New IL-4, 4d (Notes on Horizon 4.1)

[Igor Gorelikov]

Geschrieben von: / Posted by: Igor Gorelikov at 03 February 2004 15:41:22:

New IL-4, 4d (Notes on Horizon 4.1)
------------------------------------
The 23rd long event of New Long IL-4 is concluded.
Time control: 80'+3"
P3 1GHz 256MB; hash settings is up to 38MB in sum for each engine;
resign is set to 6; few 5-men Nalimov's TBs.
Galis WBTM 0.5.0 is used to arrange the event.

Results
P3 1GHz 256MB, 2004.01.30 - 2004.02.01
1 2 3 4 5 6 S R B
--------------------------------------------------
1 Dragon 4.5 X 1 = 1 = = 3= 1-2 8.75
2 SmarThink 0.10a 0 X = 1 1 1 3= 1-2 6.75
3 Gromit Chess 3.82 = = X = 0 1 2= 3-4 5.75
4 Gothmog 0.4.3 0 0 = X 1 1 2= 3-4 4.25
5 Horizon 4.1 = 0 1 0 X = 2 5 4.75
6 SlowChess 2.89b = 0 0 0 = X 1 6 2.75
--------------------------------------------------
Games 15/15, +4 -5 =6

After-event ratings
-------------------

Change Place Program Elo + - Games Score Av.Op. Draws
in places
-3 44 Gromit Chess 3.82 : 2388 114 110 34 57.4 % 2337 20.6 %
+5 39 Dragon 4.5 : 2411 132 167 20 47.5 % 2429 25.0 %
+5 51 SmarThink 0.10a : 2352 116 129 29 44.8 % 2388 20.7 %
0 58 Gothmog 0.4.3 : 2320 167 116 20 52.5 % 2303 35.0 %
-4 71 SlowChess 2.89b : 2252 116 167 20 47.5 % 2269 35.0 %
+1 67 Horizon 4.1 : 2282 117 88 35 54.3 % 2252 34.3 %

Notes on Horizon 4.1
--------------------
The following is a very strange game.
15. Nxh2?? is a suicidal move by Horizon 4.1
[Event "New IL-4, 4d"]
[Site "P3 1GHz 256MB"]
[Date "2004.01.31"]
[Round "2"]
[White "Horizon 4.1"]
[Black "Gothmog 0.4.3"]
[Result "0-1"]
[TimeControl "4800+3"]
[PairNo ""]
1. d4 d5 2. c4 dxc4 3. Nf3 c5 4. e3 cxd4 5. Bxc4 Qc7 6. Qb3 e6 7. exd4 Nc6
8. O-O Nf6 9. Bg5 Ng4 10. Nc3 a6 11. Qd1 Bd6 12. Kh1 h6 13. Be3 b5 14. Be2
Bxh2 15. Nxh2 Qxh2#
{Mate} 0-1
The second accident: Horizon 4.1 resings too early.
[Event "New IL-4, 4d"]
[Site "P3 1GHz 256MB"]
[Date "2004.02.01"]
[Round "5"]
[White "SmarThink 0.10a"]
[Black "Horizon 4.1"]
[Result "1-0"]
[TimeControl "4800+3"]
[PairNo ""]
1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8.
Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6 11. b3 Bf6 12. Bb2 Qe7 13. Qc2 e5 14. dxc5
bxc5 15. a3 Nc6 16. e3 Rab8 17. Nd2 Qe6 18. Bc3 Nd8 19. Ne4 Be7 20. Ba5 f5
21. Bc7 Bxe4 22. Bxe4 fxe4 23. Bxb8 Nc6 24. Bxd6 Bxd6 25. Qxe4 Na5 26. b4
cxb4 27. c5 Bb8 28. axb4 Qc4 29. Qxc4+ Nxc4 30. e4 a5 31. bxa5 Ba7 32. Rd5
{Black resigns} 1-0
All the games of the events reported today can be found at
http://www.digichess.gr/infiniteloop/games/last.zip
====================================================
For games and more info on the Infinite Loop apply to
http://www.digichess.gr/infiniteloop/home.php

[Ron Murawski]

Geschrieben von: / Posted by: Ron Murawski at 04 February 2004 07:44:58:
Als Antwort auf: / In reply to: New IL-4, 4d (Notes on Horizon 4.1) geschrieben von: / posted by: Igor Gorelikov at 03 February 2004 15:41:22:

New IL-4, 4d (Notes on Horizon 4.1)
------------------------------------
The 23rd long event of New Long IL-4 is concluded.
Time control: 80'+3"
P3 1GHz 256MB; hash settings is up to 38MB in sum for each engine;
resign is set to 6; few 5-men Nalimov's TBs.
Galis WBTM 0.5.0 is used to arrange the event.

