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TCEC Season 8

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'''TCEC Season 8''',<br/>
a private tournament directed and organized by [[Anton Mihailov]], CEO of [[Chessdom|Chessdom Arena]] <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=6&t=55915&hilit=Mihailov&start=17 Re: What Happened to TCEC Season 8? Where is Martin?] by [[Mark Lefler]], [[CCC]], April 08, 2015</ref>, started on August 21, [[Timeline#2015|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 [[Opening Book|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.  {| class="wikitable" style="margin: auto;"! [[#Superfinal|Superfinal]] :| [[Komodo|Komodo 9.3x]]| - won the [[#Superfinal| Superfinal]] versus [[Stockfish|Stockfish 021115]]! with '''53½-46½ |}'''.
=Participants=
|}
* [http://chessprogramming.wikispaces.com/space/statscodes CC Country Codes]
=Stages=<span id="Stage1"></span>==Stage 1== '''[[TCEC Season 7#Stage1|< Prev]] [[TCEC Season 9#Stage1|Next >]]'''<br/>Season 8, Stage 1, August 21, 2015 - September 10, 2015 The top 6 from each of Stage 1A/1B will qualify for Stage 2.===Stage 1a===
{| class="wikitable"
|-
! #
! Engine
!
! Ko
! Gu
! P<span style="font-size: 80%; vertical-align: sub;">11</span>
! SB
|-style="background-color:#ccffcc;"
! 1
| style="text-align:left;" | [[Komodo|Komodo 9.1]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | '''x'''
| style="text-align:center;" | ½
! 9
| style="text-align:center;" | 44½
|-style="background-color:#ccffcc;"
! 2
| style="text-align:left;" | [[Gull|Gull 3]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | ½
| style="text-align:center;" | '''x'''
! 8½
| style="text-align:center;" | 40½
|-style="background-color:#ccffcc;"
! 3
| style="text-align:left;" | [[Protector|Protector 1.9]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | ½
| style="text-align:center;" | ½
! 7
| style="text-align:center;" | 33¾
|-style="background-color:#ccffcc;"
! 4
| style="text-align:left;" | [[Fire|Fire 5b]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | 0
| style="text-align:center;" | ½
! 7
| style="text-align:center;" | 33
|-style="background-color:#ccffcc;"
! 5
| style="text-align:left;" | [[Ginkgo|Ginkgo 1.2]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | ½
| style="text-align:center;" | 0
! 7
| style="text-align:center;" | 30
|-style="background-color:#ccffcc;"
! 6
| style="text-align:left;" | [[Texel|Texel 1.06a19]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | 0
| style="text-align:center;" | ½
! 7
| style="text-align:left;" | [[Jonny|Jonny 7]]
| style="text-align:center;" |
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 8
| style="text-align:left;" | [[Arasan|Arasan 18]]
| style="text-align:center;" |
| style="text-align:center;" | 0
| style="text-align:center;" | ½
! 9
| style="text-align:left;" | [[Gaviota|Gaviota 1]]
| style="text-align:center;" |
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 10
| style="text-align:left;" | [[Cheng|Cheng4 0.39]]
| style="text-align:center;" |
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 11
| style="text-align:left;" | [[EXchess|EXchess 7.71b]]
| style="text-align:center;" |
| style="text-align:center;" | ½
| style="text-align:center;" | 0
! 12
| style="text-align:left;" | [[Fruit Reloaded|Fruit 200815]]
| style="text-align:center;" |
| style="text-align:center;" | 0
| style="text-align:center;" | 0
|}
===Stage 1b===
{| class="wikitable"
|-
! #
! Engine
!
