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'''TCEC Season 9''',<br/>
the Top Chess Engine Championship (TCEC) Season 9 ran from May 1st to December 1st [[Timeline#2016|2016]] as a competition between 32 chess engines, divided into three stages and a Superfinal. '''Stage 1''', a single-round robin consisting of two seeded sub-divisions (a) and (b) of 16 engines each, is played with a two move [[Opening Book|opening book]]. '''Stage 2''', a double round robin, and '''Stage 3''', an octo round robin, is played with an eight move book. First time, a '''TCEC Rapid''' is scheduled after Stage 3 of the Top Chess Engine Championship. All 32 engines play double round robin with a total of 992 games <ref>[http://www.chessdom.com/tcec-rapid-starting-soon-with-32-engines/ TCEC rapid starting soon with 32 engines], [[Chessdom]], August 30, 2016</ref> with time control of 25 min + 10 sec <ref>[http://www.chessdom.com/tcec-rapid-important-information-update/ TCEC rapid – important information update | Chessdom], September 01, 2016</ref> . {| class="wikitable" style="margin: auto;"! [[#SuperfinalStockfish|SuperfinalStockfish 8]] :| won the [[Stockfish#Superfinal|Stockfish 8Superfinal]] | - | versus [[Houdini|Houdini 5]]! with a margin of '''54½-45½ '''.|}
=Participants=
{| class="wikitable"
|-
|}
* [https://chessprogramming.wikispaces.com/space/statscodes CC Country Codes]
=Stages=<span id="Stage1"></span>==Stage 1= = '''[[TCEC Season 8#Stage1|< Prev]] [[TCEC Season 10#Stage1|Next >]]'''<br/>Season 8, Stage 1, May 01, 2016 - June 14, 2016 . The top 8 from each of Stage 1a/1b will qualify for Stage 2.===Stage 1a===
{| class="wikitable"
|-
! #
! Engine
! Ko
! Ho
! P<span style="font-size: 80%; vertical-align: sub;">15</span>
! SB
|-style="background-color:#ccffcc;"
! 1
| style="text-align:left;" | [[Komodo|Komodo 9.42]]
| style="text-align:center;" | '''x'''
| style="text-align:center;" | 1
! 14
| style="text-align:center;" | 95¾
|-style="background-color:#ccffcc;"
! 2
| style="text-align:left;" | [[Houdini|Houdini 4]]
| style="text-align:center;" | 0
| style="text-align:center;" | '''x'''
! 12½
| style="text-align:center;" | 80¼
|-style="background-color:#ccffcc;"
! 3
| style="text-align:left;" | [[Rybka|Rybka 4.1]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 11½
| style="text-align:center;" | 68¾
|-style="background-color:#ccffcc;"
! 4
| style="text-align:left;" | [[Protector|Protector 1.9]]
| style="text-align:center;" | ½
| style="text-align:center;" | ½
! 10½
| style="text-align:center;" | 67½
|-style="background-color:#ccffcc;"
! 5
| style="text-align:left;" | [[Gull|Gull 3]]
| style="text-align:center;" | ½
| style="text-align:center;" | 0
! 10
| style="text-align:center;" | 57½
|-style="background-color:#ccffcc;"
! 6
| style="text-align:left;" | [[Ginkgo|Ginkgo 1.7]]
| style="text-align:center;" | 0
| style="text-align:center;" | ½
! 9
| style="text-align:center;" | 52¼
|-style="background-color:#ccffcc;"
! 7
| style="text-align:left;" | [[Hannibal|Hannibal 220416]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 9
| style="text-align:center;" | 48¾
|-style="background-color:#ccffcc;"
! 8
| style="text-align:left;" | [[Raptor LU|Raptor 2.2]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 9
| style="text-align:left;" | [[Bobcat|Bobcat 7.6]]
| style="text-align:center;" | 0
| style="text-align:center;" | ½
! 10
| style="text-align:left;" | [[Fizbo|Fizbo 1.7]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 11
| style="text-align:left;" | [[Texel|Texel 1.06a45]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 12
| style="text-align:left;" | [[Hakkapeliitta|Hakkapeliitta 210416]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 13
| style="text-align:left;" | [[DisasterArea|DisasterArea 1.63]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 14
| style="text-align:left;" | [[Laser|Laser 1.1]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 15
| style="text-align:left;" | [[Myrddin|Myrddin 0.87]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 16
| style="text-align:left;" | [[Fridolin|Fridolin 2]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
|}
===Stage 1b===
{| class="wikitable"
|-
! #
! Engine
! St
! Ni
