Beauty contest

Discussion of anything and everything relating to chess playing software and machines.

Moderator: Ras

jefk
Posts: 1025
Joined: Sun Jul 25, 2010 10:07 pm
Location: the Netherlands
Full name: Jef Kaan

Re: Beauty contest

Post by jefk »

game nr 11,
an interesting wing gambit (transposing to Sicilian wing gambit) with a novelty at move 10.
this time again vs a Fide master level engine (Rodin), and ofcourse again with P5 :!:
and arguably :shock: a better fifth move than what Carlsen played two years ago in blitz)

[pgn]
[Event "Computer Chess Game"]
[Date "2025.09.12"]
[White "Patricia 5.0"]
[Black "Rodin v8.00"]
[Result "1-0"]
[Annotator "EAS-Tool: 3 PawnUnits Sacrifice found"]
[ECO "B40"]
[PlyCount "75"]
[GameId "2221636118028583"]
[EventDate "2025.??.??"]
[TimeControl "240+2"]

1. Nf3 c5 2. b4!! cxb4 3. a3 e6 4. e4 Nc6 5. d4! ({Relevant:} 5. axb4 Bxb4 6. c3 Be7 7. d4 d5 8. e5 Nh6 9. Bd3 Nf5 10. O-O O-O 11. Nbd2 a5 12. g4 Nh4 13. Nxh4 Bxh4 14. f4 Be7 15. Nf3 f5 {1-0 Carlsen,M (2839)-Oparin,G (2681) Titled Tuesday intern op 26th Sep Late Chess.com INT blitz 2023 (5)}) 5... bxa3 (5... d5 $11 6. exd5 exd5 (6... Qxd5 7. Be2 $11)) 6. d5 $1 $14 Qf6 {[#]} 7. Rxa3 $146 ({Predecessor:} 7. c3 Ne5 8. Be2 ({White should try} 8. Nxa3 $14 a6 9. Nd4) 8... Nxf3+ 9. Bxf3 Bc5 10. O-O Ne7 11. Bxa3 Bxa3 12. Nxa3 O-O 13. c4 e5 (13... d6 $11) 14. d6 (14. Nb5 $16) 14... Nc6 $11 15. Nb5 a6 (15... b6 $1 $11 {keeps the balance.}) 16. c5 {1-0 Bambino Filho,A (2168)-Decker,T (2300) Titled Tuesday intern op 23rd Jul Early Chess.com INT blitz 2024 (5)}) 7... Bxa3 (7... exd5 $14 8. exd5 Bxa3 9. Bxa3 Nce7) 8. Nxa3 $16 {White is better.} Qc3+ (8... exd5 $142 9. Nb5 Qe7 10. Nc7+ (10. Qxd5 Nf6 $17) 10... Kf8) 9. Nd2 Nb4 10. Be2 {Loses the game.} exd5 $2 (10... a6 $16) 11. Nb5 $18 Qc6 12. exd5 Nxd5 (12... Nxc2+ 13. Kf1 Qg6 14. Nc4 (14. Nc7+ Kd8 $18)) 13. O-O Nge7 {[#]} (13... a6 $142) 14. Ba3 $1 (14. c4 Nc7 $14) 14... O-O {[#] Threatens to win with ...Nd5-f4!.} (14... Nc3 15. Qe1 O-O (15... Nxb5 $2 16. Bxb5 Qe6 17. Nc4 $18) 16. Nxc3 (16. Bxe7 Nxb5 {Discovered Attack} 17. Bxf8 Kxf8 $15) 16... Qxc3 17. Bxe7 $16) 15. c4 $1 d6 (15... Nf4 16. Bf3 $18) 16. cxd5 Nxd5 17. Ne4 (17. Bxd6 Nc3 18. Nxc3 Qxd6 $15) 17... Nf4 18. Nbxd6 (18. Qxd6 $2 {perishes.} Nxe2+ 19. Kh1 Qxd6 20. Nexd6 Bd7 $19) 18... Nxe2+ 19. Qxe2 Be6 {Black is weak on the dark squares} 20. Rc1 Qd5 21. Bb2 Rad8 {[#]} (21... f6 $142 22. Rc5 Qa2) 22. Nf6+ $1!! gxf6 23. Ne4 Kg7 24. Nxf6 Qf5 25. g4 Qxf6 26. Bxf6+ Kxf6 27. f4 {aiming for Qe2-e5+.} Kg7 28. Qe5+ {White is clearly winning.} Kg8 29. Qg5+ Kh8 30. Qf6+ Kg8 31. Rc5 Rd1+ 32. Kf2 Rfd8 33. f5 ({Less strong is} 33. Rg5+ Kf8 $16) 33... R1d2+ 34. Kg3 Ba2 35. Qg5+ Kh8 36. h3 {f5-f6 would kill now.} f6 37. Qxf6+ Kg8 {Weighted Error Value: White=0.02 (flawless) /Black=0.52} 38. Qg5+ 1-0
[/pgn]

