Strelka -- clone status

[matejst]

Still waiting for answers. From C. C. first: what about that table? Is it stollen? Is it Rybka's data table?

What about Osipov having rewritten fruit in bitboard, as it was claimed in the post translated by Manev: is it true or false? And what about Rajlich: if Strelka is a clone of Rybka 1.0 beta, did he also wrote his engine using Fruit code, just like Osipov did?

That's the true question, isn't it?

Regards.

BS

[nczempin]

Still waiting for answers. From C. C. first: what about that table? Is it stolen? Is it Rybka's data table?

I think Chris is busy implementing the table in his own engine

[Uri Blass]

Still waiting for answers. From C. C. first: what about that table? Is it stollen? Is it Rybka's data table?

What about Osipov having rewritten fruit in bitboard, as it was claimed in the post translated by Manev: is it true or false? And what about Rajlich: if Strelka is a clone of Rybka 1.0 beta, did he also wrote his engine using Fruit code, just like Osipov did?

That's the true question, isn't it?

Regards.

BS

It is clearly false that osipov has rewritten fruit in bitboard.

Fruit has clearly more knowledge than strelka when strelka is a fast searcher.

Even old fruit has more knowledge about endgame than strelka.
I still did not learn the evaluation of strelka and maybe part of strelka's evaluation is similiar to fruit's middle game evaluation but even in that case I cannot describe it as rewrite of fruit.


Here is one example.
Fruit including old fruit2.0 can see the draw when strelka does not see the draw.

New game - Strelka 1.8 UCI
8/8/5bkp/7p/8/7B/7K/8 w - - 0 1

Analysis by Fruit 2.0:

1.Kh2-g1
= (0.00) Depth: 1/3 00:00:00
1.Kh2-g1 Kg6-g5
= (0.00) Depth: 2/5 00:00:00
1.Kh2-g1 Kg6-g5 2.Kg1-h1
= (0.00) Depth: 3/5 00:00:00
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4
= (0.00) Depth: 4/5 00:00:00
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2
= (0.00) Depth: 5/5 00:00:00
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5
= (0.00) Depth: 6/6 00:00:00 1kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 7/7 00:00:00 1kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 8/11 00:00:00 3kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 9/11 00:00:01 5kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 10/11 00:00:01 8kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 11/11 00:00:01 12kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 12/11 00:00:01 17kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 13/13 00:00:01 26kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 14/13 00:00:01 39kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 15/14 00:00:01 56kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 16/15 00:00:02 78kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 17/17 00:00:02 108kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 18/17 00:00:02 150kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 19/19 00:00:02 206kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 20/21 00:00:02 285kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 21/21 00:00:02 394kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 22/23 00:00:03 531kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 23/25 00:00:03 708kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 24/25 00:00:03 931kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 25/27 00:00:03 1234kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 26/27 00:00:03 1623kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 27/29 00:00:03 2113kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 28/30 00:00:04 2725kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 29/31 00:00:04 3454kN
1.Kh2-g1 Kg6-g5 2.Kg1-h1 Kg5-f4 3.Kh1-g2 Kf4-g5 4.Kg2-h1
= (0.00) Depth: 30/33 00:00:05 4358kN

(, 06.10.2007)


New game - Strelka 1.8 UCI
8/8/5bkp/7p/8/7B/7K/8 w - - 0 1

Analysis by Strelka 1.8 UCI:

