Best move?

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

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Jack Lad
Posts: 8557
Joined: Wed Mar 08, 2006 10:01 pm
Location: UK

Best move?

Post by Jack Lad »

[d] 5q1k/2p3Rp/1p1rnP2/p4p2/2Q5/PP2P3/1B3P1P/7K w - - 0 1
Now cracks a noble heart.—Good night, sweet Princess, And flights of angels sing thee to thy rest!
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bob
Posts: 20943
Joined: Mon Feb 27, 2006 7:30 pm
Location: Birmingham, AL

Re: Best move?

Post by bob »

Jack Lad wrote:[d] 5q1k/2p3Rp/1p1rnP2/p4p2/2Q5/PP2P3/1B3P1P/7K w - - 0 1
My human eye likes Re7. Will try on Crafty later. There might be something to an immediate Qe6 but Re7 (to me) appears to make this thread more serious in addition to the advanced passer that is a problem for black as well...
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AdminX
Posts: 6363
Joined: Mon Mar 13, 2006 2:34 pm
Location: Acworth, GA

Re: Best move?

Post by AdminX »

bob wrote:
Jack Lad wrote:[d] 5q1k/2p3Rp/1p1rnP2/p4p2/2Q5/PP2P3/1B3P1P/7K w - - 0 1
My human eye likes Re7. Will try on Crafty later. There might be something to an immediate Qe6 but Re7 (to me) appears to make this thread more serious in addition to the advanced passer that is a problem for black as well...
My human eyes like Qxe6! Very nice tactical position! :wink: I like it.
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Best move?

Post by kgburcham »

[d] 5q1k/2p3Rp/1p1rnP2/p4p2/2Q5/PP2P3/1B3P1P/7K w - - 0 1

Here are the top 20 winning moves by one of the commercials.
If you have an audience you might want to sac the Queen with Qxe6 or maybe Rxc7. Of course if you want blood play Re7.
If you want to add some excitement, get up out of your chair, slowly look around and walk to the mens room after every move.