Move 22 is a typical Patricia move, but then such a move was only possible after prepared
in a positional way and an attacking style, with the bishop on b2 paving the way.
jefk
Posts: 1025
Joined: Sun Jul 25, 2010 10:07 pm
Location: the Netherlands
Full name: Jef Kaan

Re: Beauty contest

Post by jefk »

game nr 12
playing with the- not so well known- Neumann gambit, after the German player Gustav Neumann (1838-1881)
with a novelty at move 9
https://en.wikipedia.org/wiki/Gustav_Neumann

[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.09.14"]
[Round "3"]
[White "Rebel-Extreme-1.1"]
[Black "Rodin v8.00"]
[Result "1-0"]
[Annotator "EAS-Tool: 5+ PawnUnits Sacrifice found in thi"]
[ECO "C55"]
[PlyCount "65"]
[GameId "2222261654675567"]
[EventDate "2025.??.??"]
[TimeControl "240+2"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. c3!! Nxe4 5. O-O! ({Relevant:} 5. d4 exd4 6. O-O d5 7. Bb5 Bd6 8. Nxd4 Bd7 9. Bxc6 bxc6 10. f3 Qh4 11. g3 Nxg3 12. Qe1+ Kf8 13. hxg3 Bxg3 14. Qe2 Re8 {1-0 Nakamura,H (2794)-Yoo,C (2599) Bullet Chess Winners Chess.com INT blitz 2024 (1.17)}) 5... Be7 6. Bd5 $1 Nf6 7. Bxc6 dxc6 8. Nxe5 {Black is slightly better.} O-O {[#]} 9. h3!! $146 ({Voorganger:} 9. d4 c5 10. Be3 cxd4 11. cxd4 Nd5 12. Nc3 Be6 13. Qe2 Re8 14. f4 $2 (14. h3 $17) 14... f6 $1 $19 15. f5 (15. Nxd5 {keeps fighting.} Bxd5 16. Nd3) 15... Nxe3 $19 16. Qxe3 fxe5 17. dxe5 Bc4 18. Rad1 Bd6 19. Rf4 Rxe5 20. Qxe5 Bxe5 21. Rxd8+ Rxd8 22. Rxc4 Rd2 23. Re4 Bd4+ $1 24. Kf1 Kf7 {0-1 Pennica,A (1986)-Aradhya,G (2229) Piestany Slovakia op-A 2022 (4)}) 9... Be6 10. Re1 Re8 11. d4 c5 12. Bf4 cxd4 13. cxd4 c6 14. Nc3 Qb6 15. Qd2 Rad8 16. Nf3 h6 (16... Nd5 {simplifies} 17. Bg5 Qc7 18. Re5 Nxc3 19. Bxe7 Rxe7 20. Qxc3 f6) 17. Bxh6 gxh6 18. Rxe6 $1 fxe6 19. Qxh6 $40 {White is up to no good.} Nh7 $2 (19... Qxb2 $11 {and Black has nothing to worry.} 20. Qg6+ Kh8) 20. Ne5 $1 $18 Nf8 {[#] Prevents Qh6-g6+} (20... Qxb2 21. Qg6+ Kh8 22. Nf7#) 21. Re1 $1 Rxd4 (21... Qxd4 22. Re4 $18) 22. Re3 Bh4 {Against Re3-g3+} (22... Qxb2 23. Rg3+) 23. Ne4 {Excellent horsemanship.} Qd8 $2 ({Avoid the trap} 23... Rxe4 $2 24. Rxe4 Qxf2+ 25. Kh1 $18) (23... Rd1+ 24. Kh2 Qc7 (24... Qxb2 25. Nf6+ {Deflection} Bxf6 26. Rg3+) 25. Qxh4 Qxe5+ 26. Rg3+ Ng6 (26... Kf7 $2 27. Ng5+ Kg8 28. Nf3+ $18)) 24. g3 {White is clearly winning.} Be7 25. Qh5 c5 26. Kh2 a6 {[#]} 27. Rf3 $1 {Threatening mate with Ne5-f7.} Rxe4 {[#]} 28. Nf7 {Prevents Re4xe5.} Qd4 {Prevents Qh5-h8+} 29. Nh6+ {Discovered Attack} Kg7 {Hoping for ...Be7-f6!.} 30. Rf7+ (30. Qxe8 $2 {is the wrong capture.} Kxh6 31. Qxe7 Ng6 $19) 30... Kh8 31. Nf5+ {Discovered Attack (Check), Double Attack} Kg8 32. Nxd4 Re5 {Weighted Error Value: White=0.01 (flawless) /Black=0.53} 33. Qxe5 1-0
[/pgn]

mr Gustav N. spent the last years of his life in a psychiatric institution, similar as Morphy, Steinitz, Akiba Rubinstein and a
few other chess masters in the past, eg. Planinc, Weinstein, Mikenas, Schiffer (not counting those who committed suicide
at a relatively young age). So a warning maybe, play such gambits at your own risk, unless your Nakamura or Carlsen ?
:mrgreen:
https://www.chess.com/blog/nbrasington/ ... al-illness
jefk
Posts: 1025
Joined: Sun Jul 25, 2010 10:07 pm
Location: the Netherlands
Full name: Jef Kaan

