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Subject: Re: Test Position: Kingsafety

Author: Tord Romstad

Date: 14:54:31 12/07/03

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On December 07, 2003 at 17:27:16, Anthony Cozzie wrote:

>Tinker-Zappa 3600+10 ICC game.
>
>[D]5rk1/ppq3p1/2p1pr2/5b2/3P2Pp/bNP5/P3QPBP/R4RK1 b - - 0 28
>
>Here Zappa played Qf4!? and went on to win.
>
>1... Qf4 2. gxf5 Bd6 3. Rfd1 Qxh2 4. Kf1 Rxf5 5. Rd3 Rxf2 6. Qxf2 Rxf2 7. Kxf2
>Bg3 8. Kf3 g5 9. Bf1 Qf2 10. Kg4
> = (1.58)	Depth: 11/23	00:00:38.39	17225kN
>
>It does this on a more or less speculative basis: Black gets Q+3P v RRB, but
>White's King is seriously exposed, and Black's remaining army is very active.
>I'm not sure if the sac is completely correct; what does your thing play?

Cool position, and cool move (though I'm not a good enough chess player to guess
whether the sac is correct).  Gothmog thinks Qf4 is very strong, but needs more
than
1 minute to find it on a Pentium IV 2.4 GHz:

 1        0.41     0.00        233 Bg6
 2        0.05     0.01       1242 Bg6 f4 Rxf4 Qxe6+
 3       -0.19     0.03       3917 Bh7 g5 Rg6
 4       -0.39     0.08      10885 Bh7 g5 Rg6 Qh5
 5       -0.33     0.23      28863 Bh7 g5 Rg6 Qh5 Rf5
 6    >= -0.33     0.23      30180 Bh7 g5 Rg6 Qh5 Rf5
 6    <= -0.33     0.39      58499 Bh7 g5 Rg6 Qh5 Rf5
 6       -0.33     0.39      58499 Bh7 g5 Rg6 Qh5 Rf5
 7    >= -0.33     0.44      65988 Bh7 g5 Rg6 Qh5 Rf5
 7    <= -0.33     0.80     132173 Bh7 g5 Rg6 Qh5 Rf5
 7       -0.33     0.80     132173 Bh7 g5 Rg6 Qh5 Rf5
 8    >= -0.33     0.91     151239 Bh7 g5 Rg6 Qh5 Rf5
 8    >= -0.31     0.91     152971 Bh7 g5 Rg6 Qh5 Rf5
 8    >= -0.25     0.97     163248 Bh7 g5 Rg6 Qh5 Rf5
 8    >= -0.11     1.07     184208 Bh7 g5 Rg6 Qh5 Rf5
 8    <=  0.12     1.68     301009 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 8    <=  0.11     1.69     304752 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 8    <=  0.08     1.75     317731 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 8    >=  0.02     1.86     339853 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 8    >=  0.03     1.87     343063 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 8    <=  0.06     1.89     348330 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 8    <=  0.05     1.91     353985 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 8    <=  0.03     1.92     358557 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 8        0.03     1.92     358557 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 9    >=  0.03     2.65     497943 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 9    <=  0.03     3.71     711417 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
 9        0.03     3.71     711417 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
10    >=  0.03     4.71     909613 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Rf5 f4 Rxf4 Kh1
10    >=  0.05     4.87     946351 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Bb2
10    >=  0.11     5.66    1103583 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Bb2
10    >=  0.25    10.49    2033757 Bh7 g5 Rg6 Qg4 Rf4 Qh5 Bb2
10    <=  0.48    11.95    2312410 Bh7 g5 Rg6 Qg4 Rf4 Qh3 e5 dxe5 Qxe5
10    <=  0.47    12.00    2327579 Bh7 g5 Rg6 Qg4 Rf4 Qh3 e5 dxe5 Qxe5
10    <=  0.44    17.10    3232315 Bh7 Rae1 Qf4 Be4 Bxe4 Qxe4 Qxe4 Rxe4 g5
10    >=  0.38    18.34    3473205 Bh7 Rae1 Bd6 h3 g5 Kh1 b5 Be4 Bf4 f3
10    >=  0.39    18.64    3532244 Bh7 Rae1 Bd6 h3 g5 Kh1 b5 Be4 Bf4 f3
10    <=  0.42    19.12    3633978 Bh7 Rae1 Bd6 h3 g5 Kh1 b5 Be4 Bf4 Nc5
10    <=  0.41    19.27    3673881 Bh7 Rae1 Bd6 h3 g5 Kh1 b5 Be4 Bf4 Nc5
10    >=  0.41    19.39    3702152 Bh7 Rae1 Bd6 h3 g5 Kh1 b5 Be4 Bf4 Nc5
10        0.41    19.39    3702152 Bh7 Rae1 Bd6 h3 g5 Kh1 b5 Be4 Bf4 Nc5
11    <=  0.39    30.89    5952705 Bh7 Rae1 Bd6 h3 g5 Kh1 b5 Be4
11    <=  0.38    32.26    6299561 Bh7 Rae1 Bd6 h3 g5 Qc4 Bh2+ Kh1 Rxf2 Qxe6+
                                   Kh8 Rxf2 Rxf2 Qe8+ Bg8 Qh5+