! St
! Ho
! P<span style="font-size: 80%; vertical-align: sub;">11</span>
! SB
|-style="background-color:#ccffcc;"
! 1
| style="text-align:left;" | [[Stockfish|Stockfish 300815]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | '''x'''
| style="text-align:center;" | 1
! 11
| style="text-align:center;" | 55
|-style="background-color:#ccffcc;"
! 2
| style="text-align:left;" | [[Houdini|Houdini 4]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | 0
| style="text-align:center;" | '''x'''
! 9
| style="text-align:center;" | 41¼
|-style="background-color:#ccffcc;"
! 3
| style="text-align:left;" | [[Hannibal|Hannibal 300815]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 7½
| style="text-align:center;" | 28¾
|-style="background-color:#ccffcc;"
! 4
| style="text-align:left;" | [[Nirvanachess|Nirvana 81715]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 7
| style="text-align:center;" | 28½
|-style="background-color:#ffcccc;"
! 5
| style="text-align:left;" | [[Equinox|Equinox 3.30]]
| style="text-align:center;" | <span style="background-color: #ff0000;">_</span>
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 6½
| style="text-align:center;" | 26¼
|-style="background-color:#ccffcc;"
! 6
| style="text-align:left;" | [[Chiron|Chiron 2]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | 0
| style="text-align:center;" | ½
! 6
| style="text-align:center;" | 25¼
|-style="background-color:#ffcccc;"
! 7
| style="text-align:left;" | [[Junior|Junior 13.8]]
| style="text-align:center;" | <span style="background-color: #ff0000;">_</span>
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 4½
| style="text-align:center;" | 14
|-style="background-color:#ccffcc;"
! 8
| style="text-align:left;" | [[The Baron|The Baron 3.40a]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 9
| style="text-align:left;" | [[Nightmare NL|Nightmare 7.98]]
| style="text-align:center;" |
| style="text-align:center;" | 0
| style="text-align:center;" | ½
! 10
| style="text-align:left;" | [[Scorpio|Scorpio 2.77]]
| style="text-align:center;" |
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 11
| style="text-align:left;" | [[Crafty|Crafty 24.1]]
| style="text-align:center;" |
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 12
| style="text-align:left;" | [[Pedone|Pedone 1.3]]
| style="text-align:center;" |
| style="text-align:center;" | 0
| style="text-align:center;" | 0
* SB: [https://en.wikipedia.org/wiki/Sonneborn-Berger_score Sonneborn-Berger score]
Due to the severe problems with <span style="background-color: #ff0000ffcccc;">crashes</span>, 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 <ref>[https://www.facebook.com/tcec.chess?fref=nf TCEC - Thoresen Chess Engines Competition | Facebook], September 09, 2015</ref> .<span id="Stage2"></span>==Stage 2= ='''[[TCEC Season 7#Stage2|< Prev]] [[TCEC Season 9#Stage2|Next >]]'''<br/> Season 8, 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.
{| class="wikitable"
|-
! #
! Engine
!
! Ko
! St
! P<span style="font-size: 80%; vertical-align: sub;">22</span>
! SB
|-style="background-color:#ccffcc;"
! 1
| style="text-align:left;" | [[Komodo|Komodo 9.2]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" |
| style="text-align:center;" | ½½
! 18½
| style="text-align:center;" | 182¾
|-style="background-color:#ccffcc;"
! 2
| style="text-align:left;" | [[Stockfish|Stockfish 070915]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | ½½
| style="text-align:center;" |
! 16½
| style="text-align:center;" | 163¾
|-style="background-color:#ccffcc;"
! 3
| style="text-align:left;" | [[Houdini|Houdini 4]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | 00
| style="text-align:center;" | ½0
! 13½
| style="text-align:center;" | 120¼
|-style="background-color:#ccffcc;"
! 4
| style="text-align:left;" | [[Gull|Gull 3]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | ½½
| style="text-align:center;" | ½½
! 13
| style="text-align:center;" | 129½
|-style="background-color:#ccffcc;"
! 5
| style="text-align:left;" | [[Protector|Protector R1076]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | 00
| style="text-align:center;" | 0½
! 11½
| style="text-align:center;" | 109
|-style="background-color:#ccffcc;"
! 6
| style="text-align:left;" | [[Hannibal|Hannibal 080915]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | ½0
| style="text-align:center;" | ½0
! 7
| style="text-align:left;" | [[Ginkgo|Ginkgo 1.3]]
| style="text-align:center;" |
| style="text-align:center;" | 00
| style="text-align:center;" | 00
! 8
| style="text-align:left;" | [[Texel|Texel 1.06a19]]
| style="text-align:center;" |
| style="text-align:center;" | ½0
| style="text-align:center;" | 00
! 9
| style="text-align:left;" | [[Nirvanachess|Nirvana 91015]]
| style="text-align:center;" |
| style="text-align:center;" | 00
| style="text-align:center;" | ½½
! 10
| style="text-align:left;" | [[Fire|Fire 5b]]
| style="text-align:center;" |
| style="text-align:center;" | ½0
| style="text-align:center;" | 0½
! 11
| style="text-align:left;" | [[Chiron|Chiron 2]]
| style="text-align:center;" |
| style="text-align:center;" | 00
| style="text-align:center;" | 0½
! 12
| style="text-align:left;" | [[The Baron|The Baron 3.40a]]
| style="text-align:center;" |
| style="text-align:center;" | 00
| style="text-align:center;" | 00
|}
* SB: [https://en.wikipedia.org/wiki/Sonneborn-Berger_score Sonneborn-Berger score]
<span id="Stage3"></span>==Stage 3= = '''[[TCEC Season 7#Stage3|< Prev]] [[TCEC Season 9#Stage3|Next >]]'''<br/> Season 8, 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.
