Test Position: Rybka-Scaramanga (b6!)

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

Re: Test Position: Rybka-Scaramanga (b6!)

Post by zullil »

Houdini wrote: 37.Ne4 appears to be about equally good, see for example the spectacular line 37.Ne4 Qb2 38.Bb3!! Qxb3 39.b6!! which leads to the following position:

[D]r4k2/1np1rbb1/1P2P2p/p2P4/2R1NQ2/1q6/5PP1/2R3K1 b - - 0 39
A crushing position for White despite being two pieces behind!
Crafty finds this continuation, but not quickly:

Code: Select all

Crafty v23.4 (16 cpus)

White(1): setboard r4k2/1np1rbb1/4P2p/pP1P4/2R2Q2/q1N5/2B2PP1/2R3K1 w - - 0 37
White(1): st 28800
search time set to 28800.00.
White(1): display

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

White&#40;1&#41;&#58; display stats
display statistics at end of each search.
White&#40;1&#41;&#58; go
              time limit 480&#58;00 (+0.00&#41; &#40;480&#58;00&#41;
              depth   time  score   variation &#40;1&#41;
starting thread 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 <done>
                8     0.07   1.52   1. Bh7 Qd6 2. exf7 Rxf7 3. Bf5 Qxf4
                                    4. Rxf4 Re8
                8->   0.07   1.52   1. Bh7 Qd6 2. exf7 Rxf7 3. Bf5 Qxf4
                                    4. Rxf4 Re8
                9     0.08   1.51   1. Bh7 Qd6 2. exf7 Qxf4 3. Rxf4 Rxf7
                                    4. Rxf7+ Kxf7 5. Be4
                9->   0.09   1.51   1. Bh7 Qd6 2. exf7 Qxf4 3. Rxf4 Rxf7
                                    4. Rxf7+ Kxf7 5. Be4
               10     0.12   1.75   1. Bh7 Qd6 2. exf7 Qxf4 3. Rxf4 Rxf7
                                    4. Rg4 h5 5. Rg5 h4
               10->   0.13   1.75   1. Bh7 Qd6 2. exf7 Qxf4 3. Rxf4 Rxf7
                                    4. Rg4 h5 5. Rg5 h4
               11     0.15   1.59   1. Bh7 Qd6 2. exf7 Qxf4 3. Rxf4 Rxf7
                                    4. Rg4 Nd6 5. Bg6 Re7 6. Rf4+ Kg8
               11->   0.17   1.59   1. Bh7 Qd6 2. exf7 Qxf4 3. Rxf4 Rxf7
                                    4. Rg4 Nd6 5. Bg6 Re7 6. Rf4+ Kg8 &#40;s=3&#41;
               12     0.22   1.74   1. Bh7 Qd6 2. Bg6 Qxf4 3. Rxf4 Nd6
                                    4. exf7 Be5 5. Rf3 Nxf7 6. Re1 Bxc3
                                    7. Rxe7 Kxe7 8. Rxc3 &#40;s=2&#41;
               12->   0.28   1.74   1. Bh7 Qd6 2. Bg6 Qxf4 3. Rxf4 Nd6
                                    4. exf7 Be5 5. Rf3 Nxf7 6. Re1 Bxc3
                                    7. Rxe7 Kxe7 8. Rxc3
               13     0.35     -1   1. Bh7?                           
               13     0.38   1.14   1. Bh7 Nd6 2. Nb1 Qb3 3. Nd2 Qxb5 4.
                                    Rxc7 Qb4 5. Qxb4 axb4 6. Rxe7 Kxe7
                                    7. Rc7+ Kf6 8. exf7 Nxf7
               13     0.79   1.69   1. Ne4 Qb2 2. exf7 Rxf7 3. Qe3 Re8
                                    4. Bd3 Ree7 5. f4 Qxb5 6. Rxc7 Qxd5
                                    7. Rc8+ Nd8
               13->   0.84   1.69   1. Ne4 Qb2 2. exf7 Rxf7 3. Qe3 Re8
                                    4. Bd3 Ree7 5. f4 Qxb5 6. Rxc7 Qxd5
                                    7. Rc8+ Nd8 &#40;s=2&#41;
               14     0.96   1.79   1. Ne4 Qb2 2. Bd3 Qe5 3. Qxe5 Bxe5
                                    4. exf7 a4 5. Rc6 Bf4 6. Ra6 Rd8 7.
                                    Re1 Rxd5
               14->   1.09   1.79   1. Ne4 Qb2 2. Bd3 Qe5 3. Qxe5 Bxe5
                                    4. exf7 a4 5. Rc6 Bf4 6. Ra6 Rd8 7.
                                    Re1 Rxd5 &#40;s=2&#41;
               15     1.26   1.83   1. Ne4 Qb2 2. Bd3 Qe5 3. Qxe5 Bxe5
                                    4. exf7 a4 5. Rc6 Bf4 6. Re1 Rd8 7.
                                    Bc2 Rxd5 8. Bxa4 Kxf7
               15->   1.50   1.83   1. Ne4 Qb2 2. Bd3 Qe5 3. Qxe5 Bxe5
                                    4. exf7 a4 5. Rc6 Bf4 6. Re1 Rd8 7.
                                    Bc2 Rxd5 8. Bxa4 Kxf7 &#40;s=3&#41;
               16     1.84   1.76   1. Ne4 Qb2 2. Bd3 Qe5 3. Qxe5 Bxe5
                                    4. exf7 Rd8 5. Rc6 Bf4 6. Re1 Rxd5
                                    7. Bc4 Rc5 8. Rxc5 Nxc5 &#40;s=2&#41;
               16     2.66     +1   1. Bg6!                           
               16     3.09     +3   1. Bg6!                           
               16     5.17   3.01   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qf3 Rxc7 5. Rxc7 Bf6 6. exf7 Nxb5 7.