1.Kh2-g3 Bf6-e5+ 2.Kg3-f3
-+ (-1.45) Depth: 1 00:00:00
1.Kh2-g3 Bf6-e5+ 2.Kg3-f3
-+ (-1.45) Depth: 2 00:00:00
1.Kh2-g3 Bf6-e5+ 2.Kg3-h4 Be5-d4
-+ (-1.46) Depth: 3 00:00:00
1.Kh2-g3 Kg6-g5 2.Bh3-e6 h5-h4+ 3.Kg3-f3
-+ (-1.46) Depth: 4 00:00:00
1.Kh2-g3 Kg6-g5 2.Kg3-f3 h5-h4 3.Bh3-e6
-+ (-1.46) Depth: 5 00:00:00
1.Bh3-e6 Bf6-e5+ 2.Kh2-h3 Kg6-g5 3.Be6-d5 h5-h4 4.Bd5-e4
-+ (-1.50) Depth: 6 00:00:00 3kN
1.Kh2-g3 Kg6-g5 2.Kg3-f3 h5-h4 3.Kf3-e4 Bf6-c3 4.Bh3-e6
-+ (-1.45) Depth: 7 00:00:00 10kN
1.Kh2-g3 Bf6-e5+ 2.Kg3-f3 h5-h4 3.Kf3-g4 Be5-g3 4.Kg4-f3 Kg6-g5 5.Bh3-e6
-+ (-1.42) Depth: 8 00:00:00 19kN
1.Kh2-g3 Kg6-g5 2.Kg3-f3 h5-h4 3.Kf3-e4 Bf6-c3 4.Bh3-d7 h6-h5 5.Bd7-e6
-+ (-1.45) Depth: 9 00:00:00 30kN
1.Kh2-g3 Bf6-e5+ 2.Kg3-f3 h5-h4 3.Kf3-g4 Be5-g3 4.Kg4-f3 Kg6-g5 5.Bh3-e6 Kg5-f6 6.Be6-d5
-+ (-1.42) Depth: 10 00:00:00 50kN
1.Kh2-g3 Bf6-e5+ 2.Kg3-f3 h5-h4 3.Kf3-g4 Be5-g3 4.Kg4-f3 Kg6-g5 5.Bh3-e6 Kg5-f6 6.Be6-d5 Bg3-e5
-+ (-1.45) Depth: 11 00:00:01 63kN
1.Kh2-g3 Kg6-g5 2.Kg3-f3 h5-h4 3.Kf3-e4 Bf6-e7 4.Bh3-d7 Be7-c5 5.Bd7-e6 Bc5-d6 6.Be6-d7 h6-h5
-+ (-1.45) Depth: 12 00:00:01 93kN
1.Kh2-g3 Kg6-g5 2.Kg3-f3 h5-h4 3.Kf3-e4 Bf6-e7 4.Bh3-d7 Be7-c5 5.Ke4-d5 Bc5-b4 6.Kd5-e4 Bb4-d6 7.Bd7-e6
-+ (-1.45) Depth: 13 00:00:01 118kN
1.Kh2-g3 Kg6-g5 2.Kg3-f3 h5-h4 3.Kf3-e4 Bf6-e7 4.Bh3-d7 h6-h5 5.Bd7-f5 Be7-d6 6.Bf5-e6 Bd6-f4 7.Be6-f5 Bf4-e3
-+ (-1.44) Depth: 14 00:00:01 211kN
1.Kh2-g3 Kg6-g5 2.Kg3-f3 h5-h4 3.Kf3-e4 Bf6-e7 4.Bh3-d7 h6-h5 5.Bd7-f5 Be7-c5 6.Bf5-d7 Kg5-f6 7.Ke4-f4 Bc5-d6+ 8.Kf4-e4 Kf6-g5
-+ (-1.45) Depth: 15 00:00:01 252kN
1.Kh2-g3 Kg6-g5 2.Kg3-f3 h5-h4 3.Kf3-e4 Bf6-e7 4.Bh3-d7 h6-h5 5.Bd7-f5 Be7-c5 6.Bf5-d7 Bc5-d6 7.Bd7-e6 Bd6-b4 8.Ke4-e5 Bb4-c3+ 9.Ke5-e4
-+ (-1.45) Depth: 16 00:00:01 315kN
1.Kh2-g3 Kg6-g5 2.Kg3-f3 h5-h4 3.Kf3-e4 Bf6-e7 4.Bh3-d7 h6-h5 5.Bd7-f5 Be7-c5 6.Bf5-d7 Bc5-b4 7.Bd7-f5 Bb4-d6 8.Bf5-e6 Kg5-f6 9.Be6-c4
-+ (-1.45) Depth: 17 00:00:01 399kN

(, 06.10.2007)