 7.Nxd4[] Bxd4[] 8.c6 Bb6 9.Rac3 g5 10.a3 Kg7 11.h3 Kg6[] 12.Rc4 h5[] 13.Rc1 Kf6[]
-+ (-2.40) Depth: 16 00:00:18 4137kN
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yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Re: LearningLemming-Rybka, WCRCC 2009

Post by yanquis1972 »

louis, have you managed to disable hyperthreading on your mac pro?
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BubbaTough
Posts: 1154
Joined: Fri Jun 23, 2006 5:18 am

Re: LearningLemming-Rybka, WCRCC 2009

Post by BubbaTough »

Just for giggles I put this into LearningLemming. It plays this move in 1 minute 55 seconds at a depth of 17 on 1 thread 2.66 ghz core 2 duo. Now if only it could get this position against Rybka (instead of the other way around) life would be good.

Its interesting to see engines take a while on this, because I would expect most mediocre human chess masters to play this move, even in somewhat rapid time controls.

-Sam
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Robert Flesher
Posts: 1280
Joined: Tue Aug 18, 2009 3:06 am

Re: LearningLemming-Rybka, WCRCC 2009

Post by Robert Flesher »

Heya Jon, pretty easy for Deep Junior 10.1 or my Core I7 920. Deep Junior sees it instantly.


New game
3r2k1/p1q2pp1/2b1pb1p/2Pr4/6Q1/R4NP1/P1R1BP1P/6K1 b - - 0 1

Analysis by Deep Junior 10.1 UCI:

1...h5 2.Qb4 Qb8
µ (-0.97) Depth: 3 00:00:00
1...Qb7 2.Rc4
µ (-1.05) Depth: 3 00:00:00
1...Qb7 2.Rb3 Qe7 3.Qb4 Qd7
µ (-1.09) Depth: 6 00:00:00 5kN
1...Rb8 2.Rb3 Qd8
µ (-1.16) Depth: 6 00:00:00 15kN
1...Rb8 2.Rb3 Rxb3 3.axb3 Qa5 4.Qc4
µ (-1.19) Depth: 9 00:00:00 51kN
1...Be7 2.Rb3 Bxc5 3.Rc4 Qa5
µ (-1.24) Depth: 9 00:00:00 165kN
1...Be7 2.Rb3 Rxc5 3.Rxc5 Bxc5 4.h3 f5 5.Qg6 Bd5
µ (-1.34) Depth: 12 00:00:00 1248kN
1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Rd4 4.Qh5 Be4 5.Rc1 Bg6 6.Qh3 Bf5 7.g4 Rxg4+ 8.Kh1 Rg1+ 9.Nxg1 Bxh3 10.Nxh3
-+ (-1.50) Depth: 12 00:00:00 2443kN
1...Rd1+
-+ (-1.80) Depth: 15 00:00:00 4351kN
1...Rd1+
-+ (-2.10) Depth: 18 00:00:02 43538kN
1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Rd4 4.Qh5 Be4 5.Rc1 Bg6 6.Qh3 Bf5 7.Qh5 Bg4 8.Nxd4 Bxh5 9.c6
-+ (-2.10) Depth: 20 00:00:14 194935kN
1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Rd4 4.Qh5 Be4 5.Rc1
-+ (-2.10) Depth: 21 00:01:10 980536kN
1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Rd4 4.Qh5 Be4 5.Rc1 Bg6
-+ (-2.10) Depth: 22 00:02:07 1767516kN

(, Microsoft 25.08.2009)
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User avatar
Eelco de Groot
Posts: 4567
Joined: Sun Mar 12, 2006 2:40 am
Full name:   

Re: LearningLemming-Rybka, WCRCC 2009

Post by Eelco de Groot »

Thanks John... Probably there was quite a bit of luck involved that Ancalagon did not lose the thread here after the first plies. Stockfish for instance does not play the move at all anymore after four plies in single-PV mode 8-)

I wanted to check whether after

[FEN "3r2k1/p1q2pp1/2b1pb1p/2Pr4/6Q1/R4NP1/P1R1BP1P/6K1 b - -"]

