TCEC Swiss 6

See also TCEC Swiss rules‎‎.

Tournament format

The TCEC Swiss 6 uses the TCEC Swiss Tournament System with the following configuration:

• 11 12 double rounds
• Group seeding with .. engines divided in .. groups. Groups populated using TCEC Season 25 and Swiss 5 compiled final results.

Deadline

Deadline for sending in the (updated) engines is Monday 15 January 2024 12:00 UTC.

Invited engines

Here is the full list of engines that are invited and envisioned to participate.

Explanation of typography

Explanation of special typography:

• bold engines are invited for this particular event and contact has been sought or established with, the author(s)
• struck through means declined or not participating
• bold italics means engine and/or update received.
• italics means engine same as last event.
• underlined means possible invite

Engines

1. Stockfish - to be updated per usual procedure - Stockfish dev-20231222-fbdf5d94 -> dev-20240114-b5e8169a
2. LCZero - reminder sent per discord - LCZero 0.31-dag-a487796-BT3-2860000 received
3. KomodoDragon - no further updates expected in the future, recently updated version 3.3 will play
4. Berserk - update incoming, possibly special TCEC branch - version 20240114_tcec-swiss6 received
5. RubiChess - update announced -> RubiChess 20240112 received - RubiChess 20231105 -> 20240112
6. Ethereal - minor update announced per discord - normal update procedure -> 14.28
7. Stoofvlees - reminder sent - existing version will play = version IIb5
8. Igel - no update this time, last known version submitted = 3.5.5
9. rofChade - possible update announced - update to rofChade 3.103 received - rofChade 3.1 -> 3.103
10. Clover - update announced per discord - engine received per discord -> 6.1.6
11. Seer - reminder sent - update underway, hopefully ready in time - update received via discord: version 20240111
12. Caissa - new version version 1.16 received - Caissa 1.14.1 -> 1.16.2
13. Revenge - no update this time, last known version 20231112 submitted
14. Minic - possible update announced -> received Minic 3.40 per discord and script
15. Viridithas - new version available per script -> Viridithas 12.0.0 dev3
16. ScorpioNN - reminder sent - reply received, awaiting version info -> no update = 3.0.15.10
17. Fritz Ginkgo - update announced -> replaced by Ginkgo 4.0 - Ginkgo Valencia_1.01 -> 4.0
18. DeepSjeng - reminder sent - update announced - update version 36a30 received
19. Arasan - update wth new net announced - version 24.1 received
20. BlackMarlin - update announced, to be completed via discord - updated per usual script - BlackMarlin 8.0dev-2 -> 8.0 - BlackMarlin 8.0dev-2 -> ?
21. Uralochka - reminder sent -> update to Uralochka 3 received; the engine is now Open Source
22. Marvin - update to Marvin 6.3.0-4 received - Marvin 6.3.0-3 -> 6.3.0-4
23. Velvet - update to Velvet v6.0.0 submitted
24. Tucano - update announced - major rewrite 11.14 development version received - Tucano 10.13 -> 11.14
25. Wasp - update announced - Wasp 6.65 received -> overview of updates: Wasp 6.62 -> 6.65 -> 6.65b -> 6.65c (finally with TB disabled after several crashes)
26. Booot - reminder sent - this time old version 7.2 will play, update announced for the near future
27. Weiss - reminder sent - update ready per normal script - Weiss 2.1-dev9 -> 2.1-dev10
28. Equisetum - update announced -> new version s_4.1.1_NN_variegatum_d received - Equisetum s_4.0.6c.NN_variegatum.a -> s_4.1.1_NN_variegatum_d
29. Winter - major update to version 2.07b submitted and questionnaire regarding this new architecture received - version 2.07d received
30. Expositor - presumably no update - update received - Expositor 25.C -> WK16+1159 but is it perhaps same version?
31. Stash - reminder sent - update received per discord - Stash 35.6
32. Mr_Bob - UPDATE MANDATORY -> update announced - update received (hopefully stable) -> dev-20240115
33. ChessFighter - update announced - update to version 3.17 received
34. Counter - UPDATE MANDATORY - update to counter-5.5-linux-amd64 received
35. Cheese - UPDATE MANDATORY -> update received: Cheese 3.2.0 submitted
36. Bagatur - UPDATE MANDATORY -> update to Release 3.7e received
37. ice4 - recent version from 4kIII will play
38. 4ku - recent version 4ku 4.0 will play
39. STRO4K - provisionally added - update received -> version 2.1 - STRO4K 2.0 -> 2.1
40. Willow - engine submitted
41. akimbo -> akimbo 0.8.0 submitted
42. Altair - invitation accepted - newer update in preparation - Altair 6.1.3 TCEC received - Altair 6.1.3
43. Stormphrax - invitation accepted - engine submitted per discord - Stormphrax 4.0.8-tcec_8c37ad4
44. Obsidian - questionnaire received, under evaluation -> to be invited - reminder sent - engine received per discord
45. Avalanche - questionnaire received, under evaluation -> to be invited - submission announced -> v2.1.0 received (no TB support yet)
46. Cheng - questionnaire received and approved, invited and accepted, engine Cheng 4.44 dev received - Cheng 4.42_dev -> 4.44_dev
47. Texel - questionnaire pending, received, and approved - Texel 1.11 received
48. StockDory - reminder sent - reply received, no update at the moment, engine kept on hold and in reserve if necessary -> update to StockDory Starfish-0.1 received

Bugs and problems

1. Wasp crashed in Swiss testing games #33, #34, #93, #234
2. Stash time loss in Swiss testing game #39
3. Texel time loss in Swiss testing game #254
4. Hardware problem: SSD failure Swiss 6 game 54. SSD replaced and TB7 data copied to new SSD.
5. Arasan incorrect settings, no NNUE net loaded. Arasan Swiss 6 round 1 and round 2 games replayed. Game result changed for one game in Round1, and for both games in Round 2
6. Link to 7-piece DTZ files was missing after SSD replacement
7. Four Ginkgo games were played without working TB7. Ginkgo dev did not think it was necessary to replay the games.
8. Web server outage started during game 104. Partial functionality at game 106, and all good at game 112.

