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Subject: Re: Slate's Challenge of the Day

Author: Slater Wold

Date: 21:02:20 10/07/03

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On October 07, 2003 at 23:03:00, Dann Corbit wrote:

>On October 07, 2003 at 22:34:09, Dann Corbit wrote:
>
>>On October 07, 2003 at 21:37:50, Telmo Escobar wrote:
>>
>>>On October 07, 2003 at 18:48:30, Slater Wold wrote:
>>>
>>>>[D]r2br1k1/1b1n2p1/p2pp1Pp/qp6/3BPP2/P1N5/1PPQ4/1K1R1B1R w - -
>>>>
>>>>This game can be over in ~10 moves.
>>>>
>>>>Can you find Bxg7?
>>>
>>> I'd firstly examine 1.Bxg7 Kxg7 2.Rxh6 Kxh6 3.Qh2+ Kxg6 4.Bxb5- but I'm fond of
>>>"brilliant" blunders.
>>
>>Blacks 4 .. Bg5 reply still loses.  Or are you thinking of something else?
>
>1.Bxg7 Kxg7 2.Rxh6 Kxh6 3.Qh2+ Kxg6 4.Bxb5 Bg5 5. Bxd7 Rh8 6. Qg2
>
>leads to this:
>
>time surplus   0.00  time limit 16:39 (16:39)
>depth   time  score   variation (1)
>  6     0.40   1.21   1. ... Raf8 2. Bxe6 Kf6 3. e5+ dxe5
>                      4. fxg5+ Kxe6 5. Qxb7
>  6     0.62   0.96   1. ... Qc5 2. Bxe6 Kf6 3. Bd5 Bxf4
>                      4. Bxb7
>  6     0.88   0.68   1. ... Rad8 2. Bxe6 Kf6 3. Bd5 Bxf4
>                      4. Bxb7 Rb8
>  6->   1.27   0.68   1. ... Rad8 2. Bxe6 Kf6 3. Bd5 Bxf4
>                      4. Bxb7 Rb8
>  7     1.34     --   1. ... Rad8
>  7     1.73   1.46   1. ... Rad8 2. Bxe6 Kf6 3. Bd5 Bxf4
>                      4. Rf1 Rb8 5. Rxf4+ Ke7
>  7     2.20   1.12   1. ... Qc5 2. Bxe6 Kf6 3. Bd5 Bxf4
>                      4. e5+ Kf5 5. Bxb7
>  7     3.10   0.60   1. ... Kf7 2. Qg4 Be7 3. Qxe6+ Kf8
>                      4. Rxd6 Rh1+ 5. Nd1 Bxd6 6. Qxd6+
>  7->   3.28   0.60   1. ... Kf7 2. Qg4 Be7 3. Qxe6+ Kf8
>                      4. Rxd6 Rh1+ 5. Nd1 Bxd6 6. Qxd6+
>  8     3.52     --   1. ... Kf7
>  8     4.73   1.70   1. ... Kf7 2. Qg4 Rh4 3. Qxe6+ Kg7
>                      4. fxg5 Qe5 5. Rxd6 Qxe6 6. Rxe6
>  8     6.12   1.02   1. ... Qc5 2. Rg1 Kf7 3. Qg4 Qc4 4.
>                      fxg5 Ke7 5. Ba4
>  8->   7.59   1.02   1. ... Qc5 2. Rg1 Kf7 3. Qg4 Qc4 4.
>                      fxg5 Ke7 5. Ba4
>  9     8.25     --   1. ... Qc5
>  9    10.68   2.04   1. ... Qc5 2. Bxe6 Rh5 3. Rf1 Kg7 4.
>                      fxg5 Rxg5 5. Rf7+ Kg6 6. Qf3
>  9    12.03   1.85   1. ... Kf7 2. Qg4 Rh4 3. Qxe6+ Kg7
>                      4. Rg1 Rxf4 5. Nd5 Bxd5 6. Rxg5+ Kh7
>                      7. exd5
>  9    15.15   1.39   1. ... Raf8 2. Bxe6 Rxf4 3. Bf5+ Kf7
>                      4. Qxg5 Qe5 5. Nd5 Bxd5 6. Qg6+ Ke7
>                      7. Rxd5
>  9->  15.91   1.39   1. ... Raf8 2. Bxe6 Rxf4 3. Bf5+ Kf7
>                      4. Qxg5 Qe5 5. Nd5 Bxd5 6. Qg6+ Ke7
>                      7. Rxd5
> 10    16.36   1.47   1. ... Raf8 2. Bxe6 Rxf4 3. Bf5+ Kf7
>                      4. Qxg5 Qe5 5. Qg6+ Ke7 6. Nd5+ Bxd5