11    >=  0.36    41.41    8065170 Bh7 Rae1 Bd6 h3 g5 Qc4 Qf7 Re2
11    >=  0.38    42.20    8244064 Bh7 Rae1 Bd6 h3 g5 Qc4 Qf7 Re2
11        0.38    42.21    8244064 Bh7 Rae1 Bd6 h3 g5 Qc4 Qf7 Re2
12    >=  0.38     1:10   13818361 Qf4 gxf5 Bd6 Rfd1 h3 Bf3 Qxh2+ Kf1 Rxf5
                                   Qxe6+ Kh8 Nd2 Rxf3 Nxf3 Qg2+
12    >=  0.39     1:11   13973705 Qf4 gxf5 Bd6 Rfd1 h3 Bf3 Qxh2+ Kf1 Rxf5
                                   Qxe6+ Kh8 Nd2 Rxf3 Nxf3 Qg2+
12    >=  0.45     1:13   14439300 Qf4 gxf5 Bd6 Rfd1 h3 Bf3 Qxh2+ Kf1 Rxf5
                                   Qxe6+ Kh8 Nd2 Rxf3 Nxf3 Qg2+
12    >=  0.59     1:16   15095500 Qf4 gxf5 Bd6 Rfd1 h3 Bf3 Qxh2+ Kf1 Rxf5
                                   Qxe6+ Kh8 Nd2 Rxf3 Nxf3 Qg2+
12    >=  0.84     1:21   16139723 Qf4 gxf5 Bd6 Rfd1 h3 Bf3 Qxh2+ Kf1 Rxf5
                                   Qxe6+ Kh8 Nd2 Rxf3 Nxf3 Qg2+
12    <=  1.22     1:24   16812245 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Ke1 Bxh2
12    <=  1.20     1:24   16842147 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 e5
12    <=  1.17     1:24   16908954 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 e5
12    <=  1.09     1:25   17000763 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 e5 Rd2 exd4 cxd4
12    >=  0.95     1:29   17812862 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 Bf4
12    >=  0.97     1:30   18068958 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 Bg3
12    >=  1.03     1:31   18511171 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 Bg3
12    <=  1.08     1:32   18575390 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 Bg3 Nc5 Rh2+ Kg1
                                   Rf4
12    <=  1.06     1:32   18622774 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 Bg3 Nc5 Rh2+ Kg1
                                   Rf4
12    >=  1.05     1:32   18810254 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 Bg3 Nc5 Rh2+ Kg1
                                   Rf4
12    >=  1.06     1:34   19179682 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 Bg3 Nc5 Rh2+ Kg1
                                   Rf4
12        1.06     1:34   19179682 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Kg1 Bxh2+ Kh1 Bg3 Nc5 Rh2+ Kg1
                                   Rf4
13    <=  1.05     1:48   21996154 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Ke1 Rxh2 Rd2 Rxd2 Nxd2
13    >=  1.05     2:05   25446408 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Ke1 Rxh2 Rd2 Bg3+ Kd1 Rf1+ Kc2
                                   Rxa1 Nxa1 Bf2
13        1.05     2:05   25446408 Qf4 gxf5 Bd6 Rfd1 h3 Be4 Rxf5 Kf1 Qxf2+
                                   Qxf2 Rxf2+ Ke1 Rxh2 Rd2 Bg3+ Kd1 Rf1+ Kc2
                                   Rxa1 Nxa1 Bf2
14    >=  1.05     2:55   35676278 Qf4 gxf5 Bd6 Rfd1 Qxh2+ Kf1 Rxf5 Rd3 Rxf2+
                                   Qxf2 Rxf2+ Kxf2 Bg3+ Kf3 g5
14    >=  1.06     3:10   39058498 Qf4 gxf5 Bd6 Rfd1 Qxh2+ Kf1 Rxf5 Rd3 Rxf2+
                                   Qxf2 Rxf2+ Kxf2 Bg3+ Kf3 g5
14    >=  1.12     3:35   44539200 Qf4 gxf5 Bd6 Rfd1 Qxh2+ Kf1 Rxf5 Rd3 Rxf2+
                                   Qxf2 Rxf2+ Kxf2 Bg3+ Kf3 g5
14    <=  1.25     4:09   51334865 Qf4 gxf5 Bd6 Rfd1 Qxh2+ Kf1 Rxf5 Rd3 Rxf2+
                                   Qxf2 Rxf2+ Kxf2 Bg3+ Kf3 g5
14    <=  1.23     4:15   52712208 Qf4 gxf5 Bd6 Rfd1 Qxh2+ Kf1 Rxf5 Rd3 Rxf2+
                                   Qxf2 Rxf2+ Kxf2 Bg3+ Kf3 g5
14    >=  1.22     5:05   63355647 Qf4 gxf5 Bd6 Rfd1 Qxh2+ Kf1 Rxf5 Rd3 Rxf2+
                                   Qxf2 Rxf2+ Kxf2 Bg3+ Kf3 g5 Nd2 g4+
14    <=  1.22     5:14   65164375 Qf4 gxf5 Bd6 Rfd1 Qxh2+ Kf1 Rxf5 Rd3 Rxf2+
                                   Qxf2 Rxf2+ Kxf2 Bg3+ Kf3 g5 Nd2 g4+
14        1.22     5:14   65164375 Qf4 gxf5 Bd6 Rfd1 Qxh2+ Kf1 Rxf5 Rd3 Rxf2+
                                   Qxf2 Rxf2+ Kxf2 Bg3+ Kf3 g5 Nd2 g4+

Tord



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