Scratch Chess Engine - Game of Kings

coooolboy55

Cool position I found when playing Stockfish against scratch chess bots. rnbq1rk1/ppp2p1p/3p2p1/8/2B1N3/5N2/PbPQ2P1/R3K2R b KQ - 1 9
Black to move. The bot went Ba1, which results in mate-in-6.

ArnoHu

ArnoHu wrote:
ArnoHu wrote:
ArnoHu wrote:
ArnoHu wrote:
ArnoHu wrote:
ArnoHu wrote:
GoK Classic vs. Wolverine 2, 94% vs. 88%:
https://lichess.org/study/owu9JlSd/FJaNkCuO

GoK Classic vs. Wolverine 2, 87% vs. 85%:
https://lichess.org/study/owu9JlSd/MlgJ9fJL

GoK NNUE vs. Black Crow, 93% vs. 86%:
https://lichess.org/study/owu9JlSd/BxCtMfBt

GoK Classic vs. Wolverine 2, 93% vs. 86%:
https://lichess.org/study/owu9JlSd/WRM9Acxf

GoK NNUE vs. Black Crow, 92% vs. 88%:
https://lichess.org/study/owu9JlSd/4PyIlAsZ

This is certainly a pinnacle point for Scratch HCE engines (at 5sec think time):

GoK Classic vs. White Dove, 99% vs. 99%:
https://lichess.org/study/owu9JlSd/3I15lM22

GoK NNUE vs. Black Crow, 94% vs. 89%:
https://lichess.org/study/owu9JlSd/zNmeWci6

GoK Classic vs. Wolverine 2, 90% vs. 86% (alternate endgame):
https://lichess.org/study/owu9JlSd/QJYZ4Bjw

GoK Classic vs. Wolverine 2, 93% vs. 90% (king shelter eval bugfix):
https://lichess.org/study/owu9JlSd/SX0LS842

Tough GoK Classic vs. Wolverine 2 match ends in a draw, 90% vs. 91%:
https://lichess.org/study/owu9JlSd/JhHWzFzz

GoK NNUE vs. Black Crow, 94% vs. 93%:
https://lichess.org/study/owu9JlSd/WRi8i6Hv

GoK Classic vs. Wolverine 2, 89% vs. 90%:
https://lichess.org/study/owu9JlSd/CcWC9aoV

GoK Classic vs. Wolverine 2, 90% vs. 91%:
https://lichess.org/study/auQC6T2K/UFTkmzkA

GoK NNUE vs. Black Crow, 96% vs. 92%:
https://lichess.org/study/auQC6T2K/xcIaf5WD

GoK Classic vs. Wolverine 2, 94% vs. 91%:
https://lichess.org/study/auQC6T2K/9kRxE1y8

A pretty close game:

GoK Classic vs. Wolverine 2, 89% vs. 86%:
https://lichess.org/study/auQC6T2K/Mbudn0ty

GoK NNUE vs. Black Crow, 97% vs. 91%:
https://lichess.org/study/auQC6T2K/Fknmp25I

GoK Classic vs. White Dove, 93% vs. 92%:
https://lichess.org/study/auQC6T2K/HXPUo6Tc

GoK Classic vs. White Dove, 91% vs. 93%:
https://lichess.org/study/auQC6T2K/CrC5x40Z

Last edited by ArnoHu (Nov. 6, 2025 22:10:15)

Destructor_chess

coooolboy55 wrote:
Cool position I found when playing Stockfish against scratch chess bots. rnbq1rk1/ppp2p1p/3p2p1/8/2B1N3/5N2/PbPQ2P1/R3K2R b KQ - 1 9
Black to move. The bot went Ba1, which results in mate-in-6.

I ́ll check on tk4

ArnoHu

GoK Classic vs. White Dove, 95% vs. 89%:
https://lichess.org/study/auQC6T2K/fRlP8tLg

GoK NNUE vs. Black Crow, 97% vs. 94%:
https://lichess.org/study/auQC6T2K/rs7vbqy6

GoK Classic vs. Wolverine 2, 91% vs. 92%:
https://lichess.org/study/auQC6T2K/Drydyfh9

GoK Classic vs. Wolverine 2, 94% vs. 89%:
https://lichess.org/study/auQC6T2K/pOavSTjY

GoK Classic vs. TurboKnight, 96% vs. 91%:
https://lichess.org/study/auQC6T2K/m6GPhbEc

