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TCEC Season 8,
a private tournament directed and organized by Martin Thoresen and supported by the Chessdom Arena, started on August 21, 2015. There are 3 Stages plus the Superfinal. Stage 1, a single-round robin consisting of two seeded sub-divisions of 12 engines each, is played without book openings. In Stage 2 the top six surviving engines from each of the two divisions in Stage 1 compete in double round-robin, using a two-move book designed by Adam Hair and checked by Nelson Hernandez (alias Cato the Younger) for statistical and evaluative play-balance. Stage 3 and the Superfinal used an opening book of 8 moves.
TCEC Season 8 Logo [1]

Participants


Engine
CC
Authors
Stages


1
Arasan
US
Jon Dart
1a




2
Cheng4
CZ
Martin Sedlak
1a




3
Chiron
IT
Ubaldo Andrea Farina
1b
2



4
Crafty [2]
US
Robert Hyatt
1b




5
Equinox
IT
Giancarlo Delli Colli
1b




6
EXchess
US
Daniel Homan
1a




7
Fire
BE
Norman Schmidt, et al.
1a
2



8
Fruit Reloaded
FR/DE/US
Fabien Letouzey, Daniel Mehrmann, Ryan Benitez
1a




9
Gaviota
AR
Miguel A. Ballicora
1a




10
Ginkgo
DE
Frank Schneider
1a
2



11
Gull
RU
Vadim Demichev
1a
2
3


12
Hannibal
US/PH
Sam Hamilton, Edsel Apostol
1b
2
3


13
Houdini
BE
Robert Houdart
1b
2
3


14
Jonny
DE
Johannes Zwanzger
1a




15
Junior
IL
Amir Ban, Shay Bushinsky
1b




16
Komodo
US
Don Dailey, Larry Kaufman, Mark Lefler
1a
2
3
Superfinal
Winner
17
Nightmare
NL
Joost Buijs
1b




18
Nirvana
US
Thomas Kolarik
1b
2



19
Pedone
IT
Fabio Gobbato
1b




20
Protector
DE
Raimund Heid
1a
2
3


21
Scorpio
ET
Daniel Shawul
1b




22
Stockfish
NO/IT/FI
Tord Romstad, Marco Costalba, Joona Kiiski et al.
1b
2
3
Superfinal

23
Texel
SE
Peter Österlund
1a
2



24
The Baron
NL
Richard Pijl
1b
2




Stage 1

August 21, 2015 - September 10, 2015 The top 6 from each of Stage 1A/1B will qualify for Stage 2.

Stage 1a

#
Engine

Ko
Gu
Pr
Fi
Gi
Te
Jo
Ar
Ga
Ch
Ex
Fr
P11
SB
1
Komodo 9.1
_
x
½
½
1
½
1
1
1
1
1
½
1
9
44½
2
Gull 3
_
½
x
½
½
1
½
1
½
1
1
1
1

40½
3
Protector 1.9
_
½
½
x
0
1
½
1
½
0
1
1
1
7
33¾
4
Fire 5b
_
0
½
1
x
½
1
½
½
0
1
1
1
7
33
5
Ginkgo 1.2
_
½
0
0
½
x
½
1
½
1
1
1
1
7
30
6
Texel 1.06a19
_
0
½
½
0
½
x
½
1
½
1
1
½
6
27½
7
Jonny 7

0
0
0
½
0
½
x
1
1
½
1
1

20¾
8
Arasan 18

0
½
½
½
½
0
0
x
½
½
1
1
5
22
9
Gaviota 1

0
0
1
1
0
½
0
½
x
0
0
1
4
20½
10
Cheng4 0.39

0
0
0
0
0
0
½
½
1
x
1
½

12¼
11
Exchess 7.71b

½
0
0
0
0
0
0
0
1
0
x
1


12
Fruit 200815

0
0
0
0
0
½
0
0
0
½
0
x
1


Stage 1b

#
Engine

St
Ho
Ha
Nr
Eq
Ch
Ju
Th
Ni
Sc
Cr
Pe
P11
SB
1
Stockfish 300815
_
x
1
1
1
1
1
1
1
1
1
1
1
11
55
2
Houdini 4
_
0
x
1
1
1
½
1
1
½
1
1
1
9
41¼
3
Hannibal 300815
_
0
0
x
½
½
½
1
1
1
1
1
1

