Engine            Win     Draw    Lose
Fire_7.1_x64      4 [2/2] 2 [1/1] 0 [0/0]
demolito          2 [1/1] 0 [0/0] 4 [2/2]
Fruit-2-3-1-Linux 0 [0/0] 0 [0/0] 6 [3/3]
critter-16a-64bit 4 [2/2] 2 [1/1] 0 [0/0]

Conventional scoring:

Fire_7.1_x64      : 5
critter-16a-64bit : 5
demolito          : 2
Fruit-2-3-1-Linux : 0

Games: 12; Draws: 2, DrawPercentage: 16.67 %
Whitewins: 5; Blackwins: 5, Draws: 2

Cute Chess scoring:

Rank Name               Elo +/- Games Score Draws
   1 critter-16a-64bit  280 nan 6     83.3% 33.3%
   2 Fire_7.1_x64       280 nan 6     83.3% 33.3%
   3 demolito          -120 nan 6     33.3% 0.0%
   4 Fruit-2-3-1-Linux -inf nan 6      0.0% 0.0%

12 of 12 games finished.

Points

Fire_7.1_x64      : 250 : 83.33 %
critter-16a-64bit : 250 : 83.33 %
demolito          : 100 : 33.33 %
Fruit-2-3-1-Linux : 0   : 0 %

So Fruit-2-3-1-Linux and demolito drop out, and the other two go through to the next round.
Here are the games themselves. The “Mate of the Match” award goes to the critter-16a-64bit vs Fruit-2-3-1-Linux game.

Continue reading →

Engine            Win     Draw    Lose
Cyrano            0 [0/0] 0 [0/0] 6 [3/3]
Ethereal 20191110 4 [3/1] 2 [0/2] 0 [0/0]
Defenchess_2.2    3 [2/1] 2 [1/1] 1 [0/1]
andscacs          2 [1/1] 2 [2/0] 2 [0/2]

Conventional scoring:

Ethereal 20191110 : 5
Defenchess_2.2    : 4
andscacs          : 3
Cyrano            : 0

Games: 12; Draws: 3, DrawPercentage: 25 %
Whitewins: 6; Blackwins: 3, Draws: 3

Cute Chess scoring:

Rank Name              Elo +/- Games Score Draws
   1 Ethereal 20191110 280 nan 6     83.3% 33.3%
   2 Defenchess_2.2    120 333 6     66.7% 33.3%
   3 andscacs            0 271 6     50.0% 33.3%
   4 Cyrano           -inf nan 6     0.0%   0.0%

12 of 12 games finished.

Cyrano clearly had a tough time in this round.

Points:

Ethereal 20191110 : 248 : 82.67 %
Defenchess_2.2    : 198 : 66 %
andscacs          : 148 : 49.33 %
Cyrano            : 0   : 0 %

So Cyrano drops out, and the other three go through to the next round.
Here are the games themselves. The “Mate of the Match” award goes to Cyrano vs andscacs.

Continue reading →

So the survivors of round 1 progress to round 2, divided into three heats as follows:

Cyrano
Defenchess_2.2
Ethereal 20191110
andscacs

Fire_7.1_x64
Fruit-2-3-1-Linux
critter-16a-64bit
demolito

stockfish
laser
xiphos-0.6-linux-sse
arasanx-64
texel64

The third group is probably the strongest, with three strong engines.

Curiously, more wins for black than for white.

Engine               Win     Draw    Lose
texel64              2 [0/2] 2 [1/1] 2 [2/0]
fizbo2x64_no_pc_linu 1 [0/1] 0 [0/0] 5 [3/2]
xiphos-0.6-linux-sse 4 [1/3] 2 [2/0] 0 [0/0]
arasanx-64           2 [1/1] 2 [0/2] 2 [2/0]

Conventional scoring:

xiphos-0.6-linux-sse  : 5
texel64               : 3
arasanx-64            : 3
fizbo2x64_no_pc_linux : 1

Games: 12; Draws: 3, DrawPercentage: 25 %
Whitewins: 2; Blackwins: 7, Draws: 3

Cute Chess scoring:

Rank Name                   Elo +/- Games Score Draws
   1 xiphos-0.6-linux-sse   280 nan 6     83.3% 33.3%
   2 arasanx-64               0 271 6     50.0% 33.3%
   3 texel64                  0 271 6     50.0% 33.3%
   4 fizbo2x64_no_pc_linux -280 nan 6     16.7% 0.0%

Points

xiphos-0.6-linux-sse  : 252 : 84 %
texel64               : 154 : 51.33 %
arasanx-64            : 152 : 50.67 %
fizbo2x64_no_pc_linux : 52  : 17.33 %

So fizbo2x64_no_pc_linux drops out, and the other three go through to the next round. I noticed in the logs that fizbo2 was pondering a lot of illegal moves too.