Re: Beauty contest

Post by jefk »

game nr 13

With a -rare- gambit in the Clemenz opening (1.h3) after Estonian master Hermann Clemenz (1848-1908)
https://en.wikipedia.org/wiki/Hermann_Clemenz

[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.09.13"]
[Round "1"]
[White "Patricia 5.0"]
[Black "KnightX 4.5"]
[Result "1-0"]
[Annotator "EAS-Tool: 5+ PawnUnits Sacrifice found in thi"]
[ECO "C20"]
[PlyCount "94"]
[GameId "2222273029878220"]
[EventDate "2025.??.??"]
[TimeControl "240+2"]

{C20: 1 e4 e5: Unusual White second moves} 1. h3!? e5 2. e4 Nf6 3. d4! {[#]} ({Relevant:} 3. Nc3 Nc6 4. Nf3 Bb4 5. a3 Bxc3 6. dxc3 d6 7. Bd3 O-O 8. Qe2 Qe7 9. Bg5 Nd8 10. Nh4 h6 11. Bd2 Ne6 12. Nf5 Qd8 13. O-O-O Nc5 14. g4 Bxf5 15. gxf5 d5 16. Rhg1 Kh7 17. Qe3 Nxd3+ 18. cxd3 Rg8 19. Rg2 Qd6 20. Rdg1 Kh8 21. exd5 Nxd5 22. Qe4 Nf4 23. Bxf4 exf4 24. Rg4 Rae8 25. Qf3 c6 26. Rxf4 Qf6 27. Re4 Rd8 28. d4 Rd5 29. Rf4 Rgd8 30. Kb1 b5 31. Re1 a5 32. Ree4 b4 {1-0 Carlsen,M (2833)-Aravindh,C (2731) Titled Tuesday intern op 25th Mar Early Chess.com INT blitz 2025 (5)}) 3... Nxe4 $146 ({Predecessor:} 3... Ng8? $2 4. dxe5 {0-1 Bardis,H (1797)-Katopodis,D (2169) Athens Iraklion op 20th 2017 (8) and White is clearly better, although a known game ended with a win for Black}) 4. Be3 Qe7 5. Nf3 exd4 6. Nxd4 d5 7. Bd3 Ng3 {Deflection} (7... c5 {simplifies} 8. Ne2 Nf6 9. c3 Qc7) 8. Nc3 Nxh1 $19 9. Nxd5 Qe5 (9... Nxf2 10. Kxf2 Qe5 11. Bb5+ c6 12. Nf3 $11) 10. Bb5+ c6 ({Black should try} 10... Bd7 $1 $17 11. Nf3 Qd6 (11... Qxb2 12. Bxd7+ Nxd7 13. Rb1 $14)) 11. Nf3 $11 Qd6 (11... Qxb2 12. Nc7+ Ke7 13. Bc5+ (13. Nxa8 Qxb5 14. Qd4 Nd7 $11) 13... Kf6 14. Qd8+ (14. Nxa8 $2 Bxc5 15. Be2 Nxf2 $19) (14. Bd4+ Qxd4 15. Qxd4+ Ke7 $18)) (11... Bb4+ $11 12. Kf1 Nxf2 (12... Qxb2 $2 13. Bc1 $18) 13. Kxf2 Qd6 (13... Qxb2 14. Bd4 $16)) 12. Bf4 $1 $16 {White has strong compensation.} Qe6+ 13. Kf1 {Active counter play!} {Loses the game.} Bd6 (13... cxb5 $2 14. Nc7+ Ke7 15. Nxe6 (15. Nxa8 Na6 $11) 15... Bxe6 16. Qd6+ (16. Kg1 Nxf2 17. Qe1 {Trapped Piece} Nxh3+ 18. gxh3 Ke8 $18) 16... Ke8 17. Qc7 $18) (13... Na6 $16 14. Ng5 Qf5 {Pin} (14... Nxf2 15. Qd4 $14)) 14. Ng5 $18 Qf5 15. g4 (15. Bxd6 $2 Qxf2#) 15... Qg6 16. Bd3 Qh6 17. Qf3 (17. Qe2+ Be6 18. Nxe6 (18. Bxd6 cxd5 19. Nxe6 Qxe6 $17) 18... Qxe6 $17) 17... cxd5 $2 {[#]} (17... O-O {is a better defense.}) 18. Re1+ $1 {White is clearly winning.} Be7 19. Nxf7 {Discovered Attack, Double Attack} Qf6 20. Nd6+ ({And not} 20. Nxh8 g5 21. Qxh1 (21. Rxe7+ Qxe7 22. Bxb8 Rxb8 $19) 21... gxf4 $11) 20... Kd8 21. Nxc8 (21. Qxh1 $2 {perishes.} Bxd6 (21... Qxf4 $2 22. Nb5 $19) 22. Be3 d4 $19 (22... Qxb2 $2 23. Qxd5 Kc7 24. Bd4 $19)) 21... Kxc8 22. Bf5+ {A strong pair of Bishops.} Kd8 23. Qxd5+ Ke8 24. Re6 {Repels Nb8-c6} Qh4 25. Qxh1 Nc6 26. Bg3 Qg5 {[#] And now ...Ra8-d8 would win.} 27. f4 $1 Qf6 28. Rxf6 Bxf6 {Black is weak on the light squares} 29. Qe4+ Be7 30. Bxh7 Rd8 31. Bg6+ Kd7 32. f5 Bd6 33. Bxd6 Kxd6 34. Qf4+ Ke7 35. g5 Rd6 36. h4 Kd7 37. h5 Ne7 38. Qe5 Rc8 39. f6 gxf6 40. gxf6 Nc6 41. Bf5+ Kc7 42. Qg3 Rb8 43. c4 Nd4 44. Bh3 Ne2 45. Qe5 Ng3+ 46. Qxg3 {Intending c4-c5 and mate.} Rg8 47. Qxg8 {Weighted Error Value: White=0.04 (flawless) /Black=0.52} Rxf6+ 1-0
[/pgn]

