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Subject: Re: easy position - but still a nice move

Author: Mike Byrne

Date: 20:55:49 05/04/04

Go up one level in this thread


On May 04, 2004 at 23:42:19, Frank E. Oldham wrote:

>On May 03, 2004 at 20:33:23, Mike Byrne wrote:
>
>>[d]4n1k1/1pbq1r1p/p1r1b1p1/P1BN1p2/1PP1Q3/4R3/2B3PP/4R1K1 w - - 0 46
>>
>>Crafty 19.12 SE vs Ruffian 2.0.2  Game/40 minutes
>>
>>Work the move out the before putting it in your computer!
>
>Hmm, is it really so easy?
>crafty19.10f starts with Qxe6 and it looks all over, but in ply 15 changes to
>Qd4.
>I let it run and it stayed with Qd4 through ply 19.
>What's the real answer?
>
>Black(1): 4n1k1/1pbq1r1p/p1r1b1p1/P1BN1p2/1PP1Q3/4R3/2B3PP/4R1K1 w
>White(1): go
>              time surplus   0.00  time limit 1666:39 (1666:39)
>              depth   time  score   variation (1)
>                6->   0.07   1.95   1. Qf3 f4 2. R3e2 Bd6 3. Bxd6 Rxd6
>                                    4. Nxf4 (s=2)
>                7     0.18   2.34   1. Qf3 f4 2. Re4 Ng7 3. Nxc7 Rxc7 4.
>                                    Qf2 Bf5
>                7     0.22     ++   1. Qxe6!!
>                7     0.25   3.66   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Bxh2+
>                                    4. Kxh2 Qc6 5. Rxf7 Kxf7
>                7->   0.25   3.66   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Bxh2+
>                                    4. Kxh2 Qc6 5. Rxf7 Kxf7 (s=4)
>                8     0.29   3.85   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Bxh2+
>                                    4. Kxh2 Qc6 5. Kg1 (s=3)
>                8->   0.35   3.85   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Bxh2+
>                                    4. Kxh2 Qc6 5. Kg1 (s=2)
>                9     0.42   3.82   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Bxh2+
>                                    4. Kxh2 Qd8 5. Kg1 h6
>                9->   0.49   3.82   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Bxh2+
>                                    4. Kxh2 Qd8 5. Kg1 h6 (s=2)
>               10     0.62   3.90   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Bxh2+
>                                    4. Kxh2 Qd8 5. Kg1 h6 6. R1e5 Rxe7
>                                    7. Rxe7
>               10->   1.07   3.90   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Bxh2+
>                                    4. Kxh2 Qd8 5. Kg1 h6 6. R1e5 Rxe7
>                                    7. Rxe7 (s=3)
>               11     1.32   3.97   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Bxh2+
>                                    4. Kxh2 Qd8 5. Kg1 Qc8 6. Rxf7 Kxf7
>                                    7. Re7+ Kf8 (s=2)
>               11->   2.26   3.97   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Bxh2+
>                                    4. Kxh2 Qd8 5. Kg1 Qc8 6. Rxf7 Kxf7
>                                    7. Re7+ Kf8 (s=4)
>               12     2.85   4.01   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Qd8
>                                    4. Nxc7 Rxe7 5. Rxe7 Qd2 6. Ba4 Qc1+
>                                    7. Kf2 Qxc4 (s=3)
>               12->   6.67   4.01   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Qd8
>                                    4. Nxc7 Rxe7 5. Rxe7 Qd2 6. Ba4 Qc1+
>                                    7. Kf2 Qxc4 (s=5)
>               13     7.89   4.01   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Qd8
>                                    4. Nxc7 Rxe7 5. Rxe7 Qd2 6. Ba4 Qc1+
>                                    7. Kf2 Qf4+ 8. Ke2 Qg4+ 9. Kf2 Qxc4
>                                    (s=4)
>               13->  18.15   4.01   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Qd8
>                                    4. Nxc7 Rxe7 5. Rxe7 Qd2 6. Ba4 Qc1+
