Author: Drexel,Michael
Date: 09:41:02 02/14/05
Go up one level in this thread
On February 14, 2005 at 10:56:24, Vincent Diepeveen wrote:
>On February 14, 2005 at 10:33:12, Jon Dart wrote:
>
>>A few notes from Arasan's games in CCT7:
>>
>>Game 1 against Homer, Arasan had Black in a QID that Schroer called
>>"a super high-class line, very theoretical". Arasan was in book until
>>move 18. It appears Homer misplayed the next few moves. Arasan's score
>>rapidly climbed and it won.
>>
>>Arasan won easily against Alarm after it blundered here with .. Bxa3:
>>
>>[D] 3q1b1k/1p4pp/rn2rp2/BR2p3/p3N3/P2PP1P1/5P1P/1QR3K1 b - - 0 1
>>
>>Black is not in good shape already, but the pawn can't be taken.
>>
>>Arasan lost against Fafis. The opening was some unusual variant of the
>>Four Knights .. Arasan was out of book at move 7. Arasan's score
>>was positive until move 45. I haven't analyzed this yet so I am
>>not sure where it went wrong but it lost rapidly after that.
>>
>>This game against nullmover gave me some anxious moments. 7 .. Ne8
>>is unusual (..c6 is more common) and Arasan was out of book after
>>that. Black got what looked like a pretty scary k-side attack
>>in the KID. But Arasan defended - in fact its score was never
>>negative. Finally Arasan broke through on the q-side -- standard
>>play in the KID - and won. The nullmover author mentioned his program
>>had no passed pawn code and in general has a simple eval.
>>
>>[Event "?"]
>>[Site "chessclub.com"]
>>[Date "2005.02.13"]
>>[Round "?"]
>>[White "Arasan 9.0"]
>>[Black "nullmover"]
>>[Result "1-0"]
>>[ECO "E87"]
>>[WhiteElo "2594"]
>>[BlackElo "2202"]
>>[TimeControl "3000+3"]
>>
>>1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. d5 Ne8
>>8. Qd2 f5 9. exf5 gxf5 10. Bd3 Na6 11. Nge2 Nb4 12. O-O f4 13. Bf2
>>Nxd3 14. Qxd3 Rf5 15. Ne4 Rh5 16. b4 Rh6 17. Rfe1 Rg6 18. Kh1 Nf6
>>19. N2c3 Nxe4 20. Nxe4 Bf5 21. Rg1 Kh8 22. a4 Qe7 23. c5 dxc5
>>24. bxc5 Rg8 25. d6 Qf7 26. Rad1 Rh6 27. Rge1 cxd6 28. cxd6 b6
>>29. Qd5 Be6 30. Qd2 Bf8 31. Qc3 Qg7 32. g4 Rh3 33. g5 Bg4 34. Rd3 Bf5
>>35. a5 Rh5 36. Rd5 Bxe4 37. Rxe5 Qf7 38. R5xe4+ Bg7 39. Qc6 Rxg5
>>40. Re8 Rg6 41. axb6 axb6 42. Bxb6 Qa2 43. Rxg8+ Kxg8 44. Re8+
>> 1-0 {nullmover resigns}
>>
>>Against Pharaon, Arasan played a reasonable variant of the Slav and
>>was ok for a long time. Finally at this point Pharaon played Bh6:
>>
>>[D] q6k/3r1p2/p4Pp1/1pRn3p/3PQ3/P6P/1P1B4/6K1 w - - 0 1
>>
>>and then posted the Bishop on g7. Neither Arasan nor Crafty would play
>>Bh6 at the tournament time level on the hardware I have, but Crafty
>>does eventually fail high on it, with a score of +1.7, so this may
>>have been the decisive move.
>>
>>I wasn't watching for a while, but the next time I looked Pharaon was up
>>a Knight--not quite sure how that happened, but seems like it found a
>>nice tactic.
>>
>>Pharaon was strong even before its recent version update and now it
>>is really formidable.
>>
>>In the Chompster game, 37 .. a4 by Chompster was a bad mistake,
>>gifting Arasan with an outside passer:
>>
>>[D] 2q1r1k1/5pp1/5bp1/p7/4PQ2/1Br5/P4RPP/5R1K b - - 0 1
>>
>>But the game got into a bishop of opposite colors ending and was
>>drawn. I actually made the draw manually, which brought a protest
>>from sfarrell: he is right that under the rules this should not
>>have been done without the TD's consent. It seems several programs
>>broke this rule in this round.