although imo slightly worse than 1.a3!, the move 1.h3!? is playable and prevents Bg4 (pin) in some variations.
The variation in above game 1.h3 e5 2.e4 Nf6 3.d4 is the [Clemenz, Mead Opening]Djengis gambit 76.

Obviously Clemenz also played other openings as can be seen in this shortie against (relatively unknown) Eisenschmidt
jefk
Posts: 1025
Joined: Sun Jul 25, 2010 10:07 pm
Location: the Netherlands
Full name: Jef Kaan

Re: Beauty contest

Post by jefk »

game nr 14
with a Black gambit for a change again, now an improved Benko gambit (with 5...e6!).
Rodin (Fide master level) tries a counter gambit 7.e4?!, first played by Steven Taylor (2230)
in 2001 but i don't think it's a good gambit, and thus not included in 'my' list of gambits.

Nevertheless an interesting game also because P5 makes some strong sacrifices to win

[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.09.15"]
[Round "102"]
[White "Rodin v8.00"]
[Black "Rebel-Extreme-1.1"]
[Result "0-1"]
[Annotator "EAS-Tool: 4 PawnUnits Sacrifice found in this"]
[ECO "A58"]
[PlyCount "70"]
[GameId "2222275672183443"]
[EventDate "2025.??.??"]
[TimeControl "240+2"]

{A58: Benko/Volga Gambit: Lines with 5 bxa6} 1. d4 Nf6 2. c4 c5 $1 (2... g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Bb5+ Nc6 9. O-O O-O {½-½ Aghasiyev,K (2441)-Atakhan,A (2412) Titled Tuesday intern op 06th Aug Early Chess.com INT blitz 2024 (11)}) (2... d6 3. Nf3 Nbd7 4. Nc3 e5 5. e4 g6 6. Be2 Bg7 7. O-O O-O 8. Re1 c6 9. d5 c5 {0-1 Sargissian,G (2711)-Sosa,T (2548) Santiago de Compostela Bicapawn GP B3 blitz 2022 (6)}) (2... e6 3. Nf3 (3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 h6 7. Bh4 c5 8. dxc5 Nc6 9. a3 {0-1 Cai,R-Sun,Y (2087) CHN-chB Qiziwan 2023 (2)}) 3... d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O {½-½ Thybo,J (2539)-Dragnev,V (2586) Bundesliga 2324 Germany 2023 (15.5)}) 3. d5 b5!! {Benko gambit} 4. cxb5 a6 5. bxa6 e6 $1 {More common is 5...g6 or 5...Bxa6} 6. dxe6 fxe6 {[#]} 7. e4 $6 {a countergambit (Rodin, with book learning, quite often plays counter gambits, having learned this from earlier games from the opponent, and with unsuccessfull experience with normal play against the gambit - simply because P5 is stronger)} Nxe4 $15 {[#]} 8. Nf3 $146 {Black is slightly better.} ({Predecessor:} 8. Bd3 Nf6 9. Nf3 Bxa6 10. O-O Be7 11. Re1 O-O 12. Nc3 Nc6 13. Bxa6 Rxa6 14. Bg5 h6 {0-1 Nemec,J (2402)-Czerw,D (2396) Marianske Lazne GM-A1 20th 2022 (2)}) 8... Be7 9. Bd3 Nf6 10. a7 Nc6 11. O-O Rxa7 12. Nc3 O-O 13. Nb5 Rb7 14. Re1 d5 15. a4 c4 16. Bc2 Bc5 17. Be3 Bxe3 18. Rxe3 Ng4! {This costs White the game.} 19. Re1 {[#]} (19. Rc3 $15) 19... Rbf7 $1 $19 {...Rf7xf3! would now be deadly.} 20. h3 $2 {[#]} (20. Ra3 {is a better defense.} e5 21. h3) 20... Nxf2 $1 {Decoy} 21. Kxf2 {[#]} Qh4+ $1 (21... e5 22. Ra3 $11) 22. Kf1 {[#]} ({Inferior is} 22. Kg1 Rxf3 23. Qd2 Qf2+ 24. Qxf2 Rxf2) 22... Rxf3+ 23. gxf3 d4 24. Kg2 (24. Be4 $142 Qxh3+ 25. Kf2 Qh2+ 26. Kf1) 24... e5 25. Rh1 Qg5+ 26. Kh2 Qf4+ 27. Kg2 Qg5+ 28. Kf2 (28. Kh2 $142 Bxh3 29. Qg1 (29. Kxh3 {leads to mate.} Rf6 30. Bxh7+ Kf8) 29... Qd2+ 30. Kg3 (30. Kxh3 Rxf3+ $19) 30... Qxc2 31. Rxh3) 28... Qe3+ 29. Kg2 d3 30. Bb1 Qg5+ 31. Kh2 Qf4+ 32. Kg2 e4 33. Rh2 Ne5 {Black mates.} (33... Qxf3+ 34. Qxf3 exf3+ 35. Kg3 $18) 34. Bxd3 exd3 35. Nd4 {Weighted Error Value: White=0.72/Black=0.05 (flawless)} Qxd4 0-1
[/pgn]

