TCEC Swiss 4

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See also TCEC Swiss rules‎‎.

Tournament format

The TCEC Swiss 4 uses the TCEC Swiss Tournament System with the following configuration:

  • 11 double rounds
  • Group seeding with .. engines divided in .. groups. Groups populated using TCEC Season 23 and Swiss 3 compiled final results.

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 - email confirmed -> update dev-20230114-3d2381d7 received
  2. LCZero - update LCZero 0.30-dag-6b5f9451-BT2-3250000 received
  3. KomodoDragon - no update coming
  4. Ethereal - no update coming
  5. Stoofvlees - no update coming
  6. SlowChess
  7. rofChade - email confirmed -> new version 3.015 received
  8. Berserk - update 20230119b received
  9. Minic - email confirmed - no update coming 3.33 plays again
  10. RubiChess - update RubiChess 20230121 received
  11. Revenge - update announced -> version 20230120 received
  12. Seer - update 20230107 received
  13. ScorpioNN
  14. Koivisto - engine announced, updated questionnaire received -> update 9.0 received
  15. Igel - update via discord -> update 3.4dev received
  16. Fritz - no update coming
  17. Arasan - update announced -> a072c67 received
  18. Nemorino -
  19. BlackMarlin - no update coming
  20. Halogen - new version is available -> latest version sent 11.4.1 -> version 11.4.1 received
  21. Marvin - update 6.2.0-a7 received
  22. Tucano - probably no update
  23. Wasp - update announced -> Wasp 6.09 received
  24. Velvet - no update v5.0.0 will play
  25. Weiss - update announced - update 2.1-dev6 received
  26. Winter - version 1.22 underway -> version 1.23 received
  27. ChessFighter - no update coming
  28. Stash - update to 34.3 received
  29. Expositor - email confirmed -> no update coming -> updated still, also logo -> version set to TCEC24-20230123
  30. Zahak - no update coming yet
  31. Drofa - update announced -> 3.3.27 received -> due to bug reverted back version 3.3.26
  32. Mantissa - no update coming
  33. Mr_Bob - update announced -> update dev-20230121-nnue received
  34. Counter - new NNUE Counter 5.0 received
  35. Amoeba - update announced -> new version 3.5 received
  36. Bagatur - 3.6b to be sent -> update 3.6b received
  37. Cheese - sending Cheese 3.1.1 soon - received
  38. ice4 - update to version 8bf8c8d and new logo received -> Version name updated to s24-swiss
  39. Uralochka - engine and questionnaire received -> Uralochka 3.39e-avx512 received
  40. StockNemo - engine announced, questionnaire received -> StockNemo 5.7.0.0 received
  41. Smallbrain - engine and questionnaire received -> Smallbrain dev-20230118-4d10160 received -> bug fix update to dev-20230121-b107225
  42. 4ku - update announced -> new version the mighty 4ku 2.0 received

Bugfixes and problems

Bugs (or problems) found during the Swiss:

  1. smallbrain crash Testing Game 5 - TB & SMP-related. Fixed.
  2. Drofa Testing Games 47-48. Bug probably related to TT/SMP. Reverted to older version.

Engines not playing

  1. ClassicAra - invitation declined, may participate in the future again
  2. tomitankChess - update mandatory for participation - no update received
  3. Asymptote - update mandatory for participation - no update received
  4. Booot - did not reply
  5. ChessCoach - cannot participate atm, but would like to in the future
  6. ...

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
A1 Stockfish B1 rofChade C1 ScorpioNN D1 BlackMarlin E1 Weiss F1 Drofa G1 Cheese
A2 LCZero B2 Berserk C2 Koivisto D2 Halogen E2 Winter F2 Mantissa G2 ice4
A3 KomodoDragon B3 Minic C3 Igel D3 Marvin E3 ChessFighter F3 Mr_Bob G3 Uralochka
A4 Ethereal B4 RubiChess C4 Fritz D4 Tucano E4 Stash F4 Counter G4 StockNemo
A5 Stoofvlees B5 Revenge C5 Arasan D5 Wasp E5 Expositor F5 Amoeba G5 Smallbrain
A6 SlowChess B6 Seer C6 Nemorino D6 Velvet E6 Zahak F6 Bagatur G6 4ku

Seeding order

  1. A1 Stockfish
  2. B1 rofChade
  3. C1 ScorpioNN
  4. D1 BlackMarlin
  5. E1 Weiss
  6. F1 Drofa
  7. G1 Cheese
  8. A2 LCZero
  9. B2 Berserk
  10. C2 Koivisto
  11. D2 Halogen
  12. E2 Winter
  13. F2 Mantissa
  14. G2 ice4
  15. A3 KomodoDragon
  16. B3 Minic
  17. C3 Igel
  18. D3 Marvin
  19. E3 ChessFighter
  20. F3 Mr_Bob
  21. G3 Uralochka
  22. A4 Ethereal
  23. B4 RubiChess
  24. C4 Fritz
  25. D4 Tucano
  26. E4 Stash
  27. F4 Counter
  28. G4 StockNemo
  29. A5 Stoofvlees
  30. B5 Revenge
  31. C5 Arasan
  32. D5 Wasp
  33. E5 Expositor
  34. F5 Amoeba
  35. G5 Smallbrain
  36. A6 SlowChess
  37. B6 Seer
  38. C6 Nemorino
  39. D6 Velvet
  40. E6 Zahak
  41. F6 Bagatur
  42. G6 4ku

Swiss 4 results

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Swiss Opening Book

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Trivia

Overachiever

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Drawking

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Top ELO gainers

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Poll results

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Upsets

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