28¾
4
Nirvana 81715
_
0
0
½
x
1
½
1
½
1
½
1
1
7
28½
5
Equinox 3.30
_
0
0
½
0
x
1
½
1
1
1
1
½

26¼
6
Chiron 2
_
0
½
½
½
0
x
1
½
½
½
1
1
6
25¼
7
Junior 13.8
_
0
0
0
0
½
0
x
½
½
1
1
1

14
8
The Baron 3.40a
_
0
0
0
½
0
½
½
x
0
1
½
1
4
14¼
9
Nightmare 7.98

0
½
0
0
0
½
½
1
x
0
0
1

14¼
10
Scorpio 2.77

0
0
0
½
0
½
0
0
1
x
½
1

12
11
Crafty 24.1

0
0
0
0
0
0
0
½
1
½
x
1
3

12
Pedone 1.3

0
0
0
0
½
0
0
0
0
0
0
x
½


Due to the severe problems with crashes, three engines will not be allowed in further stages. Junior, Pedone, and Equinox will not move on even if top 6, as the frequent crashes create both extra work for Martin Thoresen and discontent in the audience [3] .

Stage 2

September 12, 2015 - October 08, 2015. Double round-robin, using a two-move book designed by Adam Hair and checked by Nelson Hernandez for statistical and evaluative play-balance. The top 6 will qualify for Stage 3.
#
Engine

Ko
St
Ho
Gu
Pr
Ha
Gi
Te
Ni
Fi
Ch
Th
P22
SB
1
Komodo 9.2
_

½½
11
½½
11
½1
11
½1
11
½1
11
11
18½
182¾
2
Stockfish 070915
_
½½

½1
½½

½1
11
11
½½


11
16½
163¾
3
Houdini 4
_
00
½0

½½
½0
11
01
10
½1
11
11
11
13½
120¼
4
Gull 3
_
½½
½½
½½

½0
½½
½½
½1
½1
½1
½½
11
13
129½
5
Protector R1076
_
00

½1
½1

½½
½½
½½
½½
½½
½½
11
11½
109
6
Hannibal 080915
_
½0
½0
00
½½
½½

½½
½½
½1
½½
½1

10½
100¼
7
Ginkgo 1.3

00
00
10
½½
½½
½½

½1
10
½½
½½
½1
10
93
8
Texel 1.06a19

½0
00
01
½0
½½
½½
½0


½½
11
11
10
90
9
Nirvana 91015

00
½½
½0
½0
½½
½0
01


½0
½½
11

88
10
Fire 5b

½0

00
½0
½½
½½
½½
½½
½1

½0
½1
9
87¼
11
Chiron 2

00

00
½½
½½
½0
½½
00
½½
½1

½1
8
74
12
The Baron 3.40a

00
00
00
00
00

½0
00
00
½0
½0

2
18¾

Stage 3

October 08, 2015 - October 28, 2015. The format for Stage 3 is a hexa round robin (x 6) so that each engine will play both sides of the same opening against each other, three times. After Stage 3 has finished, the top 2 engines will meet in a Superfinal of 100 games.

