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		TCEC Season 6, a private tournament directed and organized by Martin Thoresen and supported by the Chessdom Arena, started on February 07, 2014 with a newly designed web based GUI interfacing with pgn4web and cutechess-cli [1] . SMP capable engines with a minimum of supporting 8 cores were choosen to participate. Openings are from recent human high rated tournaments with a length of 8 moves selected by Nelson Hernandez alias Cato the Younger. Time control is 120 minutes for the whole game plus 30 seconds increment per move.
TCEC Season 6 Logo [2]

Participants

	Engine	CC	Authors	Stages
1	Alfil	ES	Enrique Sánchez Acosta	1c
2	Arasan	US	Jon Dart	1b
3	Arminius	DE	Volker Annuss	1a
4	Cheng	CZ	Martin Sedlak	1a
5	Chiron	IT	Ubaldo Andrea Farina	1c	2
6	Crafty	US	Robert Hyatt et al.	1c
7	Critter	SK	Richard Vida	1a	2	3	4
8	Delphil	FR	Philippe Fabiani	1a
9	Equinox	IT	Giancarlo Delli Colli et al.	1a	2
10	Exchess	US	Daniel Homan	1b
11	Fire	US/RS	Norman Schmidt, Milos Stanisavljevic [3]	1b	2	3
12	Gaviota	AR	Miguel A. Ballicora	1a
13	Gull	RU	Vadim Demichev	1a	2	3
14	Hannibal	US/PH	Sam Hamilton, Edsel Apostol	1a	2
15	Houdini	BE	Robert Houdart	1a	2	3	4
16	Jazz	NL	Evert Glebbeek	1b
17	Jonny	DE	Johannes Zwanzger	1c
18	Junior	IL	Amir Ban, Shay Bushinsky	1c	2
19	Komodo	US	Don Dailey, Larry Kaufman, Mark Lefler	1c	2	3	4	Superfinal
20	Naum	CA	Alexander Naumov	1b	2
21	Nebula	RS	Dragan Zdravkovic	1b
22	Nightmare	NL	Joost Buijs	1b
23	Octochess	DE	Tim Kosse	1c
24	Onno	DE	Onno Garms	1a
25	Protector	DE	Raimund Heid	1c	2
26	RedQueen	BR	Ben-Hur Carlos Vieira Langoni Junior	1a
27	Rybka	PL	Vasik Rajlich, Larry Kaufman et al.	1c	2	3
28	Scorpio	ET	Daniel Shawul	1c
29	Shredder	DE	Stefan Meyer-Kahlen	1b	2	3
30	Spark	NL	Allard Siemelink	1c
31	Spike	DE	Ralf Schäfer, Volker Böhm	1b	2
32	Stockfish	NO/IT/FI	Tord Romstad, Marco Costalba, Joona Kiiski et al.	1b	2	3	4	Superfinal	Winner
33	Texel	SE	Peter Österlund	1a	2
34	The Baron	NL	Richard Pijl	1c
35	Toga II	FR/DE	Fabien Letouzey, Thomas Gaksch et al.	1b
36	Tornado	DE	Engin Üstün	1b

• CC Country Codes

Stage 1

Stage 1 consists of 3 groups of 12 engines (1a, 1b and 1c), where each group is a single round robin meaning that all the participants play each other once. 66 games will be played in total for each group (198 for all groups) where the top five from each group and the best 6th placed will qualify for Stage 2 (16 in total) ^[4] .