                                    Rb7 Nd6 8. Rd7 a4
               16->   5.17   3.01   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qf3 Rxc7 5. Rxc7 Bf6 6. exf7 Nxb5 7.
                                    Rb7 Nd6 8. Rd7 a4
               17     5.39   3.10   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qf3 Rxc7 5. Rxc7 Bf6 6. exf7 Nxb5 7.
                                    Rc6 Nd6 8. Nc3 a4 9. Nb5 Qe1+ 10. Kh2
               17->   5.71   3.10   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qf3 Rxc7 5. Rxc7 Bf6 6. exf7 Nxb5 7.
                                    Rc6 Nd6 8. Nc3 a4 9. Nb5 Qe1+ 10. Kh2
                                    &#40;s=4&#41;
               18     6.11   2.98   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qf3 Qf6 5. Qxf6 Bxf6 6. Bxf7 Nxf7 7.
                                    exf7 Rxc7 8. Rxc7 Rd8 9. Rc6 Kxf7 10.
                                    Rc7+ Be7 &#40;s=3&#41;
               18->   7.37   2.98   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qf3 Qf6 5. Qxf6 Bxf6 6. Bxf7 Nxf7 7.
                                    exf7 Rxc7 8. Rxc7 Rd8 9. Rc6 Kxf7 10.
                                    Rc7+ Be7 &#40;s=6&#41;
               19     8.11   2.93   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qf3 Qf6 5. Qxf6 Bxf6 6. Bxf7 Nxf7 7.
                                    Rxe7 Bxe7 8. exf7 Kxf7 9. Rc6 Rd8 10.
                                    Nc3 &#40;s=5&#41;
               19->  10.79   2.93   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qf3 Qf6 5. Qxf6 Bxf6 6. Bxf7 Nxf7 7.
                                    Rxe7 Bxe7 8. exf7 Kxf7 9. Rc6 Rd8 10.
                                    Nc3 &#40;s=5&#41;
               20    12.16   2.76   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qf3 Qf6 5. Qxf6 Bxf6 6. Bxf7 Nxf7 7.
                                    exf7 Rxc7 8. Rxc7 Rd8 9. Nc3 Bxc3 10.
                                    Rxc3 Rxd5 &#40;s=4&#41;
               20->  18.46   2.76   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qf3 Qf6 5. Qxf6 Bxf6 6. Bxf7 Nxf7 7.
                                    exf7 Rxc7 8. Rxc7 Rd8 9. Nc3 Bxc3 10.
                                    Rxc3 Rxd5 &#40;s=5&#41;
               21    21.12   2.77   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qxe5 Bxe5 5. Bxf7 Nxf7 6. Rxe7 Kxe7
                                    7. exf7 Kxf7 8. b6 Rd8 9. Rc5 a4 10.
                                    Na3 Bd6 11. Rc3 &#40;s=4&#41;
               21->  32.40   2.77   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Qe5 4.
                                    Qxe5 Bxe5 5. Bxf7 Nxf7 6. Rxe7 Kxe7
                                    7. exf7 Kxf7 8. b6 Rd8 9. Rc5 a4 10.
                                    Na3 Bd6 11. Rc3 &#40;s=6&#41;
               22    40.91   2.60   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Be5 4.
                                    Qxh6+ Bg7 5. Qf4 Be5 6. Qf3 Rxc7 7.
                                    Rxc7 Ra7 8. Rc6 Kg7 9. Bd3 Be8 10.
                                    b6 Bxc6 11. bxa7 Qc1+ 12. Bf1 Ba8 &#40;s=5&#41;
               22->   1&#58;28   2.60   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Be5 4.
                                    Qxh6+ Bg7 5. Qf4 Be5 6. Qf3 Rxc7 7.
                                    Rxc7 Ra7 8. Rc6 Kg7 9. Bd3 Be8 10.
                                    b6 Bxc6 11. bxa7 Qc1+ 12. Bf1 Ba8 &#40;s=6&#41;
               23     1&#58;47   2.28   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Be5 4.
                                    Qxh6+ Bg7 5. Qf4 Be5 6. Qf3 Rxc7 7.
                                    Rxc7 Ra7 8. Rc6 Kg7 9. Bd3 Be8 10.
                                    b6 Bxc6 11. bxa7 Qc1+ 12. Bf1 Ba8 13.
                                    Qg4+ Kf6 &#40;s=5&#41;
               23->   4&#58;20   2.28   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Be5 4.
                                    Qxh6+ Bg7 5. Qf4 Be5 6. Qf3 Rxc7 7.
                                    Rxc7 Ra7 8. Rc6 Kg7 9. Bd3 Be8 10.
                                    b6 Bxc6 11. bxa7 Qc1+ 12. Bf1 Ba8 13.
                                    Qg4+ Kf6 &#40;s=7&#41;
               24     4&#58;51     -1   1. Bg6?                           
               24     5&#58;02   1.92   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Be5 4.