Engines not playing

1. Smallbrain - by author's notice, this engine is currently out of development
2. BlackCore - UPDATE MANDATORY - by author's notice, this engine is out of development, possibly for good, and will be replaced by WhiteCore later this year
3. Zahak - UPDATE MANDATORY -> by author's notice, invitation declined as engine is EOL
4. Fritz -> replaced by Ginkgo
5. chess.cpp - questionnaire received, under evaluation -> to be invited - update on existing version announced - withdraws for reason of development problems
6. Koivisto - UPDATE MANDATORY - reminder sent - engine not playing by message of its authors

Engines that did not respond

1. Amoeba - UPDATE MANDATORY - reminder sent - NO REPLY
2. OliThink - UPDATE MANDATORY - reminder sent - NO REPLY

Final standings

...

Seeding

See the page on seeding for procedural details.

Seeding groups

Seeding groups

Group A	Group B	Group C	Group D	Group E	Group F	Group G	Group H
Stockfish	Stoofvlees	Revenge	Arasan	Wasp	Stash	ice4	Stormphrax
LCZero	Igel	Minic	BlackMarlin	Booot	Mr Bob	4ku	Obsidian
KomodoDragon	rofChade	Viridithas	Uralochka	Weiss	ChessFighter	STRO4K	Avalanche
Berserk	Clover	ScorpioNN	Marvin	Equisetum	Counter	Willow	Cheng
RubiChess	Seer	Ginkgo	Velvet	Winter	Cheese	Akimbo	Texel
Ethereal	Caissa	DeepSjeng	Tucano	Expositor	Bagatur	Altair	StockDory

Seeding order

1. (A1) Stockfish
2. (B1) Stoofvlees
3. (C1) Revenge
4. (D1) Arasan
5. (E1) Wasp
6. (F1) Stash
7. (G1) ice4
8. (H1) Stormphrax
9. (A2) LCZero
10. (B2) Igel
11. (C2) Minic
12. (D2) BlackMarlin
13. (E2) Booot
14. (F2) Mr Bob
15. (G2) 4ku
16. (H2) Obsidian
17. (A3) KomodoDragon
18. (B3) rofChade
19. (C3) Viridithas
20. (D3) Uralochka
21. (E3) Weiss
22. (F3) ChessFighter
23. (G3) STRO4K
24. (H3) Avalanche
25. (A4) Berserk
26. (B4) Clover
27. (C4) ScorpioNN
28. (D4) Marvin
29. (E4) Equisetum
30. (F4) Counter
31. (G4) Willow
32. (H4) Cheng
33. (A5) RubiChess
34. (B5) Seer
35. (C5) Ginkgo
36. (D5) Velvet
37. (E5) Winter
38. (F5) Cheese
39. (G5) Akimbo
40. (H5) Texel
41. (A6) Ethereal
42. (B6) Caissa
43. (C6) DeepSjeng
44. (D6) Tucano
45. (E6) Expositor
46. (F6) Bagatur
47. (G6) Altair
48. (H6) StockDory

Swiss 6 results

..

Swiss Opening Book

The book for Swiss 6 (12 rounds of 24 game pairs) was assembled by Bastiaan (kbg519v1a) from high-level human games from the 1960s to 1980s. The lines are at most eight full moves. Bias is high and always favouring the white side. In each round game pairs 23 and 24 use the same book line. Otherwise all lines are unique and almost all lines are new to TCEC competition. See http://chessopeningsforengines.wikidot.com/tcec-s26-swiss-6-origins for a concordance.

Trivia

Upsets

1. Round 1, Marvin - ScorpioNN 1.5-0.5
2. Round 1, BlackMarlin - Minic 1.5-0.5
3. Round 3, Altair - Stoofvlees 1.5-0.5
4. Round 3, Weiss - Viridithas 1.5-0.5
5. Round 4, 4ku - Cheng 1.5-0.5
6. Round 4, Texel - Velvet 1.5-0.5
7. Round 4, Altair - akimbo 1.5-0.5
8. Round 4, Weiss - BlackMarlin 1.5-0.5
9. Round 6, StockDory - Cheng 1.5-0.5

Whales & Heroes

Whales: ignaloidas (x2) kanchess PawnMasseur (x2) polotovarman cylently61 (x2) RobbyRobbyRob (x4)🏆 crazy_igel_fan (x2) kittenkaboodle naphtha42 (x2) mrbdzz tmsenseii windfishballad creyzamo bequral ⭐ G240

Heroes: kanchess🏆 ignaloidas RobbyRobbyRob tmsensei naphtha42 ⭐ G191

Polls

1. Best two rookies of Swiss 6?(Closed)
2. Nevermind who will win Swiss 6, who do you WANT to win?(Closed)
3. Never mind which are cutest, which are the best looking logos?(Closed)
4. Who will win Swiss 6?(Closed)
5. Which 9 will qualify for the Entrance League?(Vote)
6. Which 32 will qualify for Cup 13? (Top 32 qualifies) (Vote)