1... Rd1+ 2. Bxd1 Rxd1+ 3. Kg2 *

3...Qe5 was also possible and Stockfish does confirm this is good in multi-PV mode, but probably selectively prunes some of the best moves after Rd1, which is a problem for Ancalagon as well in other cases. 21... Nxe4 by Nakamura against Beljavsky is still completely unfindable :(

1... Rd1, not found in Learning Lemming - Rybka by Stockfish 1.4


3r2k1/p1q2pp1/2b1pb1p/2Pr4/6Q1/R4NP1/P1R1BP1P/6K1 b - -

Engine: Stockfish 1.4 JA (64 MB)
by Tord Romstad, Marco Costalba, Joona Kii

2.00 0:00 +1.87 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 (243) 2

3.00 0:00 +2.12 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Bd4 (708) 6

4.00 0:00 +0.78 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 h5
4.Qxh5 (2.176) 17

4.00 0:00 +1.11 1...Qb7 2.Rb3 Qc7 3.Rc1 (2.642) 21

4.00 0:00 +1.55 1...Qb8 2.Rb3 Rd1+ 3.Bxd1 Rxd1+
4.Kg2 (3.398) 27

5.00 0:00 +1.51 1...Qb8 2.Rb3 Rd1+ 3.Bxd1 Rxd1+
4.Kg2 Qe5 (4.678) 33

6.00 0:00 +1.17 1...Qb8 2.Rb3 h5 3.Qc4 Rd1+ 4.Bxd1 Rxd1+
5.Kg2 (9.817) 62

6.00 0:00 +1.29 1...Ba8 2.Qf4 Qxf4 3.gxf4 Be7 4.Rxa7 Bxc5 (16.077) 102

7.00 0:00 +1.27 1...Ba8 2.Qf4 Qxf4 3.gxf4 Be7 4.Rxa7 Bxc5
5.Rc7 (25.388) 135

7.00 0:00 +1.47 1...Be7 2.Qb4 Rb8 3.Qa5 Rb1+ 4.Bf1 Qxa5
5.Rxa5 Rxc5 6.Raxc5 Bxc5 7.Rxc5 Bxf3 (37.135) 182

7.00 0:00 +1.77 1...a5 (47.032) 214

8.00 0:00 +1.63 1...a5 2.Qf4 Qxf4 3.gxf4 a4 4.Ne5 Bxe5
5.fxe5 Rxe5 6.Rg3 (67.991) 255

9.00 0:00 +2.02 1...a5 2.Qf4 Qxf4 3.gxf4 Rf5 4.Ne5 Be4
5.Rc4 Rxf4 6.Re3 (110.433) 306

9.00 0:00 +2.34 1...Rf5 2.Qb4 Rb8 3.Qd2 Be4 4.c6 Bxc6
5.Rb3 Rd5 6.Rxb8+ Qxb8 7.Rxc6 Rxd2
8.Nxd2 (217.358) 386

10.00 0:00 +2.22 1...Rf5 2.Re3 a5 3.Rc1 h5 4.Qc4 Be7
5.Rd1 Rxd1+ 6.Bxd1 Rxc5 (426.285) 432

11.01 0:01 +2.52 1...Rf5 2.Re3 a5 3.Rc1 h5 4.Qh3 Qa7
5.Rb3 a4 6.Re3 Rxc5 (646.072) 459

12.01 0:02 +1.79 1...Rf5 2.Qb4 (1.188.420) 481

12.03 0:03 +1.95 1...Be7 2.Qb4 Bd7 3.Rac3 Rc8 4.Ba6 Rb8
5.Qa3 Bb5 6.Rc1 Bxa6 7.Qxa6 Bxc5 (1.551.940) 501

13.01 0:05 +1.87 1...Be7 2.Qb4 Bd7 3.Rac3 Rc8 4.Ba6 Rb8
5.Qa3 Rb1+ 6.Bf1 Bb5 7.Rc1 Rxc1
8.Qxc1 Bxf1 9.Qxf1 Bxc5 (2.860.299) 527

13.02 0:11 +2.46 1...Rf5 2.Re3 Qa5 3.Qc4 Bd5 4.Qg4 h5
5.Qh3 Bc6 6.Rc1 Rb8 7.a4 Rxc5 (5.794.209) 518

