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Subject: Re: Mate announcements: Chessmaster rulez!

Author: Heiner Marxen

Date: 21:04:05 06/02/01

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On June 02, 2001 at 14:36:59, Mike S. wrote:

>On June 02, 2001 at 09:19:46, Uri Blass wrote:
>
>>I have some position with only one queen and also from real games(ICC
>>tournaments)
>>I used chessmaster6000(ss=10)
>
>Chess Tiger 14 has also shown some impressively fast mate announcements
>recently, so I chose it to compare with your Chessmaster 6000 results, using an
>P3/700 with 24 MB Hash. But except in the 2nd position, CM is (much) better
>here... (I didn't test the last two very long mates). CM's higher selectivity
>setting - 10 isn't the standard IIRC? - seems to work fine for this type of
>positions.

For comparison I have attached some Chest results.  They have been done
on a K7/600 with 350 MB hash (and no EGTBs).


>Celes-Amatuer
>[D]3r3k/p1rB3p/1p3q2/1Q2R1p1/2P1p3/2P1B3/P5K1/3R4 w - - 0 1
>>Mate in at most 11(chessmaster6000 needs a long time to see mate in 13)
>
>CT 14/P3-700: No mate announcement within 3 minutes.

There does not exist a mate in 9, 1.3 hours.

>[D]3r3k/p2B3p/1p3q2/1Qr2Rp1/2P1p3/2P1B3/P5K1/3R4 w - - 0 1
>>Chessmaster6000 on PIII850 says
>>40.Bc5 with the following scores
>>Mate in 11 13 seconds
>>Mate in 9 21 seconds
>>Mate in 8 30 seconds

>Analysis by Chess Tiger 14.0:
>
>1.Bxc5 a6 2.Rxf6 axb5 3.Bd4 Kg7 4.Rdf1
>  +-  (20.04) Depth:  9   00:00:00  103kN
>  +-  (#8)    Depth: 11   00:00:14  4053kN

Mate in 8 (11.4 min):
Bxc5 a6 Rxf6 axb5 Bd4 Kg7 Rdf1 Rxd7 Rd6+ Kg8 Rxd7 h5 Rg7+ Kh8 Rf8#

>Arasen-Fritz
>Hard
>[D]2kr3r/ppp2pQ1/4b2p/8/6Rq/8/PPP3K1/RNB1N3 b - - 0 1
>>Chessmaster can see mate in 16 after a long time when the main line
>begins with 1...Bxg4 2.Bf4
>
>CT 14/P3-700: No mate announcement within 3 minutes.

There is no mate in 8, 24.8 minutes.

>>I already posted the position after 20...Bxg4 21.Qc3 and in that position
>>chessmaster needs only 20 seconds to see mate in 10 and 24 seconds to
>>see mate in 9.
>
>CT 14/P3-700: No mate announcement within 3 minutes.
>
>Armegaddon-chesterX
>[D]8/6p1/1p3k2/1pq5/4pPQ1/1P4PK/P3P2P/2q5 b - - 0 1
>>Chessmaster6000
>>47...Qg1
>>mate in 12 18 seconds
>>mate in 8 24 seconds
>
>Analysis by Chess Tiger 14.0:
>
>1...g5 2.fxg5+ Q5xg5 3.Qxg5+ Kxg5 4.Kg2 Qe1 5.e3 Qe2+ 6.Kg1 Qxe3+ 7.Kf1 Qd3+
>8.Kf2 Qd2+ 9.Kg1 Qxa2
>  -+  (-11.36)   Depth: 8   00:00:00  99kN
>  -+  (-12.02)   Depth: 8   00:00:00  118kN
>1...Qf1+ 2.Kh4 Qfg1 3.h3 Qge3 4.a4
>  -+  (-12.26)   Depth: 8   00:00:00  140kN
>  -+  (-#7)      Depth: 11  00:01:21  19469kN

Mate in 7 (7.10 sec):
Qf1+ Kh4 Qfg1 Kh3 g5 Qd7 Qf5+ Qxf5+ Kxf5 fxg5 Kxg5 g4 Qxg4#

>[D]8/6p1/1p3k2/1pq5/4pPQK/1P4P1/P3P2P/5q2 b - - 0 1
>>48...Qf5+ mate in 12 8 seconds
>>48...g6 mate in 8 1:15
>>48...Qg2 mate in 7 1:19
>
>Analysis by Chess Tiger 14.0:
>
>1...Qf5 2.Qxf5+ Kxf5 3.g4+ Kf6 4.Kg3 Qg1+ 5.Kh3 b4 6.a4 bxa3 7.b4 a2 8.b5 Qe3+
>9.Kh4 Qxe2
>  -+  (-19.80)   Depth:  9   00:00:00  91kN
>  -+  (-23.54)   Depth: 11   00:00:07  1730kN
>1...Qg2 2.Qg5+ Qxg5+ 3.fxg5+ Kf5 4.h3 g6 5.a4 Qxe2 6.g4+ Kf4 7.axb5 Qf2#
>  -+  (-#7)   Depth: 11   00:03:26  49308kN
>  -+  (-#7)   Depth: 11   00:03:26  49308kN

Mate in 6 (1.91 sec):
Qfg1 Kh3   g5    Qd7   Qf5+   Qxf5+  Kxf5   fxg5   Kxg5   g4     Qxg4#

>Bringer-Chezz
>[D]8/5k2/8/7p/4K2P/6P1/5P2/8 w - - 0 1
>>Chessmaster without tablebases
>>6:49 f4 mate in 17
>>6:50 Ke5 mate in 16
>
>a) with 4-piece tbs:
>
>Analysis by Chess Tiger 14.0:
>
>1.g4 Kg6 2.gxh5+ Kxh5
>  +-  (13.56) Depth: 12   00:00:00  45kN, tb=236
>  +-  (#15)   Depth: 16   00:00:13  2921kN, tb=3871
>
>b) without tb access:
>
>CT 14/P3-700: No mate announcement within 3 minutes.

Mate in 16 (20.4 minutes) with f3 or Kf5.
Still waiting for a PV.  More probably later.

Heiner


>Hossa-Deep Shredder
>[D]6k1/p3q1b1/4N3/3p1PR1/2pP4/1p2P2P/7P/3K4 b - - 0 1
>>Chessmaster6000
>>1:46 52...b2 mate in 14
>
>CT 14/P3-700: No mate announcement within 3 minutes.
>
>Postmodernist-tristram
>Hard
>[D]4rb1r/pk1b2p1/1P1p1n1p/3p4/1R1P2P1/1Q2B3/1PP2P1P/4K2R w K - 0 1
>>Chessmaster6000
>>12:52 26.bxa7 mate in 15
>>main line begins with 26.bxa7 Kc7 27.Rb7+ Kd8 28.a8Q+ Kc7 29.Rxd7+ Kxd7
>>30.Qab7+ Ke6 31. Qd3 Ne4 32.b3
>
>(not tested)
>
>QuerkX-hiarcsX
>[D]1kr5/1b3pQ1/1q3p2/3p1P1p/1pBR4/6P1/P1r4P/1K1R4 b - - 0 1
>>Chessmaster6000
>>4:55 35...dxc4 mate in 16
>
>(not tested)
>
>Regards,
>M.Scheidl



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