                                    Qxh6+ Bg7 5. Qf4 Be5 6. Qg5 Bf6 7.
                                    Qg3 Be5 8. Qh4 Nf5 9. Bxf5 Bxc7 10.
                                    Qh6+ Qg7 11. Qxg7+ Kxg7 12. exf7 Bf4
                                    13. f8=R Rxf8 &#40;s=6&#41;
               24->  18&#58;30   1.92   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Be5 4.
                                    Qxh6+ Bg7 5. Qf4 Be5 6. Qg5 Bf6 7.
                                    Qg3 Be5 8. Qh4 Nf5 9. Bxf5 Bxc7 10.
                                    Qh6+ Qg7 11. Qxg7+ Kxg7 12. exf7 Bf4
                                    13. f8=R Rxf8 &#40;s=16&#41;
               25    20&#58;00   1.82   1. Bg6 Nd6 2. Nb1 Qb2 3. Rxc7 Be5 4.
                                    Qxh6+ Bg7 5. Qf4 Be5 6. Qg5 Bf6 7.
                                    Qg3 Be5 8. Qh3 Bxg6 9. Qh6+ Bg7 10.
                                    Qxg6 Rae8 11. R1c6 Rxc7 12. Rxc7 Re7
                                    13. Rc6 Qe5 14. Qd3 Qe1+ 15. Kh2 &#40;s=15&#41;
               25    34&#58;43   2.09   1. Ne4 Qb2 2. Re1 Qe5 3. Qxe5 Bxe5
                                    4. exf7 Rb8 5. Rc6 Nd8 6. Ra6 Nxf7
                                    7. Nc5 Bd4 8. Ne6+ Kg8 9. Re4 Bb6 10.
                                    Rh4 Rd7 11. Rh5 Re7 12. Kf1 Rbe8 13.
                                    Bg6 Rd7 &#40;s=13&#41;
               25->  48&#58;59   2.09   1. Ne4 Qb2 2. Re1 Qe5 3. Qxe5 Bxe5
                                    4. exf7 Rb8 5. Rc6 Nd8 6. Ra6 Nxf7
                                    7. Nc5 Bd4 8. Ne6+ Kg8 9. Re4 Bb6 10.
                                    Rh4 Rd7 11. Rh5 Re7 12. Kf1 Rbe8 13.
                                    Bg6 Rd7 &#40;s=5&#41;
               26    56&#58;39   2.20   1. Ne4 Qb2 2. exf7 Rd8 3. Rd1 Rxf7
                                    4. Qh4 Re8 5. Ba4 Nd6 6. Nxd6 cxd6
                                    7. Bc2 Qf6 8. Qxf6 Rxf6 9. Be4 Rf4
                                    10. Re1 Rb8 11. Rb1 Rf7 12. Rb3 Be5
                                    13. b6 Rbb7 &#40;s=4&#41;
               26->  76&#58;54   2.20   1. Ne4 Qb2 2. exf7 Rd8 3. Rd1 Rxf7
                                    4. Qh4 Re8 5. Ba4 Nd6 6. Nxd6 cxd6
                                    7. Bc2 Qf6 8. Qxf6 Rxf6 9. Be4 Rf4
                                    10. Re1 Rb8 11. Rb1 Rf7 12. Rb3 Be5
                                    13. b6 Rbb7 &#40;s=2&#41;
               27    85&#58;27   2.22   1. Ne4 Qb2 2. exf7 Rd8 3. Rd1 Rxf7
                                    4. Qh4 Re8 5. Ba4 Nd6 6. Nxd6 cxd6
                                    7. Bc2 Qf6 8. Qxf6 Rxf6 9. Be4 Rf4
                                    10. f3 Be5 11. Re1 Rf7 12. Kf2 Rb8
                                    13. Bd3 Re8 14. Rb1
               27-> 131&#58;41   2.22   1. Ne4 Qb2 2. exf7 Rd8 3. Rd1 Rxf7
                                    4. Qh4 Re8 5. Ba4 Nd6 6. Nxd6 cxd6
                                    7. Bc2 Qf6 8. Qxf6 Rxf6 9. Be4 Rf4
                                    10. f3 Be5 11. Re1 Rf7 12. Kf2 Rb8
                                    13. Bd3 Re8 14. Rb1 &#40;s=2&#41;
               28   175&#58;03     +1   1. Ne4!                           
               28   256&#58;28   3.08   1. Ne4 Qb2 2. Bb3 Qxb3 3. b6 cxb6 4.
                                    Rc8+ Nd8 5. d6 Rxe6 6. Rxa8 Bb2 7.
                                    Rxd8+ Kg7 8. Re1 Be5 9. Qd2 Qb4 10.
                                    Qxb4 axb4 11. d7 Bf6 12. Rc8 b3 13.
                                    d8=Q Bxd8 14. Rxd8 b2 15. f3 Kg6
               28-> 359&#58;14   3.08   1. Ne4 Qb2 2. Bb3 Qxb3 3. b6 cxb6 4.
                                    Rc8+ Nd8 5. d6 Rxe6 6. Rxa8 Bb2 7.
                                    Rxd8+ Kg7 8. Re1 Be5 9. Qd2 Qb4 10.
                                    Qxb4 axb4 11. d7 Bf6 12. Rc8 b3 13.
                                    d8=Q Bxd8 14. Rxd8 b2 15. f3 Kg6 &#40;s=2&#41;
              time=480&#58;00  mat=-1  n=826456892761  fh=96%  nps=28.7M  
              extensions=2071.2M qchecks=2759.0M reduced=2085.0M pruned=2742.1M
              predicted=0  evals=2847.2M  50move=0  EGTBprobes=17K  hits=17K
              SMP->  splits=66921293  aborts=12514344  data=376/1024  elap=480&#58;00
terminating SMP processes.
White&#40;1&#41;&#58; Ne4
              time used&#58; 480&#58;00
Top
Robert Flesher
Posts: 1280
Joined: Tue Aug 18, 2009 3:06 am