1. +- (12.50): 1.Re7 Rd1+ 2.Kg2 Qg8+ 3.Rg7 Nxg7 4.fxg7+ Qxg7+ 5.Bxg7+ Kxg7 6.Qxc7+ Kg8 7.Qxb6 Kf7 8.Qxa5
2. +- (10.70): 1.Qc2 Rd5 2.Re7 Kg8 3.f4 Qd8 4.f7+ Kf8 5.Re8+ Kxf7 6.Rxd8 Nxd8 7.Qxc7+ Ke6 8.Qxb6+ Kd7 9.Qh6 Nc6 10.Qxh7+ Kd6 11.Bc3 Ne7 12.Qh8
3. +- (10.41): 1.e4 c5 2.Qxe6 Rxe6 3.f7 Qxf7 4.Rg6+ Rf6 5.Bxf6+ Qxf6 6.Rxf6 fxe4 7.Rxb6 Kg7 8.Rc6 h5 9.Rxc5
4. +- (8.74): 1.h4 h6 2.Re7 Kg8 3.Rxe6 Rxe6 4.Qxe6+ Qf7 5.Qxf5 h5 6.Qc8+ Kh7 7.e4 c5 8.Qc6
5. +- (8.68): 1.h3 h6 2.Qh4 Nxg7 3.fxg7+ Qxg7 4.Bxg7+ Kxg7 5.Qe7+ Kg6 6.Qxc7 Rf6 7.h4 f4 8.exf4
6. +- (8.66): 1.Qe2 Nxg7 2.fxg7+ Qxg7 3.Bxg7+ Kxg7 4.Qc2 Rd7 5.Qxf5 Re7 6.e4 h6 7.f4 c5 8.Kg2
7. +- (8.63): 1.Kg1 Qa8 2.e4 h5 3.Qc1 f4 4.Re7 Kg8 5.f7+ Kf8 6.Re8+
8. +- (8.59): 1.f3 h6 2.Qh4 Nxg7 3.fxg7+ Qxg7 4.Bxg7+ Kxg7 5.Qe7+ Kg6 6.Qxc7 Re6 7.Qd8 Kg7 8.Qd7+
9. +- (8.51): 1.Rxc7 h6 2.Rc8 Nd8 3.Bd4 b5 4.Qxb5 Kg8 5.Rc7 Rxd4 6.exd4
10. +- (6.99): 1.Be5 Qa8+ 2.e4 h5 3.Bxd6 Nxg7 4.fxg7+ Kxg7 5.Be5+ Kf8 6.Bxc7 Qb7 7.Bd6+ Kg7 8.Qc7+ Qxc7 9.Bxc7 fxe4 10.Bxb6 Kf7 11.Bxa5
11. +- (6.57): 1.Qc1 Qd8 2.Rg1 h5 3.f7+ Kh7 4.Qc3 h4 5.e4 Rd1 6.f8N+ Qxf8 7.Rxd1 fxe4 8.f4 e3 9.Qe5 Ng7 10.Qxc7 e2 11.Qc2+
12. +- (6.54): 1.Qxe6 Rxe6 2.f7 h5 3.Rg8+ Kh7 4.Rxf8
13. +- (5.77): 1.Rg1 Qf7 2.h4 h5 3.Qb5 Nf8 4.Qxf5 Qd5+ 5.Qxd5 Rxd5 6.f7+ Kh7 7.Rg7+ Kh6 8.Rg8 Ne6 9.f8Q+ Nxf8 10.Rxf8 Rd3 11.Be5 Rxb3 12.Rf6+ Kh7 13.Bxc7 Rb1+ 14.Kg2
14. +- (5.09): 1.b4 h6 2.bxa5 Qa8+ 3.e4 fxe4 4.Qc1 e3+ 5.Rg2 Nc5 6.fxe3 Qf3 7.f7+ Kh7 8.Bd4 Qxf7 9.Qb1+ Rg6 10.Bxc5 bxa5
15. +- (4.98): 1.Bc3 Qa8+ 2.e4 h5 3.Qxe6 Rxe6 4.f7 Re7 5.Rg8+ Kh7 6.Rxa8 Rxf7 7.e5 Rd7 8.Rf8 Kg6 9.Rg8+ Kh7 10.Rg1
16. +- (4.88): 1.a4 Qa8+ 2.e4 h6 3.Rg1 Kh7 4.f3 Qe8 5.exf5 Ng5 6.h4 Qh5 7.Qxc7+ Nf7 8.Rg7+
17. +- (4.63): 1.Rg2 Qf7 2.h3 h6 3.Kh2 c6 4.a4 h5 5.Rg7
18. +- (4.02): 1.Rg3 Qf7 2.Kg2 h6 3.Rg7 b5 4.Rxf7 bxc4 5.Rxc7 Kg8 6.Rxc4 Rb6 7.b4 axb4 8.axb4 Kf7 9.h4
19. +- (3.95): 1.Rg4 Qf7 2.Rg1 h6 3.Qb5 Nf8 4.Qxf5 Rd5 5.Qf4 Rg5 6.Rxg5 hxg5 7.Qxg5 Ne6 8.Qf5 Nc5 9.b4
20. +- (3.95): 1.Rg5 Qf7 2.Rg1 h6 3.Qb5 Nf8 4.Qxf5 Rd5 5.Qf4 Rg5 6.Rxg5 hxg5 7.Qxg5 Ne6 8.Qf5 Nc5 9.b4
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Jack Lad
Posts: 8557
Joined: Wed Mar 08, 2006 10:01 pm
Location: UK

Re: Best move?

Post by Jack Lad »

AdminX wrote:My human eyes like Qxe6! Very nice tactical position! :wink: I like it.
I am glad you like it Ted! :)

This position is taken from a possible variation of a very famous game played by a very famous player. I wonder if anyone can identify it? :twisted:
Now cracks a noble heart.—Good night, sweet Princess, And flights of angels sing thee to thy rest!
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Best move?

Post by zullil »

bob wrote:
Jack Lad wrote:[d] 5q1k/2p3Rp/1p1rnP2/p4p2/2Q5/PP2P3/1B3P1P/7K w - - 0 1
My human eye likes Re7. Will try on Crafty later.
Well, your monster (Version 22.9) agrees with you, Herr Prof. Dr. Hyatt:

