TCEC Swiss 7

See also TCEC Swiss rules‎‎.

Tournament format

The TCEC Swiss 7 uses the TCEC Swiss Tournament System with the following configuration:

• 11 double rounds
• Group seeding with 44 engines divided in 10 groups. Groups populated using TCEC Season 26 and Swiss 6 compiled final results.

Placement and Playoffs

1. All engines that have a place in the TCEC Leagues and were not relegated from the lowest league automatically qualify for Swiss 7.
2. Category 1 below contains 9 engines and all 9 are directly qualified for Swiss 7.
3. Categories 0 and 2 below together have 9 engines and they will do a playoff for 4 spots in swiss 7: Cat 0+2 Playoff: 1DRR at 30+3 will be played.
4. Category 3 below has 5 engines and they will do a playoff for 1 spot in swiss 7: Cat 3 Playoff: another 1DRR at 30+3 will be played.
5. No tiebreaks will be used to decide quallifiers from these playoffs, and resulting placements will be decided on points, if needed with extra playoff pairs.

TD decisions during the event

1. Swiss 7 round 1 will replay games 31 and 32: Clover to be DQ'd because of timeloss and to be replaced by Integral.

Engines

to be invited for swiss and/or qualification playoffs

engines already in leagues

1. Stockfish - engine promised - admin will pull latest soon -> Stockfish dev-20240513-e608eab8 -> dev-20240820-9fb58328 (Updated for S27 VSOB 27, still same version) -> Stockfish dev-20240513-e608eab8 -> dev-20240820-9fb58328 -> 17 (Updated because rare change to get actual release to play, practically same as what was already there otherwise)
2. LCZero - reminder sent - update submitted per email -> LCZero 0.31-dag-5350a2e-BT4-6147500 -> 0.31-dag-321205e-BT4-6147500-it332 (email, discord)
3. Berserk - reminder sent - last Berserk 13 existing will compete -> Berserk 13 (email)
4. KomodoDragon - existing Dragon 3.3 will play -> KomodoDragon 3.3 (email)
5. Ethereal - reminder sent - apparently script update per discord -> Ethereal 14.35 -> 14.40 (discord, C5E342AE)
6. Seer - reminder sent - same version submitted for swiss but update expected for next tcec events -> Seer 2.8.0 (discord)
7. RubiChess - RubiChess 20240817 received -> RubiChess 220240506 -> 20240817 (email)
8. Stoofvlees - reminder sent - Stoofvlees II d6 submitted -> Stoofvlees II d5 -> II d6 (email, discord PM)
9. Caissa - updated to 1.20.1 via discord -> Caissa 1.18.7 -> 1.20.1 (discord)
10. Obsidian - reminder sent - update per script submitted -> Obsidian dev-11.24 -> dev-13.11 (discord)
11. rofChade - reminder sent - new update received -> rofChade 3.105 -> 3.110 (email, threads to 102)
12. Viridithas - update per script submitted -> Viridithas 13.0.0-dev-d58331f0 -> 15.0.0-dev-f6ea5980 (email)
13. Igel - engine under development, unclear if update ready in time atm - next update apparently coming by deadline - version Igel 3.5.6 submitted per discord -> Igel 3.5.5 -> 3.5.6 (email, discord PM)
14. Revenge - new version submitted -> Revenge 20240609 -> 20240822 (email)
15. Arasan - update per script submitted -> Arasan 096645a -> 4e7f90a (email)
16. Velvet - version 8.0.0 submitted -> Velvet v8.0.0 officially released -> Velvet 7.3.0 -> 8.0.0 (email early submission)
17. Minic - existing Version 3.41 submitted, update in the making but likely not yet ready -> Minic 3.40 -> 3.41 (email, probably no real update)
18. Uralochka - update promised - update to Uralochka3.42.dev4-avx512 submitted -> Uralochka 3.41.dev4-avx512 -> 3.42.dev4-avx512 (email)
19. Stormphrax - update per script (discord) -> Stormphrax 4.1.16_d07a844 -> 5.0.20_0f8af3f (discord)
20. Ginkgo - update promised - update to Ginkgo 4.31 submitted (TB6) -> Ginkgo 4.12 -> 4.31 (email)
21. DeepSjeng - reminder sent - no update, existing version will play -> DeepSjeng 3.6 a30 (email)
22. BlackMarlin - update per script incoming -> BlackMarlin 9.0-dev-82ace40e -> 9.0-dev-578a6f64 (email)
23. Marvin - reminder sent - no update, existing version will play -> Marvin 6.3.0 (email)
24. Altair - reminder sent - no update, existing version 7.1.5 will play -> Altair 7.0.6 -> 7.1.5 (email)
25. Equisetum - reminder sent - Equisetum v.1.9.arvense received via discord -> Equisetum 1.4_variegatum.i -> 1.9.arvense (discord, bench 9033113)
26. Booot - reminder sent - no reply: existing booot will play late reply with latest repository -> Booot 7.3 (email)
27. Weiss - same version will play -> Weiss 2.1-dev10 (email)
28. Tucano - update per script promised - update to 11.24 plus new net submitted per script -> Tucano 11.17 -> 11.24 (email)
29. akimbo - to be updated by usual script -> akimbo 1.1.0-dev (email)

