TCEC Swiss 5

See also TCEC Swiss rules‎‎.

Tournament format

The TCEC Swiss 5 uses the TCEC Swiss Tournament System with the following configuration:

• 11 double rounds
• Group seeding with 42 engines divided in 7 groups. Groups populated using TCEC Season 24 and Swiss 4 compiled final results, adding new engines at the bottom.

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 - update per usual repo at deadline - Stockfish dev-20230528-7e9b131e -> dev-20230614-32d3284d
2. LCZero - updated LCZero 0.31-dag-590cd9ba-T1-4000000 -> 0.31-dag-dd64c7e-T1-4000000
3. KomodoDragon - possible update upcoming -> progress is being made but not yet enough for update, same version will play
4. Ethereal - update submitted per discord (same net, engine update to latest)
5. Stoofvlees - update to StoofvleesIIb5_CUDA11.8 (bugfix release) submitted
6. Koivisto - NO REPLY
7. Slowchess - no updates coming in the hear future, but development not definitively stopped yet
8. Igel - upcoming update announced -> Igel 3.5.1 submitted
9. Revenge - upcoming update announced -> no update ready in time
10. Rubichess - no update announced yet - update from 20230419 -> 20230610 submitted
11. rofChade - possible update upcoming -> 3.020 submitted
12. ScorpioNN - NO REPLY
13. Seer - update submitted per discord
14. Minic - possible update through discord -> 3.37 submitted
15. Fritz - no update for this event, but update will come mid July to come for next event
16. BlackMarlin - NO REPLY
17. Marvin - no update for this event, Marvin 6.2.0-a11 will play
18. Uralochka - upcoming update announced -> no update 3.39g-avx512 will play again
19. Arasan - update per usual repo at deadline
20. Wasp - update announced -> update to Wasp 6.55 submitted
21. Halogen - NO REPLY
22. Velvet - update submitted bug-fix release v5.2.1
23. Tucano - probably s24 will play, new version Tucano NN still in preparation -> small update to 10.13 submitted now
24. Booot - accepts the invitation
25. Nemorino - NO REPLY
26. Expositor - new version announced -> 25·S submitted
27. Smallbrain - update submitted per discord
28. Mantissa - no update but update is in preparation for later
29. Mr_Bob - upcoming updated announced -> dev 20230210 submitted after deadline: accepted
30. StockDory - binary will be submitted soon -> 1.0-Alpha submitted
31. Stash - NO REPLY
32. Weiss - possible update per usual repo at deadline
33. Winter - NO REPLY
34. Drofa -> upgraded to new engine Equisetum, TCEC Questionnaire received, engine submitted is version s_4.0.5.NN_bogotense
35. ChessFighter - upcoming update announced -> 3.15 submitted
36. Bagatur - latest version 3.7d submitted
37. ice4 - update to 3.1 submitted
38. 4ku - update to 4ku 3.1 submitted
39. OliThink - accepted invitation, TCEC Questionnaire received, OliThink 5.10.1 submitted (though 5.10.3 exists, this is the latest Linux version)
40. Clover - new participant, TCEC Questionnaire received, Clover 5.0 submitted -> update received
41. Caissa - accepted invitation, awaiting TCEC Questionnaire -> questionnaire received, master version 1.9 submitted
42. Deep_Sjeng - version 3.6 updated to 36a8 - currently under consideration for invite, TCEC Questionnaire received -> officially invited, engine submitted

Bugfixes and problems

Bugs (or problems) found during the Swiss:

1. ...

Other possible future new engines

1. Viridithas - currently under consideration for invite, TCEC Questionnaire received -> invite decision postponed until season 26
2. BlackCore - currently under consideration for invite, TCEC Questionnaire received -> invite decision postponed until season 26

Engines not playing

1. Zahak - no update and possibly declines the invitation to make room for new engines? it was agreed we keep it if it helps tcec get an even number of engines in swiss, else we drop it.
2. Cheese - existing version 3.1.1 proposed as new version is not yet ready
3. Amoeba - no update coming
4. Counter - no update and decided to skip Season 25
5. Berserk - no more updates, engine is EOL -> withdrawn by author's request
6. ...

Final standings

...

Seeding

See the page on seeding for procedural details.

Seeding groups

Seeding groups

	1	2	3	4	5	6	7
Group A	Stockfish	LCZero	KomodoDragon	Ethereal	Stoofvlees	Koivisto	Slowchess
Group B	Igel	Revenge	Rubichess	rofChade	ScorpioNN	Seer	Minic
Group C	Fritz	BlackMarlin	Marvin	Uralochka	Arasan	Wasp	Halogen
Group D	Velvet	Tucano	Booot	Nemorino	Expositor	Smallbrain	Mantissa
Group E	Mr_Bob	StockDory	Stash	Weiss	Winter	Equisetum	ChessFighter
Group F	Bagatur	ice4	4ku	OliThink	Clover	Caissa	Deep_Sjeng

Seeding order

1. (A1) Stockfish
2. (B1) Igel
3. (C1) Fritz
4. (D1) Velvet
5. (E1) Mr_Bob
6. (F1) Bagatur
7. (A2) LCZero
8. (B2) Revenge
9. (C2) BlackMarlin
10. (D2) Tucano
11. (E2) StockDory
12. (F2) ice4
13. (A3) KomodoDragon
14. (B3) Rubichess
15. (C3) Marvin
16. (D3) Booot
17. (E3) Stash
18. (F3) 4ku
19. (A4) Ethereal
20. (B4) rofChade
21. (C4) Uralochka
22. (D4) Nemorino
23. (E4) Weiss
24. (F4) OliThink
25. (A5) Stoofvlees
26. (B5) ScorpioNN
27. (C5) Arasan
28. (D5) Expositor
29. (E5) Winter
30. (F5) Clover
31. (A6) Koivisto
32. (B6) Seer
33. (C6) Wasp
34. (D6) Smallbrain
35. (E6) Equisetum
36. (F6) Caissa
37. (A7) Slowchess
38. (B7) Minic
39. (C7) Halogen
40. (D7) Mantissa
41. (E7) ChessFighter
42. (F7) Deep_Sjeng

Swiss 5 results

..

Swiss Opening Book

By Bastiaan Braams: questionable openings recently played by top human players, usually in some rapid or blitz event.

Trivia

Overachiever

..

Drawking

..

Top ELO gainers

..

Poll results

..

Upsets

...