#
Engine

Komodo
Stockfish
Gull
Houdini
Hannibal
Protector
P30
SB
1
Komodo 1501.01
_
······
½½½½½½
½½½11½
0½½1½1
1½11½½
11½111
20½
275¼
2
Stockfish 070915 [4]
_
½½½½½½
······
0½½½1½
111½1½
1½11½0
0½½1½1
18½
256
3
Gull 3

½½½00½
1½½½0½
······
½1½½½½
1½1½½½
½110½1
16½
228¼
4
Houdini 4

1½½0½0
000½0½
½0½½½½
······
½½½½11
10½0½½
12½
182½
5
Hannibal 071015

0½00½½
0½00½1
0½0½½½
½½½½00
······
1½½½½½
11
164¼
6
Protector R1091

00½000
1½½0½0
½001½0
01½1½½
0½½½½½
······
11
160¾

#
Engine

Ko
St
Gu
Ho
Ha
Pr
P30
SB
1
Komodo 1501.01
_

3
4



20½
275¼
2
Stockfish 070915
_
3

3
5
4

18½
256
3
Gull 3

2
3


4
4
16½
228¼
4
Houdini 4


1


4

12½
182½
5
Hannibal 071015


2
2
2


11
164¼
6
Protector R1091

½

2



11
160¾

Superfinal

The Superfinal between Stockfish 021115 and Komodo 9.3x was played from November 06 until November 30, 2015 with 50 different 8 move openings selected by IM Erik Kislik, of which 33 are his own and the remaining 17 are made by Cato. Each engine played both the black and white side of the same position. Komodo dominated the match and secured the title five games before the end of the hundred games marathon [5] .

Games
Opening
Results




Points


ECO
Name
Ko-St
St-Ko

Ko

St
Ko

St
1
2
D45
Semi-Slav: 6.Qc2 Bd6 7.g4 Nxg4
1-0
½-½


-
½

-
½
3
4
D41
QGD: Semi-Tarrasch, Keres Counterattack
½-½
½-½

1
-
1

-

5
6
C48
Four Knights: Spanish, Classical Defence, 5.Nxe5
½-½
½-½

1
-
1

-

7
8
A46
Torre Attack: 3...c5 4.c3 h6
½-½
½-½

1
-
1

-

9
10
D79
Neo-Grünfeld, 6.O-O c6 7.cxd5 cxd5 8.Nc3 Nc6 9.Ne5
½-½
½-½

1
-
1

-

11
12
B80
Sicilian: Scheveningen, English, 7...b5 8.Qd2 Nbd7
½-½
½-½

1
-
1

-

13
14
B47
Sicilian: Taimanov, 6.g3 a6 7.Bg2 d6 8.O-O Bd7
1-0
½-½


-
½
8
-
6
15
16
A29
English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Be6
½-½
½-½

1
-
1
9
-
7
17
18
C50
Giuoco Pianissimo: 4.d3 Nf6 5.O-O
½-½
½-½

1
-
1
10
-
8
19
20
B09
Pirc: Austrian, 5...O-O 6.Bd3 Nc6 7.e5
½-½
½-½

1
-
1
11
-
9
21
22
E15
Queen's Indian: Nimzowitsch, 5.Nbd2 c5
½-½
½-½

1
-
1
12
-
10
23
24
E11
Bogo-Indian: Grünfeld Variation
½-½
½-½

1
-
1
13
-
11
25
26
B31
Sicilian: Rossolimo, 3...g6 4.Bxc6
½-½
½-½

1
-
1
14
-
12
27
28
B31
Sicilian: Taimanov, 6.Be3 a6 7.Qd2 Nf6 8.f3
½-½
½-½

1
-
1
15
-
13
29
30
A36
English: Symmetrical, 5.e3 e5 (Botvinnik Reversed)
½-½
½-½

1
-
1
16
-
14
31
32
A57
Benko Gambit: 4.cxb5 a6 5.e3
½-½
½-½

1
-
1
17
-
15
33
34
C02
French: Advance, 5.Nf3 Qb6 6.a3 Bd7
½-½
½-½

1
-
1
18
-
16
35
36
A21
English: Lukin, 5.Ng5 Nf6
½-½
1-0

½
-

18½
-
17½
37
38
D97
Grünfeld: Russian, Alekhine, 8.Be2 b5 9.Qb3
½-½
0-1


-
½
20
-
18
39
40
A48
Neo-King's Indian: London System
½-½
½-½

1
-
1
21
-
19
41
42
C05
French: Tarrasch, Closed, 7.Ngf3
½-½
½-½

1
-
1
22
-
20
43
44
E36
Nimzo-Indian: Classical, Noa, 5.a3 Bxc3+ 6.Qxc3 dxc4
½-½
½-½