The (Black) Benko gambit remains playable, even in this computer age.
https://en.wikipedia.org/wiki/Pal_Benko
In my database, 5...g6 is played 14287 times (Carlsen, Kasparov, Kramnik, Anand)
the move 5...Bxa6 was played 12073 times (Nakamura, Andreikin, Xiong, Berkes)
and 5...e6! only 956 times (Dubov, Cheparinov, Nispeanu, Shevchenko)
jefk
Posts: 1025
Joined: Sun Jul 25, 2010 10:07 pm
Location: the Netherlands
Full name: Jef Kaan

Re: Beauty contest

Post by jefk »

game nr 15
Another Sicilian wing gambit, but this time declined. What do you do in such a situation ?
Indeed, simply throw in another gambit! :D This time in Kings gambit style (with 4.f4!).
An older game with P4 instead of P5, nevertheless a win against the -GM level- Crafty engine.

[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2024.12.31"]
[Round "29"]
[White "Patricia 4.0"]
[Black "Crafty-25.6 JA"]
[Result "1-0"]
[Annotator "IWS-Tool: 5+ PawnUnits Sacrifice"]
[ECO "B20"]
[PlyCount "131"]
[GameId "2222388168995233"]
[EventDate "2024.??.??"]
[TimeControl "300+2"]