Re: Test Position: Rybka-Scaramanga (b6!)

Post by Robert Flesher »

Albert Silver wrote:In the last round of Leiden, Rybka was the obvious crushing favbortie against Scaramanga, and in the game it produced the following impressive shot:

[D]r4k2/1np1rbb1/4P2p/pP1P4/2R2Q2/q1N5/2B2PP1/2R3K1 w - - 0 37

37.b6!!

Instanlty ! So not problem for Critter 0.90. Maybe not so impressive ?

New game
r4k2/1np1rbb1/4P2p/pP1P4/2R2Q2/q1N5/2B2PP1/2R3K1 w - - 0 1

Analysis by Critter 0.90 64-bit SSE4:

1.Bg6 Nd6
+- (1.64) Depth: 2/2 00:00:00
1.b6 cxb6 2.Nb5 Qb2 3.Bg6 Qf6 4.Bxf7 Qxf4 5.Rxf4 Rd8 6.Bg6+ Kg8 7.Rf5 a4 8.Rc6 Bb2 9.Bf7+ Kg7 10.Rxb6 a3 11.Ra6 Nc5 12.Rxa3 Bxa3 13.Nxa3 Ne4 14.Nc4 Rc7 15.Rf4 Nd6 16.Nxd6 Rxd6
+- (2.45) Depth: 2/2 00:00:00
1.Bh7 Qd6 2.Qh4 Qe5 3.Ne4 Qh5 4.Qg3 Rd8 5.Rxc7 Rxc7 6.Qxc7 Bxe6 7.Nc5 Qxd5 8.Nxb7 Re8 9.Qf4+ Bf7 10.Nxa5 Qe5 11.Qb4+ Qe7 12.Qg4 Qg5
+- (2.35) Depth: 5/7 00:00:00
1.Bh7 Qd6 2.Qh4 Qe5 3.Ne4 Qh5 4.Qg3 Rd8 5.Rxc7 Rxc7 6.Qxc7 Bxe6 7.Nc5 Qxd5 8.Nxb7 Re8 9.Qf4+ Bf7 10.Nxa5 Qe5 11.Qb4+ Qe7 12.Qg4 Qg5
+- (2.35) Depth: 6/9 00:00:00
1.Bh7 Qd6 2.Qh4 Qe5 3.Ne4 Qh5 4.Qg3 Rd8 5.Rxc7 Rxc7 6.Qxc7 Bxe6 7.Nc5 Qxd5 8.Nxb7 Re8 9.Qf4+ Bf7 10.Nxa5 Qe5 11.Qb4+ Qe7 12.Qg4 Qg5
+- (2.35) Depth: 6/9 00:00:00
1.Bh7 Qd6 2.Qh4 Qe5 3.Ne4 Qh5 4.Qg3 Rd8 5.Rxc7 Rxc7 6.Qxc7 Bxe6 7.Nc5 Qxd5 8.Nxb7 Re8 9.Qf4+ Bf7 10.Nxa5 Qe5 11.Qb4+ Qe7 12.Qg4 Qg5
+- (2.35) Depth: 6/9 00:00:00
1.Bh7 Qd6 2.Qh4 Qe5 3.Ne4 Qh5 4.Qg3 Rd8 5.Rxc7 Rxc7 6.Qxc7 Bxe6 7.Nc5 Qxd5 8.Nxb7 Re8 9.Qf4+ Bf7 10.Nxa5 Qe5 11.Qb4+ Qe7 12.Qg4 Qg5
+- (2.35) Depth: 6/9 00:00:00 4kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bh7+ Kxh7 10.Qg6+ Kh8 11.Re8+ Rxe8 12.Qxe8+ Kh7 13.Qxd7 Nd6 14.Nb1 Qd3 15.Rc1 Qxd5 16.Nc3 Qe5
+- (2.62) Depth: 6/9 00:00:00 5kN
1.b6 cxb6 2.Nb5 Qb2 3.Bg6 Qf6 4.Bxf7 Qxf4 5.Rxf4 Rd8 6.Bg6+ Kg8 7.Rf5 a4 8.Rc6 Bb2 9.Bf7+ Kg7 10.Rxb6 a3 11.Ra6 Nc5 12.Rxa3 Bxa3 13.Nxa3 Ne4 14.Nc4 Rc7 15.Rf4 Nd6 16.Nxd6 Rxd6
+- (2.45) Depth: 7/9 00:00:00 5kN
1.Bg6 Nd6 2.Nb1 Qb2 3.Rxc7 Qe5 4.Qf3 Rxc7 5.Rxc7 Qe1+ 6.Kh2 Qe5+ 7.Kh3 Qf6 8.Bxf7 Qxf3+ 9.gxf3 Nxb5 10.Rb7 Nd6 11.Rd7 Ra6 12.Bg6 Bf6 13.Bd3 Rb6 14.Nd2 Be7 15.Ra7 Nb7 16.Nc4 Rb3
+- (2.51) Depth: 8/9 00:00:00 7kN
1.Bg6 Nd6 2.Nb1 Qb2 3.Rxc7 Qe5 4.Qf3 Rxc7 5.Rxc7 Qe1+ 6.Kh2 Qe5+ 7.Kh3 Qf6 8.Bxf7 Qxf3+ 9.gxf3 Nxb5 10.Rb7 Nd6 11.Rd7 Ra6 12.Bg6 Bf6 13.Bd3 Rb6 14.Nd2 Be7 15.Ra7 Nb7 16.Nc4 Rb3
+- (2.51) Depth: 9/12 00:00:00 9kN
1.Bg6 Nd6 2.Nb1 Qb2 3.Rxc7 Qe5 4.Qf3 Rxc7 5.Rxc7 Qe1+ 6.Kh2 Qe5+ 7.Kh3 Qf6 8.Bxf7 Qxf3+ 9.gxf3 Nxb5 10.Rb7 Nd6 11.Rd7 Ra6 12.Bg6 Bf6 13.Bd3 Rb6 14.Nd2 Be7 15.Ra7 Nb7 16.Nc4 Rb3
+- (2.39) Depth: 10/24 00:00:00 41kN
1.Bg6 Nd6 2.Nb1 Qb2 3.Rxc7 Qe5 4.Qf3 Rxc7 5.Rxc7 Qe1+ 6.Kh2 Qe5+ 7.Kh3 Qf6 8.Bxf7 Qxf3+ 9.gxf3 Nxb5 10.Rb7 Nd6 11.Rd7 Ra6 12.Bg6 Bf6 13.Bd3 Rb6 14.Nd2 Be7 15.Ra7 Nb7 16.Nc4 Rb3
+- (2.27) Depth: 10/24 00:00:00 98kN
1.b6 Nd6 2.Rxc7 Bxc3 3.Rxe7 Kxe7 4.exf7 Kf8 5.Bg6 Rd8 6.Qxh6+ Bg7 7.Qg5 Bf6
+- (2.48) Depth: 10/24 00:00:00 126kN
1.b6 Nd6 2.Rxc7 Bxc3 3.Rxe7 Kxe7 4.exf7 Kf8 5.Bg6 Rd8 6.Qxh6+ Bg7 7.Qg5 Bf6
+- (2.59) Depth: 11/24 00:00:00 129kN
1.b6 Bxc3 2.bxc7 Rc8 3.Bg6 Qd6 4.R1xc3 Qxf4 5.Rxf4 Rcxc7 6.Rxc7 Rxc7 7.Bxf7 Nd6 8.Bh5+ Ke7 9.Rg4 Nf5 10.Kh2 Rc2