14.01 0:16 +2.62 1...Rf5 2.Re3 Qa5 3.Rc1 Rxc5 4.Rxc5 Qxc5
5.Qc4 Rd1+ 6.Kg2 Qxc4 7.Bxc4 Rc1
8.Be2 Bd5 9.Ra3 Bd4 (8.689.597) 523

15.01 0:28 +2.66 1...Rf5 2.Re3 Qa5 3.Rc1 Rxc5 4.Rxc5 Qxc5
5.Qc4 Rd1+ 6.Kg2 Qxc4 7.Bxc4 Rc1
8.Be2 Bd5 9.Ra3 Bd4 10.h3 (15.162.191) 525

16.01 0:39 +2.42 1...Rf5 2.Re3 (21.084.393) 529

17.01 1:54 +2.54 1...Rf5 2.Re3 Qa5 3.Rc1 Rxc5 4.Rxc5 Qxc5
5.Qc4 Rd1+ 6.Kg2 Qxc4 7.Bxc4 g5
8.Bb3 Rc1 9.h3 Kf8 10.Rd3 Ke7 11.Bd1 (60.587.285) 529

18.01 3:46 +2.60 1...Rf5 2.Re3 Qa5 3.Rc1 Rxc5 4.Rxc5 Qxc5
5.Qc4 Rd1+ 6.Kg2 Qxc4 7.Bxc4 g5 8.h3 Rc1
9.Bd3 Bd5 10.a3 Bd4 11.Re2 Kg7 (119.793.881) 529

19.01 10:55 +2.58 1...Rf5 2.Qc4 Rb8 3.Qd3 Rb1+ 4.Kg2 Be7
5.Rb3 Rxb3 6.axb3 Bxc5 7.Kf1 Qb6
8.Qc4 a5 9.g4 Rd5 10.Bd3 h5 11.h3 hxg4
12.hxg4 (348.673.264) 531

20.01 23:32 +2.58 1...Rf5 2.Qc4 Rb8 3.Qd3 Rb1+ 4.Kg2 Be7
5.Rb3 Rxb3 6.axb3 Bxc5 7.Kf1 Qb6
8.Qc4 a5 9.g4 Rd5 10.Bd3 h5 11.h3 hxg4
12.hxg4 (749.420.865) 530

21.01 63:44 +2.56 1...Rf5 2.Qc4 Rb8 3.Qd3 Rb1+ 4.Kg2 Be7
5.Rb3 Rxb3 6.axb3 Bxc5 7.Rc1 Qb6
8.g4 Rf4 9.Qc3 Rxg4+ 10.Kf1 Bxf3
11.Qxf3 Rg5 12.Qa8+ Bf8 13.Qf3 Qd4 (2.033.111.477) 531

22.01 189:44 +2.76 1...Rf5 (6.064.696.272) 532

23.01 350:28 +2.60 1...Rf5 2.Re3 a5 3.Qc4 Rb8 4.Rc1 Rb2
5.Rxe6 Rb4 6.Rxc6 Qxc6 7.Qd3 Rxc5
8.Rxc5 Qxc5 9.Kg2 Qc6 10.a3 Ra4
11.Qb3 Re4 12.Bd3 Re1 13.Qb8+ Re8 (11.273.155.457) 536


Switching now to multi-PV:

3r2k1/p1q2pp1/2b1pb1p/2Pr4/6Q1/R4NP1/P1R1BP1P/6K1 b - -

Engine: Stockfish 1.4 JA (64 MB)
by Tord Romstad, Marco Costalba, Joona Kii

14 0:39 +2.38 1...Rf5 2.Qb4 Rb8 3.Qe1 Be4 4.Bd3 Bxf3
5.Bxf5 Qe5 6.Bh7+ Kxh7 7.Rc1 Qh5
8.Qe3 Bc6 9.Rxa7 (20.814.964) 530

14 0:39 +2.26 1...a5 2.Bf1 Be7 3.Rac3 Qa7 4.Ne1 Bf6
5.Rc4 Bb5 6.c6 Bxc4 7.Bxc4 Rd1 8.Qe4 Qc7 (20.814.964) 530