Code: Select all

White(1): display

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

White(1): go
              time limit 10:00 (+0.00) (10:00)
              depth   time  score   variation (1)
starting thread 1
                8     0.41     +1   Qxe6!!
                8     0.41     +3   Qxe6!!
                8     0.42   6.89   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 a4 bxa4 (s=2)
                8->   0.44   6.89   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 a4 bxa4 (s=2)
                9     0.46   6.89   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 a4 bxa4
                9->   0.48   6.89   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 a4 bxa4 (s=2)
               10     0.52   6.85   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 Kg7 Rxf5 c5
               10->   0.55   6.85   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 Kg7 Rxf5 c5 (s=2)
               11     0.62     +1   Qxe6!!
               11     0.63   6.51   Qxe6 Rxe6 f7 h5 Rg8+ Kh7 Rxf8 Kg6 Rh8
                                    Kxf7 Rh7+ Kf8 Rxc7
               11->   0.98   6.51   Qxe6 Rxe6 f7 h5 Rg8+ Kh7 Rxf8 Kg6 Rh8
                                    Kxf7 Rh7+ Kf8 Rxc7 (s=6)
               12     1.08   6.44   Qxe6 Rxe6 f7 h5 Rg8+ Kh7 Rxf8 Kg6 Rh8
                                    Kxf7 Rh7+ Kf8 Rxc7 Rd6 (s=5)
               12->   1.38   6.44   Qxe6 Rxe6 f7 h5 Rg8+ Kh7 Rxf8 Kg6 Rh8
                                    Kxf7 Rh7+ Kf8 Rxc7 Rd6 (s=4)
               13     1.55   6.23   Qxe6 Rxe6 f7 h5 Rg8+ Kh7 Rxf8 Kg6 Rh8
                                    Kxf7 Rh7+ Ke8 Rxh5 f4 exf4 (s=3)
               13     8.38     +1   h3!!
               13    11.41   7.03   h3 h6 Qh4 Nxg7 fxg7+ Qxg7 Bxg7+ Kxg7
                                    Qe7+ Kg6 Qxc7 Re6 Kg2 Kf6 Qd8+ Kf7
                                    Kf3
               13->  11.42   7.03   h3 h6 Qh4 Nxg7 fxg7+ Qxg7 Bxg7+ Kxg7
                                    Qe7+ Kg6 Qxc7 Re6 Kg2 Kf6 Qd8+ Kf7
                                    Kf3 (s=2)
               14    13.89     +1   h3!!
               14    15.91   7.03   h3 h6 Qh4 Nxg7 fxg7+ Qxg7 Bxg7+ Kxg7
                                    Qe7+ Kg6 Qxc7 Re6 Kg2 h5 Qg3+ Kf6 Qh4+
                                    Kg6 <HT>
               14->  18.87   7.03   h3 h6 Qh4 Nxg7 fxg7+ Qxg7 Bxg7+ Kxg7
                                    Qe7+ Kg6 Qxc7 Re6 Kg2 h5 Qg3+ Kf6 Qh4+
                                    Kg6 <HT> (s=2)
               15    21.90     +1   h3!!
               15    33.08   7.97   h3 h6 Re7 Kg8 Rxe6 b5 f7+ Kh7 Qc3 Rxe6
                                    Qh8+ Qxh8 Bxh8 Rg6 f8=Q Rg8 Qxf5+ Kxh8
                                    Qxb5
               15->  35.10   7.97   h3 h6 Re7 Kg8 Rxe6 b5 f7+ Kh7 Qc3 Rxe6
                                    Qh8+ Qxh8 Bxh8 Rg6 f8=Q Rg8 Qxf5+ Kxh8
                                    Qxb5
               16    41.19   8.03   h3 h6 Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+
                                    Kh7 Qxf5+ Kg8 e4 c5 Qg4+ Kh8 e5 h5
                                    Qc8+ Kh7 e6
               16     1:48     +1   Re7!!
               16     2:25   9.34   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 a4 bxa4 Qa8+ e4 Qd8 Be5 Kf7 Qxh7+
                                    Ke6 Qf5+ Kf7 Qh5+ Ke6
               16->   2:25   9.34   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 a4 bxa4 Qa8+ e4 Qd8 Be5 Kf7 Qxh7+
                                    Ke6 Qf5+ Kf7 Qh5+ Ke6
               17     3:00   9.62   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 Qg4+ Qg6 Qc8+ Kf7 Qxc7+ Kf8
                                    Qe7+ Kg8 Qe6+ Kf8 Bd4 Qb1+ Kg2 Qg6+
                                    Kf3 Qh5+ Ke4 Qxh2 Qxb6
               17->   3:06   9.62   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 Qg4+ Qg6 Qc8+ Kf7 Qxc7+ Kf8
                                    Qe7+ Kg8 Qe6+ Kf8 Bd4 Qb1+ Kg2 Qg6+
                                    Kf3 Qh5+ Ke4 Qxh2 Qxb6
               18     4:06   9.63   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 Qg4+ Qg6 Qc8+ Kf7 Qxc7+ Kf8
                                    Qe7+ Kg8 Qe6+ Kf8 Be5 Qb1+ Kg2 Qe4+
                                    Kg3 Qg6+ Kf4 Qh6+ Ke4
               18->   4:21   9.63   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 Qg4+ Qg6 Qc8+ Kf7 Qxc7+ Kf8
                                    Qe7+ Kg8 Qe6+ Kf8 Be5 Qb1+ Kg2 Qe4+
                                    Kg3 Qg6+ Kf4 Qh6+ Ke4
               19     5:10     +1   Re7!!
               19     7:11  10.08   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 e4 Kf8 e5 Qa8+ Kg1 Qe8 Qxh7
                                    Qe6 Qh8+ Kf7 Qg7+ Ke8 Qxc7 Qg4+ Kf1
                                    Qd1+ Kg2 Qxb3
               19->   7:46  10.08   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 e4 Kf8 e5 Qa8+ Kg1 Qe8 Qxh7
                                    Qe6 Qh8+ Kf7 Qg7+ Ke8 Qxc7 Qg4+ Kf1
                                    Qd1+ Kg2 Qxb3
              time=10:00  mat=1  n=2451651438  fh=85%  nps=4.1M
terminating SMP processes.
White(1): Re7 
              time used:  10:00
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lmader
Posts: 154
Joined: Fri Mar 10, 2006 1:20 am
Location: Sonora, Mexico