+- (2.40) Depth: 11/32 00:00:00 179kN
1.b6 Bxc3 2.bxc7 Rc8 3.Bg6 Qd6 4.R1xc3 Qxf4 5.Rxf4 Rcxc7 6.Rxc7 Rxc7 7.Bxf7 Nd6 8.Bh5+ Ke7 9.Rg4 Nf5 10.Kh2 Rc2
+- (2.52) Depth: 12/32 00:00:00 199kN
1.b6 cxb6 2.Nb5 Qb2 3.Bg6 Qf6 4.Bxf7 Qxf4 5.Rxf4 Rd8 6.Rf5 a4 7.Rc6 Bb2 8.Rxb6 a3 9.Ra6 Kg7 10.d6 Nxd6 11.Nxd6 Rxd6 12.Rxd6 a2 13.Rd1 a1Q 14.Rxa1 Bxa1
+- (2.62) Depth: 12/37 00:00:00 287kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Rg6 Nd6 8.Rcg4 Qc1+ 9.Kh2 Rdd7 10.Ne4 Qxc2 11.Nxd6 h5
+- (2.61) Depth: 13/37 00:00:00 338kN
1.b6 cxb6 2.Nb5 Qb2 3.Bg6 Qf6 4.Bxf7 Qxf4 5.Rxf4 Rd8 6.Rf5 a4 7.Rc6 Bb2 8.Rxb6 a3 9.Ra6 Kg7 10.d6 Nxd6 11.Nxd6 Rxd6 12.Rxd6 a2 13.Rd1 a1Q 14.Rxa1 Bxa1
+- (2.62) Depth: 14/47 00:00:00 1573kN
1.b6 cxb6 2.Nb5 Qb2 3.Bg6 Qf6 4.Bxf7 Qxf4 5.Rxf4 Rd8 6.Rf5 a4 7.Rc6 Bb2 8.Rxb6 a3 9.Ra6 Kg7 10.d6 Nxd6 11.Nxd6 Rxd6 12.Rxd6 a2 13.Rd1 a1Q 14.Rxa1 Bxa1
+- (2.50) Depth: 15/47 00:00:00 2172kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Bd3 Qd2 10.Re4 Kg8 11.exf7+ Rxf7 12.Re8+ Rf8 13.Rb2 Qa5 14.Rxf8+ Bxf8 15.Re2 Qa7 16.d6 Nf7
+- (2.61) Depth: 15/47 00:00:00 2200kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Rg4 Qf6 11.Rf4 Qe5 12.Ne3 Kg8 13.Qg4 Qg5 14.exf7+ Nxf7 15.Rxa4 Rxa4 16.Qxa4
+- (2.69) Depth: 16/48 00:00:00 4507kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Rg4 Qf6 11.Rf4 Qe5 12.Ne3 Kg8 13.Qg4 Qg5 14.exf7+ Nxf7 15.Rxa4 Rxa4 16.Qxa4
+- (2.69) Depth: 17/51 00:00:01 8374kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Rg4 Qf6 11.Rf4 Qe5 12.Ne3 Kg8 13.Qg4 Qg5 14.exf7+ Nxf7 15.Rxa4 Rxa4 16.Qxa4
+- (2.57) Depth: 18/51 00:00:03 16423kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Rg4 Qf6 11.Rf4 Qe5 12.Ne3 Kg8 13.Qg4 Qg5 14.exf7+ Nxf7 15.Rxa4 Rxa4 16.Qxa4
+- (2.45) Depth: 18/51 00:00:04 23644kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Ne3 a3 11.Rg4 Qxg4 12.Nxg4 a2 13.d6 axb1Q+ 14.Bxb1 Rxe6 15.Qxa8 Rxd6 16.Qa3 Nb7
+- (2.49) Depth: 18/51 00:00:05 24225kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Ne3 a3 11.Rg4 Qxg4 12.Nxg4 a2 13.d6 axb1Q+ 14.Bxb1 Rxe6 15.Qxa8 Rxd6 16.Qa3 Nb7
+- (2.61) Depth: 19/51 00:00:05 24263kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Ne3 a3 11.Rg4 Qxg4 12.Nxg4 a2 13.d6 axb1Q+ 14.Bxb1 Rxe6 15.Qxa8 Rxd6 16.Qa3 Nb7
+- (2.73) Depth: 19/51 00:00:07 39489kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bb1 Nd6 10.Rg4 Nb5 11.Nxb5 Qxg3 12.Rxg3 Rxd5 13.Nc3 Rg5 14.Ba2 Kh7 15.Rge3 Rc5 16.Re7 Rd2
+- (2.74) Depth: 19/51 00:00:09 57452kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bb1 Nd6 10.Rg4 Nb5 11.Nxb5 Qxg3 12.Rxg3 Rxd5 13.Nc3 Rg5 14.Ba2 Kh7 15.Rge3 Rc5 16.Re7 Rd2
+- (2.62) Depth: 20/51 00:00:11 67697kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bb1 Nd6 10.Rg4 Nb5 11.Nxb5 Qxg3 12.Rxg3 Rxd5 13.Nc3 Rg5 14.Ba2 Kh7 15.Rge3 Rc5 16.Re7 Rd2
+- (2.74) Depth: 20/51 00:00:14 86987kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bb1 Nd6 10.Rg4 Nb5 11.Nxb5 Qxg3 12.Rxg3 Rxd5 13.Nc3 Rg5 14.Ba2 Kh7 15.Rf3 Rc5 16.Bb1+ Kg8
+- (2.70) Depth: 21/51 00:00:20 133050kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bb1 Nd6 10.Rg4 Nb5 11.Nxb5 Qxg3 12.Rxg3 Rxd5 13.Nc3 Rg5 14.Ba2 Kh7 15.Rf3 Rc5 16.Bb1+ Kg8
+- (2.82) Depth: 22/57 00:00:57 418741kN