14 0:39 +1.61 1...Be7 2.Qb4 e5 3.Qa5 Qxa5 4.Rxa5 e4
5.Nh4 Rb8 6.Kg2 Rb7 7.f3 e3 8.Ra6 Bd7 (20.814.964) 530
________________________________________________________________

14 0:48 +2.38 1...Rf5 2.Qb4 Rb8 3.Qe1 Be4 4.Bd3 Bxf3
5.Bxf5 Qe5 6.Bh7+ Kxh7 7.Rc1 Qh5
8.Qe3 Bc6 9.Rxa7 (26.012.712) 531

14 0:48 +2.26 1...a5 2.Bf1 Be7 3.Rac3 Qa7 4.Ne1 Bf6
5.Rc4 Bb5 6.c6 Bxc4 7.Bxc4 Rd1 8.Qe4 Qc7 (26.012.712) 531

14 0:48 +1.89 1...e5 2.Qb4 e4 3.Nd2 Be7 4.Bf1 Rd4
5.Qc3 Bf6 6.Nc4 Rd1 7.Qa5 Qxa5
8.Rxa5 Bd4 (26.012.712) 531
________________________________________________________________

15 1:16 +2.40 1...Rf5 2.Qb4 Rb8 3.Qe1 Be4 4.Bd3 Bxf3
5.Bxf5 Qe5 6.Bh7+ Kxh7 7.Rc1 Qh5
8.c6 Bd4 9.c7 Rc8 10.Rd3 e5 (40.582.996) 531

15 1:16 +2.20 1...a5 2.Bf1 Be7 3.Rac3 Qa7 4.Ne1 Bf6
5.Rc4 Bb5 6.c6 Bxc4 7.Qxc4 Qc7 8.Nd3 Bd4
9.Nf4 (40.582.996) 531

15 1:16 +1.85 1...e5 2.Qb4 e4 3.Nd2 Be7 4.Bf1 Rd4
5.Qc3 Qd7 6.Ra6 Bf6 7.Qa3 Qc8 8.Qe3 Qc7 (40.582.996) 531
________________________________________________________________

16 2:56 +2.26 1...Rf5 2.Qb4 Rb8 3.Qe1 Be4 4.Bd3 Bxf3
5.Bxf5 Qe5 6.Bh7+ Kxh7 7.Rc1 Qf5
8.c6 Bd4 9.c7 Rc8 10.Qd2 e5 11.Rb3 (94.402.088) 533

16 2:56 +2.18 1...a5 2.Qc4 Rf5 3.Qa6 Rb8 4.Rb3 Rxb3
5.axb3 Rxf3 6.Bxf3 Bxf3 7.Qb6 Qd7
8.Qb8+ Kh7 9.Qd6 Qb7 10.Ra2 Kg8 (94.402.088) 533

16 2:56 +1.85 1...e5 2.Qb4 e4 3.Nd2 Be7 4.Bf1 h5
5.Nb3 Rd1 6.Rc1 Rxc1 7.Nxc1 h4 8.Be2 hxg3
9.hxg3 Bf6 (94.402.088) 533
________________________________________________________________

17 5:18 +2.52 1...Rf5 2.Qb4 Rb8 3.Qe1 Be4 4.Bd3 Bxf3
5.Bxf5 Qe5 6.Bh7+ Kxh7 7.Rc1 Qf5
8.c6 Bd4 9.c7 Rc8 10.Qd2 e5 11.Qc2 e4 (171.197.034) 538

17 5:18 +2.14 1...a5 2.Qc4 Rf5 3.Qa6 Rb8 4.Rb3 Rxb3
5.axb3 Rxf3 6.Bxf3 Bxf3 7.Rc1 Bb7
8.Qd6 Qc6 9.Qxc6 Bxc6 10.Rd1 Kf8
11.Kf1 (171.197.034) 538

17 5:18 +2.04 1...e5 2.Qb4 e4 3.Nd2 Qe5 4.Nf1 Rb8
5.Qa5 Rb2 6.Rac3 Qb8 7.Rc4 Rxc2
8.Rxc2 Bd4 9.Rc4 Qb2 10.Nd2 Qa1+
11.Bf1 (171.197.034) 538
________________________________________________________________