>                      7. Rxd5 Rf1+ 8. Ka2 Qf4
> 10->  19.69   1.47   1. ... Raf8 2. Bxe6 Rxf4 3. Bf5+ Kf7
>                      4. Qxg5 Qe5 5. Qg6+ Ke7 6. Nd5+ Bxd5
>                      7. Rxd5 Rf1+ 8. Ka2 Qf4
> 11    20.34   1.53   1. ... Raf8 2. Bxe6 Rxf4 3. Bf5+ Kf7
>                      4. Qxg5 Qe5 5. Nd5 Bxd5 6. Rxd5 Rf1+
>                      7. Ka2 Qf4 8. Qg2
> 11    23.19   1.32   1. ... Kf7 2. Qg4 Rh4 3. Qxe6+ Kg7
>                      4. fxg5 Qe5 5. Qc4 Bxe4 6. Qe2 Kg6
>                      7. Re1
> 11->  24.24   1.32   1. ... Kf7 2. Qg4 Rh4 3. Qxe6+ Kg7
>                      4. fxg5 Qe5 5. Qc4 Bxe4 6. Qe2 Kg6
>                      7. Re1
> 12    26.43     --   1. ... Kf7
> 12     1:50   2.38   1. ... Kf7 2. Qg4 Kg7 3. fxg5 Bc8 4.
>                      Rxd6 Rd8 5. Qxe6 Qxg5 6. Rd5 Qg1+ 7.
>                      Rd1 Qc5
> 12     1:59   1.60   1. ... Raf8 2. Bxe6 Rxf4 3. Bf5+ Kf7
>                      4. Qxg5 Qe5 5. Qg6+ Ke7 6. Qg1 Kf7
>                      7. Qb6 Bc8 8. Bxc8 Rxc8 9. Rxd6
> 12->   2:07   1.60   1. ... Raf8 2. Bxe6 Rxf4 3. Bf5+ Kf7
>                      4. Qxg5 Qe5 5. Qg6+ Ke7 6. Qg1 Kf7
>                      7. Qb6 Bc8 8. Bxc8 Rxc8 9. Rxd6
> 13     2:10   1.99   1. ... Raf8 2. Bxe6 Rxf4 3. Bf5+ Kf7
>                      4. Qxg5 Qe5 5. Qg6+ Ke7 6. Nd5+ Bxd5
>                      <HT>
> 13     2:39   1.96   1. ... Qd8 2. Rxd6 Kg7 3. fxg5 Qe7
>                      4. Qd2 Rad8 5. e5 Rhf8 6. Ka2 Kg6 7.
>                      Ne2 Qxg5 8. Rxe6+
> 13->   2:45   1.96   1. ... Qd8 2. Rxd6 Kg7 3. fxg5 Qe7
>                      4. Qd2 Rad8 5. e5 Rhf8 6. Ka2 Kg6 7.
>                      Ne2 Qxg5 8. Rxe6+
> 14     3:37     --   1. ... Qd8
> 14     5:04   2.62   1. ... Qd8 2. Bxe6 Kg7 3. fxg5 Qe7
>                      4. Qg4 Rab8 5. Rf1 Bc8 6. Bf5 Qb7 7.
>                      b3 Bxf5 8. exf5 Rh2
> 14     8:06   2.05   1. ... Rh5 2. Bxe6 Kg7 3. Rxd6 Rd8
>                      4. Rxd8 Qxd8 5. fxg5 Rxg5 6. Qh3 Bc6
>                      7. Qf1 Qf6 8. Qh3 Kf8
> 14     8:31   1.64   1. ... Raf8 2. Bxe6 Rxf4 3. Bf5+ Kf7
>                      4. Qxg5 Qe5 5. Qg6+ Ke7 6. Qg1 Kf7
>                      7. Qb6 Qe7 8. Rxd6 Rh1+ 9. Ka2 Kg8
> 14->   9:19   1.64   1. ... Raf8 2. Bxe6 Rxf4 3. Bf5+ Kf7
>                      4. Qxg5 Qe5 5. Qg6+ Ke7 6. Qg1 Kf7
>                      7. Qb6 Qe7 8. Rxd6 Rh1+ 9. Ka2 Kg8
> 15     9:19   1/44*  1. ... Raf8
>
>So I am not so sure of the win any more (1.6 pawns is not terribly decisive).
>
>I will analyze this one overnight.

Also, I never really *gave* a winning line.  The whole 1.Bxg7 Kxg7 2.Rxh6 Kxh6
3.Qh2+ Kxg6 4.Bxb5 line just kinda came about.

You should look at 1. Bxg7 Kxg7 2. Bxb5.  Which IMO, is the better line.



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