{| class="wikitable"
! #
! Engine
!
! Komodo
! Stockfish
! P<span style="font-size: 80%; vertical-align: sub;">30</span>
! SB
|-style="background-color:#ccffcc;"
! 1
| style="text-align:left;" | [[Komodo|Komodo 1501.01]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | ······
| style="text-align:center;" | ½½½½½½
! 20½
| style="text-align:center;" | 275¼
|-style="background-color:#ccffcc;"
! 2
| style="text-align:left;" | [[Stockfish|Stockfish 070915]] <ref>Game 1 to 15 Stockfish 071015, then reverted to former version, see [http://www.chessdom.com/press-release-regarding-the-stockfish-case-in-tcec-stage-3/ Press release regarding the Stockfish case in TCEC Stage 3], October 11, 2015</ref>
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | ½½½½½½
| style="text-align:center;" | ······
! 3
| style="text-align:left;" | [[Gull|Gull 3]]
| style="text-align:center;" |
| style="text-align:center;" | ½½½00½
| style="text-align:center;" | 1½½½0½
! 4
| style="text-align:left;" | [[Houdini|Houdini 4]]
| style="text-align:center;" |
| style="text-align:center;" | 1½½0½0
| style="text-align:center;" | 000½0½
! 5
| style="text-align:left;" | [[Hannibal|Hannibal 071015]]
| style="text-align:center;" |
| style="text-align:center;" | 0½00½½
| style="text-align:center;" | 0½00½1
! 6
| style="text-align:left;" | [[Protector|Protector R1091]]
| style="text-align:center;" |
| style="text-align:center;" | 00½000
| style="text-align:center;" | 1½½0½0
! #
! Engine
!
! Ko
! St
! P<span style="font-size: 80%; vertical-align: sub;">30</span>
! SB
|-style="background-color:#ccffcc;"
! 1
| style="text-align:left;" | [[Komodo|Komodo 1501.01]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" |
| style="text-align:center;" | 3
! 20½
| style="text-align:center;" | 275¼
|-style="background-color:#ccffcc;"
! 2
| style="text-align:left;" | [[Stockfish|Stockfish 070915]]
| style="text-align:center;" | <span style="background-color: #00ff00;">_</span>
| style="text-align:center;" | 3
| style="text-align:center;" |
! 3
| style="text-align:left;" | [[Gull|Gull 3]]
| style="text-align:center;" |
| style="text-align:center;" | 2
| style="text-align:center;" | 3
! 4
| style="text-align:left;" | [[Houdini|Houdini 4]]
| style="text-align:center;" |
| style="text-align:center;" | 2½
| style="text-align:center;" | 1
! 5
| style="text-align:left;" | [[Hannibal|Hannibal 071015]]
| style="text-align:center;" |
| style="text-align:center;" | 1½
| style="text-align:center;" | 2
! 6
| style="text-align:left;" | [[Protector|Protector R1091]]
| style="text-align:center;" |
| style="text-align:center;" | ½
| style="text-align:center;" | 2½
=Superfinal=
'''[[TCEC Season 7#Superfinal|< Prev]] [[TCEC Season 9#Superfinal|Next >]]'''<br/>
 The Season 8 Superfinal between [[Stockfish|Stockfish 021115]] and [[Komodo|Komodo 9.3x]] was played from November 06 until November 30, 2015 with 50 different 8 move openings selected by IM [https://en.wikipedia.org/wiki/Erik_Kislik Erik Kislik], of which 33 are his own and the remaining 17 are made by [[Nelson Hernandez|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 <ref>[http://www.chessdom.com/komodo-is-triple-champion-wins-the-top-chess-engine-championship-2015/ Komodo is triple champion, wins the Top Chess Engine Championship 2015!], [[Chessdom]], November 29, 2015</ref> .{| class="wikitable"! # ! Engine ! W! D! L! P<span style="font-size: 80%; vertical-align: sub;">100</span>|- ! 1| [[Komodo|Komodo 9.3x]]| style="text-align:right;" | 9| style="text-align:right;" | 89| style="text-align:right;" | 2! 53½|-! 2| [[Stockfish|Stockfish 021115]]| style="text-align:right;" | 2| style="text-align:right;" | 89| style="text-align:right;" | 9! 46½ |}
{| class="wikitable"
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