Stage 1a
#	Engine		Ho	Cr	Gu	Te	Eq	Ha	Ch	On	Ga	Ar	Re	De	P	SB
1	Houdini 4	_	x	1	½	½	½	1	1	1	½	1	1	1	9	44¼
2	Critter 1.6a	_	0	x	1	½	1	1	½	1	½	1	1	1	8½	40¼
3	Gull 2.8b	_	½	0	x	½	½	1	½	1	1	1	1	1	8	35
4	Texel 1.03	_	½	½	½	x	0	½	½	1	½	1	1	1	7	31
5	Equinox 2.04 [5]	_	½	0	½	1	x	0	0	1	1	1	1	1	7	29
6	Hannibal 1.4b	_	0	0	0	½	1	x	1	½	1	1	1	1	7	27¾
7	Cheng4 0.36c		0	½	½	½	1	0	x	0	1	1	½	1	6	26¾
8	Onno 1.27		0	0	0	0	0	½	1	x	½	1	½	1	4½	15¾
9	Gaviota 0.99b		½	½	0	½	0	0	0	½	x	0	1	½	3½	17
10	Arminius 180114		0	0	0	0	0	0	0	0	1	x	1	½	2½	6
11	Redqueen 1.197		0	0	0	0	0	0	½	½	0	0	x	1	2	6¼
12	Delphil 3.2		0	0	0	0	0	0	0	0	½	½	0	x	1	3
Stage 1b
#	Engine		Na	St	Fi	Sh	Sp	To	Ni	Tg	Ex	Ar	Ne	Ja	P	SB
1	Naum 4.6	_	x	½	½	1	½	1	1	1	½	1	1	1	9	43¼
2	Stockfish 180214	_	½	x	1	½	½	½	1	1	1	1	1	1	9	43
3	Fire 3.1	_	½	0	x	½	1	½	½	1	1	1	1	1	8	35¼
4	Shredder 12	_	0	½	½	x	½	1	½	1	0	1	1	½	6½	31¼
5	Spike 1.4	_	½	½	0	½	x	½	1	½	½	1	½	1	6½	30¾
6	Tornado 5		0	½	½	0	½	x	½	1	½	1	½	1	6	26½
7	Nightmare 7.8		0	0	½	½	0	½	x	1	1	½	1	1	6	23¾
8	Toga II 010214		0	0	0	0	½	0	0	x	1	1	1	1	4½	13¾
9	Exchess 7.18b		½	0	0	1	½	½	0	0	x	0	½	1	4	19½
10	Arasan 16.3		0	0	0	0	0	0	½	0	1	x	1	½	3	10
11	Nebula 2		0	0	0	0	½	½	0	0	½	0	x	1	2½	9¼
12	Jazz 799		0	0	0	½	0	0	0	0	0	½	0	x	1	4¾
Stage 1c
#	Engine		Ko	Pr	Ry	Ju	Ch	Sc	Jo	Sp	Th	Oc	Cr	Al	P	SB
1	Komodo 1188	_	x	½	1	½	1	½	1	1	1	1	1	1	9½	46
2	Protector 1.6b12	_	½	x	0	1	½	1	1	1	1	1	½	1	8½	40¾
3	Rybka 4.1	_	0	1	x	½	0	1	½	½	1	1	1	1	7½	33¾
4	Junior 13.3	_	½	0	½	x	1	½	1	0	½	1	1	1	7	32½
5	Chiron 2	_	0	½	1	0	x	1	½	1	½	1	0	1	6½	31¾
6	Scorpio 2.77		½	0	0	½	0	x	0	1	½	1	1	1	5½	22½
7	Jonny 6		0	0	½	0	½	1	x	0	½	1	1	1	5½	21¾
8	Spark 1		0	0	½	1	0	0	1	x	½	½	1	½	5	23
9	The Baron 3.36		0	0	0	½	½	½	½	½	x	0	½	½	3½	17
10	Octochess 5374		0	0	0	0	0	0	0	½	1	x	1	½	3	9½
11	Crafty 23.8		0	½	0	0	1	0	0	0	½	0	x	½	2½	13½
12	Alfil 14.1		0	0	0	0	0	0	0	½	½	½	½	x	2	7

