Colossus Chess 2021 !!

[mclane]

After 13 years waiting...
It's there.
http://www.colossusgames.co.uk/chess/co ... essuci.htm
Thanks Martin

As you promised... There will be an update.

[AdminX]

After 13 years waiting...
It's there.
http://www.colossusgames.co.uk/chess/co ... essuci.htm
Thanks Martin

As you promised... There will be an update.

Wait What! Thanks A lot.

[Chessqueen]

After 13 years waiting...
It's there.
http://www.colossusgames.co.uk/chess/co ... essuci.htm
Thanks Martin

As you promised... There will be an update.

Wait What! Thanks A lot.

So what rating are we looking at of this new Colossus UCI

[CMCanavessi]

After 13 years waiting...
It's there.
http://www.colossusgames.co.uk/chess/co ... essuci.htm
Thanks Martin

As you promised... There will be an update.

Wait What! Thanks A lot.

So what rating are we looking at of this new Colossus UCI

Looks to be around 2800

[MartinBryant]

Looks to be around 2800

I think that might be a bit high
2008b sits at 2642 on the CCRL Blitz list.
My latest test of 2021a vs 2008b (at 1m+1s) gave +133 ELO BUT I always feel that tests against previous versions give an inflated value?!
I'll be happy if it settles into the CCRL lists at around 2750

[CMCanavessi]

Great to see that FRC is on your to-do list.

[Chessqueen]

Great to see that FRC is on your to-do list.

I am running 10 games Knight Odds this is the 1st.

[pgn][Event "Knight Odds"]
[Date "2021.09.28"]
[Round "1"]
[White "Dragon-2.5-64bit-avx2 "]
[Black "Colossus2021a"]
[Result "1-0"]
[BlackElo "2800"]
[Time "13:50:34"]
[WhiteElo "3600"]
[TimeControl "900+10"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/R1BQKBNR w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "132"]
[WhiteType "program"]
[BlackType "program"]

1. d4 c5 2. e3 Nf6 3. d5 e6 4. c4 d6 5. Ne2 g6 6. Nc3 Bg7 7. Be2 O-O 8. O-O
exd5 9. cxd5 Nbd7 10. f3 Re8 11. a4 b6 12. e4 a6 13. Bg5 h6 14. Be3 Bb7 15.
Qd2 Kh7 16. Rf2 Qc7 17. Rff1 Re7 18. Rae1 Nh5 19. g4 Nhf6 20. h3 Rae8 21.
Rf2 Qd8 22. Rg2 Qa8 23. Rd1 Ne5 24. Qc2 g5 25. h4 gxh4 26. g5 hxg5 27. Bxg5
Ng6 28. Rf1 Qc8 29. Qd1 c4 30. Rh2 b5 31. Bxh4 Kg8 32. axb5 axb5 33. Bf2
Qd7 34. Bg3 Rc8 35. Be1 Qc7 36. Kh1 b4 37. Na2 b3 38. Nc3 Ree8 39. Bg3 Ba6
40. Rg1 Qe7 41. Bf2 Nd7 42. Be3 Nc5 43. Bg5 Qb7 44. Qf1 Qd7 45. Qg2 Be5 46.
f4 Bd4 47. Bg4 Qa7 48. f5 Bxg1 49. Qxg1 Rc7 50. Be3 f6 51. fxg6 Bc8 52.
Bxc8 Rcxc8 53. Bd4 Qg7 54. Rh7 Nxe4 55. Qg4 Nxc3 56. Rxg7+ Kxg7 57. Qd7+
Kxg6 58. Qg4+ Kh6 59. Bxc3 Rc7 60. Qh4+ Kg6 61. Qxf6+ Kh5 62. Bd2 Re5 63.
Qxd6 Rce7 64. Qh6+ Kg4 65. Qg6+ Kh3 66. Qg2+ Kh4 {Black resigns} 1-0[/pgn]

[mclane]

I am very happy that Martin did a new version, even when it took 13 years.
How good we are all still alive to test it.

So far the rating is increasing from version to version, only colossus X was maybe an exception.
I think it was broken. No matter if atari, amiga or pc version.
It seems version 4 was stronger then X.

But…
Today this is irrelevant.
We now have 2008b and today 2021a.

[Wolfgang]

Looks to be around 2800

I think that might be a bit high
2008b sits at 2642 on the CCRL Blitz list.
My latest test of 2021a vs 2008b (at 1m+1s) gave +133 ELO BUT I always feel that tests against previous versions give an inflated value?!
I'll be happy if it settles into the CCRL lists at around 2750

First of all: thanks for the new version after such a long time!!
CEGT 40/4 started: https://cegt.forumieren.com/t1581-testi ... 2021a#3059

We have 2460 for v2008b (we use another start rating than CCRL), so I expect something between 2550 and 2600 at our scale

[Steve Maughan]

Awesome!

There seems to be a few UCI / GUI issues using Colossus 2021 with the Shredder GUI. They PV in analysis mode is graded out, implying pondering. And the depth is shown as "0/20" i.e. fixed depth is always zero.

Looking forward to playing around with it.

Steve