Here are the games themselves. The “Mate of the Match” award is shared by the texel64 vs xiphos-0.6-linux-sse and arasanx-64 vs fizbo2x64_no_pc_linux matches.

Continue reading →

This had some heavy hitters in…

Engine               Win     Draw    Lose
komodo-10-linux      1 [1/0] 1 [1/0] 4 [1/3]
stockfish 111119 64  5 [3/2] 1 [0/1] 0 [0/0]
laser                2 [1/1] 3 [2/1] 1 [0/1]
rofChade             1 [1/0] 1 [0/1] 4 [2/2]

Conventional scoring:

stockfish 111119 64 : 5.5
laser               : 3.5
rofChade            : 1.5
komodo-10-linux     : 1.5

Games: 12; Draws: 3, DrawPercentage: 25 %
Whitewins: 6; Blackwins: 3, Draws: 3

Cute Chess scoring:

Rank Name                          Elo     +/-   Games   Score   Draws
   1 stockfish 111119 64           417     nan       6   91.7%   16.7%
   2 laser                          58     226       6   58.3%   50.0%
   3 rofChade                     -191     nan       6   25.0%   16.7%
   4 komodo-10-linux              -191     nan       6   25.0%   16.7%

12 of 12 games finished.

Points

stockfish 111119 64 : 274 : 91.33 %
laser               : 174 : 58 %
rofChade            : 74  : 24.67 %
komodo-10-linux     : 72  : 24 %

So I will let rofChade and Komodo drop out, and the other two go through to the next round.

Here are the games themselves. The “Mate of the Match” award must go to laser vs komodo-10-linux, with the komodo-10-linux vs rofChade match as runner-up.

Continue reading →

Engine                  Win     Draw    Lose
critter-16a-64bit       5 [2/3] 1 [1/0] 0 [0/0]
gnuchess-5.50-32        1 [1/0] 0 [0/0] 5 [2/3]
demolito                4 [2/2] 1 [0/1] 1 [1/0]
discocheck_5.2.1_x86    1 [1/0] 0 [0/0] 5 [2/3]

Conventional scoring:
critter-16a-64bit       : 5.5
demolito                : 4.5
discocheck_5.2.1_x86-64 : 1
gnuchess-5.50-32        : 1

Games: 12; Draws: 1, DrawPercentage: 8.33 %
Whitewins: 6; Blackwins: 5, Draws: 1

Cute Chess scoring:

Rank Name                          Elo     +/-   Games   Score   Draws
   1 critter-16a-64bit             417     nan       6   91.7%   16.7%
   2 demolito                      191     nan       6   75.0%   16.7%
   3 gnuchess-5.50-32             -280     nan       6   16.7%    0.0%
   4 discocheck_5.2.1_x86-64      -280     nan       6   16.7%    0.0%

12 of 12 games finished.

Points

critter-16a-64bit       : 276 : 92
demolito                : 226 : 75.33
discocheck_5.2.1_x86-64 : 48  : 16
gnuchess-5.50-32        : 48  : 16

So under the circumstances, both gnuchess-5.50-32 and discocheck_5.2.1_x86-64 drop out, and the other two go through to the next round.

Here are the games themselves. The “Mate of the Match” award must go to gnuchess-5.50-32 vs discocheck_5.2.1_x86-64 (last game), with the game between demolito vs discocheck_5.2.1_x86-64 as runner-up.