17 5:53 +2.52 1...Rf5 2.Qb4 Rb8 3.Qe1 Be4 4.Bd3 Bxf3
5.Bxf5 Qe5 6.Bh7+ Kxh7 7.Rc1 Qf5
8.c6 Bd4 9.c7 Rc8 10.Qd2 e5 11.Qc2 e4 (191.459.938) 542

17 5:53 +2.26 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Rd4
4.Qh5 Be4 5.Qg4 Bf5 6.Qxf5 exf5
7.Nxd4 Bxd4 8.c6 Qe5 9.f3 Bb6 10.Rd3 Kf8
11.Rd7 Bc7 (191.459.938) 542

17 5:53 +2.14 1...a5 2.Qc4 Rf5 3.Qa6 Rb8 4.Rb3 Rxb3
5.axb3 Rxf3 6.Bxf3 Bxf3 7.Rc1 Bb7
8.Qd6 Qc6 9.Qxc6 Bxc6 10.Rd1 Kf8
11.Kf1 (191.459.938) 542
________________________________________________________________

18 12:15 +2.58 1...Rf5 2.Re3 Qa5 3.Rc1 Rxc5 4.Rxc5 Qxc5
5.Qc4 Rd1+ 6.Kg2 Qxc4 7.Bxc4 g5 8.h3 Kg7
9.Rd3 Rc1 10.Bb3 Kg6 11.Rd2 Be4 (398.727.413) 542

18 12:15 +2.38 1...a5 2.Qc4 Rf5 3.Qa6 Rb8 4.Qxa5 Qxa5
5.Rxa5 Bxf3 6.Bxf3 Rxf3 7.c6 Kf8
8.Kg2 Rd3 9.Ra7 Ke8 10.Rb7 Rbd8
11.a4 Be5 (398.727.413) 542

18 12:15 +2.24 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2 Rd4
4.Qh3 Be4 5.Qg4 Qc6 6.Rb2 Bf5 7.Qh5 Kh7
8.Qxf7 Rd7 9.Qe8 Bxb2 10.Rxa7 e5
11.Rxd7 Bxd7 12.Qf7 (398.727.413) 542


After 1...Rd1+ 2.Bxd1 Rxd1+ 3.Kg2


[D]6k1/p1q2pp1/2b1pb1p/2P5/6Q1/R4NP1/P1R2PKP/3r4 b - -

Engine: Stockfish 1.4 JA (64 MB)
by Tord Romstad, Marco Costalba, Joona Kii

16 1:20 +2.78 3...g5 4.Kh3 Bb5 5.Nh4 Rd4 6.f4 Bg7
7.Qf3 Bc6 8.Qe3 gxh4 9.Rd3 Qd7
10.Rxd4 Bxd4 11.Qd3 hxg3 12.hxg3 (48.228.894) 598

16 1:20 +2.30 3...Rd4 4.Qh5 Be4 5.Qg4 Bf5 6.Qxf5 exf5
7.Nxd4 Bxd4 8.c6 Qe7 9.Rc4 Qe5
10.Rc1 Bc5 11.Ra5 Qe4+ 12.f3 Qe2+
13.Kh3 (48.228.894) 598

16 1:20 +1.77 3...Qd7 4.Re3 Bg5 5.Kh3 Bxe3 6.Ne5 Bb5
7.Nxd7 Bf1+ 8.Kh4 Bg5+ 9.Qxg5 hxg5+
10.Kxg5 Rxd7 11.Kf4 Bb5 12.Rb2 Rd4+
13.Ke3 Rd3+ 14.Ke4 f5+ 15.Kf4 (48.228.894) 598
_____________________________________________________________

17 2:31 +2.88 3...g5 4.Kh3 Bb5 5.Nh4 Rd4 6.f4 Bg7
7.Qf3 Bc6 8.Qe3 gxh4 9.Rd3 Qd7
10.Rxd4 Bxd4 11.Qe2 hxg3 12.hxg3 (90.438.530) 596

17 2:31 +2.36 3...Rd4 4.Qh5 Be4 5.Qg4 Bf5 6.Qxf5 exf5
7.Nxd4 Bxd4 8.c6 Bb6 9.Rd3 Qe5 10.f3 Bc7
11.Rd7 Kf8 12.Rcd2 Ke8 (90.438.530) 596