{B20: Sicilian: Unusual White 2nd moves} 1. e4 c5 2. a3 {Mengarini} Nc6 $146 ({Relevant:} 2... g6 3. b4 (3. Nf3 Bg7 4. c3 d5 5. exd5 Qxd5 6. Bb5+ Bd7 7. Bxd7+ Nxd7 8. O-O Ngf6 9. d4 O-O {0-1 Zurba,J-Norris,A (1917) Cambridge op 2023 (2)}) 3... Bg7 4. Nc3 (4. c3 b6 5. f4 Bb7 6. Qc2 d5 7. e5 Nc6 8. Nf3 Nh6 9. Be2 Rc8 10. bxc5 bxc5 {0-1 Guseva,L (1956)-Siritsa,D (2287) Kimry-ch 2015 (2)}) 4... d6 5. h4 h5 6. Rb1 cxb4 7. axb4 Nf6 8. d4 O-O {0-1 Mamedyarov,S (2723)-Mamedov,R (2651) Gashimov Memorial Blitz 9th Baku 2023 (16)}) 3. b4 $1 e5 4. f4 $3 exf4 5. Nf3 cxb4 6. d4 g5 7. Bc4 {[#]} g4 $146 ({Predecessor:} 7... h6 {7...g5-g4 -1.43} 8. axb4 Bg7 9. c3 Nf6 (9... Nge7 $15) 10. b5 (10. e5 $14) 10... Ne7 $15 11. e5 Nh7 (11... Ne4 $15) 12. Qb3 ({White should try} 12. O-O $14) 12... O-O $11 13. Ba3 Nf5 {Dodges Ba3-d6} (13... g4 $1 $11 14. Nh4 Nc6 15. bxc6 Qxh4+ 16. Kd1 dxc6) 14. Bxf8 $14 Qxf8 15. O-O Ne3 (15... d6 $14) 16. Re1 (16. Nbd2 $1 $18 {and White stays clearly on top.}) 16... d5 (16... g4 $16) 17. exd6 (17. Bxd5 $18 {Hoping for Nf3-d2.} g4 18. Nh4 Nxd5 19. Qxd5) 17... Bf5 {1-0 Frink,F (2123)-Kabyzhanov,B (2042) W-ch Disabled Dresden 2015 (7)} (17... g4 $16 18. Ne5 Ng5)) 8. O-O $3 {Black is clearly better. (according to Obsidian eval) But it's in Kings gambit Muzio style} gxf3 9. Qxf3 Bg7 (9... Nxd4 10. Bxf7+ (10. Qxf4 $2 f6 $19) 10... Ke7 (10... Kxf7 11. Qh5+ Ke6 12. Bxf4 $17) 11. Qd3 $17) ({Black should play} 9... Qb6 $1 $17 10. Bxf7+ Kd8 (10... Kxf7 $2 11. Qxf4+ $18)) 10. Bxf7+ $1 $11 {Decoy} Ke7 $2 {[#]} (10... Kxf7 $15 {keeps the upper hand.} 11. Qxf4+ Nf6 (11... Qf6 12. Qg3 $11)) 11. Bxf4 $1 {White is more active.} Bxd4+ (11... Kxf7 12. e5 (12. Bc7+ Qf6 $11) 12... h5 (12... Nxd4 13. Qh5+ Ke6 14. Bg5 $16) 13. Bg5+ $16) 12. Kh1 Nf6 (12... Bxa1 13. Bg5+ Kd6 14. Bxd8 Nxd8 15. c3 $18 (15. axb4 Be5 $18)) (12... Kxf7 13. Bc7+ Qf6 14. Qb3+ Ke8 15. Rxf6 Nxf6 16. c3 $11) 13. c3 {Some like it hot} bxc3 {[#]} (13... Kxf7 $2 14. cxd4 Nxd4 15. Qd3 $16) 14. Nxc3 $1 Kxf7 15. Nd5 $1 {sacrificing the rook at a1 but starting an attack} {Black is on the road to losing.} Bxa1 $2 (15... d6 $11 16. Bg5 Bxa1 17. Qh5+ Ke6 18. Qh3+ Kf7 19. Qh5+) 16. Bc7 $18 Qf8 17. Rxa1 Rg8 18. Nxf6 (18. Qxf6+ Ke8 19. Qh4 Qg7 $17 (19... Rg6 20. Bf4 $11)) 18... Kg7 19. Nh5+ Kh6 (19... Kh8 $6 20. Qc3+ Rg7 21. Bf4 $18) 20. Bf4+ $1 Kg6 21. Rf1 $1 d5 22. Ng3 (22. exd5 Nd4 23. Qd1 Nf5 $15 (23... Qxa3 $2 24. Bc1 $18)) 22... h6 23. exd5 Ne7 24. Qh5+ $1 Kh7 25. Be3 $1 (25. Be5 Nf5 26. Ne4 (26. Nxf5 $2 Rg5 $19) 26... Rg6 $19) 25... Bf5 {and ...Qf8-g7! would now be decisive} (25... Qg7 26. Rf7 Kh8 27. Bd4 (27. Qxh6+ Qxh6 28. Bxh6 Nxd5 $19) (27. Rxg7 Rxg7 28. Bd4 {Pin} Kh7 $18) (27. Bxh6 Qxf7 28. Qxf7 Nf5 $18) 27... Kh7 28. Ne4 (28. Rxg7+ Rxg7 29. Bxg7 Kxg7 $18) 28... Nf5 29. Rxg7+ (29. Bxg7 Ng3+ 30. hxg3 Rxg7 31. Nf6+ {Deflection} Kh8 32. Qxh6+ Rh7 33. Rxh7#) 29... Kh8 30. Rxb7+ Rg7 31. Qe8+ Kh7 32. Nf6#) 26. d6 $1 (26. Nxf5 Rg6 $14) 26... Bg6 {[#]} 27. Qh4 $1 (27. dxe7 Qxf1+ (27... Bxh5 28. exf8=B Rgxf8 29. Rxf8 $15) 28. Nxf1 Bxh5 $19) (27. Rxf8 Bxh5 28. dxe7 Bg6 $11) 27... Qxf1+ (27... Nf5 28. Nxf5 h5 (28... Bxf5 $2 29. Rxf5 Qxd6 30. Rf7+ Rg7 31. Qe4+ Kg8 32. Rxg7+ Kxg7 33. Qxb7+ Kf6 34. Qxa8 $18) 29. Kg1 $18 (29. d7 Rg7 $18)) 28. Nxf1 Nf5 29. Qb4 Rad8 30. Bf4 (30. Qxb7+ Rg7 31. Qb4 Rxd6 $11) ({Not} 30. Bxa7 Rxd6 31. Ne3 (31. Qxb7+ $2 {loses.} Rg7 $19) 31... Rg7 $16) 30... Rg7 31. Nd2 {4.1 ahead according to Obsidian analysis; so it could have been adjudicated; with P4 the final win still takes quite some more moves} Re8 32. Nf3 {Against Re8-e1+} Rd7 33. h3 a6 34. Kh2 Re6 35. Qb3 Re8 36. Qa4 Red8 37. Qb4 Ng7 38. Nh4 Re8 39. Qa4 Red8 40. Nxg6 Kxg6 41. Be5 Ne8 42. Qe4+ Kf7 43. Qf5+ Kg8 44. Qg6+ Ng7 45. Bf6 Rf8 46. Qxh6 b6 47. Qg6 Rff7 48. Be5 Kf8 49. h4 Nf5 50. h5 Nh4 {[#]} 51. Qe4 $1 Rh7 52. Qxh4 b5 53. Qf6+ Ke8 54. Qe6+ Kf8 55. h6 b4 56. axb4 a5 57. bxa5 Rhf7 58. g4 Rf2+ 59. Kg3 Rff7 60. g5 {Be5-f6 would kill now.} Rh7 61. Bf6 Rc7 62. dxc7 {White mates.} Rxc7 63. g6 Rc3+ 64. Kh4 Rc4+ 65. Qxc4 Ke8 {Weighted Error Value: White=0.03 (flawless) /Black=0.40} 66. Qc8# 1-0
[/pgn]
More normal for the 4th move would be 4.b5, played 137 times, with 43 pct 'score' (success).
the gambit move 4.f4!! scores 67 pct, not entirely new, but only played three times before
(by humans) highest rating 2123 (an FM) with the move order 1.e4 c5 2.b4 Nc6 3.a3.
Also good is 4.Bc4 played five times, with 70 pct success, eg. played by GM Shabalov (2563) in a rapid
(not blitz!) game, in 2017 which he won. https://en.wikipedia.org/wiki/Alexander_Shabalov#
"Shabalov was born in Riga, Latvia(1967), and was known during much of his career for courting complications even at
the cost of objective soundness, much like his fellow Latvians Mikhail Tal and Alexei Shirov. He has transitioned
to a more conservative and positional playing style as of 2019".
My comment: such 'soundness' depends on time control, in a blitz game the Sicilian wing gambit is
certainly playable, especially if you know it (imo it works best against Sicilians with ...e6).