(, Microsoft 30.11.2010)
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Albert Silver
Posts: 3019
Joined: Wed Mar 08, 2006 9:57 pm
Location: Rio de Janeiro, Brazil

Re: Test Position: Rybka-Scaramanga (b6!)

Post by Albert Silver »

Robert Flesher wrote:
Albert Silver wrote:In the last round of Leiden, Rybka was the obvious crushing favbortie against Scaramanga, and in the game it produced the following impressive shot:

[D]r4k2/1np1rbb1/4P2p/pP1P4/2R2Q2/q1N5/2B2PP1/2R3K1 w - - 0 37

37.b6!!

Instanlty ! So not problem for Critter 0.90. Maybe not so impressive ?

New game
r4k2/1np1rbb1/4P2p/pP1P4/2R2Q2/q1N5/2B2PP1/2R3K1 w - - 0 1

Analysis by Critter 0.90 64-bit SSE4:

1.Bg6 Nd6
+- (1.64) Depth: 2/2 00:00:00
1.b6 cxb6 2.Nb5 Qb2 3.Bg6 Qf6 4.Bxf7 Qxf4 5.Rxf4 Rd8 6.Bg6+ Kg8 7.Rf5 a4 8.Rc6 Bb2 9.Bf7+ Kg7 10.Rxb6 a3 11.Ra6 Nc5 12.Rxa3 Bxa3 13.Nxa3 Ne4 14.Nc4 Rc7 15.Rf4 Nd6 16.Nxd6 Rxd6
+- (2.45) Depth: 2/2 00:00:00
1.Bh7 Qd6 2.Qh4 Qe5 3.Ne4 Qh5 4.Qg3 Rd8 5.Rxc7 Rxc7 6.Qxc7 Bxe6 7.Nc5 Qxd5 8.Nxb7 Re8 9.Qf4+ Bf7 10.Nxa5 Qe5 11.Qb4+ Qe7 12.Qg4 Qg5
+- (2.35) Depth: 5/7 00:00:00
1.Bh7 Qd6 2.Qh4 Qe5 3.Ne4 Qh5 4.Qg3 Rd8 5.Rxc7 Rxc7 6.Qxc7 Bxe6 7.Nc5 Qxd5 8.Nxb7 Re8 9.Qf4+ Bf7 10.Nxa5 Qe5 11.Qb4+ Qe7 12.Qg4 Qg5
+- (2.35) Depth: 6/9 00:00:00
1.Bh7 Qd6 2.Qh4 Qe5 3.Ne4 Qh5 4.Qg3 Rd8 5.Rxc7 Rxc7 6.Qxc7 Bxe6 7.Nc5 Qxd5 8.Nxb7 Re8 9.Qf4+ Bf7 10.Nxa5 Qe5 11.Qb4+ Qe7 12.Qg4 Qg5
+- (2.35) Depth: 6/9 00:00:00
1.Bh7 Qd6 2.Qh4 Qe5 3.Ne4 Qh5 4.Qg3 Rd8 5.Rxc7 Rxc7 6.Qxc7 Bxe6 7.Nc5 Qxd5 8.Nxb7 Re8 9.Qf4+ Bf7 10.Nxa5 Qe5 11.Qb4+ Qe7 12.Qg4 Qg5
+- (2.35) Depth: 6/9 00:00:00
1.Bh7 Qd6 2.Qh4 Qe5 3.Ne4 Qh5 4.Qg3 Rd8 5.Rxc7 Rxc7 6.Qxc7 Bxe6 7.Nc5 Qxd5 8.Nxb7 Re8 9.Qf4+ Bf7 10.Nxa5 Qe5 11.Qb4+ Qe7 12.Qg4 Qg5
+- (2.35) Depth: 6/9 00:00:00 4kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bh7+ Kxh7 10.Qg6+ Kh8 11.Re8+ Rxe8 12.Qxe8+ Kh7 13.Qxd7 Nd6 14.Nb1 Qd3 15.Rc1 Qxd5 16.Nc3 Qe5
+- (2.62) Depth: 6/9 00:00:00 5kN
1.b6 cxb6 2.Nb5 Qb2 3.Bg6 Qf6 4.Bxf7 Qxf4 5.Rxf4 Rd8 6.Bg6+ Kg8 7.Rf5 a4 8.Rc6 Bb2 9.Bf7+ Kg7 10.Rxb6 a3 11.Ra6 Nc5 12.Rxa3 Bxa3 13.Nxa3 Ne4 14.Nc4 Rc7 15.Rf4 Nd6 16.Nxd6 Rxd6
+- (2.45) Depth: 7/9 00:00:00 5kN
1.Bg6 Nd6 2.Nb1 Qb2 3.Rxc7 Qe5 4.Qf3 Rxc7 5.Rxc7 Qe1+ 6.Kh2 Qe5+ 7.Kh3 Qf6 8.Bxf7 Qxf3+ 9.gxf3 Nxb5 10.Rb7 Nd6 11.Rd7 Ra6 12.Bg6 Bf6 13.Bd3 Rb6 14.Nd2 Be7 15.Ra7 Nb7 16.Nc4 Rb3