• SB: Sonneborn-Berger score

Stage 2

#	Engine		St	Ko	Ry	Fi	Ho	Cr	Gu	Sh	Ch	Ha	Te	Eq	Na	Ju	Sp	Pr	P	SB
1	Stockfish 060314	_	x	½	1	½	0	1	½	1	1	½	1	1	1	½	1	1	11½	79
2	Komodo 1188	_	½	x	½	½	1	1	½	1	½	½	½	½	1	1	1	1	11	76½
3	Rybka 4.1	_	0	½	x	½	½	½	½	½	1	1	1	1	1	1	1	1	11	71
4	Fire 3.1	_	½	½	½	x	½	½	½	1	1	1	1	½	½	1	½	1	10½	72¾
5	Houdini 4	_	1	0	½	½	x	½	½	½	½	1	1	½	1	½	½	1	9½	67
6	Critter 1.6a	_	0	0	½	½	½	x	½	½	½	½	½	½	1	½	1	1	8	52
7	Gull A206	_	½	½	½	½	½	½	x	0	½	½	½	0	½	½	1	½	7	52½
8	Shredder 12	_	0	0	½	0	½	½	1	x	½	½	0	1	½	1	½	½	7	45½
9	Chiron 2		0	½	0	0	½	½	½	½	x	1	½	½	1	½	½	0	6½	44
10	Hannibal 1.4b		½	½	0	0	0	½	½	½	0	x	½	1	½	½	½	1	6½	43
11	Texel 1.04a16		0	½	0	0	0	½	½	1	½	½	x	½	0	1	½	1	6½	41
12	Equinox 2.04		0	½	0	½	½	½	1	0	½	0	½	x	½	½	½	0	5½	40½
13	Naum 4.6		0	0	0	½	0	0	½	½	0	½	1	½	x	½	1	½	5½	34
14	Junior 13.3		½	0	0	0	½	½	½	0	½	½	0	½	½	x	½	½	5	34½
15	Spike 1.4		0	0	0	½	½	0	0	½	½	½	½	½	0	½	x	½	4½	30¾
16	Protector 1.6b14		0	0	0	0	0	0	½	½	1	0	0	1	½	½	½	x	4½	26½

• SB: Sonneborn-Berger score

Stage 3

April 10, 2014 - April 30, 2014. Quadruple round robin, 112 games, 28 each. Top 4 qualify for Stage 4.

#	Engine		St		Ho		Ko		Cr		Fi		Gu		Ry		Sh		P		SB
1	Stockfish 080414	_			1110		01½1		½011		½½½1		½11½		1111		1111		21½		263¾
2	Houdini 4	_	0001				½½½½		½111		1101		1101		½½½1		111½		18½		222¼
3	Komodo 1217	_	10½0		½½½½				½1½½		1½10		½½1½		½111		1111		18½		219½
4	Critter 1.6a	_	½100		½000		½0½½				1½½½		½½1½		½½½½		½½½1		13		165¼
5	Fire 3.1		½½½0		0010		0½01		0½½½				01½½		½½1½		½½11		13		162¼
6	Gull A228		½00½		0010		½½0½		½½0½		10½½				½½11		½1½1		13		156¾
7	Rybka 4.1		0000		½½½0		½000		½½½½		½½0½		½½00				1111		10½		111½
8	Shredder 12		0000		000½		0000		½½½0		½½00		½0½0		0000				4		54¾

#	Engine		St		Ho		Ko		Cr		Fi		Gu		Ry		Sh		P		SB
1	Stockfish 080414	_			3		2½		2½		2½		3		4		4		21½		263¾
2	Houdini 4	_	1				2		3½		3		3		2½		3½		18½		222¼
3	Komodo 1217	_	1½		2				2½		2½		2½		3½		4		18½		219½
4	Critter 1.6a	_	1½		½		1½				2½		2½		2		2½		13		165¼
5	Fire 3.1		1½		1		1½		1½				2		2½		3		13		162¼
6	Gull A228		1		1		1½		1½		2				3		3		13		156¾
7	Rybka 4.1		0		1½		½		2		1½		1				4		10½		111½
8	Shredder 12		0		½		0		1½		1		1		0				4		54¾

• SB: Sonneborn-Berger score

Stage 4

May 01, 2014. Hexadeca round robin, 96 (16x6) games. Top 2 qualify for the Superfinal.

#	Engine		Stockfish		Komodo		Houdini		Critter		P		SB
1	Stockfish 300414	_			0½½½½1½½½½½½01½½		1½½½1½0½10½½½½1½		1½11½1½11½1½½111		30		622
2	Komodo 1223	_	1½½½½0½½½½½½10½½				½½01½½½½1½½½½1½1		½1½1½½11½1½0½½½1		28		615
3	Houdini 4		0½½½0½1½01½½½½0½		½½10½½½½0½½½½0½0				1½1½1½1½1010½½½1		24		539
4	Critter 1.6a		0½00½0½00½0½½000		½0½0½½00½0½1½½½0		0½0½0½0½0101½½½0				14		376

