Author: Mike Byrne
Date: 04:24:53 09/20/02
Go up one level in this thread
On September 20, 2002 at 07:10:05, Mike Byrne wrote:
>On September 20, 2002 at 05:15:45, Gian-Carlo Pascutto wrote:
>
>>[D]2b1q3/p7/1p1p2kb/nPpN3p/P1P1P2P/6P1/5R1K/5Q2 w - - 0 1
>>
>>Isn't Rf6+ an alternate solution to e5?
>>
>>--
>>GCP
>
>I would say yes.
>
>Crafty v17.16 SE (2 cpus)
>
>White(1):
>White(1): 2b1q3/p7/1p1p2kb/nPpN3p/P1P1P2P/6P1/5R1K/5Q2 w - - 0 1
>White(1): go
> clearing hash tables
> time surplus 0.00 time limit 100:00 (100:00)
> nss depth time score variation (1)
>starting thread 1
> 2 0.00 -1.02 1. Nf6 Qe6 2. Qe2
> 2 0.00 -0.96 1. Rf6+ Kg7 2. Qd3
> 2-> 0.01 -0.96 1. Rf6+ Kg7 2. Qd3
> 3 0.01 -1.13 1. Rf6+ Kg7 2. Qd3 Be6
> 3 0.01 -1.10 1. Nf6 Qe6 2. Qe2 Qh3+
> 3 0.01 -0.96 1. Qd3 Kg7 2. Qc3+ Kg6
> (2) 3-> 0.03 -0.96 1. Qd3 Kg7 2. Qc3+ Kg6
> 4 0.03 -1.00 1. Qd3 Kg7 2. Rf6 Qe5 3. Kg1
> 4 0.05 ++ 1. Rf6+!!
> 4 0.05 -0.04 1. Rf6+ Kg7 2. Rxd6 Bd2 3. Qf6+ Kh7
> (2) 4-> 0.05 -0.04 1. Rf6+ Kg7 2. Rxd6 Bd2 3. Qf6+ Kh7
> 5 0.06 -0.11 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Kg6
> 5-> 0.08 -0.11 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Kg6
> 6 0.11 ++ 1. Rf6+!!
> 6 0.15 0.82 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Bg4 5. Nxg4 hxg4
> 6-> 0.19 0.82 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Bg4 5. Nxg4 hxg4
> 7 0.26 0.85 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Nxc4 5. Nxh5+ Kh7 6. Nf6+ <HT>
> (2) 7-> 0.34 0.85 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Nxc4 5. Nxh5+ Kh7 6. Nf6+ <HT>
> 8 0.53 0.60 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Rxh6 Qb2+
> 4. Kh1 Kxh6 5. Qf8+ Qg7 6. Qxc8 Nxc4
> (2) 8-> 0.89 0.60 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Rxh6 Qb2+
> 4. Kh1 Kxh6 5. Qf8+ Qg7 6. Qxc8 Nxc4
> 9 1.48 0.60 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Rxh6 Qb2+
> 4. Kh1 Kxh6 5. Qf8+ Qg7 6. Qxc8 Nxc4
> 9 3.31 ++ 1. e5!!
> 9 6.05 1.46 1. e5 Bg7 2. exd6 Nb7 3. Qd3+ Kh6 4.
> Nf6 Bxf6 5. Rxf6+ Kg7 6. Qf3
> 9-> 6.44 1.46 1. e5 Bg7 2. exd6 Nb7 3. Qd3+ Kh6 4.
> Nf6 Bxf6 5. Rxf6+ Kg7 6. Qf3
> 10 9.80 1.65 1. e5 dxe5 2. Rf6+ Kg7 3. Rd6 Qf7 4.
> Qxf7+ Kxf7 5. Rxh6 Bg4 6. Nf6 Nxc4
> 7. Nxh5
> 10-> 11.00 1.65 1. e5 dxe5 2. Rf6+ Kg7 3. Rd6 Qf7 4.
> Qxf7+ Kxf7 5. Rxh6 Bg4 6. Nf6 Nxc4
> 7. Nxh5
> 11 14.97 1.65 1. e5 dxe5 2. Rf6+ Kg7 3. Rd6 Qf7 4.
> Qxf7+ Kxf7 5. Rxh6 Bg4 6. Nf6 Nxc4
> 7. Nxh5
> 11-> 19.11 1.65 1. e5 dxe5 2. Rf6+ Kg7 3. Rd6 Qf7 4.
> Qxf7+ Kxf7 5. Rxh6 Bg4 6. Nf6 Nxc4
> 7. Nxh5
> 12 41.47 1.56 1. e5 dxe5 2. Rf6+ Kg7 3. Rd6 Qf7 4.
> Qxf7+ Kxf7 5. Rxh6 Bg4 6. Rh7+ Ke6
> 7. Ne3 Be2 <HT>
> 12-> 58.95 1.56 1. e5 dxe5 2. Rf6+ Kg7 3. Rd6 Qf7 4.
> Qxf7+ Kxf7 5. Rxh6 Bg4 6. Rh7+ Ke6
> 7. Ne3 Be2 <HT>
>
>White(1): ?