+- (2.51) Depth: 8/9 00:00:00 7kN
1.Bg6 Nd6 2.Nb1 Qb2 3.Rxc7 Qe5 4.Qf3 Rxc7 5.Rxc7 Qe1+ 6.Kh2 Qe5+ 7.Kh3 Qf6 8.Bxf7 Qxf3+ 9.gxf3 Nxb5 10.Rb7 Nd6 11.Rd7 Ra6 12.Bg6 Bf6 13.Bd3 Rb6 14.Nd2 Be7 15.Ra7 Nb7 16.Nc4 Rb3
+- (2.51) Depth: 9/12 00:00:00 9kN
1.Bg6 Nd6 2.Nb1 Qb2 3.Rxc7 Qe5 4.Qf3 Rxc7 5.Rxc7 Qe1+ 6.Kh2 Qe5+ 7.Kh3 Qf6 8.Bxf7 Qxf3+ 9.gxf3 Nxb5 10.Rb7 Nd6 11.Rd7 Ra6 12.Bg6 Bf6 13.Bd3 Rb6 14.Nd2 Be7 15.Ra7 Nb7 16.Nc4 Rb3
+- (2.39) Depth: 10/24 00:00:00 41kN
1.Bg6 Nd6 2.Nb1 Qb2 3.Rxc7 Qe5 4.Qf3 Rxc7 5.Rxc7 Qe1+ 6.Kh2 Qe5+ 7.Kh3 Qf6 8.Bxf7 Qxf3+ 9.gxf3 Nxb5 10.Rb7 Nd6 11.Rd7 Ra6 12.Bg6 Bf6 13.Bd3 Rb6 14.Nd2 Be7 15.Ra7 Nb7 16.Nc4 Rb3
+- (2.27) Depth: 10/24 00:00:00 98kN
1.b6 Nd6 2.Rxc7 Bxc3 3.Rxe7 Kxe7 4.exf7 Kf8 5.Bg6 Rd8 6.Qxh6+ Bg7 7.Qg5 Bf6
+- (2.48) Depth: 10/24 00:00:00 126kN
1.b6 Nd6 2.Rxc7 Bxc3 3.Rxe7 Kxe7 4.exf7 Kf8 5.Bg6 Rd8 6.Qxh6+ Bg7 7.Qg5 Bf6
+- (2.59) Depth: 11/24 00:00:00 129kN
1.b6 Bxc3 2.bxc7 Rc8 3.Bg6 Qd6 4.R1xc3 Qxf4 5.Rxf4 Rcxc7 6.Rxc7 Rxc7 7.Bxf7 Nd6 8.Bh5+ Ke7 9.Rg4 Nf5 10.Kh2 Rc2
+- (2.40) Depth: 11/32 00:00:00 179kN
1.b6 Bxc3 2.bxc7 Rc8 3.Bg6 Qd6 4.R1xc3 Qxf4 5.Rxf4 Rcxc7 6.Rxc7 Rxc7 7.Bxf7 Nd6 8.Bh5+ Ke7 9.Rg4 Nf5 10.Kh2 Rc2
+- (2.52) Depth: 12/32 00:00:00 199kN
1.b6 cxb6 2.Nb5 Qb2 3.Bg6 Qf6 4.Bxf7 Qxf4 5.Rxf4 Rd8 6.Rf5 a4 7.Rc6 Bb2 8.Rxb6 a3 9.Ra6 Kg7 10.d6 Nxd6 11.Nxd6 Rxd6 12.Rxd6 a2 13.Rd1 a1Q 14.Rxa1 Bxa1
+- (2.62) Depth: 12/37 00:00:00 287kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Rg6 Nd6 8.Rcg4 Qc1+ 9.Kh2 Rdd7 10.Ne4 Qxc2 11.Nxd6 h5
+- (2.61) Depth: 13/37 00:00:00 338kN
1.b6 cxb6 2.Nb5 Qb2 3.Bg6 Qf6 4.Bxf7 Qxf4 5.Rxf4 Rd8 6.Rf5 a4 7.Rc6 Bb2 8.Rxb6 a3 9.Ra6 Kg7 10.d6 Nxd6 11.Nxd6 Rxd6 12.Rxd6 a2 13.Rd1 a1Q 14.Rxa1 Bxa1
+- (2.62) Depth: 14/47 00:00:00 1573kN
1.b6 cxb6 2.Nb5 Qb2 3.Bg6 Qf6 4.Bxf7 Qxf4 5.Rxf4 Rd8 6.Rf5 a4 7.Rc6 Bb2 8.Rxb6 a3 9.Ra6 Kg7 10.d6 Nxd6 11.Nxd6 Rxd6 12.Rxd6 a2 13.Rd1 a1Q 14.Rxa1 Bxa1
+- (2.50) Depth: 15/47 00:00:00 2172kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Bd3 Qd2 10.Re4 Kg8 11.exf7+ Rxf7 12.Re8+ Rf8 13.Rb2 Qa5 14.Rxf8+ Bxf8 15.Re2 Qa7 16.d6 Nf7
+- (2.61) Depth: 15/47 00:00:00 2200kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Rg4 Qf6 11.Rf4 Qe5 12.Ne3 Kg8 13.Qg4 Qg5 14.exf7+ Nxf7 15.Rxa4 Rxa4 16.Qxa4