1
-
1
23
-
21
45
46
E18
Queen's Indian: 7.Nc3 Ne4 8.Bd2 Bf6
½-½
0-1


-
½
24½
-
21½
47
48
A19
English: Mikenas, 6.d4 cxd4 7.Nxd4 Nxe5
½-½
½-½

1
-
1
25½
-
22½
49
50
A11
English: Caro-Kann Defence
½-½
½-½

1
-
1
26½
-
23½
51
52
B33
Sicilian: Pelikan, 7.Nd5
½-½
½-½

1
-
1
27½
-
24½
53
54
B42
Sicilian: Kan, Polugaevsky, 6.Nb3 Ba7
½-½
½-½

1
-
1
28½
-
25½
55
56
A87
Dutch: Leningrad, Main Line, 7.Nc3 Qe8 8.d5 Na6
½-½
½-½

1
-
1
29½
-
26½
57
58
E90
King's Indian: 5.Nf3 O-O 6.h3 e5 7.d5
½-½
½-½

1
-
1
30½
-
27½
59
60
A20
English: King's, 2.g3 Nf6 3.Bg2 c6
½-½
½-½

1
-
1
31½
-
28½
61
62
A08
Reti: KIA, French Variation
½-½
½-½

1
-
1
32½
-
29½
63
64
A08
Dutch: 2.c4 Nf6 3.g3 e6 5.Nf3 d5 6.O-O Bd6
½-½
½-½

1
-
1
33½
-
30½
65
66
C67
Spanish: Open Berlin, 5.d4 Nd6 Queenswap, 9.Nc3
½-½
½-½

1
-
1
34½
-
31½
67
68
D38
QGD: Ragozin, 5.cxd5 exd5 6.Bg5 h6
½-½
½-½

1
-
1
35½
-
32½
69
70
A43
Old Benoni: Franco-Benoni
½-½
½-½

1
-
1
36½
-
33½
71
72
A43
Queen's Indian: 4.e3 Bb7 5.Bd3 c5 6.O-O
½-½
0-1


-
½
38
-
34
73
74
A27
English: Three Knights, 3...g6 4.d4 exd4 5.Nxd4
½-½
½-½

1
-
1
39
-
35
75
76
D63
QGD: Orthodox, Swiss, Karlsbad, 9.Bd3 c6
½-½
½-½

1
-
1
40
-
36
77
78
E45
Nimzo-Indian: Nimzowitsch, 5.Ne2 Ba6 6.a3 Bxc3+
½-½
0-1


-
½
41½
-
36½
79
80
D93
Grünfeld: 5.Bf4 O-O 6.e3 c5 7.dxc5 Qa5 8.Rc1
½-½
½-½

1
-
1
42½
-
37½
81
82
D45
Semi-Slav: 6.Qc2 Bd6 7.b3 O-O 8.Be2
½-½
½-½

1
-
1
43½
-
38½
83
84
A57
Benko Gambit: 4.Nf3 g6 5.cxb5 a6
1-0
½-½


-
½
45
-
39
85
86
A49
Neo-King's Indian: Double Fianchetto System
½-½
0-1


-
½
46½
-
39½
87
88
A49
Old Indian: 5.e4 Be7 6.g3 c6 7.Bg2 O-O 8.O-O a6
½-½
1-0

½
-

47
-
41
89
90
D07
QGD: Chigorin, 3.Nf3 Bg4 4.Nc3
½-½
½-½

1
-
1
48
-
42
91
92
E53
Nimzo-Indian: Main Line, 7...Nbd7
½-½
½-½

1
-
1
49
-
43
93
94
C45
Scotch: 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7
½-½
½-½