Re: Best move?

Post by lmader »

There certainly are a lot of easy good moves in this position.

But Deep Fritz 11 likes the harder to find h4 after 15 minutes on an Intel dual with 2G hash (averaging about 4100 k/Ns). I would be curious to know if Rybka likes this move.

New game
5q1k/2p3Rp/1p1rnP2/p4p2/2Q5/PP2P3/1B3P1P/7K w - - 0 1

Analysis by Deep Fritz 11:

1.Qxe6 Rxe6 2.f7 h5 3.Rg8+ Kh7 4.Rxf8 Kg6 5.Rg8+ Kxf7 6.Rg7+ Ke8
+- (5.36) Depth: 15/30 00:00:00 2754kN
1.Re7 Kg8 2.Rxe6 Rxe6 3.Qxe6+ Qf7 4.Qc8+ Qf8 5.Qxc7 h6 6.Qxb6
+- (7.88) Depth: 15/38 00:00:04 19626kN
1.Re7 Kg8 2.Rxe6 Rxe6 3.Qxe6+ Qf7 4.Qc8+ Qf8 5.Qxc7 h6 6.Qxb6 Qe8
+- (7.91) Depth: 16/31 00:00:05 21210kN
1.Re7 Kg8 2.Rxe6 Rxe6 3.Qxe6+ Qf7 4.Qc8+ Qf8 5.Qxc7 b5 6.Kg2 h6
+- (8.08) Depth: 17/33 00:00:06 25688kN
1.Re7 Kg8 2.Rxe6 Rxe6 3.Qxe6+ Qf7 4.Qc8+ Qf8 5.Qxf5 c5 6.Qd5+ Qf7
+- (8.08) Depth: 18/41 00:00:09 36588kN
1.Re7 Kg8 2.Rxe6 Rxe6 3.Qxe6+ Qf7 4.Qc8+ Qf8 5.Qxf5 c5 6.f3 Qf7
+- (8.33) Depth: 19/43 00:00:13 53294kN
1.Re7 Kg8 2.Rxe6 Rxe6 3.Qxe6+ Qf7 4.Qc8+ Qf8 5.Qxf5 c5 6.f3 Qf7
+- (8.33) Depth: 20/38 00:00:22 88470kN
1.Re7 Kg8 2.Rxe6 Rxe6 3.Qxe6+ Qf7 4.Qc8+ Qf8 5.Qxf5 c5 6.f3 a4
+- (8.50) Depth: 21/49 00:00:37 144mN
1.Re7 Kg8 2.Rxe6 Rxe6 3.Qxe6+ Qf7 4.Qc8+ Qf8 5.Qxf5 Qe8 6.Qd5+ Qf7
+- (9.05) Depth: 22/49 00:01:07 263mN
1.Re7 Kg8 2.Rxe6 Rxe6 3.Qxe6+ Qf7 4.Qc8+ Qf8 5.Qxf5 Qe8 6.Qd5+ Kf8
+- (9.06) Depth: 23/53 00:01:50 434mN
1.Re7 Kg8 2.Rxe6 Rxe6 3.Qxe6+ Qf7 4.Qc8+ Qf8 5.Qxf5 Qe8 6.Qd5+ Kf8 7.Be5 h6 8.Bxc7 Qf7 9.Qd8+ Qe8 10.Bxb6 Qxd8 11.Bxd8 Kf7 12.Kg2 Kg6 13.e4 Kf7 14.e5
+- (9.36) Depth: 24/43 00:03:33 847mN
1.h4 a4 2.Be5 Rd1+ 3.Kh2 Nxg7 4.fxg7+ Qxg7 5.Bxg7+ Kxg7 6.Qxc7+ Kf6 7.Qxb6+ Kf7 8.bxa4 Rd7 9.Kg2 f4 10.exf4 Ke7 11.Qc5+ Kd8 12.a5 Rc7 13.Qf5 Rd7
+- (10.79) Depth: 24/55 00:15:36 3929mN, tb=1
1.h4 a4 2.Be5 Rd1+ 3.Kh2 Nxg7 4.fxg7+ Qxg7 5.Bxg7+ Kxg7 6.Qxc7+ Kf8 7.bxa4 Rd2 8.Kg2 f4 9.Qxf4+ Ke7 10.Qf5 h6 11.Qh7+ Kd6 12.Qxh6+ Kc7 13.Qh7+
+- (11.63) Depth: 25/53 00:23:00 5710mN, tb=1
"The foundation of morality is to have done, once for all, with lying; to give up pretending to believe that for which there is no evidence, and repeating unintelligible propositions about things beyond the possibilities of knowledge." - T. H. Huxley
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bob
Posts: 20943
Joined: Mon Feb 27, 2006 7:30 pm
Location: Birmingham, AL