#	Engine		St		Ko		Ho		Cr		P		SB
1	Stockfish 300414	_			8		9		13		30		622
2	Komodo 1223	_	8				9½		10½		28		615
3	Houdini 4		7		6½				10½		24		539
4	Critter 1.6a		3		5½		5½				14		376

• SB: Sonneborn-Berger score

Superfinal

The superfinal between Stage 4 top two engines Stockfish and Komodo was played 24/7 from May 19 until May 30, 2014. Both engines were updated with improved versions, the upcoming Stockfish 5, officially Stockfish 170514, and Komodo 7x, just released at the start of the superfinal ^[6], and like Stockfish before, now supporting Syzygy Bases. After playing 64 games with 32 (+1?) 8-move openings played with reversed colors, Stockfish won conveniently with +13=45-6 and 35½-28½.

Stockfish 170514 vs Komodo 7x 35½-28½

Games		Opening		Results						Points
		ECO	Name	St-Ko	Ko-St		St		Ko	St		Ko
1	2	C18	French: Winawer, Poisoned Pawn	1-0	½-½		1½	-	½	1½	-	½
3	4	D16	Slav: Soultanbeieff Variation	½-½	½-½		1	-	1	2½	-	1½
5	6	E32	Nimzo-Indian: Classical	½-½	½-½		1	-	1	3½	-	2½
7	8	D12	Slav: 4.e3 Bf5 5.Nc3 e6 6.Nh4	½-½	0-1		1½	-	½	5	-	3
9	10	A61	Benoni: Uhlmann, 7...Bg7	1-0	½-½		1½	-	½	6½	-	3½
11	12	B01	Scandinavian: 2...Qxd5, 5.Bc4 c6	½-½	½-½		1	-	1	7½	-	4½
13	14	E91	King's Indian: Kazakh Variation, 7.Bg5	½-½	½-½		1	-	1	8½	-	5½
15	16	C28	Vienna: 3.Bc4 Nc6 4.d3 Bc5	½-½	½-½		1	-	1	9½	-	6½
17	18	E80	King's Indian: Sämisch, 5...Nc6	½-½	0-1		1½	-	½	11	-	7
19	20	D10	Slav: Winawer Countergambit, 4.cxd5 cxd5 5.dxe5	½-½	½-½		1	-	1	12	-	8
21	22	B22	Sicilian: Alapin, 2...e6 3.Nf3 d5	½-½	½-½		1	-	1	13	-	9
23	24	D11	Slav: 4.Qc2	½-½	½-½		1	-	1	14	-	10
25	26	D37	QGD: Classical, 5...O-O 6.e3 Nbd7	½-½	½-½		1	-	1	15	-	11
27	28	D45	Semi-Slav: 6.Qc2 Bd6 7.g4 Nxg4	1-0	1-0		1	-	1	16	-	12
29	30	C72	Spanish: Modern Steinitz, 5.O-O Bd7 6.d4	½-½	1-0		½	-	1½	16½	-	13½
31	32	B32	Sicilian: Lowenthal, Kalashnikov, 6.N1c3	1-0	½-½		1½	-	½	18	-	14
33	34	D31	Semi-Slav: Marshall Gambit, 8.Be2	1-0	1-0		1	-	1	19	-	15
35	36	E20	Nimzo-Indian: 4.f3 c5 5.d5	½-½	½-½		1	-	1	20	-	16
37	38	E12	Queen's Indian: Petrosian, 5.Nc3 Ne4	1-0	½-½		1½	-	½	21½	-	16½
39	40	E07	Catalan: Closed, 6...Nbd7 7.Nc3 dxc4	1-0	½-½		1½	-	½	23	-	17
41	42	A57	Benko Gambit: 4.cxb5 a6 5.e3	½-½	½-½		1	-	1	24	-	18
43	44	A40	Queen's Pawn: Modern	½-½	0-1		1½	-	½	25½	-	18½
45	46	B12	Caro-Kann: Advance, Main Line, 6.Nge2 c5	½-½	½-½		1	-	1	26½	-	19½
47	48	E13	Queen's Indian: 5.Bg5 h6 6.Bh4 Bb4 7.Nd2	1-0	½-½		1½	-	½	28	-	20
49	50	C11	French: Steinitz, 6.Nf3	½-½	½-½		1	-	1	29	-	21
51	52	A11	English: Caro-Kann Defence	1-0	1-0		1	-	1	30	-	22
53	54	B29	Sicilian: Nimzowitsch, Rubinstein Countergambit	1-0	1-0		1	-	1	31	-	23
55	56	E76	King's Indian: Four Pawns Attack, 6.Nf3 c5	½-½	½-½		1	-	1	32	-	24
57	58	D15	Slav: Chameleon, 5.Bg5	½-½	½-½		1	-	1	33	-	25
59	60	C05/E75	French: Tarrasch, Closed; King's Indian: Averbakh	½-½	½-½		1	-	1	34	-	26
61	62	A34	English: Symmetrical, 3 Knights, 5.e4 Nb4 6.Bc4	½-½	½-½		1	-	1	35	-	27
63	64	C35	KGA: Cunningham Defence	½-½	1-0		½	-	1½	35½	-	28½