! P<span style="font-size: 80%; vertical-align: sub;">15</span>
! SB
|-style="background-color:#ccffcc;"
! 1
| style="text-align:left;" | [[Stockfish|Stockfish 210516]]
| style="text-align:center;" | '''x'''
| style="text-align:center;" | ½
! 12
| style="text-align:center;" | 76½
|-style="background-color:#ccffcc;"
! 2
| style="text-align:left;" | [[Nirvanachess|Nirvana 160416]]
| style="text-align:center;" | ½
| style="text-align:center;" | '''x'''
! 11½
| style="text-align:center;" | 74
|-style="background-color:#ccffcc;"
! 3
| style="text-align:left;" | [[Jonny|Jonny 7.20]]
| style="text-align:center;" | ½
| style="text-align:center;" | 0
! 11
| style="text-align:center;" | 68¾
|-style="background-color:#ccffcc;"
! 4
| style="text-align:left;" | [[Fire|Fire 5]]
| style="text-align:center;" | ½
| style="text-align:center;" | ½
! 10½
| style="text-align:center;" | 64¾
|-style="background-color:#ccffcc;"
! 5
| style="text-align:left;" | [[Naum|Naum 4.6]]
| style="text-align:center;" | 0
| style="text-align:center;" | ½
! 10½
| style="text-align:center;" | 63
|-style="background-color:#ccffcc;"
! 6
| style="text-align:left;" | [[Chiron|Chiron 3.01]]
| style="text-align:center;" | ½
| style="text-align:center;" | ½
! 10½
| style="text-align:center;" | 61½
|-style="background-color:#ccffcc;"
! 7
| style="text-align:left;" | [[Andscacs|Andscacs 0.86134b]]
| style="text-align:center;" | ½
| style="text-align:center;" | ½
! 10
| style="text-align:center;" | 62
|-style="background-color:#ccffcc;"
! 8
| style="text-align:left;" | [[Vajolet#2|Vajolet2 2.2.15]]
| style="text-align:center;" | ½
| style="text-align:center;" | ½
! 9
| style="text-align:left;" | [[Critter|Critter 1.6a]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 10
| style="text-align:left;" | [[Arasan|Arasan 19.0.1]]
| style="text-align:center;" | 0
| style="text-align:center;" | ½
! 11
| style="text-align:left;" | [[The Baron|The Baron 3.40b]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 12
| style="text-align:left;" | [[Gaviota|Gaviota 1.01]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 13
| style="text-align:left;" | [[Fruit Reloaded|Fruit 3.1.3]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 14
| style="text-align:left;" | [[Jellyfish|Jellyfish 1.1]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 15
| style="text-align:left;" | [[Delphil|Delphil 3.3b2]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
! 16
| style="text-align:left;" | [[FireFly|Firefly 2.7.0]]
| style="text-align:center;" | 0
| style="text-align:center;" | 0
|}
* SB: [https://en.wikipedia.org/wiki/Sonneborn-Berger_score Sonneborn-Berger score]
<span id="Stage2"></span>==Stage 2= = '''[[TCEC Season 8#Stage2|< Prev]] [[TCEC Season 10#Stage2|Next >]]'''<br/> Season 9, Stage 2, June 14, 2016 - July 22, 2016. Double round robin The top 8 from each of Stage 2 will qualify for Stage 3.
{| class="wikitable"
|-
! #
! 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 10]]
| style="text-align:center;" | '''x'''
| style="text-align:center;" | ½½
! 22½
| style="text-align:center;" | 320¼
|-style="background-color:#ccffcc;"
! 2
| style="text-align:left;" | [[Stockfish|Stockfish 110616]]
| style="text-align:center;" | ½½
| style="text-align:center;" | '''x'''
! 22½
| style="text-align:center;" | 314
|-style="background-color:#ccffcc;"
! 3
| style="text-align:left;" | [[Jonny|Jonny 7.30]]
| style="text-align:center;" | ½½
| style="text-align:center;" | ½½
! 18½
| style="text-align:center;" | 256¾
|-style="background-color:#ccffcc;"
! 4
| style="text-align:left;" | [[Gull|Gull 3]]
| style="text-align:center;" | 00
| style="text-align:center;" | ½½
! 18½
| style="text-align:center;" | 251½
|-style="background-color:#ccffcc;"
! 5
| style="text-align:left;" | [[Fire|Fire 5]]
| style="text-align:center;" | ½0
| style="text-align:center;" | ½½
! 18
| style="text-align:center;" | 252½
|-style="background-color:#ccffcc;"
! 6
| style="text-align:left;" | [[Andscacs|Andscacs 0.86189b]]
| style="text-align:center;" | ½0
| style="text-align:center;" | ½0
! 18
| style="text-align:center;" | 241
|-style="background-color:#ccffcc;"
! 7
| style="text-align:left;" | [[Houdini|Houdini 4]]
| style="text-align:center;" | 00
| style="text-align:center;" | 00
! 16½
