It’s been a while since I’ve posted any chess, and development in the engine world has continued apace, so it was time to see how they do with Douglas Modern Chess.

I consulted recent events at https://www.tcec-chess.com/ as well as the rankings at https://ccrl.chessdom.com/ccrl/4040/ and selected the following engines to compete:

Bezerk
Stockfish 15
Ethereal
SlowChess 2.83
Koivisto_8.9
RubiChess
PeSTO
rofChade
Seer
arasanx-64
zahak
Igel
velvet-v3.3.0

Pesto was not one of the top engines, it’s new, from the rofChade team, so I thought I would include it. I did try to add LC0, Cute Chess loaded it, but they still won’t talk to each other so there is still something wrong with my installation.

Initial rounds were round-robin and run at short time controls (3 min + 5 seconds, slowly adding 1 minute for each succeeding round). Continue reading →

If the perspective looks odd, stand further away.

The 4th dynasty did not know π, φ, e, or ρ.

So I published the most important archaeological paper of the century …. which provides evidence (academic weasel words for “proves”) that the Great Pyramid is not 4th Dynasty.

How?

Simply, the so-called King’s Chamber has at least π, φ, e, and √2 all built into the block patterns on the walls. Since the 4th dynasty did not know π or φ, let alone e, they could not possibly have built it (unless you have a flock of black swans in your back yard).

The paper is at The Writing is on the Wall: The King’s Chamber Game with an addendum with all the diagrams at The King’s Chamber Game Diagrams.

Here’s π and φ combined into one diagram.

π and φ in the King’s Chamber

The first two rows have 31 blocks, the next two have 42 … 3142 … π.

Continue reading →

I have uploaded a new paper that shows how the pyramid sizes at Giza are related to the planets.

You can read the paper on Zenodo or Academia.

Here’s a teaser image.

Giza with planet names.

Herewith the results from heat 2 (final heat). Time control was 5 minutes plus 10 seconds per move.

Summary:
Games: 12; Draws: 6, DrawPercentage: 50 %
Whitewins: 3; Blackwins: 3, Draws: 6

Conventional scoring:

Raubfisch X41d3._sl  : 5.5
Stockfish 11         : 3
Fire_7.1_x64         : 2
xiphos-0.6-linux-sse : 1.5

Results table:

Engine                    Win     Draw    Lose
Raubfisch X41d3._sl       5 [3/2] 1 [0/1] 0 [0/0]
Stockfish 11              1 [0/1] 4 [3/1] 1 [0/1]
Fire_7.1_x64              0 [0/0] 4 [2/2] 2 [1/1]
xiphos-0.6-linux-sse      0 [0/0] 3 [1/2] 3 [2/1]

My scoring system which takes black/white into account:

Raubfisch X41d3._sl  : 14.08
Stockfish 11         : 7.98
Fire_7.1_x64         : 0.11
xiphos-0.6-linux-sse : -2.42

My points-based scoring system, which takes black/white and number of moves into account:

Engine                 Points  Percentage
Raubfisch X41d3._sl  : 274   : 91.33 %
Stockfish 11         : 150   : 50 %
Fire_7.1_x64         : 100   : 33.33 %
xiphos-0.6-linux-sse : 76    : 25.33 %

Cutechess scoring:

Rank Name                  Elo +/- Games Score Draws
1    Raubfisch X41d3._sl   417 nan 6     91.7% 16.7%
2    Stockfish 11            0 173 6     50.0% 66.7%
3    Fire_7.1_x64         -120 162 6     33.3% 66.7%
4    xiphos-0.6-linux-sse -191 238 6     25.0% 50.0%

So Fire and Xiphos drop out, and Raubfisch and Stockfish go through to the semi-finals.

Here are the games themselves. The “Mate of the Match” award goes to Xiphos-Stockfish match (second one below).

Continue reading →

Herewith the results from heat 1. Time control was 5 minutes plus 10 seconds per move.

Summary:
Games: 12; Draws: 4, DrawPercentage: 33.3%
Whitewins: 5; Blackwins: 3, Draws: 4

Conventional scoring:

Raubfisch_ME262_GTZ20d3._sl : 5.5
Zeus 4.1.7 M                : 4
rofChade 2.203              : 1.5
Komodo 11                   : 1

Results table:

Engine                     Win     Draw     Lose
Raubfisch_ME262_GTZ2       5 [3/2] 1 [0/1]  0 [0/0] 
Zeus 4.1.7 M               3 [2/1] 2 [1/1]  1 [0/1]
rofChade 2.203             0 [0/0] 3 [2/1]  3 [1/2] 
Komodo 11                  0 [0/0] 2 [1/1]  4 [2/2]

My scoring system which takes black/white into account:

Raubfisch_ME262_GTZ20d3._sl : 16.46
Zeus 4.1.7 M                : 10.18
rofChade 2.203              : -2.9
Komodo 11                   : -9.89

My points-based scoring system, which takes black/white and number of moves into account:

Engine                        Points  Percentage
Raubfisch_ME262_GTZ20d3._sl : 274   : 91.33%
Zeus 4.1.7 M                : 198   : 66%
rofChade 2.203              : 74    : 24.67%
Komodo 11                   : 50    : 16.67%

Cutechess scoring:

Rank Name                        Elo +/- Games Score Draws
1    Raubfisch_ME262_GTZ20d3._sl 417 nan 6     91.7% 16.7%
2    Zeus 4.1.7 M                120 333 6     66.7% 33.3%
3    rofChade 2.203             -191 238 6     25.0% 50.0%
4    Komodo 11                  -280 nan 6     16.7% 33.3%

So Raubfisch_ME262_GTZ20d3._sl and Zeus 4.1.7 M  go through to the semi-finals.

Herewith the games. Mate of the Match award goes to the Raubfisch_ME262_GTZ20d3._sl vs Zeus 4.1.7 M game, towards the bottom.

Continue reading →

Continues from Part 1.

The second lemma needs to be deduced from reading these pages from chapter two of Christopher Milbourne’s Illustrated History of Magic published in 1975. (Dear publisher: please treat this as free advertising for your wonderful book.). Yes it’s all relevant, and it starts off with a story about Khufu. Click to enlarge for easier reading.

Continue reading →