• Encyclopaedia of Chess Openings (ECO)
• List of chess openings - Wikipedia

The TCEC Server

^[7]

• CPUs: 2 x 8 core Intel Xeon E5-2689 @ 3300 MHz
• RAM: 64 GB Kingston KVR16R11D4K4/32 Reg/ECC
• SSDs: 2 x Samsung 840 Pro 128 GB @ Raid 0

Forum Posts

• Dear all TCEC fans: New website up. Season 6 -> 7th of February by Martin Thoresen, CCC, February 05, 2014
• Hiarcs withdraws from TCEC Season 6 by Martin Thoresen, CCC, February 06, 2014 » Hiarcs
• Re: Hiarcs withdraws from TCEC by Harvey Williamson, Hiarcs Forum, February 06, 2014
• TCEC Season 6 - Stage 1a now live by Martin Thoresen, CCC, February 07, 2014
• TCEC via Chess PGN Master by Ted Summers, CCC, February 08, 2014
• TCEC Season 6 - Stage 1b now live by Martin Thoresen, CCC, February 19, 2014
• TCEC Season 6 - Stage 1c now live by Martin Thoresen, CCC, March 04, 2014
• TCEC Season 6 - Stage 2 now live by Martin Thoresen, CCC, March 16, 2014
• TCEC Season 6 - Stage 3 now live by Martin Thoresen, CCC, April 10, 2014
• TCEC Season 6 - Stage 4 now live by Martin Thoresen, CCC, May 01, 2014
• TCEC Season 6 - Superfinal now live by Martin Thoresen, CCC, May 19, 2014
• The Superfinal by Lyudmil Tsvetkov, CCC, May 21, 2014

External Links

TCEC

• TCEC - Live Computer Chess Broadcast
  TCEC - Archive Mode
• TCEC Season 6 from OpenChess Forum

Chessdom

• TCEC new season starting! | Chessdom, February 6, 2014
• TCEC Stage 1a starts with 3 shockers | Chessdom, February 8, 2014
• Houdini and Critter in battle for 1st position a round before the end of TCEC Stage 1a | Chessdom, February 18, 2014
• Naum wins TCEC Stage 1b with a drama | Chessdom, March 03, 2014
• Interview with Enrique Sánchez Acosta, author of Alfil | Chessdom, March 05, 2014 » Enrique Sánchez Acosta, Alfil

Misc

• The Doors - Break On Through (To the Other Side), 1967, YouTube Video
  

References

1. ^ TCEC - Live Computer Chess Broadcast
2. ^ TCEC - Thoresen Chess Engines Competition - Fotos | Facebook
3. ^ derived from IvanHoe and the Ippolit series of programs
4. ^ TCEC Stage 1a starts with 3 shockers | Chessdom, February 8, 2014
5. ^ Equinox lost the tiebreak against Hannibal because it crashed at least once during the stage. It can still qualify if none of the other two best 6th placed engines (in Stage 1b and Stage 1c) can score at least 7 points, see TCEC - Live - Help-Menu - Rules & information - Tiebreaks
6. ^ Komodo 7 by Larry Kaufman, CCC, May 19, 2014
7. ^ TCEC - Live - Help-Menu - Rules & information - The TCEC Server

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