>                                    7. Kf2 Qf4+ 8. Ke2 Qg4+ 9. Kf2 Qxc4
>                                    (s=5)
>               14    21.28   3.93   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Qd8
>                                    4. Nxc7 Rxe7 5. Rxe7 Qd2 6. Ba4 Qc1+
>                                    7. Kf2 Qf4+ 8. Ke2 Qxc4+ 9. Ke3 Nh5
>                                    (s=4)
>               14->  51.09   3.93   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Qd8
>                                    4. Nxc7 Rxe7 5. Rxe7 Qd2 6. Ba4 Qc1+
>                                    7. Kf2 Qf4+ 8. Ke2 Qxc4+ 9. Ke3 Nh5
>                                    (s=5)
>               15    58.16   3.59   1. Qxe6 Rxe6 2. Rxe6 Ng7 3. Re7 Qd8
>                                    4. Nxc7 Rxe7 5. Rxe7 Qd2 6. Ba4 Qc1+
>                                    7. Kf2 Qf4+ 8. Ke2 Qxc4+ 9. Ke3 Qc1+
>                                    10. Kf2 Qf4+ 11. Kg1 (s=4)
>               15     6:56   3.72   1. Qd4 Ng7 2. Ba4 Bd8 3. Bxc6 bxc6
>                                    4. Nb6 Qxd4 5. Bxd4 Bf6 6. Bxf6 Rxf6
>                                    7. Rd3 Nh5 8. Rd8+ Kg7 <HT> (s=2)
>               15->   7:39   3.72   1. Qd4 Ng7 2. Ba4 Bd8 3. Bxc6 bxc6
>                                    4. Nb6 Qxd4 5. Bxd4 Bf6 6. Bxf6 Rxf6
>                                    7. Rd3 Nh5 8. Rd8+ Kg7 <HT>
>               16    11:29   3.70   1. Qd4 Ng7 2. Ba4 Bd8 3. Qf4 Bc7 4.
>                                    Qh6 Bd8 5. Rd3 Qc8 6. Bxc6 bxc6 7.
>                                    Nb6 Bxb6 8. Bxb6 Rd7 9. Rd4
>               16->  16:36   3.70   1. Qd4 Ng7 2. Ba4 Bd8 3. Qf4 Bc7 4.
>                                    Qh6 Bd8 5. Rd3 Qc8 6. Bxc6 bxc6 7.
>                                    Nb6 Bxb6 8. Bxb6 Rd7 9. Rd4 (s=3)
>               17    24:47   3.70   1. Qd4 Ng7 2. Ba4 Bd8 3. Qf4 Bc7 4.
>                                    Qh6 Bd6 5. Bxd6 Qxd6 6. Rh3 Ne8 7.
>                                    Bxc6 bxc6 8. Nf4 Nc7 9. Nxe6 Nxe6 10.
>                                    Rg3 (s=2)
>               17->  39:07   3.70   1. Qd4 Ng7 2. Ba4 Bd8 3. Qf4 Bc7 4.
>                                    Qh6 Bd6 5. Bxd6 Qxd6 6. Rh3 Ne8 7.
>                                    Bxc6 bxc6 8. Nf4 Nc7 9. Nxe6 Nxe6 10.
>                                    Rg3 (s=2)
>               18    62:44   3.78   1. Qd4 Ng7 2. Ba4 Bd8 3. Qf4 g5 4.
>                                    Qf2 f4 5. Rd3 Qc8 6. Bxc6 Qxc6 7. Rd2
>                                    f3 8. gxf3 g4 9. f4 Bf5
>               18-> 101:30   3.78   1. Qd4 Ng7 2. Ba4 Bd8 3. Qf4 g5 4.
>                                    Qf2 f4 5. Rd3 Qc8 6. Bxc6 Qxc6 7. Rd2
>                                    f3 8. gxf3 g4 9. f4 Bf5 (s=3)
>               19   310:58   3.86   1. Qd4 f4 2. Re4 f3 3. gxf3 Ng7 4.
>                                    Ba4 Bd8 5. Re5 h6 6. Qe3 Bg5 7. Qe2
>                                    Bh4 8. Bf2 Bxf2+ 9. Qxf2 Qd6 10. Bxc6
>                                    bxc6 11. c5 (s=2)
>               19-> 427:59   3.86   1. Qd4 f4 2. Re4 f3 3. gxf3 Ng7 4.
>                                    Ba4 Bd8 5. Re5 h6 6. Qe3 Bg5 7. Qe2
>                                    Bh4 8. Bf2 Bxf2+ 9. Qxf2 Qd6 10. Bxc6
>                                    bxc6 11. c5 (s=2)
>?              20   428:30   1/48*  1. Qd4
>White(1): ?
>              time=428:44  cpu=392%  mat=0  n=65167049909  fh=1840%  nps=2.53M
>              ext-> chk=235011580 cap=148918277 pp=80341985 1rep=297875859
>mate=20229935
>              predicted=0  nodes=65167049909  evals=933993467
>              endgame tablebase-> probes=0  hits=0
>              SMP->  split=8083  stop=1341  data=11/32  cpu=1680:53  elap=428:44
>
>Frank


I was thinking Qxe6 ..but Qd4 looks good too ...not  agood position



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