1
-
1
50
-
44
95
96
A32
English: Symmetrical, Two Knights, 5.g3 Qc7
½-½
½-½

1
-
1
51
-
45
97
98
E83
King's Indian: Sämisch, Panno, 8.Nc1
1-0
½-½


-
½
52½
-
45½
99
100
E83
King's Indian: Fianchetto, Yugoslav, 7.O-O Nbd7
½-½
½-½

1
-
1
53½
-
46½

Selected Games

Stage 1b

Houdini 4 - Stockfish 300815 » Lomonosov Tablebases, Rook Endgame [6] [7]
[Event "TCEC Season 8 - Stage 1b"]
[Site "http://tcec.chessdom.com"]
[Date "2015.09.06"]
[Round "8"]
[White "Houdini 4"]
[Black "Stockfish 300815"]
[Result "0-1"]
 
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 d5 5.cxd5 exd5 6.Ne5 Bb7 7.Bb5+ c6 8.Bd3 Bd6
9.O-O O-O 10.b3 c5 11.Bb2 Na6 12.Nd2 Qe7 13.Re1 Nb4 14.Bb1 Rae8 15.a3 Na6
16.f4 Nc7 17.dxc5 bxc5 18.Bc2 g6 19.Ndf3 Rb8 20.Bd3 Ne6 21.Qc2 Ba8 22.Rab1 Rb6
23.Ba1 Rd8 24.a4 Ne4 25.Ng4 h5 26.Qb2 d4 27.exd4 cxd4 28.Nh6+ Kh7 29.Bxe4 Bxe4
30.Rxe4 Kxh6 31.f5 gxf5 32.Qd2+ Kh7 33.Rh4 Kg8 34.Rxh5 Bf4 35.Qe1 Qf6 36.Kh1
Ng7 37.Rh4 Re6 38.Qd1 Be3 39.Qd3 Qe7 40.Rd1 Re4 41.Rh3 Ne6 42.Rf1 Nf4 43.Rg3+
Ng6 44.Bb2 Qe6 45.Bc1 Bxc1 46.Rxc1 Re3 47.Qc4 Qxc4 48.bxc4 Rc3 49.Rd1 Rxc4
50.h4 Kf8 51.h5 Nf4 52.Rg5 Rd5 53.Nh4 d3 54.Rxf5 Rd6 55.Kh2 Ne2 56.Nf3 Rxa4
57.Rd2 Kg7 58.g3 Nd4 59.Nxd4 Raxd4 60.Kg2 R6d5 61.h6+ Kg6 62.h7 Rd8 63.Rf3 Kg7
64.h8=B+ Rxh8 65.Rfxd3 Rxd3 66.Rxd3 a5 67.Ra3 Rh5 68.Kf3 Rb5 69.Ra4 Kh6 70.Rh4+
Kg5 71.Rg4+ Kf6 72.Ra4 Kg7 73.Rg4+ Kf8 74.Ra4 Ke7 75.Ke2 Ke6 76.Kd3 f6 77.Re4+
Kd6 78.Ra4 Ke5 79.g4 Ke6 80.Rc4 Kf7 81.Rc7+ Kg6 82.Ra7 Rb3+ 83.Kc2 Ra3 84.Kb2
Ra4 85.Kc3 Kg5 86.Rg7+ Kh4 87.Rg6 Rf4 88.Kb3 a4+ 89.Kb2 Rf3 90.Rg7 Rf2+ 91.Ka3
Rf4 92.Rg6 Kg3 93.Kb2 Kf3 94.Ka3 Ke4 95.Rg8 Ke5 96.Rg6 Kd5 97.Rh6 Ke4 98.Rg6
Ke5 99.Rg7 Ke6 100.Ka2 Rf3 101.Rb7 0-1

