47th Amateur Series Division 3

Discussion of computer chess matches and engine tournaments.

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Graham Banks
Posts: 45274
Joined: Sun Feb 26, 2006 10:52 am
Location: Auckland, NZ

Final Standings

Post by Graham Banks »

47TH AMATEUR SERIES (Division 3)

Intel i5 Quad
ChessGUI
256mb hash each
3-4-5 piece tablebases
Ponder off
Xmas2640-12.cgb book
40 moves in 25 minutes repeating (adapted for the CCRL)
4 cycles 44 rounds
All engines 64-bit 1CPU (where available)
The top engine will gain automatic promotion and the bottom engine will gain automatic relegation. Any other changes of division will be at my discretion and may not necessarily involve playoff matches.
Final Standings

28.5 - Rodent 1.4 64-bit
27.0 - Nirvanachess 1.6 64-bit
26.0 - Arasan 17.2 64-bit
26.0 - Fizbo 1.1 64-bit
25.0 - Cheng4 0.36c 64-bit
24.5 - Scorpio 2.7.6 64-bit
20.5 - Godel 3.4.9 64-bit
18.5 - Rhetoric 1.2 64-bit
18.5 - Dirty 20Apr2013 64-bit
18.5 - iCE 1.0 64-bit
17.5 - Andscacs 0.63 64-bit
13.5 - RedQueen 1.1.97 64-bit


The complete tournament pgn (zipped) can be downloaded here:
http://kirill-kryukov.com/chess/discuss ... p?id=32276
gbanksnz at gmail.com
PK
Posts: 913
Joined: Mon Jan 15, 2007 11:23 am
Location: Warsza

Re: Standings after Round 42 of 44

Post by PK »

I have a feeling that Rodent overperformed here a bit. Generally I enjoyed watching its middlegame, but became anxious whenever it entered the endgame, as it has often displayed unreasonably high scores. Twice it happened due to a bug (one opposite bishop endgame with many pawns, the other time the absence of scaling down in KRm vs KRm, where it showed +0.5 or so), but there were far too many endgames evaluated as over 1 pawn advantage that petered out in a draw. Perhaps it is just impossible to have both speculative midgame eval and accurate endgame eval.
PK
Posts: 913
Joined: Mon Jan 15, 2007 11:23 am
Location: Warsza

Re: Standings after Round 42 of 44

Post by PK »

This is the game I enjoyed most: Rodent sacks a bishop and wins without it.

[pgn]

[Event "47th Amateur D3"]
[Site "ChessGUI4"]
[Date "2014.06.09"]
[Round "40.1"]
[White "RedQueen 1.1.97 64-bit"]
[Black "Rodent 1.4 64-bit"]
[Result "0-1"]
[ECO "A07"]
[Opening "Reti Opening"]
[Variation "KIA, 2.g3 Nc6 3.Bg2 e5 4.d3 Nf6 5.O-O Be7"]
[TimeControl "40/1500:40/1500:40/1500"]
[Termination "normal"]
[PlyCount "91"]
[WhiteType "human"]
[BlackType "human"]

{i5 Quad} 1. c4 c5 2. g3 Nf6 3. Bg2 d5 4. Nf3 Nc6 5. O-O d4 6. e3 e5 7.
exd4 exd4 8. d3 Be7 9. Bf4 O-O 10. Ne5 Nxe5 11. Bxe5 Bd6 12. Bxf6 Qxf6 13.
Nd2 Qh6 14. f4 Rb8 15. Qb3 b6 16. Qa4 a5 17. Rae1 Bc7 18. Rf2 Qd6 19. Bc6
Bf5 20. Ne4 Qe7 21. Rff1 Qd8 22. Kg2 Qc8 23. Rg1 Rd8 24. h4 Qe6 25. h5 Bh3+
26. Kf2 Bg4 27. Rh1 Qf5 28. Kg2 Bxh5 29. Ng5 Bxf4 30. gxf4 Qxf4 31. Nh3
Qd2+ 32. Nf2 Rd6 33. Kf1 Rf6 34. Rh2 Qxd3+ 35. Kg1 Qd2 36. Rf1 Qg5+ 37. Rg2
Qe3 38. Bd5 d3 39. Qb3 Be2 40. Qc3 Rg6 41. Rb1 Re8 42. Rxg6 hxg6 43. Bg2
Re5 44. Qc1 Qg3 45. Nh1 Qh4 46. Nf2 0-1
[/pgn]
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Graham Banks
Posts: 45274
Joined: Sun Feb 26, 2006 10:52 am
Location: Auckland, NZ

Re: Standings after Round 42 of 44

Post by Graham Banks »

PK wrote:I have a feeling that Rodent overperformed here a bit. Generally I enjoyed watching its middlegame, but became anxious whenever it entered the endgame, as it has often displayed unreasonably high scores. Twice it happened due to a bug (one opposite bishop endgame with many pawns, the other time the absence of scaling down in KRm vs KRm, where it showed +0.5 or so), but there were far too many endgames evaluated as over 1 pawn advantage that petered out in a draw. Perhaps it is just impossible to have both speculative midgame eval and accurate endgame eval.
Congratulations on a well deserved victory.

Rodent's rating in our 40/40 list suggests that this wasn't as much of a surprise as you think. :wink:
gbanksnz at gmail.com
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cdani
Posts: 2204
Joined: Sat Jan 18, 2014 10:24 am
Location: Andorra

Re: Standings after Round 42 of 44

Post by cdani »

Congratulations also to Rodent!

I hope Andscacs will do better with newer versions :-)
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Graham Banks
Posts: 45274
Joined: Sun Feb 26, 2006 10:52 am
Location: Auckland, NZ

Re: Standings after Round 42 of 44

Post by Graham Banks »

cdani wrote:Congratulations also to Rodent!

I hope Andscacs will do better with newer versions :-)
I'm sure that it will! :)
gbanksnz at gmail.com