Continue reading →

Engine                          Win     Draw    Lose
Fire_7.1_x64                    5 [3/2] 0 [0/0] 1 [0/1]
andscacs                        5 [3/2] 0 [0/0] 1 [0/1]
Fruit-2-3-1-Linux               2 [1/1] 0 [0/0] 4 [2/2]
GarboChess2-32                  0 [0/0] 0 [0/0] 6 [3/3]

Games: 12; Draws: 0, DrawPercentage: 0 %
Whitewins: 7; Blackwins: 5, Draws: 0

Cute Chess scoring:

Rank Name                          Elo     +/-   Games   Score   Draws
   1 andscacs                      280     nan       6   83.3%    0.0%
   2 Fire_7.1_x64                  280     nan       6   83.3%    0.0%
   3 Fruit-2-3-1-Linux            -120     nan       6   33.3%    0.0%
   4 GarboChess2-32               -inf     nan       6    0.0%    0.0%

12 of 12 games finished.

Conventional scoring:

Fire_7.1_x64      : 5
andscacs          : 5
Fruit-2-3-1-Linux : 2
GarboChess2-32    : 0

Points:

Fire_7.1_x64            : 248   : 82.67 %
andscacs                : 248   : 82.67 %
Fruit-2-3-1-Linux       : 100   : 33.33 %
GarboChess2-32          : 0     : 0 %

So GarboChess2-32 drops out, and the other three go through to the next round.

Here are the games themselves. The “Mate of the Match” award must go to andscacs vs GarboChess2-32 (last game), with the GarboChess2-32 vs Fruit-2-3-1-Linux match as runner-up (though that may also be considered suicide rather than mate.

Continue reading →

I’m not sure how many seasons there will be, but for now, will post the results as they happen, so we can see how things play out. This is Round 1 Heat 1.

Engine                          Win     Draw    Lose
Alaric707                       0 [0/0] 1 [1/0] 5 [2/3]
Ethereal 20191110               5 [3/2] 1 [0/1] 0 [0/0]
Cyrano                          1 [1/0] 1 [0/1] 4 [2/2]
Defenchess_2.2                  4 [2/2] 1 [1/0] 1 [0/1]

Games: 12; Draws: 2, DrawPercentage: 16.67%
Whitewins: 6; Blackwins: 4, Draws: 2

Cute Chess scoring:

Rank Name                          Elo     +/-   Games   Score   Draws
   1 Ethereal 20191110             417     nan       6   91.7%   16.7%
   2 Defenchess_2.2                191     nan       6   75.0%   16.7%
   3 Cyrano                       -191     nan       6   25.0%   16.7%
   4 Alaric707                    -417     nan       6    8.3%   16.7%

12 of 12 games finished.

Conventional scoring:

Ethereal 20191110 : 5.5
Defenchess_2.2    : 4.5
Cyrano            : 1.5
Alaric707         : 0.5

Points:

Ethereal 20191110 : 274 : 91.33 %
Defenchess_2.2    : 224 : 74.67 %
Cyrano            : 74  : 24.67 %
Alaric707         : 24  : 8 %

So Alaric707 drops out, and the other three go through to the next round.

Here are the games themselves. The “Mate of the Match” award must go to Ethereal 20191110 vs Alaric707, with the Alaric707 vs Defenchess_2.2 match as runner-up.

Continue reading →

I have been testing various engines against each other playing Douglas Modern chess and have now got to the point where I have identified some very strong engines, some strong, and the rest. To give the better ones a shot at being champion, I’ve started a series of round-robin heats, with four engines at a time. After the 12 games, the best three will advance to the next round. The format of the final(s) is still to be decided.

The groups I’m using are:

Alaric707
Cyrano
Defenchess_2.2
Ethereal 20191110

Fire_7.1_x64
Fruit-2-3-1-Linux
GarboChess2-32
andscacs

critter-16a-64bit
demolito
discocheck_5.2.1_x86-64
gnuchess-5.50-32

komodo-10-linux
laser
rofChade
stockfish

texel64
xiphos-0.6-linux-sse
arasanx
fizbo

I expect the final four to probably be Stockfish, Xiphos, and two of Laser, FIre, or  Ethereal.

Some ideas that human players can implement to extend Douglas Modern chess. These changes would require chess engines to be updated to play to these rules.

Castling

We could allow castling on the queen’s side, done in the same manner as for castling on the king’s side in regular chess. The diagrams illustrate before-and-after:

becomes

Pawn reverse

It’s curious that the pawn is the only piece restricted to only advancing.

Continue reading →