83rd Amateur Series Division 1 (completed)

[Graham Banks]

83RD AMATEUR SERIES (Division 1)

Intel i7 4770k Quad
ChessGUI
256mb hash each where possible
3-4-5 piece tablebases
Ponder off
ChessGUI.cgb book
40 moves in 16 minutes repeating (adapted for the CCRL)
4 cycles 44 rounds
All engines 1CPU (64-bit where possible)

The bottom engine will face automatic relegation. Any other changes of division will be at my discretion and may not necessarily involve playoff matches.

Participants

Stockfish 12 64-bit
ShashChess 15.0 64-bit
SugaR XPrO NN 1.0 64-bit
Nemorino 6.00 64-bit
Ethereal 12.75 64-bit
Slow Chess Blitz Classic 2.4 64-bit
Igel 2.8.0 64-bit
Xiphos 0.6 64-bit
RubiChess 1.9 64-bit
Rofchade 2.3 64-bit
Booot 6.4 64-bit
Schooner 2.2 64-bit

[Gabor Szots]

RubiChess 1.9 64-bit

I would like to point out some controversy here.

Andreas has explained why the 'use NNUE' parameter is false by default. No problem there.
However, as far as I know we test engines with default settings. Is it then not more appropriate to call the engine RubiChess NNUE so that noone will think it does not use NNUE?

This is the same situation as with the new Nemorino where NNUE is also off by default. We test it with NNUE on but this fact is not represented in the name on the list. I myself submitted its games under the name simply Nemorion but I am not sure it should not have been Nemorino NNUE.

[Graham Banks]

83RD AMATEUR SERIES (Division 1)

Intel i7 4770k Quad
ChessGUI
256mb hash each where possible
3-4-5 piece tablebases
Ponder off
ChessGUI.cgb book
40 moves in 16 minutes repeating (adapted for the CCRL)
4 cycles 44 rounds
All engines 1CPU (64-bit where possible)

The bottom engine will face automatic relegation. Any other changes of division will be at my discretion and may not necessarily involve playoff matches.

Final Standings

34.0 - Stockfish 12 64-bit
32.0 - ShashChess 15.0 64-bit
29.5 - SugaR XPro NN 1.0 64-bit
24.0 - Nemorino 6.00 64-bit
23.5 - Ethereal 12.75 64-bit
20.5 - SlowChess Blitz Classic 2.4 64-bit
19.5 - Igel 2.8.0 64-bit
18.0 - Booot 6.4 64-bit
17.0 - Xiphos 0.6 64-bit
17.0 - RubiChess 1.9 64-bit
16.5 - RofChade 2.3 64-bit
12.5 - Schooner 2.2 64-bit

[Rubi]

Thanks for the tounament, Graham.

I looked into the final pgn and it confirms what I believed to see following the games in broadcast:
- Games are usually played in pairs using the same opening with black and white except...
- Game pair 11/77 don't use the same opening probably because game 77 was replayed by "biased opening" rule of the GUI

In my opinion this rule should be removed or at least removed if game is the reverse of an already played game. Don't know if this is possible though.

Regards, Andreas