Superfinal

Stockfish 021115 - Komodo 9.3x, Round 22, 64.Kg4 [8] [9] [10] [11]
[Event "TCEC Season 8 - Superfinal"]
[Site "http://tcec.chessdom.com"]
[Date "2015.11.11"]
[Round "22"]
[White "Stockfish 021115"]
[Black "Komodo 9.3x"]
[Result "1/2-1/2"]
 
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Nbd2 c5 6.e4 cxd4 7.e5 Ng4 8.h3 Nh6
9.Bg2 Nc6 10.O-O Be7 11.Qa4 Bb7 12.Nxd4 Nxd4 13.Bxb7 Rb8 14.Be4 Qc7 15.Qd1
Nhf5 16.Re1 Qxe5 17.Nb3 Rd8 18.Bf4 Qf6 19.Qd3 Bc5 20.Rad1 Nxb3 21.axb3 Nd4
22.Kg2 Nc6 23.h4 a5 24.Qe2 Qe7 25.Qh5 g6 26.Qf3 Nd4 27.Qc3 Qf6 28.Bd5 Bb4
29.Qd3 O-O 30.Be5 Qf5 31.Qxd4 Bxe1 32.Rxe1 d6 33.Bf6 e5 34.Qxb6 Qxf6
35.Qxa5 Kh8 36.b4 g5 37.Rh1 gxh4 38.Rxh4 Qg6 39.Qa3 f5 40.Qf3 Qg7 41.b5 Rb8
42.b4 Rf6 43.Rh5 Qg6 44.Qe2 f4 45.Be4 Qg7 46.Qf3 Rh6 47.Rxh6 Qxh6 48.Qe2
fxg3 49.fxg3 Qg5 50.c5 Rg8 51.Qe1 dxc5 52.bxc5 Rd8 53.b6 Rd2+ 54.Kg1 Qd8
55.Qe3 Rb2 56.Bf3 Rb1+ 57.Kg2 Rb2+ 58.Kh3 Qf6 59.b7 Qe6+ 60.g4 h5 61.c6
hxg4+ 62.Bxg4 Qd6 63.Bf5 Qf6 64.Kg4 Rg2+ 65.Kf3 Rb2 66.Kg4 Rg2+ 67.Kf3 Rb2
68.Qe4 Qd6 1/2-1/2

Forum Posts


External Links


References

  1. ^ TCEC - Thoresen Chess Engines Competition, Fotos | Facebook, Poster by Santiago Méndez
  2. ^ Alfil leaves TCEC Stage 1b due to “Own book” | Chessdom
  3. ^ TCEC - Thoresen Chess Engines Competition | Facebook, September 09, 2015
  4. ^ Game 1 to 15 Stockfish 071015, then reverted to former version, see Press release regarding the Stockfish case in TCEC Stage 3, October 11, 2015
  5. ^ Komodo is triple champion, wins the Top Chess Engine Championship 2015!, Chessdom, November 29, 2015
  6. ^ TCEC - Top Chess Engine Championship - Archive Mode | Houdini 4 - Stockfish 300815
  7. ^ 7 men Rook endgames H4 vs SF in recent TCEC stage 1b by Nay Lin Tun, CCC, September 07, 2015
  8. ^ TCEC - Top Chess Engine Championship - Archive Mode | TCEC Season 8 - Superfinal, Stockfish 021115 - Komodo 9.3x, Round 22
  9. ^ From +26.13 to 0.00 in two moves by juha.n..., FishCooking, November 11, 2015
  10. ^ Re: Komodo strikes first at the TCEC Superfinal by Neel Basant, CCC, November 11, 2015
  11. ^ A position that needs a physician by Dann Corbit, CCC, November 14, 2015
  12. ^ Press release regarding the Stockfish case in TCEC Stage 3, October 11, 2015
  13. ^ Binary for TCEC superfinal by Kiran Panditrao, FishCooking, October 30, 2015
  14. ^ Martin on the SF loss on time by Rob Nicholas, CCC, October 09, 2015
  15. ^ Is the current Komodo that close to perfection? by Bajusz Tamás, CCC, November 28, 2015

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