category 0 - returning engines not directly qualified

1. Wasp - update promised - new Wasp 7.03 submitted -> Wasp 7.01 -> 7.03 (email)
2. Cheng - Cheng 4.48 submitted -> Cheng 4.44_dev -> 4.48 (email)
3. Halogen - was recently updated and updated questionnaire received- update per script acc to discord -> Halogen 11.4.1 -> 12.4.1 (email, discord logo)

all engines category 1 (highest originality priority) to be placed into swiss without prior playoff

1. Texel - reminder sent - script update to version 1.12a5 submitted -> Texel 1.12a4 -> 1.12a5 (email)
2. Winter - updated to version 4.01a -> Winter 3.1415926 -> 4.01a (email)
3. ChessFighter - update mandatory for entrance -> update promised - update received -> ChessFighter 3.17 -> 3.18 (email) -> bugfix received - ChessFighter 3.17 -> 3.18 -> 3.19
4. ice4 - latest version ice4 v5 submitted -> ice4 5 (email)
5. 4ku - debugged 5.1 submitted -> 4ku 5.0 -> 5.1 (email)
6. Patricia - reminder sent - engine received -> Patricia 3.1_dev -> 3.1_dev_d24e8487 (email, discord, +70 Elo) (new, no tb)
7. Ceres - engine promised - engine and net submitted -> Ceres 0.92_69722-vf2 -> 1.0_512x15_NLA (email, logo) (new)
8. Heimdall - Heimdall 1.0-beta to be submitted soon -> received - newer update Heimdall 1.0.0-alpha received before deadline -> Heimdall 1.0.0-beta -> 1.0.0-alpha (email) (new)
9. Princhess - update announced - engine and logo received (uses syzygy) - and another more recent update received -> Princhess 0.18.0-8-gaf4ec4 -> 0.18.0-9-g214a6dc (discord, logo) (new)
10. Integral - reminder sent - engine submitted -> Integral 3 (new) - added because of originality to cat 1 to replace Clover who still has an unfixed timeloss bug - swiss 7 round 1 game to be replayed

new engines category 2 (own data)

1. PlentyChess - engine promised - engine submitted (no TB) -> PlentyChess selfgen-dev -> selfgen-dev_3f195496 (check submission is for own data version, discord logo, email, +18 Elo) (new, no tb)
2. Renegade - engine promised - version 1.1.19 submitted -> Renegade 1.1.19 (email) (new)
3. Reckless - conditional: Multi-threaded initialization is likely necessary to use 98GB RAM without timing out at the start of the game - to be updated by script (no syzygy) - engine submitted -> Reckless 0.7.0 (email) (new)
4. Clarity - engine promised - engine submitted -> Clarity 8.0.0-dev (check submission is for own data version, email) (new)
5. Lizard - version 10.5 received (no syzygy) -> Lizard 10.5 -> 10.5_439e4896 (check submission is for own data version, logo, fix hash init to be fast to avoid interruptions) (new, no tb)
6. Integral - reminder sent - engine submitted -> Integral 3 (new) -> moved to cat 1 after Clover crash

new engines category 3 (leela data)

