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Subject: Re: Position Corrected

Author: Jeremiah Penery

Date: 15:58:19 03/11/00

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On March 11, 2000 at 15:22:08, James Robertson wrote:

>On March 11, 2000 at 15:15:51, James Robertson wrote:
>
>>In a recent Winboard tournament Insomniac reached this position against Zarkov:
>>
>>[D]2rqkn1r/p3bppp/2p1b3/1p4N1/3PN3/8/PP2QPPP/R1B2RK1 w k -
>>
>>Insomniac played 1. Re1 sacrificing the d4 pawn. It won after
>>1. ... Qxd4 2. Be3 Qe5 3. f4 Qb8 4. f5 Bxg5 etc.
>
>This should read 1. ... Qxd4 2. Be3 Qe5 3. Rad1 Rd8 4. Rxd8 Bxd8 5. f4 Qb8 6. f5
>Bxg5
>
>>
>>Is Re1 really the best move? Is there a better defense for black? What do other
>>programs think?
>>
>>Analysis appreciated.
>>
>>James

I get strange results on my modified Crafty:

 6->   2.02   1.10   1. Re1 Qxd4 2. Nf3 Qc4 3. Qe3 Ng6
 7     5.27   1.04   1. Re1 Bc4 2. Qd1 f6 3. Qh5+ Kd7 4.
                     Qg4+ Kc7 5. Qf4+ Kb7
 7->   8.50   1.04   1. Re1 Bc4 2. Qd1 f6 3. Qh5+ Kd7 4.
                     Qg4+ Kc7 5. Qf4+ Kb7
 8    13.67   1.06   1. Re1 Bc4 2. Qg4 Be6 3. Qd1 Ng6 4.
                     Nxe6 fxe6 5. f3
 8->  20.07   1.06   1. Re1 Bc4 2. Qg4 Be6 3. Qd1 Ng6 4.
                     Nxe6 fxe6 5. f3
 9     1:03   0.87   1. Re1 h6 2. Nf3 Ng6 3. a4 Bc4 4. Qe3
                     O-O 5. axb5
 9     1:47   0.91   1. Rd1 Bd5 2. f4 Ne6 3. Nxe6 Bxe6 4.
                     d5 cxd5 5. Qxb5+ Kf8 6. Qe2
 9->   4:18   0.91   1. Rd1 Bd5 2. f4 Ne6 3. Nxe6 Bxe6 4.
                     d5 cxd5 5. Qxb5+ Kf8 6. Qe2
10     4:58   0.92   1. Rd1 Bc4 2. Qh5 g6 3. Re1 Qxd4 4.
                     Qh6 Qe5 5. Nf3 Qe6 6. Nc5
10->   7:47   0.92   1. Rd1 Bc4 2. Qh5 g6 3. Re1 Qxd4 4.
                     Qh6 Qe5 5. Nf3 Qe6 6. Nc5
11    12:58   0.91   1. Rd1 Bd5 2. Bf4 Bxe4 3. Qxe4 Qd5
                     4. Qxd5 cxd5 5. Re1 Ng6 6. Bd6 Kf8
                     7. Bxe7+ Nxe7 8. Kf1
11    31:02   0.94   1. a4 Bc4 2. Qh5 h6 3. Re1 Ng6 4. Nf3
                     O-O 5. axb5 Qd5 6. Qg4
11->  32:48   0.94   1. a4 Bc4 2. Qh5 h6 3. Re1 Ng6 4. Nf3
                     O-O 5. axb5 Qd5 6. Qg4
12    43:18   0.92   1. a4 Bc4 2. Qh5 h6 3. Re1 Ng6 4. Nf3
                     O-O 5. axb5 Qd5 6. Qg4 Bb4

When searching Re1 by itself, this is what I get:

13->  16:21   0.54   1. Re1 h6 2. Qh5 Qxd4 3. Bd2 b4 4.
                     Rad1 g6 5. Nxe6 Nxe6 6. Qa5 Qxb2 7.
                     Qxa7 Kf8



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