Re: Best move?

Post by bob »

zullil wrote:
bob wrote:
Jack Lad wrote:[d] 5q1k/2p3Rp/1p1rnP2/p4p2/2Q5/PP2P3/1B3P1P/7K w - - 0 1
My human eye likes Re7. Will try on Crafty later.
Well, your monster (Version 22.9) agrees with you, Herr Prof. Dr. Hyatt:

Code: Select all

White(1): display

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

White(1): go
              time limit 10:00 (+0.00) (10:00)
              depth   time  score   variation (1)
starting thread 1
                8     0.41     +1   Qxe6!!
                8     0.41     +3   Qxe6!!
                8     0.42   6.89   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 a4 bxa4 (s=2)
                8->   0.44   6.89   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 a4 bxa4 (s=2)
                9     0.46   6.89   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 a4 bxa4
                9->   0.48   6.89   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 a4 bxa4 (s=2)
               10     0.52   6.85   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 Kg7 Rxf5 c5
               10->   0.55   6.85   Qxe6 Rxe6 f7 Qxf7 Rg6+ Rf6 Bxf6+ Qxf6
                                    Rxf6 Kg7 Rxf5 c5 (s=2)
               11     0.62     +1   Qxe6!!
               11     0.63   6.51   Qxe6 Rxe6 f7 h5 Rg8+ Kh7 Rxf8 Kg6 Rh8
                                    Kxf7 Rh7+ Kf8 Rxc7
               11->   0.98   6.51   Qxe6 Rxe6 f7 h5 Rg8+ Kh7 Rxf8 Kg6 Rh8
                                    Kxf7 Rh7+ Kf8 Rxc7 (s=6)
               12     1.08   6.44   Qxe6 Rxe6 f7 h5 Rg8+ Kh7 Rxf8 Kg6 Rh8
                                    Kxf7 Rh7+ Kf8 Rxc7 Rd6 (s=5)
               12->   1.38   6.44   Qxe6 Rxe6 f7 h5 Rg8+ Kh7 Rxf8 Kg6 Rh8
                                    Kxf7 Rh7+ Kf8 Rxc7 Rd6 (s=4)
               13     1.55   6.23   Qxe6 Rxe6 f7 h5 Rg8+ Kh7 Rxf8 Kg6 Rh8
                                    Kxf7 Rh7+ Ke8 Rxh5 f4 exf4 (s=3)
               13     8.38     +1   h3!!
               13    11.41   7.03   h3 h6 Qh4 Nxg7 fxg7+ Qxg7 Bxg7+ Kxg7
                                    Qe7+ Kg6 Qxc7 Re6 Kg2 Kf6 Qd8+ Kf7
                                    Kf3
               13->  11.42   7.03   h3 h6 Qh4 Nxg7 fxg7+ Qxg7 Bxg7+ Kxg7
                                    Qe7+ Kg6 Qxc7 Re6 Kg2 Kf6 Qd8+ Kf7
                                    Kf3 (s=2)
               14    13.89     +1   h3!!
               14    15.91   7.03   h3 h6 Qh4 Nxg7 fxg7+ Qxg7 Bxg7+ Kxg7
                                    Qe7+ Kg6 Qxc7 Re6 Kg2 h5 Qg3+ Kf6 Qh4+
                                    Kg6 <HT>
               14->  18.87   7.03   h3 h6 Qh4 Nxg7 fxg7+ Qxg7 Bxg7+ Kxg7
                                    Qe7+ Kg6 Qxc7 Re6 Kg2 h5 Qg3+ Kf6 Qh4+
                                    Kg6 <HT> (s=2)
               15    21.90     +1   h3!!
               15    33.08   7.97   h3 h6 Re7 Kg8 Rxe6 b5 f7+ Kh7 Qc3 Rxe6