1. Bagatur - update to 5.1 received -> updated to version 5.1b - is now NNUE engine awaiting new questionnaire questionnaire received -> Bagatur 3.7e -> 5.1b (email)
2. Quanticade - engine promised (no syzygy) - engine submitted -> Quanticade Aurora (clang, email) (new)
3. Devre - engine update per script received -> Devre 6.10 -> 6.12 (email) (new)
4. Spaghet - engine promised via discord - update script submitted -> Spaghet BologNNese_1.1 (discord PM, logo) (new)

new engines category 4 (no questionnaire or failed originality test)

all have been categorized above

other engines, as yet uncategorized

all have been categorized above

Playoff Results

CAT 3 PLAYOFF RESULT: Devre qualifies for Swiss 7

CAT 0+2 PLAYOFF RESULTS: Lizard, PlentyChess, Halogen qualify directly for Swiss 7, and Renegade qualifies after tiebreak

Bugfixes and problems

Bugs (or problems) found during the Swiss:

1. Serendipity - engine promised - engine submitted -> Serendipity v0.4-dev-20240823-2ac92257 (new) (email) - timeloss bug, unfixed
2. Clover - update by discord promised - update script received -> Clover 6.1.23 -> 7.1.10 (discord, update.sh modified) - timeloss bug, replaced after round 1 by Integral

Engines not playing

withdrawn, inactive or not responding

1. Torch unwilling
2. Carp (NNUE, TB, SMP, own data, !bullet trainer) by Andrea Sgobbi: github.com/dede1751/carp inactive
3. Pytteliten (4K engine) by Cristopher Torgrip: github.com/crippa1337/Pytteliten stalled
4. Mr_Bob - no update, skipping season
5. Cheese - no update, skipping season
6. ScorpioNN - no update, skipping season
7. StockDory - needs update and reply to prelimary email sent aug 11 2024 no timely reply received - no update announced
8. Avalanche - development is paused acc to dev
9. Willow - engine retracted in favor of Patricia entering by same dev
10. Expositor - no update: withdraws voluntarily to make place for new engines
11. Counter - update mandatory for entrance - update not yet ready this season
12. Stash - reminder sent - engine withdrawn, in the future hopefully succeeded by the engine Vault by same author

other new and suggested engines (from discord) not contacted - possible entrants for next season

1. Peacekeeper (NNUE, Lc0 data, modified Carbon trainer, SMP, FRC) by Sazgr: github.com/Sazgr/peacekeeper
2. WhiteCore (NNUE, TB, own data?, custom trainer), successor of !BlackCore by Balázs Szilágyi: github.com/SzilBalazs/WhiteCore
3. Superultra (NNUE, Lc0 data, own trainer) by Alexander Liang: github.com/A1exL1ang/Superultra
4. Titan (NNUE, Lc0 data) by Jeff Powell: github.com/jeff-pow/Titan
5. Midnight (NNUE, SMP, !bullet trainer) by Archishmaan Peyyety: github.com/archishou/MidnightChessEngine
6. Motor (github.com/martinnovaak/motor) by Martin Novák

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

Seeding

TCEC Swiss tournaments start with seeding, to prevent the strongest from meeting already in the too early rounds, in order to get a more balanced development of rankings over the rounds. The seedings affect only the pairings in the beginning and are not groups as they would be in leagues. When the tournament is well underway, the seedings play no more a role.

See the page on seeding for procedural details.