Last edited by ArnoHu (Yesterday 00:50:39)

HasiLover

Running Round 3 in half an hour! https://lichess.org/broadcast/supersonic-scratch-2025/round-3/QvJbxss9

HasiLover

Starting Round 3: https://lichess.org/broadcast/supersonic-scratch-2025/round-3/QvJbxss9

HasiLover

Congrats to @S_P_A_R_T

Last edited by HasiLover (Yesterday 01:15:30)

S_P_A_R_T_Test

HasiLover wrote:
Super Sonic Scratch 2025 Results:
#1 - Black Crow - https://scratch.mit.edu/projects/858052938
#2 - Game of Kings NNUE
#3 - TurboKnight 4 https://scratch.mit.edu/projects/1205819338 and White Dove https://scratch.mit.edu/projects/858052938
#4 - Wolverine 2 https://scratch.mit.edu/projects/1202302970
#5 - Element https://scratch.mit.edu/projects/879234783
#6 - Amarillo 2 https://scratch.mit.edu/projects/1155850356
#7 - Shallow Blue 3 https://scratch.mit.edu/projects/1193825236
#8 - Delta 4 https://scratch.mit.edu/projects/1053196084
#9 - Game of Kings Classic https://scratch.mit.edu/projects/828094886

This is one of the first times, that GoK didn't win the tournament!
Congrats to @S_P_A_R_T

Thanks for conducting this tournament! It was a lot of fun to watch and spectate live with others.

(And of course I'm also quite pleased with WD + BC's performance

)

ArnoHu

HasiLover wrote:
Super Sonic Scratch 2025 Results:
#1 - Black Crow - https://scratch.mit.edu/projects/858052938
#2 - Game of Kings NNUE
#3 - TurboKnight 4 https://scratch.mit.edu/projects/1205819338 and White Dove https://scratch.mit.edu/projects/858052938
#4 - Wolverine 2 https://scratch.mit.edu/projects/1202302970
#5 - Element https://scratch.mit.edu/projects/879234783
#6 - Amarillo 2 https://scratch.mit.edu/projects/1155850356
#7 - Shallow Blue 3 https://scratch.mit.edu/projects/1193825236
#8 - Delta 4 https://scratch.mit.edu/projects/1053196084
#9 - Game of Kings Classic https://scratch.mit.edu/projects/828094886

This is one of the first times, that GoK didn't win the tournament!
Congrats to @S_P_A_R_T

Thanks for the tournament. Not really the first time… https://scratch.mit.edu/studios/1576166/comments/#comments-29289506

Well-deserved results for these excellent chess projects. I was positively surprised about GoK NNUE's results. 500ms or 250ms think time (final rounds) on a slow system is a challenge for engines which both have heavy evaluation logic and depend on advanced pruning to kick in and compensate (requires a certain search depth). Both GoK's did not run in their low-profile mode, as it is bound to the TurboWarp detection block.

Last edited by ArnoHu (Yesterday 06:15:07)

ArnoHu

ArnoHu wrote:
GoK Classic vs. White Dove, 95% vs. 89%:
https://lichess.org/study/auQC6T2K/fRlP8tLg

GoK NNUE vs. Black Crow, 97% vs. 94%:
https://lichess.org/study/auQC6T2K/rs7vbqy6

GoK Classic vs. Wolverine 2, 91% vs. 92%:
https://lichess.org/study/auQC6T2K/Drydyfh9

GoK Classic vs. Wolverine 2, 94% vs. 89%:
https://lichess.org/study/auQC6T2K/pOavSTjY

GoK Classic vs. TurboKnight, 96% vs. 91%:
https://lichess.org/study/auQC6T2K/m6GPhbEc

GoK NNUE vs. Black Crow, 96% vs. 91%:
https://lichess.org/study/auQC6T2K/yFDBDPd0

GoK Classic vs. TurboKnight, 84% vs. 53% (short game, where TK overlooked the mate threat):
https://lichess.org/study/auQC6T2K/eEU5n2f3

Last edited by ArnoHu (Yesterday 08:29:16)

Destructor_chess

ArnoHu wrote:
ArnoHu wrote:
GoK Classic vs. White Dove, 95% vs. 89%:
https://lichess.org/study/auQC6T2K/fRlP8tLg

GoK NNUE vs. Black Crow, 97% vs. 94%:
https://lichess.org/study/auQC6T2K/rs7vbqy6