Results
P3 1GHz 256MB, 2004.01.30 - 2004.02.01
1 2 3 4 5 6 S R B
--------------------------------------------------
1 Dragon 4.5 X 1 = 1 = = 3= 1-2 8.75
2 SmarThink 0.10a 0 X = 1 1 1 3= 1-2 6.75
3 Gromit Chess 3.82 = = X = 0 1 2= 3-4 5.75
4 Gothmog 0.4.3 0 0 = X 1 1 2= 3-4 4.25
5 Horizon 4.1 = 0 1 0 X = 2 5 4.75
6 SlowChess 2.89b = 0 0 0 = X 1 6 2.75
--------------------------------------------------
Games 15/15, +4 -5 =6

After-event ratings
-------------------

Change Place Program Elo + - Games Score Av.Op. Draws
in places
-3 44 Gromit Chess 3.82 : 2388 114 110 34 57.4 % 2337 20.6 %
+5 39 Dragon 4.5 : 2411 132 167 20 47.5 % 2429 25.0 %
+5 51 SmarThink 0.10a : 2352 116 129 29 44.8 % 2388 20.7 %
0 58 Gothmog 0.4.3 : 2320 167 116 20 52.5 % 2303 35.0 %
-4 71 SlowChess 2.89b : 2252 116 167 20 47.5 % 2269 35.0 %
+1 67 Horizon 4.1 : 2282 117 88 35 54.3 % 2252 34.3 %

Notes on Horizon 4.1
--------------------
The following is a very strange game.
15. Nxh2?? is a suicidal move by Horizon 4.1
[Event "New IL-4, 4d"]
[Site "P3 1GHz 256MB"]
[Date "2004.01.31"]
[Round "2"]
[White "Horizon 4.1"]
[Black "Gothmog 0.4.3"]
[Result "0-1"]
[TimeControl "4800+3"]
[PairNo ""]
1. d4 d5 2. c4 dxc4 3. Nf3 c5 4. e3 cxd4 5. Bxc4 Qc7 6. Qb3 e6 7. exd4 Nc6
8. O-O Nf6 9. Bg5 Ng4 10. Nc3 a6 11. Qd1 Bd6 12. Kh1 h6 13. Be3 b5 14. Be2
Bxh2 15. Nxh2 Qxh2#
{Mate} 0-1
The second accident: Horizon 4.1 resings too early.
[Event "New IL-4, 4d"]
[Site "P3 1GHz 256MB"]
[Date "2004.02.01"]
[Round "5"]
[White "SmarThink 0.10a"]
[Black "Horizon 4.1"]
[Result "1-0"]
[TimeControl "4800+3"]
[PairNo ""]
1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8.
Qc2 Nxc3 9. Qxc3 c5 10. Rd1 d6 11. b3 Bf6 12. Bb2 Qe7 13. Qc2 e5 14. dxc5
bxc5 15. a3 Nc6 16. e3 Rab8 17. Nd2 Qe6 18. Bc3 Nd8 19. Ne4 Be7 20. Ba5 f5
21. Bc7 Bxe4 22. Bxe4 fxe4 23. Bxb8 Nc6 24. Bxd6 Bxd6 25. Qxe4 Na5 26. b4
cxb4 27. c5 Bb8 28. axb4 Qc4 29. Qxc4+ Nxc4 30. e4 a5 31. bxa5 Ba7 32. Rd5
{Black resigns} 1-0
All the games of the events reported today can be found at
http://www.digichess.gr/infiniteloop/games/last.zip
====================================================
For games and more info on the Infinite Loop apply to
http://www.digichess.gr/infiniteloop/home.php

Hi Igor,
Thanks for the report. Considering that Horizon's self-destruction is responsible for its only two losses, I am quite pleased with its result in this tournament. Here's a quote from the Horizon homepage:


Known bugs:

There is a major bug in the search where moves that lose immediately
are occasionally played.
If an opposing chess engine offers a draw, Horizon gets out of synch
with the game moves. Eventually the opponent loses on time due to Horizon's
and WinBoard's confusion. Opposing engines known to cause this condition:
Frenzee and SlowChess.


I am hoping to start programming again shortly. I just want to address some bugs. I don't have the time to do much more than that right now.
Best regards,
Ron