                                    Qh8+ Qxh8 Bxh8 Rg6 f8=Q Rg8 Qxf5+ Kxh8
                                    Qxb5
               15->  35.10   7.97   h3 h6 Re7 Kg8 Rxe6 b5 f7+ Kh7 Qc3 Rxe6
                                    Qh8+ Qxh8 Bxh8 Rg6 f8=Q Rg8 Qxf5+ Kxh8
                                    Qxb5
               16    41.19   8.03   h3 h6 Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+
                                    Kh7 Qxf5+ Kg8 e4 c5 Qg4+ Kh8 e5 h5
                                    Qc8+ Kh7 e6
               16     1:48     +1   Re7!!
               16     2:25   9.34   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 a4 bxa4 Qa8+ e4 Qd8 Be5 Kf7 Qxh7+
                                    Ke6 Qf5+ Kf7 Qh5+ Ke6
               16->   2:25   9.34   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 a4 bxa4 Qa8+ e4 Qd8 Be5 Kf7 Qxh7+
                                    Ke6 Qf5+ Kf7 Qh5+ Ke6
               17     3:00   9.62   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 Qg4+ Qg6 Qc8+ Kf7 Qxc7+ Kf8
                                    Qe7+ Kg8 Qe6+ Kf8 Bd4 Qb1+ Kg2 Qg6+
                                    Kf3 Qh5+ Ke4 Qxh2 Qxb6
               17->   3:06   9.62   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 Qg4+ Qg6 Qc8+ Kf7 Qxc7+ Kf8
                                    Qe7+ Kg8 Qe6+ Kf8 Bd4 Qb1+ Kg2 Qg6+
                                    Kf3 Qh5+ Ke4 Qxh2 Qxb6
               18     4:06   9.63   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 Qg4+ Qg6 Qc8+ Kf7 Qxc7+ Kf8
                                    Qe7+ Kg8 Qe6+ Kf8 Be5 Qb1+ Kg2 Qe4+
                                    Kg3 Qg6+ Kf4 Qh6+ Ke4
               18->   4:21   9.63   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 Qg4+ Qg6 Qc8+ Kf7 Qxc7+ Kf8
                                    Qe7+ Kg8 Qe6+ Kf8 Be5 Qb1+ Kg2 Qe4+
                                    Kg3 Qg6+ Kf4 Qh6+ Ke4
               19     5:10     +1   Re7!!
               19     7:11  10.08   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 e4 Kf8 e5 Qa8+ Kg1 Qe8 Qxh7
                                    Qe6 Qh8+ Kf7 Qg7+ Ke8 Qxc7 Qg4+ Kf1
                                    Qd1+ Kg2 Qxb3
               19->   7:46  10.08   Re7 Kg8 Rxe6 Rxe6 Qxe6+ Qf7 Qc8+ Qf8
                                    Qxf5 Qe8 e4 Kf8 e5 Qa8+ Kg1 Qe8 Qxh7
                                    Qe6 Qh8+ Kf7 Qg7+ Ke8 Qxc7 Qg4+ Kf1
                                    Qd1+ Kg2 Qxb3
              time=10:00  mat=1  n=2451651438  fh=85%  nps=4.1M
terminating SMP processes.
White(1): Re7 
              time used:  10:00
My original thinking was wrong, as I didn't spend much time looking. Another short look shows that the R at g7 is safe, if black takes it loses the queen. I did not notice that at first, and moved the rook to make the qxe6 move even better. I let Crafty run on my 8-core box and got this:

