Author: Robert Hyatt
Date: 19:44:31 01/16/04
Go up one level in this thread
On January 16, 2004 at 19:49:05, ALI MIRAFZALI wrote:
>In this position which happened in a game between Hiarcs 8 running at 1800 MHZ
>and the novag Handheld chess computer Sapphire(at 20 Mhz) ;Hiarcs 8 played
>27...Qxh2?
>Not noticing that after 28.Bxf7+! it is a Draw by perpetual check.Alas the
>Sapphire could not find the move in the actual game.
>[D]r5k1/5p1p/p5p1/1p3bR1/5P1q/1B6/PPP4P/1K1Q4 b
>Questions:
>1.Does your program play or consider 27..Qxh2?
>2.How long does it for your program to see the draw score after 27..Qxh2?
>Here is the complete game score:
>[Event "?"]
>[Site "?"]
>[Date "2003.12.13"]
>[Round ""]
>[White "Sapphire, Novag"]
>[Black "8, Hiarcs"]
>[Result "0-1"]
>
>1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6
>6.Bg5 e6 7.Qd2 Be7 8.O-O-O O-O 9.Nb3 d5 10.Bxf6 Bxf6
>11.exd5 Bxc3 12.Qxc3 exd5 13.Bb5 Qg5+ 14.Kb1 d4 15.Qc5 Qxg2
>16.Nxd4 Nxd4 17.Qxd4 Qg4 18.f4 Qh4 19.Rhg1 g6 20.Rd2 Bf5
>21.Rg5 Rfd8 22.Qe3 a6 23.Ba4 b5 24.Bb3 Re8 25.Qd4 Re1+
>26.Rd1 Rxd1+ 27.Qxd1 Qxh2 28.Qd4 Re8 29.Rg1 a5 30.Qa7 Re7
>31.Qb8+ Kg7 32.Qb6 a4 33.Qd4+ Kh6 34.Bd5 Rd7 35.Qc5 Bxc2+
>36.Kc1 Qxf4+ 37.Kxc2 Qf5+ 38.Kc3 Qxd5 39.Qxd5 Rxd5 40.Re1 g5
>41.Re4 Kg6 42.b3 axb3 43.Kxb3 h5 44.Kb4 h4 45.a4 h3
>46.axb5 h2 47.Re1 g4 48.b6 g3 0-1
Running on my 750mhz laptop, crafty only considers Qxf4 and not Qxh2. I
forced Qxh2 and told it to move for white. It found Bxf7+ in 7 seconds and
had a draw score at about 1 minute. This would translate to maybe 5-10 seconds
on my dual xeon...
9 2.29 -1.85 2. Qd4 Qh1+ 3. Rg1 Qc6 4. Re1 Rc8 5.
Qf2 Rc7 6. Qe2 h6 <HT>
9 2.62 -1.79 2. Rg1 Rc8 3. Rf1 a5 4. Qc1 a4 5. Rh1
Qf2 6. Rf1
9 3.06 ++ 2. Bxf7+!!
9 3.61 0.01 2. Bxf7+ Kxf7 3. Rxf5+ gxf5 4. Qd7+
Kf6 5. Qd6+ Kg7 6. Qe7+ Kg8 7. Qe6+
Kg7 8. Qe7+
9-> 3.61 0.01 2. Bxf7+ Kxf7 3. Rxf5+ gxf5 4. Qd7+
Kf6 5. Qd6+ Kg7 6. Qe7+ Kg8 7. Qe6+
Kg7 8. Qe7+ (s=3)
10 4.93 0.01 2. Bxf7+ Kxf7 3. Rxf5+ gxf5 4. Qd7+
Kf6 5. Qd6+ Kg7 6. Qe7+ Kg8 7. Qe6+
Kg7 8. Qe7+ (s=2)
10-> 5.15 0.01 2. Bxf7+ Kxf7 3. Rxf5+ gxf5 4. Qd7+
Kf6 5. Qd6+ Kg7 6. Qe7+ Kg8 7. Qe6+
Kg7 8. Qe7+
Make that 3 seconds on my dual xeon. :)
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