Seeds to be done by last leagues standings and/or elo after testing, to the discretion of the organizers, except last winner gets seed 1 (A1):

Seeding list as determined by rules and organizers

1. LCZero (winner of TCEC Swiss 6)
2. Stockfish
3. Berserk
4. KomodoDragon
5. Ethereal
6. Seer
7. Ceres
8. RubiChess
9. Stoofvlees
10. Caissa
11. Obsidian
12. rofChade
13. Viridithas
14. Igel
15. Revenge
16. Arasan
17. Integral
18. Lizard
19. Velvet
20. PlentyChess
21. Minic
22. Uralochka
23. Stormphrax
24. Ginkgo
25. DeepSjeng
26. BlackMarlin
27. Marvin
28. Altair
29. Equisetum
30. Booot
31. Weiss
32. Tucano
33. Halogen
34. Renegade
35. akimbo
36. Texel
37. Winter
38. Devre
39. ChessFighter
40. Patricia
41. Princhess
42. ice4
43. 4ku
44. Heimdall

Seeding groups

Engines are seeded in 10 groups as follows:

Seeding groups

Group A	Group B	Group C	Group D	Group E	Group F	Group G	Group H	Group I	Group J
LCZero	Seer	Obsidian	Arasan	Minic	DeepSjeng	Equisetum	Halogen	Winter	Princhess
Stockfish	Ceres	rofChade	Integral	Uralochka	BlackMarlin	Booot	Renegade	Devre	ice4
Berserk	RubiChess	Viridithas	Lizard	Stormphrax	Marvin	Weiss	akimbo	ChessFighter	4ku
KomodoDragon	Stoofvlees	Igel	Velvet	Ginkgo	Altair	Tucano	Texel	Patricia	Heimdall
Ethereal	Caissa	Revenge	PlentyChess

Seeding order

Seeding order. The first round pairings are: A1-B1, C1-D1, E1-F1, G1-H1, I1-J1, A2-B2, and so on.

1. (A1) LCZero
2. (B1) Seer
3. (C1) Obsidian
4. (D1) Arasan
5. (E1) Minic
6. (F1) DeepSjeng
7. (G1) Equisetum
8. (H1) Halogen
9. (I1) Winter
10. (J1) Princhess
11. (A2) Stockfish
12. (B2) Ceres
13. (C2) rofChade
14. (D2) Integral
15. (E2) Uralochka
16. (F2) BlackMarlin
17. (G2) Booot
18. (H2) Renegade
19. (I2) Devre
20. (J2) ice4
21. (A3) Berserk
22. (B3) RubiChess
23. (C3) Viridithas
24. (D3) Lizard
25. (E3) Stormphrax
26. (F3) Marvin
27. (G3) Weiss
28. (H3) akimbo
29. (I3) ChessFighter
30. (J3) 4ku
31. (A4) KomodoDragon
32. (B4) Stoofvlees
33. (C4) Igel
34. (D4) Velvet
35. (E4) Ginkgo
36. (F4) Altair
37. (G4) Tucano
38. (H4) Texel
39. (I4) Patricia
40. (J4) Heimdall
41. (A5) Ethereal
42. (B5) Caissa
43. (C5) Revenge
44. (D5) PlentyChess

Swiss 7 results

..

Swiss Opening Book

The book for Swiss 7 was created by Bastiaan (kbg519v1a). The lines are all quite short, at most seven moves, familiar from human master play, and with high bias always favouring white. The lines 21 and 22 in each block of 22 lines (one round) are the same and line 20 in each block is similar to the common line 21+22.

Promotions

Cup 14

Top 32 promote to Cup 14.

Entrance League

15 non-qualified engines are fighting for 8 qualification spots to Entrance League.

The 15 are: 4ku, Ceres, ChessFighter, Devre, Halogen, Heimdall, ice4, Integral, Lizard, Patricia, PlentyChess, Princhess, Renegade, Texel, Winter

Trivia

Polls

1. Which in Swiss 7 do you like the most?
2. Which in Swiss 7 have the best logos?
3. Best rookies of Swiss?
4. Which will be the top five engines in Swiss 7?
5. Which eight promotes from Swiss 7 to Entrance League?
6. Which 32 in Swiss 7 will qualify for Cup 14?

Whales & Heroes

Whales

Season 27 Swiss 7: Ove__(6)🏆 kittenkaboodle(2) computerschach mrbdzz 1coghoti(2) bequral(2) RobbyRobbyRob masa142857 ⭐ Game 70

Heroes

Ove__ bequral ⭐ Game 69