The move 8.0-0! is in the style of the Muzio gambit, which actually should be called Polerio gambit,
after the 16 th (!) century Italian chess theoretician G. Polerio. Although P5 finds it independently,
it was already in my gambit book, so played instantly.
https://en.wikipedia.org/wiki/Giulio_Cesare_Polerio
https://www.chess.com/blog/batgirl/muzio-madness
jefk
Posts: 1025
Joined: Sun Jul 25, 2010 10:07 pm
Location: the Netherlands
Full name: Jef Kaan

Re: Beauty contest

Post by jefk »

in addition to the comments about the previous game, where i mentioned that after 1.e4 c5 2.a3 Nc6 3.b4
there's a transposition to the Sicilian wing gambit (normally with 2.b4) there actually a separate name
for this line, namely, the 'Roel van Duijn gambit'.

After Dutch ex-provo/politician mr R. van Duijn. https://en.wikipedia.org/wiki/Roel_van_Duijn
who wrote an article in the New in Chess Yearbook (nr 111) about 'his' gambit in 2014.
https://www.newinchess.nl/Na/archives/? ... ectID=1845
In this article he claims that 3.b4! after 2...Nc6? is good for White, and then starts analyzing after the
moves 2...g6! or first 2...d6 and then later 2...g6. But in both situations without b4, and thus there is no gambit...
So imo only the move sequence 1.e4 c5 2.a3 (Mengarini/Bezgodov(*) and then 3.b4!? is the real Rvd Gambit.
An older article from 1994 in Dutch https://www.nsvg.nl/main/archief.php?ho ... ambiet.txt

The 4th move by Black 4...e5 occurs in my database about 167 times
vs 750 time for 4...cxb4 ; as e.g. RvDuijn (2021)-H.D.Mewes(1899), 2013, 1-0
As analyzed -auto-fritzed- below:
[pgn]
[Event "EU-chT Seniors 15th"]
[Site "Dresden"]
[Date "2013.07.25"]
[Round "6"]
[White "Van Duijn, Roel"]
[Black "Mewes, Hans Dieter"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2021"]
[BlackElo "1899"]
[PlyCount "41"]
[GameId "1166657144643584"]
[EventDate "2013.07.20"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Stoertebeker"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "GER"]