>>
>>I was disappointed to lose the last game against cEng (witchess). It
>>had a very unusual opening:
>>
>>[Event "?"]
>>[Site "chessclub.com"]
>>[Date "2005.02.13"]
>>[Round "?"]
>>[White "witchess"]
>>[Black "Arasan 9.0"]
>>[Result "1-0"]
>>[ECO "C28"]
>>[WhiteElo "2397"]
>>[BlackElo "2594"]
>>[TimeControl "3000+3"]
>>
>>1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. Nf3 Nxe4 5. Nxe4 d5 6. Bd3 dxe4
>>7. Bxe4 Ne7 8. c3 f5 9. Bc2 e4 10. Ne5 Qd5 11. f4 exf3 12. Nxf3 Qe6+
>>13. Kf2 Qb6+ 14. d4 Be6 15. Ba4+ c6 16. Re1 Bd5 17. Bb3 O-O-O 18. Bg5
>>Qc7 19. Bxd5 cxd5 20. Qe2 Qb6 21. c4 Rd7 22. cxd5 Kb8 23. Qe5+ Ka8
>>24. d6 Rxd6 25. Bxe7 Bxe7 26. Qxe7 Rc8 27. Kg1 Rg8 28. Rac1 Rdd8
>> 1-0 {ArasanX resigns}
>>
>>I analyzed this overnight with Crafty but didn't find where Arasan
>>went wrong. I didn't like 7.. Ne7 and 7.. Bd6 seems to be better -
>>this has occurred in a few games with this line. After Ne7, Arasan
>>had its Bishop locked in and failed to develop it.
>
>I watched this game live and found it a very strong game from witchess.
>Especially because it plays without book. Let's be honest there. That's 700
>rating points (a real strong book).
Yes, at least :)
>
>>1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. Nf3 Nxe4 5. Nxe4 d5 6. Bd3 dxe4
>>7. Bxe4 Ne7
>
>Ne7 was first move out of book and to me it looked not only very strong, it is
>also well known theory.
>
>>8. c3
>
>Personally i would have played Bd3 there, but c3 is a very solid setup.
>
>> f5 9. Bc2 e4 10. Ne5 Qd5 11. f4 exf3 12. Nxf3 Qe6+
>>13. Kf2
>
>Kf2 is simply the best move. Amazingly no one plays it.
That´s not amazing at all since this line was only played by weak players so far
according to my database.
>
>> Qb6+
>
>I understand why programs go Qb6 here to avoid a quick d4-d5 later. However
>perhaps it's the wrong plan. Just development with Bd7 and you can still choose.
>
>Yet whites advantage is obvious after Bd7.
>
>For your own confidence, even the top programs see relative little score
>difference between Qb6 and other moves here. Only after a few moves they realize
>the problem bigtime for black.
>
>>14. d4 Be6 15. Ba4+ c6 16. Re1 Bd5 17. Bb3 O-O-O 18. Bg5
>
>After Bg5 the position is already completely won.
>
>>Qc7 19. Bxd5 cxd5 20. Qe2 Qb6 21. c4
>
>c4!!
>
>> Rd7 22. cxd5 Kb8 23. Qe5+ Ka8
>>24. d6 Rxd6 25. Bxe7 Bxe7 26. Qxe7 Rc8 27. Kg1 Rg8 28. Rac1 Rdd8
>> 1-0 {ArasanX resigns}
>
>It's a brilliant game from white.
>
>Black has made 0 mistakes and lost.
Huh?
Come on Vince, are you kidding again?
What about being serious for a change?
11...exf3? is a mistake for example
11...Be6 is clearly better.
Michael
>
>>I was a bit surprised by 13. Kf2, keeping the Queens on -
>>Arasan expected Qd2 and a Queen exchange.
>
>13.Kf2!! is simply an improvement of the theory which deserves 2 exclamation
>marks.
>
>Because black has made 0 mistakes and white has shown a superb novelty, this
>is therefore the best game of the tournament by a large margin.
>
>>cEng played a nice attack and won handily.
>
>>Overall I am happy with a 4.5 score but it seems like you have to
>>keep improving to stay even - this is the best Arasan version I have
>
>50 points a year at least.
>
>>ever had, and the best hardware, and it is still finishing in the
>>middle of the field. As others have said, the amateur chess community
>>generally is improving.
>>
>>I appreciate the opportunity to have my program play and hope we will
>>do a CCT8.
>>
>>--Jon
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