GoK Classic vs. Wolverine 2, 91% vs. 92%:
https://lichess.org/study/auQC6T2K/Drydyfh9

GoK Classic vs. Wolverine 2, 94% vs. 89%:
https://lichess.org/study/auQC6T2K/pOavSTjY

GoK Classic vs. TurboKnight, 96% vs. 91%:
https://lichess.org/study/auQC6T2K/m6GPhbEc

GoK NNUE vs. Black Crow, 96% vs. 91%:
https://lichess.org/study/auQC6T2K/yFDBDPd0

GoK Classic vs. TurboKnight, 84% vs. 53% (short game, where TK overlooked the mate threat):
https://lichess.org/study/auQC6T2K/eEU5n2f3

Crazy game xD

Destructor_chess

coooolboy55 wrote:
Cool position I found when playing Stockfish against scratch chess bots. rnbq1rk1/ppp2p1p/3p2p1/8/2B1N3/5N2/PbPQ2P1/R3K2R b KQ - 1 9
Black to move. The bot went Ba1, which results in mate-in-6.

TK4 blunders too, but not this one.

ArnoHu

ArnoHu wrote:
ArnoHu wrote:
GoK Classic vs. White Dove, 95% vs. 89%:
https://lichess.org/study/auQC6T2K/fRlP8tLg

GoK NNUE vs. Black Crow, 97% vs. 94%:
https://lichess.org/study/auQC6T2K/rs7vbqy6

GoK Classic vs. Wolverine 2, 91% vs. 92%:
https://lichess.org/study/auQC6T2K/Drydyfh9

GoK Classic vs. Wolverine 2, 94% vs. 89%:
https://lichess.org/study/auQC6T2K/pOavSTjY

GoK Classic vs. TurboKnight, 96% vs. 91%:
https://lichess.org/study/auQC6T2K/m6GPhbEc

GoK NNUE vs. Black Crow, 96% vs. 91%:
https://lichess.org/study/auQC6T2K/yFDBDPd0

GoK Classic vs. TurboKnight, 84% vs. 53% (short game, where TK overlooked the mate threat):
https://lichess.org/study/auQC6T2K/eEU5n2f3

GoK NNUE vs. Black Crow, 99% vs. 89% (rare BC blunder):
https://lichess.org/study/auQC6T2K/ZMtvF5Gm

GoK Classic vs. Wolverine 2, 86% vs. 87%:
https://lichess.org/study/auQC6T2K/x0IW47qm

GoK Classic vs. White Dove, 93% vs. 93%:
https://lichess.org/study/auQC6T2K/JVJcmz7b

— GoK Classic threats eval bugfix happened here —

GoK Classic vs. White Dove, 94% vs. 91%:
https://lichess.org/study/auQC6T2K/bS1fau6l

GoK Classic vs. Wolverine 2, 96% vs. 91%:
https://lichess.org/study/auQC6T2K/ObOMlB8X

GoK Classic vs. TurboKnight, 92% vs. 86%:
https://lichess.org/study/auQC6T2K/jVeRnMob

GoK Classic vs. Delta, 95% vs. 90%:
https://lichess.org/study/auQC6T2K/jVeRnMob

GoK Classic vs. Shallow Blue 3 Dev, 83% vs. 84% (GoK mistake due to over-evaluating pawn shelter, fixed):
https://lichess.org/study/auQC6T2K/uZ0I6PRU

GoK Classic vs. Shallow Blue 3 Dev, 90% vs. 85% (opening replay):
https://lichess.org/study/auQC6T2K/4Ha1GWMP

GoK Classic vs. TurboKnight, 95% vs. 85%:
https://lichess.org/study/auQC6T2K/xRgsDUR6

GoK Classic vs. Wolverine 2, 91% vs. 85%:
https://lichess.org/study/auQC6T2K/whu1iVws

GoK Classic vs. Black Crow, 85% vs. 89%:
https://lichess.org/study/auQC6T2K/EdXj70pB

GoK Classic vs. TurboKnight, 90% vs. 89%:
https://lichess.org/study/auQC6T2K/DDV7TIqR

— New GoK Classic version —

GoK Classic vs. Wolverine 2, 95% vs. 90%:
https://lichess.org/study/auQC6T2K/FTNpv2av

GoK NNUE vs. Black Crow, 97% vs. 92%:
https://lichess.org/study/auQC6T2K/CtnRrSjb

Last edited by ArnoHu (Today 19:45:45)

Discuss Scratch