17 2:31 +2.06 3...Qd7 4.Re3 Bg5 5.Kh3 Bxe3 6.Ne5 Bb5
7.Nxd7 Bf1+ 8.Kh4 Bg5+ 9.Qxg5 hxg5+
10.Kxg5 Rxd7 11.Kf4 Bb5 12.Rb2 g5+
13.Kg4 Bc6 14.f4 gxf4 15.Kxf4 (90.438.530) 596
______________________________________________________________

18 4:59 +3.07 3...g5 4.Kh3 Bb5 5.Nh4 Rd4 6.f4 Bg7
7.Qf3 Bc6 8.Qe3 gxh4 9.Rd3 Qd7
10.Rxd4 Bxd4 11.Qe2 hxg3 12.Qg4+ Kf8
13.hxg3 (179.962.215) 599

18 4:59 +2.48 3...Rd4 4.Qh5 Be4 5.Qg4 Bf5 6.Qxf5 exf5
7.Nxd4 Bxd4 8.c6 Bb6 9.Rd3 Qe5 10.f3 Bc7
11.Rd7 Kf8 12.a4 Ke8 13.Rcd2 (179.962.215) 599

18 4:59 +2.22 3...Qd7 4.Re3 Bg5 5.Kh3 Bxe3 6.Ne5 Bb5
7.Nxd7 Bf1+ 8.Kh4 Bg5+ 9.Qxg5 hxg5+
10.Kxg5 Rxd7 11.Kf4 Bb5 12.Rb2 a6
13.Rc2 Kh7 14.Ke5 Kg6 (179.962.215) 599
______________________________________________________________

19 13:13 +3.65 3...g5 4.Qc4 Rd4 5.Qf1 g4 6.Kg1 Bxf3
7.Rd3 Qc6 8.Rc1 Kg7 9.a3 Be5 10.Rxd4 Bxd4
11.Qd3 e5 12.Qf5 Kf8 13.Rc2 (477.293.829) 601

19 13:13 +2.68 3...Rd4 4.Qh5 Be4 5.Qg4 Bf5 6.Qxf5 exf5
7.Nxd4 Bxd4 8.c6 Bb6 9.Rd3 Qe5
10.Rdc3 Bc7 11.Rc5 Qe7 12.R2c4 Qe6
13.Kf3 Kf8 (477.293.829) 601

19 13:13 +2.30 3...Qd7 4.Re3 Bg5 5.Kh3 Bxe3 6.Ne5 Bb5
7.Nxd7 Bf1+ 8.Kh4 Bg5+ 9.Qxg5 hxg5+
10.Kxg5 Rxd7 11.Kf4 Bb5 12.Rb2 g5+
13.Kg4 Bc6 14.Kxg5 Rd5+ 15.Kh6 Kf8
16.Rc2 (477.293.829) 601
_______________________________________________________________

20 31:25 +3.71 3...g5 4.Qc4 Rd4 5.Qf1 g4 6.Kg1 Bxf3
7.Rd3 Qc6 8.Rc1 Kg7 9.a3 Be5
10.Rxd4 Bxd4 11.Qd3 e5 12.Qf5 f6
13.Qc2 a5 (1.151.371.791) 610

20 31:25 +2.70 3...Rd4 4.Qh5 Be4 5.Qg4 Bf5 6.Qxf5 exf5
7.Nxd4 Bxd4 8.c6 Bb6 9.Rd3 Qe5
10.Rdc3 Bc7 11.Rc5 Qe7 12.R2c4 g6
13.h3 Kf8 14.Rd5 (1.151.371.791) 610


20 31:25 +2.38 3...Qd7 4.Re3 Rd4 5.Qh5 Bg5 6.Rce2 Bxe3
7.Rxe3 Rd5 8.Qg4 Rxc5 9.Qf4 Rc1
10.g4 Bd5 11.Rd3 Qc8 12.Kh3 Bxa2
13.Ne5 Qc7 (1.151.371.791) 610
_______________________________________________________________