Code: Select all

               21->   6:08  10.79   1. Re7 Kg8 2. Rxe6 Rxe6 3. Qxe6+ Qf7
                                    4. Qc8+ Qf8 5. Qxc7 Qa8+ 6. Kg1 Qf8
                                    7. Qxb6 Qe8 8. Qxa5 Qd7 9. Qa4 Qd8
                                    10. b4 h5 11. Qb3+ Kf8 12. b5 Qb6 13.
                                    a4
So it seems that I found the right move for the wrong reason. :)
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Daniel Shawul
Posts: 4186
Joined: Tue Mar 14, 2006 11:34 am
Location: Ethiopia

Re: Best move?

Post by Daniel Shawul »

scorpio on a very slow hardware

FEN: 5q1k/2p3Rp/1p1rnP2/p4p2/2Q5/PP2P3/1B3P1P/7K w - - 0 1

Code: Select all

Scorpio:
   2	00:00	       1.534	153.400	+2.40	Kh1-g2 Qf8-a8 f2-f3 Rd6-d2 Kg2-g1 Rd2xb2 Qc4xe6 Qa8xf3 Rg7xc7
   2	00:00	       1.775	177.500	+2.56	Bb2-e5 Qf8-a8 e3-e4 Rd6-d1 Rg7-g1 Qa8xe4 Qc4xe4 Rd1xg1 Kh1xg1 f5xe4
   2	00:00	       1.959	195.900	+3.01	f2-f3 Rd6-d1 Rg7-g1 Rd1xg1 Kh1xg1
   2	00:00	       2.565	256.500	+3.01	f2-f3 Rd6-d1 Rg7-g1 Rd1xg1 Kh1xg1
   3	00:00	       3.412	341.200	+2.92	f2-f3 Rd6-d1 Rg7-g1 Rd1xg1 Kh1xg1 Qf8-f7
   3	00:00	       8.183	204.575	+2.92	f2-f3 Rd6-d1 Rg7-g1 Rd1xg1 Kh1xg1 Qf8-f7
   4	00:00	      11.086	184.766	+3.00	f2-f3 Qf8-d8 Rg7-g1 Qd8-e8
   4	00:00	      15.645	223.500	+3.43	Qc4xe6
   4	00:00	      16.617	237.385	+5.46	Qc4xe6
   4	00:00	      22.905	229.050	+7.13	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g2
   4	00:00	      24.491	204.091	+7.13	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g2
   5	00:00	      38.991	259.940	+6.65	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g2 c7-c5
   5	00:00	      41.839	246.111	+6.65	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g2 c7-c5
   6	00:00	      73.676	320.330	+6.42	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g1 c7-c5
   6	00:00	     118.967	349.902	+6.42	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g1 c7-c5
   7	00:00	     182.352	396.417	+6.00	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g2 Re6-e7 f2-f3 Re7xf7 Rf8-g8 Kg6-h6
   7	00:00	     284.662	400.932	+6.00	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g2 Re6-e7 f2-f3 Re7xf7 Rf8-g8 Kg6-h6
   8	00:01	     455.801	396.348	+6.00	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Bb2-d4 Re6-e7 f2-f3 Re7xf7 Rf8-g8 Kg6-h6
   8	00:02	     998.471	394.652	+6.00	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Bb2-d4 Re6-e7 f2-f3 Re7xf7 Rf8-g8 Kg6-h6
