Author: Dann Corbit
Date: 01:18:57 01/04/02
Go up one level in this thread
On January 04, 2002 at 03:41:34, Steffen Jakob wrote:
>An another one: WAC #252:
>
>[D]1rb1r1k1/p1p2ppp/5n2/2pP4/5P2/2QB4/qNP3PP/2KRB2R b - -
>
>Here the key move is 1... Re2 which is surely the best move if you define "best
>move" as the move which wins and leads to the shortest mate (it's a mate in 5).
>Hossa (version of today) needs 19.73 seconds to play 1... Re2. Before he prefers
>1... Bg4 which also seems to win. So if you only look for winning move then this
>position should be counted as solved in short depths, too. How do others handle
>such cases?
Here's the analysis of the forward position by crafty (it appears to be very
volatile). At any rate, you're up two minor pieces after the move.
PFGA: EPD record: 1
middle-game phase
clearing hash tables
time surplus 0.00 time limit 16:39 (16:39)
nss depth time score variation (1)
5-> 0.22 -2.59 1. d6 Bxd1 2. Nxd1 Rb1+ 3. Kd2 Qd5
4. Bh4 Qxd6 5. Bxf6 gxf6
6 0.36 -- 1. d6
6 0.48 -3.12 1. d6 cxd6 2. h3 Bxd1 3. Nxd1 Rb1+
4. Kd2 Qd5
6-> 1.00 -3.12 1. d6 cxd6 2. h3 Bxd1 3. Nxd1 Rb1+
4. Kd2 Qd5
7 3.20 -- 1. d6
7 4.86 -6.87 1. d6 Re2 2. Bxe2 Ne4 3. Qxg7+ Kxg7
4. Bc3+ Nxc3 5. Bxg4 Qxb2+ 6. Kd2 Nxd1
7. Rxd1 cxd6
7 10.75 -4.86 1. Bh4 Nxd5 2. Bc4 Nxc3 3. Bxa2 Nxa2+
4. Kb1 Nc3+ 5. Kc1 Bxd1 6. Nxd1
7 13.23 -4.35 1. Rg1 Re2 2. Bxe2 Ne4 3. Qa3 Qxa3
4. Bxg4 Rxb2
7-> 13.50 -4.35 1. Rg1 Re2 2. Bxe2 Ne4 3. Qa3 Qxa3
4. Bxg4 Rxb2
8 13.83 -- 1. Rg1
8 15.27 -8.55 1. Rg1 Re2 2. Bxe2 Ne4 3. Qxg7+ Kxg7
4. Bc3+ Kg6 5. f5+ Bxf5 6. Bh5+ Kxh5
7. Rgf1
8 59.24 -5.75 1. Kd2 Nxd5 2. Qxc5 Rxb2 3. Rc1 Nxf4
4. Qxc7 Nxg2
8 1:04 -5.39 1. Qxf6 gxf6 2. Bc3 Kg7 3. Rde1 Rxe1+
4. Rxe1 Qa3 5. Kd2 Rxb2 6. Bxb2 Qxb2
8-> 1:04 -5.39 1. Qxf6 gxf6 2. Bc3 Kg7 3. Rde1 Rxe1+
4. Rxe1 Qa3 5. Kd2 Rxb2 6. Bxb2 Qxb2
9 1:09 -5.36 1. Qxf6 gxf6 2. Bc3 Kg7 3. Rde1 Rxe1+
4. Rxe1 Qa3 5. Kd2 Rxb2 6. Bxh7 Kxh7
7. Bxb2 Qxb2
9-> 1:28 -5.36 1. Qxf6 gxf6 2. Bc3 Kg7 3. Rde1 Rxe1+
4. Rxe1 Qa3 5. Kd2 Rxb2 6. Bxh7 Kxh7
7. Bxb2 Qxb2
10 1:29 -- 1. Qxf6
10 2:07 -5.92 1. Qxf6 gxf6 2. Bc3 Bxd1 3. Rxd1 Kg7
4. Bc4 Qa3 5. Bb3 Re2
10 3:23 -5.55 1. Kd2 Rxb2 2. Bf2 Bxd1 3. Rxd1 Nxd5
4. Qc4 Qa5+ 5. Kc1 Nc3 6. Qxc5
10-> 3:25 -5.55 1. Kd2 Rxb2 2. Bf2 Bxd1 3. Rxd1 Nxd5
4. Qc4 Qa5+ 5. Kc1 Nc3 6. Qxc5
11 3:55 -- 1. Kd2
11 4:23 -7.16 1. Kd2 Ne4+ 2. Bxe4 Rxe4 3. Qd3 Rbe8
4. Nc4 Rd4 5. Ne3 Rxd3+ 6. Kxd3 Rxe3+
7. Kxe3 Bxd1 8. Ke4 Qxc2+
11 4:37 -6.19 1. Qxf6 gxf6 2. Bc3 Bxd1 3. Rxd1 Kg7
4. g4 Qa3 5. Kd2 Rxb2 6. Bxb2 Qxb2
11-> 6:13 -6.19 1. Qxf6 gxf6 2. Bc3 Bxd1 3. Rxd1 Kg7
4. g4 Qa3 5. Kd2 Rxb2 6. Bxb2 Qxb2
12 7:26 -6.19 1. Qxf6 gxf6 2. Bc3 Bxd1 3. Rxd1 Kg7
4. g4 Qa3 5. Kd2 Rxb2 6. Bxb2 Qxb2
12-> 11:47 -6.19 1. Qxf6 gxf6 2. Bc3 Bxd1 3. Rxd1 Kg7
4. g4 Qa3 5. Kd2 Rxb2 6. Bxb2 Qxb2
13 16:33 -6.01 1. Qxf6 gxf6 2. Bc3 Bxd1 3. Rxd1 Rb6
4. g4 h6 5. d6 Rxd6 6. Nc4 Rde6 7.
Kd2
time=16:39 cpu=100% mat=2 n=506249022 fh=91% nps=506k
ext-> chk=27597305 cap=747290 pp=632566 1rep=2815976 mate=445936
predicted=0 nodes=506249022 evals=152295032
endgame tablebase-> probes done=0 successful=0
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