20 48:21 +5.13 3...Qe5 4.Kh3 Qa1 5.Qc4 Rh1 6.Qd3 h5
7.Rc4 g5 8.Raa4 Qb2 9.Qe3 Qb1
10.Qe2 g4+ 11.Rxg4+ hxg4+ 12.Rxg4+ Kf8
13.Rf4 Qh7+ 14.Nh4 Qh6 15.f3 Qg5 (1.764.573.579) 608

20 48:21 +3.71 3...g5 4.Qc4 Rd4 5.Qf1 g4 6.Kg1 Bxf3
7.Rd3 Qc6 8.Rc1 Kg7 9.a3 Be5
10.Rxd4 Bxd4 11.Qd3 e5 12.Qf5 f6
13.Qc2 a5 (1.764.573.579) 608

20 48:21 +2.70 3...Rd4 4.Qh5 Be4 5.Qg4 Bf5 6.Qxf5 exf5
7.Nxd4 Bxd4 8.c6 Bb6 9.Rd3 Qe5
10.Rdc3 Bc7 11.Rc5 Qe7 12.R2c4 g6
13.h3 Kf8 14.Rd5 (1.764.573.579) 608
_______________________________________________________________

21 77:04 +5.29 3...Qe5 4.Kh3 Qa1 5.Qc4 Rh1 6.Qd3 h5
7.Rc4 g5 8.Raa4 Qb2 9.Nd2 Rd1 10.Qc2 Qxc2
11.Rxc2 Bxa4 12.Rc4 Bc6 13.Ne4 g4+
14.Kg2 Bc3 15.f3 (2.814.043.024) 608

21 77:04 +3.75 3...g5 4.Qc4 Rd4 5.Qf1 g4 6.Kg1 Bxf3
7.Rd3 Qc6 8.Rc1 Kg7 9.a3 Be5 10.Rxd4 Bxd4
11.Qc4 e5 12.Re1 Qxc5 13.Qxc5 Bxc5
14.Rxe5 Bxa3 (2.814.043.024) 608

21 77:04 +2.94 3...Rd4 4.Qh5 Be4 5.Rc1 Bg6 6.Qh3 Bf5
7.Qxf5 exf5 8.Nxd4 Bxd4 9.Rd3 Qc6+
10.Kg1 Bb2 11.Rc2 Bf6 12.Rd6 Qe4
13.Rdd2 Bg5 14.f4 Bf6 (2.814.043.024) 608
_______________________________________________________________

22 146:00 +5.53 3...Qe5 4.Kh3 Qa1 5.Qc4 Rh1 6.Ne1 Rxe1
7.f3 h5 8.Rg2 Qe5 9.Qf4 Qxc5 10.Rb3 Kh7
11.a3 Rh1 12.Re2 Qg1 13.Rg2 Qf1
14.g4 (5.356.417.039) 611

22 146:00 +3.97 3...g5 4.Qc4 Rd4 5.Qf1 g4 6.Kg1 Bxf3
7.Rd3 Qc6 8.Rc1 h5 9.Rxd4 Bxd4
10.Rc4 e5 11.Qc1 Kf8 12.Qg5 Qd5
13.Qh6+ Ke7 14.Qc1 Kd7 15.Qc2 (5.356.417.039) 611

22 146:00 +3.03 3...Rd4 4.Qh5 Be4 5.Rc1 Bg6 6.Qh3 Bf5
7.Qxf5 exf5 8.Nxd4 Bxd4 9.Rd3 Qc6+
10.Kg1 Be5 11.f4 Bf6 12.Kf2 Kh7
13.h3 Be7 14.Rdc3 Kg6 15.Ke3 (5.356.417.039) 611
______________________________________________________________

23 260:31 +5.97 3...Qe5 4.Kh3 Qa1 5.Qc4 Rh1 6.Ne1 Rxe1
7.f3 h5 8.Rg2 Qe5 9.Qf4 Qxc5 10.Rb3 Kh7
11.a4 Ra1 12.Re2 Rxa4 13.Qe3 Qf5+
14.Kg2 Bb5 15.Rd2 (9.571.151.092) 612

best move: Qc7-e5 time: 297:44.938 min n/s: 611.458 nodes: 10.923.630.206
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