   9	00:03	   1.329.433	404.082	+5.83	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g2 a5-a4 b3-b4 Re6-e7 f2-f3 Re7xf7 Rf8-g8 Kg6-h6
   9	00:09	   3.672.935	386.624	+5.83	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g2 a5-a4 b3-b4 Re6-e7 f2-f3 Re7xf7 Rf8-g8 Kg6-h6
  10	00:10	   4.335.729	403.699	+5.78	Qc4xe6 Rd6xe6 f6-f7 h7-h5 Rg7-g8 Kh8-h7 Rg8xf8 Kh7-g6 Kh1-g2 Re6-e7 Bb2-c3 c7-c5 Rf8-b8 Kg6xf7 Rb8xb6
  10	00:18	   7.453.143	397.713	+6.33	h2-h3
  10	00:21	   8.540.336	388.197	+7.36	h2-h3 h7-h6 Qc4-h4 Ne6xg7 f6xg7 Qf8xg7 Bb2xg7 Kh8xg7 Qh4-e7 Kg7-g6 Qe7xc7 Rd6-e6 Kh1-g2 a5-a4 Qc7-g3 Kg6-f7
  10	00:23	   9.166.518	390.230	+7.36	h2-h3 h7-h6 Qc4-h4 Ne6xg7 f6xg7 Qf8xg7 Bb2xg7 Kh8xg7 Qh4-e7 Kg7-g6 Qe7xc7 Rd6-e6 Kh1-g2 a5-a4 Qc7-g3 Kg6-f7
  11	00:28	  11.160.412	391.593	+7.58	h2-h3 h7-h6 Qc4-h4 Ne6xg7 f6xg7 Qf8xg7 Bb2xg7 Kh8xg7 Qh4-e7 Kg7-g6 Qe7xc7 Rd6-f6 Qc7-e5 Kg6-g5 h3-h4 Kg5-g6
  11	00:35	  14.003.338	397.257	+7.58	h2-h3 h7-h6 Qc4-h4 Ne6xg7 f6xg7 Qf8xg7 Bb2xg7 Kh8xg7 Qh4-e7 Kg7-g6 Qe7xc7 Rd6-f6 Qc7-e5 Kg6-g5 h3-h4 Kg5-g6
  12	00:45	  17.567.802	388.324	+7.64	h2-h3 h7-h6 Qc4-h4 Ne6xg7 f6xg7 Qf8xg7 Bb2xg7 Kh8xg7 Qh4-e7 Kg7-g6 Qe7xc7 Rd6-f6 Kh1-g2 Rf6-e6 f2-f3 a5-a4 b3-b4 Kg6-f6
  12	01:09	  26.942.218	1.347.110	+8.08	Rg7-e7
  12	01:51	  43.717.282	1.748.691	+9.11	Rg7-e7 Kh8-g8 Re7xe6 Rd6xe6 Qc4xe6 Qf8-f7 Qe6-c8 Qf7-f8 Qc8xf5 c7-c5 Qf5-g4 Kg8-f7 Qg4-h5 Kf7-g8 Qh5-d5 Qf8-f7
  12	01:57	  46.497.294	2.906.080	+9.11	Rg7-e7 Kh8-g8 Re7xe6 Rd6xe6 Qc4xe6 Qf8-f7 Qe6-c8 Qf7-f8 Qc8xf5 c7-c5 Qf5-g4 Kg8-f7 Qg4-h5 Kf7-g8 Qh5-d5 Qf8-f7
  13	02:25	  57.299.422	1.332.544	+9.21	Rg7-e7 Kh8-g8 Re7xe6 Rd6xe6 Qc4xe6 Qf8-f7 Qe6-c8 Qf7-f8 Qc8xf5 a5-a4 Qf5-g4 Kg8-f7 Qg4-c4 Kf7-g6 Qc4xa4 c7-c5 Qa4-g4 Kg6-f7 Qg4-d7 Kf7-g6 Qd7-g7 Qf8xg7 f6xg7
  13	02:39	  63.786.139	1.723.949	+9.21	Rg7-e7 Kh8-g8 Re7xe6 Rd6xe6 Qc4xe6 Qf8-f7 Qe6-c8 Qf7-f8 Qc8xf5 a5-a4 Qf5-g4 Kg8-f7 Qg4-c4 Kf7-g6 Qc4xa4 c7-c5 Qa4-g4 Kg6-f7 Qg4-d7 Kf7-g6 Qd7-g7 Qf8xg7 f6xg7
Is Re7 the only solution.
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lmader
Posts: 154
Joined: Fri Mar 10, 2006 1:20 am
Location: Sonora, Mexico

Re: Best move?

Post by lmader »

Is Re7 the only solution.
Ahem... see post above about h4... ahem...
"The foundation of morality is to have done, once for all, with lying; to give up pretending to believe that for which there is no evidence, and repeating unintelligible propositions about things beyond the possibilities of knowledge." - T. H. Huxley
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