| style="text-align:center;" | 207
|-style="background-color:#ccffcc;"
! 8
| style="text-align:left;" | [[Rybka|Rybka 4.1]]
| style="text-align:center;" | ½½
| style="text-align:center;" | ½0
! 9
| style="text-align:left;" | [[Ginkgo|Ginkgo 1.75]]
| style="text-align:center;" | ½0
| style="text-align:center;" | ½0
! 10
| style="text-align:left;" | [[Hannibal|Hannibal 100616]]
| style="text-align:center;" | 0½
| style="text-align:center;" | 00
! 11
| style="text-align:left;" | [[Nirvanachess|Nirvana 120616]]
| style="text-align:center;" | ½0
| style="text-align:center;" | ½0
! 12
| style="text-align:left;" | [[Protector|Protector 1.9]]
| style="text-align:center;" | 0½
| style="text-align:center;" | 00
! 13
| style="text-align:left;" | [[Naum|Naum 4.6]]
| style="text-align:center;" | 0½
| style="text-align:center;" | 00
! 14
| style="text-align:left;" | [[Chiron|Chiron 3.01]]
| style="text-align:center;" | ½0
| style="text-align:center;" | ½0
! 15
| style="text-align:left;" | [[Raptor LU|Raptor 2.3]]
| style="text-align:center;" | 00
| style="text-align:center;" | ½0
! 16
| style="text-align:left;" | [[Vajolet#2|Vajolet2 2.2.15]]
| style="text-align:center;" | 0½
| style="text-align:center;" | 0½
|}
* SB: [https://en.wikipedia.org/wiki/Sonneborn-Berger_score Sonneborn-Berger score]
<span id="Stage3"></span>==Stage 3== '''[[TCEC Season 8#Stage3|< Prev]] [[TCEC Season 10#Stage3|Next >]]'''<br/> Season 9, Stage 3, July 23, 2016 - September 08, 2016. The format for Stage 3 was an octo round robin so that each engine played both sides of the same opening against each other, four times. The top 2 engines, [[Stockfish]] and the new [[Houdini]] will meet in the Superfinal, which is scheduled after the new TCEC rapid with all 32 engines. [[TCEC Season 8|Defending TCEC champion]] [[Komodo]] did not qualify and came in third.
{| class="wikitable"
|-
! #
! Engine
! Stockfish
! Houdini
! P<span style="font-size: 80%; vertical-align: sub;">56</span>
! SB
|-style="background-color:#ccffcc;"
! 1
| style="text-align:left;" | [[Stockfish|Stockfish 160716]]
| style="text-align:center;" | ········
| style="text-align:center;" | ½½½½1½1½
! 39
| style="text-align:center;" | 1008½
|-style="background-color:#ccffcc;"
! 2
| style="text-align:left;" | [[Houdini|Houdini 200716]]
| style="text-align:center;" | ½½½½0½0½
| style="text-align:center;" | ········
! 3
| style="text-align:left;" | [[Komodo|Komodo 10.1]]
| style="text-align:center;" | ½½0½½½½½
| style="text-align:center;" | ½½½½½½0½
! 4
| style="text-align:left;" | [[Fire|Fire 5]]
| style="text-align:center;" | ½½½0½0½0
| style="text-align:center;" | ½½½½½½½0
! 5
| style="text-align:left;" | [[Andscacs|Andscacs 0.872b]]
| style="text-align:center;" | ½00½½0½0
| style="text-align:center;" | ½½0½0½0½
! 6
| style="text-align:left;" | [[Jonny|Jonny 8]]
| style="text-align:center;" | 0½0½½00½
| style="text-align:center;" | ½00½00½½
! 7
| style="text-align:left;" | [[Gull|Gull 3]]
| style="text-align:center;" | 0½00½½0½
| style="text-align:center;" | 00½½0½0½
! 8
| style="text-align:left;" | [[Rybka|Rybka 4.1]]
| style="text-align:center;" | ½0½0½0½0
| style="text-align:center;" | ½½00½0½0
=Superfinal=
'''[[TCEC Season 8#Superfinal|< Prev]] [[TCEC Season 10#Superfinal|Next >]]'''<br/>
The '''Season 8 Superfinal''' between [[Houdini|Houdini 5]] and [[Stockfish|Stockfish 8]] was played from November 11 until December 05, 2016. 100 games with 50 different openings selected by [[Jeroen Noomen]] <ref>[http://blogchess2016.blogspot.de/2016/12/tcec-superfinal-9-pgn-new-noomen.html Computer Chess Testing: TCEC 9 superfinal PGN & new Noomen Testsuite 2016]</ref> <ref>[http://www.talkchess.com/forum/viewtopic.php?t=65452 TCEC 9 superfinal tournament book] by [[Jeroen Noomen]], [[CCC]], October 15, 2017</ref>. '''Stockfish 8''' won convincingly, '''54½ . {| class="wikitable"! # ! Engine ! W! D! L! P<span style="font-size: 80%; vertical-align: sub;">100</span>|- ! 1| [[Stockfish|Stockfish 8]]| style="text- 45½''' (+align:right;" | 17| style="text-align:right;" | 75| style="text-align:right;" | 8! 54½ |-! 2| [[Houdini|Houdini 5]] | style="text-align:right;" | 8). Hard times for Black.| style="text-align:right;" | 75| style="text-align:right;" | 17! 45½ |}
{| class="wikitable"
