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Subject: Re: Revised ECM Test Suite (update)

Author: Uri Blass

Date: 10:57:06 07/20/04

Go up one level in this thread


On July 20, 2004 at 11:36:05, Omid David Tabibi wrote:

>http://www.cs.biu.ac.il/~davoudo/pubs/ecmx.epd
>
>Remaining positions that are still unclear (the winning line is not clear):
>
>r3r1k1/pp3ppp/1qp5/2bbNQ2/5B2/2P5/PP3PPP/3RR1K1 w - - bm Rxd5; id "ECM.349";


Rxd5 seems to be a blunder

After Rxd5 cxd5 Fritz can see nothing even after long analysis so if there is a
move to find it is not Rxd5

New game
[D]r3r1k1/pp3ppp/1q6/2bpNQ2/5B2/2P5/PP3PPP/4R1K1 w - - 0 1

Analysis by Fritz 8:

2.Be3 Re7 3.Nd7 Qb5 4.Nxc5 Qxc5 5.Rd1 Qb5 6.Qg5
  µ  (-0.97)   Depth: 7/18   00:00:00  142kN
2.Qxf7+!
  µ  (-0.94)   Depth: 7/21   00:00:00  236kN
2.Qxf7+!
  µ  (-0.78)   Depth: 7/21   00:00:00  250kN
2.Qxf7+ Kh8 3.Qxd5 Bxf2+ 4.Kf1 Rf8 5.Re4 Rad8 6.Qb3 Qxb3 7.axb3
  ³  (-0.66)   Depth: 7/22   00:00:00  308kN
2.Qxf7+ Kh8 3.Qxd5 Bxf2+ 4.Kf1 Rf8 5.Re4 Rad8 6.Qb3 Qxb3 7.axb3
  ³  (-0.66)   Depth: 8/24   00:00:00  411kN
2.Qxf7+--
  µ  (-0.94)   Depth: 9/27   00:00:00  858kN
2.Qxf7+ Kh8 3.Qxd5 Bxf2+ 4.Kf1 Rf8 5.Nc4 Qa6 6.Re4 Be3 7.Qg5 Bxf4
  µ  (-1.31)   Depth: 9/29   00:00:00  1118kN
2.Be3!
  µ  (-1.28)   Depth: 9/29   00:00:00  1214kN
2.Be3!
  µ  (-1.12)   Depth: 9/29   00:00:00  1261kN
2.Be3 Re7 3.Nd7 Qb5 4.Nxc5 Qxc5 5.Rd1 Qb5 6.Rd2 Rae8 7.Qxd5
  µ  (-0.94)   Depth: 9/29   00:00:01  1519kN
2.Be3 Re7 3.Nd7 Qb5 4.Nxc5 Qxc5 5.Rd1 Qb5 6.b3 Qc6 7.Bd4
  µ  (-0.94)   Depth: 10/23   00:00:02  2483kN
2.Be3 Re7 3.Nd7 Qb5 4.Nxc5 Qxc5 5.Rd1 Qb5 6.b3 Qc6 7.Rd3 Rc7
  µ  (-1.06)   Depth: 11/32   00:00:04  5290kN
2.Be3 Re7 3.Nd7 Qc6 4.Nxc5 Qxc5 5.Rd1 Qb5 6.b3 Qc6 7.Qxd5 Qxc3 8.Qd8+ Re8
  µ  (-1.03)   Depth: 12/34   00:00:11  14969kN
2.Be3 Re7 3.Nd7 Qc6 4.Nxc5 Qxc5 5.Rd1 Qb5 6.b3 Qa5 7.Bd4 Rae8 8.h3 Qxa2 9.Qxd5
  µ  (-1.22)   Depth: 13/30   00:00:28  39052kN
2.Be3 Re7 3.Nd7 Qc6 4.Nxc5 Qxc5 5.Rd1 Qb5 6.Rd2 Rd8 7.Qg4 b6 8.Qd4 Ree8 9.h3
  µ  (-1.19)   Depth: 14/36   00:01:12  102443kN
2.Be3 Re7 3.Nd7 Qc6 4.Nxc5 Qxc5 5.Rd1 Qb5 6.Rd2 Rd8 7.Qg5 f6 8.Qf4 b6 9.Qd4 Re4
  µ  (-1.28)   Depth: 15/37   00:02:52  246025kN
2.Be3 Re7 3.Nd7 Qc6 4.Nxc5 Qxc5 5.Rd1 Qb5 6.Rd2 Rd8 7.Qg4 Qa5 8.a3 Qb6 9.Qh5
  µ  (-1.22)   Depth: 16/41   00:07:57  675496kN
2.Be3 Re7 3.Nd7 Qc6 4.Nxc5 Qxc5 5.Rd1 Qb5 6.Rd2 Rd8 7.h3 b6 8.Bd4 Re1+ 9.Kh2 f6
  µ  (-1.25)   Depth: 17/41   00:19:19  1661698kN

(, MyTown 20.07.2004)

Uri



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