+- (2.69) Depth: 16/48 00:00:00 4507kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Rg4 Qf6 11.Rf4 Qe5 12.Ne3 Kg8 13.Qg4 Qg5 14.exf7+ Nxf7 15.Rxa4 Rxa4 16.Qxa4
+- (2.69) Depth: 17/51 00:00:01 8374kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Rg4 Qf6 11.Rf4 Qe5 12.Ne3 Kg8 13.Qg4 Qg5 14.exf7+ Nxf7 15.Rxa4 Rxa4 16.Qxa4
+- (2.57) Depth: 18/51 00:00:03 16423kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Rg4 Qf6 11.Rf4 Qe5 12.Ne3 Kg8 13.Qg4 Qg5 14.exf7+ Nxf7 15.Rxa4 Rxa4 16.Qxa4
+- (2.45) Depth: 18/51 00:00:04 23644kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Ne3 a3 11.Rg4 Qxg4 12.Nxg4 a2 13.d6 axb1Q+ 14.Bxb1 Rxe6 15.Qxa8 Rxd6 16.Qa3 Nb7
+- (2.49) Depth: 18/51 00:00:05 24225kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Ne3 a3 11.Rg4 Qxg4 12.Nxg4 a2 13.d6 axb1Q+ 14.Bxb1 Rxe6 15.Qxa8 Rxd6 16.Qa3 Nb7
+- (2.61) Depth: 19/51 00:00:05 24263kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Be5 5.Qe3 Bg7 6.Qg3 Nd8 7.Qf3 Qc1+ 8.Nd1 a4 9.Rb1 Qg5 10.Ne3 a3 11.Rg4 Qxg4 12.Nxg4 a2 13.d6 axb1Q+ 14.Bxb1 Rxe6 15.Qxa8 Rxd6 16.Qa3 Nb7
+- (2.73) Depth: 19/51 00:00:07 39489kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bb1 Nd6 10.Rg4 Nb5 11.Nxb5 Qxg3 12.Rxg3 Rxd5 13.Nc3 Rg5 14.Ba2 Kh7 15.Rge3 Rc5 16.Re7 Rd2
+- (2.74) Depth: 19/51 00:00:09 57452kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bb1 Nd6 10.Rg4 Nb5 11.Nxb5 Qxg3 12.Rxg3 Rxd5 13.Nc3 Rg5 14.Ba2 Kh7 15.Rge3 Rc5 16.Re7 Rd2
+- (2.62) Depth: 20/51 00:00:11 67697kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bb1 Nd6 10.Rg4 Nb5 11.Nxb5 Qxg3 12.Rxg3 Rxd5 13.Nc3 Rg5 14.Ba2 Kh7 15.Rge3 Rc5 16.Re7 Rd2
+- (2.74) Depth: 20/51 00:00:14 86987kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bb1 Nd6 10.Rg4 Nb5 11.Nxb5 Qxg3 12.Rxg3 Rxd5 13.Nc3 Rg5 14.Ba2 Kh7 15.Rf3 Rc5 16.Bb1+ Kg8
+- (2.70) Depth: 21/51 00:00:20 133050kN
1.b6 Qd6 2.Qf3 Qa3 3.Rb1 cxb6 4.Rxb6 Kg8 5.exf7+ Rxf7 6.Qg3 Rd8 7.Bg6 Re7 8.Re6 Red7 9.Bb1 Nd6 10.Rg4 Nb5 11.Nxb5 Qxg3 12.Rxg3 Rxd5 13.Nc3 Rg5 14.Ba2 Kh7 15.Rf3 Rc5 16.Bb1+ Kg8
+- (2.82) Depth: 22/57 00:00:57 418741kN

(, Microsoft 30.11.2010)
:-) There is always some engine that finds these things so fast you barely have time to blink.
"Tactics are the bricks and sticks that make up a game, but positional play is the architectural blueprint."
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