> time=1:48 cpu=240% mat=0 n=112081K fh=91% nps=1036K
> ext-> checks=8095450 recaps=499318 pawns=336097 sing=85
> ext-> 1rep=449044 thrt:14062 pawn sac=682
> predicted=0 nodes=112081909 evals=0
> endgame tablebase-> probes done=0 successful=0
> SMP-> split=706 stop=112 data=9/64 cpu=4:19 elap=1:48
>
>White(1): e5
> time used: 1:48
>Black(1): undo
>NOTICE: 60 moves to next time control
>White(1): search Rf6
>White(1): go
> time surplus 0.00 time limit 100:00 (100:00)
> nss depth time score variation (1)
> 4 0.00 ++ 1. Rf6+!!
> 4 0.00 0.00 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6
> 4-> 0.00 0.00 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6
> 5 0.02 -0.11 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Kg6
> 5-> 0.02 -0.11 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Kg6
> 6 0.02 ++ 1. Rf6+!!
> 6 0.05 0.82 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Bg4 5. Nxg4 hxg4
> 6-> 0.05 0.82 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Bg4 5. Nxg4 hxg4
> 7 0.13 0.85 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Nxc4 5. Nxh5+ Kh7 6. Nf6+ Kg6
> <HT>
> 7-> 0.13 0.85 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Qf6+ Qxf6
> 4. Nxf6 Nxc4 5. Nxh5+ Kh7 6. Nf6+ Kg6
> <HT>
> 8 0.31 0.54 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Rxh6 Kxh6
> 4. Qf8+ Kh7 5. Qxc8 Nxc4
> 8-> 0.31 0.54 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Rxh6 Kxh6
> 4. Qf8+ Kh7 5. Qxc8 Nxc4
> 9 0.74 0.85 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Rxh6 Kxh6
> 4. Qf8+ Kh7 5. Qxc8 Nxc4 6. Qd7+ Qg7
> 9-> 0.74 0.85 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Rxh6 Kxh6
> 4. Qf8+ Kh7 5. Qxc8 Nxc4 6. Qd7+ Qg7
> 10 1.78 0.90 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Rxh6 Kxh6
> 4. Qf8+ Qg7 5. Qxc8 Nxc4 6. Qe6+ Qg6
> 7. Qe7 Qg7
> 10-> 1.78 0.90 1. Rf6+ Kg7 2. Rxd6 Qe5 3. Rxh6 Kxh6
> 4. Qf8+ Qg7 5. Qxc8 Nxc4 6. Qe6+ Qg6
> 7. Qe7 Qg7
> 11 7.52 0.91 1. Rf6+ Kg7 2. e5 Nxc4 3. Qxc4 dxe5
> 4. Rc6 Qf7 5. Rc7 Bd7 6. Nxb6 axb6
> 7. Qxf7+ Kxf7 8. Rxd7+
> 11-> 7.53 0.91 1. Rf6+ Kg7 2. e5 Nxc4 3. Qxc4 dxe5
> 4. Rc6 Qf7 5. Rc7 Bd7 6. Nxb6 axb6
> 7. Qxf7+ Kxf7 8. Rxd7+
> 12 16.63 ++ 1. Rf6+!!
> 12 28.30 1.45 1. Rf6+ Kg7 2. e5 Qxe5 3. Rf7+ Kh8
> 4. Ne7 Qb2+ 5. Rf2 Qg7 6. Nxc8 Qc7
> 7. Rf6 Bg7 8. Nxd6 Bxf6 9. Qxf6+
> 12-> 28.30 1.45 1. Rf6+ Kg7 2. e5 Qxe5 3. Rf7+ Kh8
> 4. Ne7 Qb2+ 5. Rf2 Qg7 6. Nxc8 Qc7
> 7. Rf6 Bg7 8. Nxd6 Bxf6 9. Qxf6+
> 13 51.56 1.45 1. Rf6+ Kg7 2. e5 Qxe5 3. Rf7+ Kh8
> 4. Ne7 Qb2+ 5. Rf2 Qg7 6. Nxc8 Qc7
> <HT>
> 13-> 51.56 1.45 1. Rf6+ Kg7 2. e5 Qxe5 3. Rf7+ Kh8
> 4. Ne7 Qb2+ 5. Rf2 Qg7 6. Nxc8 Qc7
> <HT>
in fact, after two minutes PV, the line tranposes to the orginal e5 line for
several moves
14 2:05 1.67 1. Rf6+ Kg7 2. e5 dxe5 3. Rd6 Qf7 4.
Qxf7+ Kxf7 5. Rxh6 Bg4 6. Rh7+ Ke6
7. Ne3 Be2 8. Kh3 Kd6 9. Nf5+ Ke6
14-> 2:05 1.67 1. Rf6+ Kg7 2. e5 dxe5 3. Rd6 Qf7 4.
Qxf7+ Kxf7 5. Rxh6 Bg4 6. Rh7+ Ke6
7. Ne3 Be2 8. Kh3 Kd6 9. Nf5+ Ke6
compared to:
12-> 58.95 1.56 1. e5 dxe5 2. Rf6+ Kg7 3. Rd6 Qf7 4.
Qxf7+ Kxf7 5. Rxh6 Bg4 6. Rh7+ Ke6
7. Ne3 Be2 <HT>
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