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Subject: Re: My first endgame-test in new year 2003

Author: Christopher A. Morgan

Date: 07:35:03 01/01/03

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Fritz 8 on Athlon 750, 96MB hash, most 3,4 and 5 man Tablebases (5.1Gig of ~ 7.1
Gig) likes Qf6 to begin with, then at 23 seconds prefers Qe6. Final analysis at
2:05, below, did not change through five minutes.

New game
5Q2/3k4/1q6/3n4/2pP4/2P5/P1K5/8 b - - 0 1

Analysis by Fritz 8:

1...Qf6 2.Qxf6 Nxf6 3.Kc1 Nd5 4.Kc2 Kc6 5.Kd2 Kb5 6.Kc2 Ka4 7.Kb2 Ne3 8.a3 Nd5
  -+  (-2.13)   Depth: 7/16   00:00:00  16kN
1...Qf6 2.Qxf6 Nxf6 3.Kc1 Nd5 4.Kc2 Kc6 5.Kd2 Kb5 6.Kc2 Ka4 7.Kb2 Ne3 8.a3 Nd5
  -+  (-2.13)   Depth: 8/17   00:00:00  36kN
1...Qf6 2.Qxf6 Nxf6 3.Kc1 Nd5 4.Kc2 Kc6 5.Kd2 Kb5 6.Kc2 Ka4 7.Kb2 Ne3 8.a3 Nd5
  -+  (-2.13)   Depth: 9/19   00:00:00  87kN
1...Qf6 2.Qxf6 Nxf6 3.Kc1 Nd5 4.Kc2 Kc6 5.Kd2 Kb5 6.Kc2 Ka4 7.Kb2 Ne3 8.a3 Nd5
  -+  (-2.13)   Depth: 10/24   00:00:00  202kN, tb=2
1...Qf6 2.Qxf6 Nxf6 3.Kc1 Nd5 4.Kc2 Kc6 5.Kd2 Kb5 6.Kc2 Ka4 7.Kb2 Ne3 8.a3 Nd5
  -+  (-2.13)   Depth: 11/26   00:00:02  645kN, tb=12
1...Qf6 2.Qxf6 Nxf6 3.Kc1 Nd5 4.Kc2 Kc6 5.Kd2 Kb5 6.Kc2 Ka4 7.Kb2 Ne3 8.a3 Nd5
  -+  (-2.13)   Depth: 12/39   00:00:06  2354kN, tb=66
1...Qe6!
  -+  (-2.16)   Depth: 12/50   00:00:23  9257kN, tb=164
1...Qe6 2.Qf2 Qe4+ 3.Kb2 Nf4 4.Qh2 Nd3+ 5.Kc2 Kc6 6.Qh6+ Kb5
  -+  (-2.28)   Depth: 12/50   00:00:36  15110kN, tb=217
1...Qe6 2.Qf2 Qe4+ 3.Kb2 Nf4 4.Qg1 Nd3+ 5.Ka1 Kc7 6.Qh2+ Kc6
  -+  (-2.28)   Depth: 13/47   00:01:02  25811kN, tb=664
1...Qe6 2.Qf2 Qe4+ 3.Kb2 Nf4 4.Qg1 Nd3+ 5.Ka1 Kc7 6.Qh2+ Kc6
  -+  (-2.28)   Depth: 14/43   00:02:05  51146kN, tb=1994



On January 01, 2003 at 05:57:30, Eduard Nemeth wrote:

>[D]5Q2/3k4/1q6/3n4/2pP4/2P5/P1K5/8 b - -
>
>In a game two player with Elo 2400, black played now 1...Qf6!
>This is the best move, then after 2. Qxf6, black won easy after few
>moves!
>
>On my P600, Zarkov 5.0 find this move under Genius 7 in only 1:40 minutes!
>
>Which program find this strongest move too?
>
>Fallow variation in the HV  is only a draw:
>
>
>[Event "?"]
>[Site "?"]
>[Date "2003.01.01"]
>[Round "?"]
>[White "?"]
>[Black "?"]
>[Result "*"]
>[SetUp "1"]
>[FEN "5Q2/3k4/1q6/3n4/2pP4/2P5/P1K5/8 b - -"]
>
>1... Qg6+ 2. Kb2 Ne3 3. Ka3 Qd6+ 4. Qxd6+ Kxd6 5. Kb4 * and draw.
>
>My Computerchess:
>
>http://www.beepworld.de/members37/computerschach/
>
>Eduard



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