1. e4 c5 2. a3 Nc6 3. b4! cxb4 4. axb4 Nxb4 5. c3 Nc6 6. d4 d5 $6 {...d6! would have been stronger} 7. exd5 Qxd5 8. Na3 e5 {8...Qa5! would be best for Black} (8... Qe4+ $2 {8...Dd5-a5 0.48} 9. Be2 Bd7 {[#]} (9... Qxg2 10. Bf3 Qg6) 10. Nf3 $1 $18 e6 11. Ng5 Qf5 12. Nb5 Rc8 13. Bd3 Qd5 14. O-O $1 {c3-c4! is the strong threat.} Ne5 $2 (14... Nd8 {was worth a try.}) 15. Ra5 Nxd3 16. Nc7+ $1 Rxc7 17. Rxd5 exd5 (17... Nxc1 $142 18. Ra5 Rxc3 19. Rxa7 Rc8) 18. Qxd3 $18 Be7 {1-0 Bezgodov,A (2558)-Askarov,M (2434) RUS-chT Clubs sf Cheliabinsk 2005 (4)}) (8... Qa5 $14) (8... Bd7) 9. Nb5 $18 {White has strong compensation. White is clearly better.} Bd6 {[#] Repels Nb5-c7+} (9... Kd8 $16) 10. Bc4 $1 {Decoy} Qe4+ 11. Ne2 Bb8 12. O-O {[#]} Nf6 $146 (12... exd4 $2 {12...Pg8-e7 2.50} 13. Nexd4 Nge7 14. Re1 Qh4 15. g3 Qf6 16. Nxc6 bxc6 {[#]} 17. Qb3 $2 (17. Ba3 $1 $18 Be5 (17... O-O 18. Bxe7) 18. Rxe5) 17... O-O $1 {1-0 Kulagin,M (2263)-Sarkozy,L (2364) Pardubice Czech op 22nd 2011 (7)}) 13. Ba3 Bd7 14. Qb3 Nd8 (14... Qg6 $142 15. Ng3 b6) 15. Ng3 $18 {White is clearly winning.} Qg6 16. dxe5 Ne4 17. Nxe4 Qxe4 18. Rfe1 Qg6 19. Qb4 Nc6 {Repels Qb4-e7+} 20. Nd6+ Bxd6 {White took control after the opening. Weighted Error Value: White=0.09 (flawless) /Black=0.58} 21. exd6+ {Mistake: --- Black=3 Inaccurate: --- Black=2 OK: White=7 Black=4 Best: White=2 --- Brilliant: White=1 ---} 1-0
[/pgn]

(*) https://www.amazon.nl/Challenging-Sicil ... 9548782375
by the Russian GM Bezgodov https://en.wikipedia.org/wiki/Alexei_Bezgodov
A later book about the same variation https://www.schachversand.de/challengin ... -2-a3.html
and you can also get it here https://archive.org/details/challenging ... 9/mode/2up
by Russin IM Sergej (not Mikhael) Soloviov https://players.chessbase.com/en/player ... gei/246733
swami
Posts: 6662
Joined: Thu Mar 09, 2006 4:21 am

Re: Beauty contest

Post by swami »

Candidate #1 and #2 - Brilliant games. If a GM plays half as good as this, the rating would hit the ceiling.
jefk
Posts: 1025
Joined: Sun Jul 25, 2010 10:07 pm
Location: the Netherlands
Full name: Jef Kaan

Re: Beauty contest

Post by jefk »

thx for the feedback mr swami.
Indeed game nr 1 was amazing, Slowchess is a strong engine, in the list below 3463
http://www.cegt.net/40_4_Ratinglist/40_ ... liste.html
not sure if i used the same version, but with later games i did notice it often beats Pat5.

The second game imo -also- is interesting because of the novelty/new gambit; Rodin isn't superGM level
(at higher time controls) but engines play better in blitz than humans; so in blitz, Rodin may indeed
play better than most GM's; who often can make mistakes with fast-blitz time controls. And great
attacking play by P5. A stronger engine than Rodin could probably have prevented the move 16.Bxh7
but that's imo not so relevant when judging the 'beauty' (or 'brilliancy') of a chess game.
Brilliancy prizes are often given after tournaments for the most interesting games, maybe
in human chess they should give more attention to this aspect to the game (in future) rather
than only counting win/loss points.. my 2 cnts. :? 8-)

PS if i stumble upon am (imo) better game than 1 (or possibly 2) coming weeks while i post
more games, i'll mention it :!:

PS2 about brilliancy prizes

someone there wrote that with the computers these brilliancies are gone but with
the recent Eas engines (and possibly my gambit book) this isn't true anymore
more about such (human) brilliancies:
https://www.chess.com/article/view/garr ... ncy-prizes
https://www.stlpr.org/arts-culture/2020 ... y-in-chess
https://www.chesshistory.com/winter/extra/prizes.html
there's even a book about brilliancy prize games

(old notation but seems an interesting book)
jefk
Posts: 1025
Joined: Sun Jul 25, 2010 10:07 pm
Location: the Netherlands
Full name: Jef Kaan

Re: Beauty contest

Post by jefk »

the book i mentioned about brilliancy prizes by the late prolific chess writer Fred Reinfeld wasn't displayd,
it's on amazon, but this apparently is blocked; so other link (if it doesn't work you can google if you're interested
https://www.bol.com/nl/nl/f/great-brill ... 029967306/
https://www.chesshistory.com/winter/ext ... feld1.html

Fun fact for game nr 1: after a French defense, Black switched to the Sicilian defense, after which
White is going for the awesome Roel van Duijn gambit :mrgreen:
As was discussed for game 15 (and the subsequent posting).

Personally i nominate the latter game (nr 15) for -preliminary- third place, because of the original second
gambit move with f4 the subsequent interesting 'Polerio' style move 0-0 sacrificing the knight on f3,
and the strength of the Crafty opponent (strong than e.g. Rodin).
User avatar
Rebel
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Full name: Ed Schröder

Re: Beauty contest

Post by Rebel »

jefk wrote: Mon Sep 15, 2025 8:26 pm
The Roel van Duijn gambit, the man made something of his life after all :D

What tool are you using Jef to get this nice comments in a PGN?
90% of coding is debugging, the other 10% is writing bugs.