Beauty contest

[jefk]

With Patricia 5 plus my gambit book, did some testgames, and with the Pohl tool found some very interesting wins
listing the top three (with 5 pawn units sacrifice); note ganbits were played, and then a rather
'conventional' king's attack eg with Bxh7, nevertheless interesting games; the nonP5 engines
played with own, or a rather simple, conventional book.bin opening book (they may have played
a bit better without opening book, don't know, time time control was rather fast, 3/2).


candidate nr 1
[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.08.01"]
[Round "11"]
[White "Patricia 5.0"]
[Black "SlowChess Blitz 2.9 sse"]
[Result "1-0"]
[Annotator "IWS-Tool: 5+ PawnUnits Sacrifice found in this game"]
[ECO "B40"]
[WhiteFideId "-1"]
[WhiteFideId "-1"]
[PlyCount "105"]
[GameId "2209227349704929"]
[EventDate "2025.??.??"]
[TimeControl "180+2"]

1. e4 e6 2. Nf3 c5 3. b4 cxb4 4. a3 b6 5. d4 Nf6 6. Bd3 Bb7 7. Qe2 d5 8. e5 Ne4 9. axb4 Bxb4+ 10. c3 Be7 11. O-O O-O 12. Ne1 Qc7 13. f3 Nxc3 14. Nxc3 Qxc3 15. Bb2 Qc8 16. f4 Nc6 17. Bxh7+ Kxh7 18. Qh5+ Kg8 19. Rf3 f6 20. Rh3 Ba6 21. Qg6 Be2 22. Raa3 Qe8 23. Qh7+ Kf7 24. Rag3 Rg8 25. Rh6 b5 26. f5 Qc8 27. Nc2 Bd3 28. Rxd3 Nxe5 29. Rxf6+ Bxf6 30. dxe5 Qxc2 31. fxe6+ Kxe6 32. Qh3+ Kf7 33. Qd7+ Kg6 34. Qg4+ Kf7 35. e6+ Ke7 36. Ba3+ Kd8 37. e7+ Kc7 38. Rxd5 Qc4 39. Rc5+ Qxc5+ 40. Bxc5 Kc6 41. Ba3 Kd5 42. Qe2 b4 43. Qb5+ Ke4 44. Qxb4+ Kd3 45. Qb3+ Kd4 46. g4 Rac8 47. Qe6 a5 48. g5 Bxe7 49. Qxe7 Kc3 50. Bd6 g6 51. Kg2 Rge8 52. Qg7+ Kb3 53. Qxg6 {Black resigns} 1-0

[/pgn]

ad 1 the move 12.Ne1!N appears to be a novelty, in 2020 Guerra Tulcan (2310) played 12.Ba3 (titled tuesday, chess.com)
and also won the game).

candidate nr 2
[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.08.03"]
[Round "93"]
[White "Patricia 5.0"]
[Black "Rodin v8.00"]
[Result "1-0"]
[Annotator "IWS-Tool: 5+ PawnUnits Sacrifice found in this game"]
[ECO "B21"]
[WhiteFideId "-1"]
[WhiteFideId "-1"]
[PlyCount "91"]
[GameId "2209227202019529"]
[EventDate "2025.??.??"]
[TimeControl "180+2"]

1. e4 c5 2. f4 d5 3. d4 dxe4 4. Nc3 cxd4 5. Nxe4 Nf6 6. Bd3 Nxe4 7. Bxe4 e6 8. Nf3 Bc5 9. Bd2 Nc6 10. O-O O-O 11. Bd3 Qd5 12. Qe1 a5 13. a3 Bd7 14. Kh1 Rfc8 15. Be4 Qd6 16. Bxh7+ Kxh7 17. Qh4+ Kg8 18. Ng5 Ne7 19. f5 Nxf5 20. Qh5 Be8 21. Qh7+ Kf8 22. Ne4 Qb6 23. Bg5 Nh6 24. Nf6 gxf6 25. Rxf6 Ke7 26. Rxf7+ Kd6 27. Bf4+ Kd5 28. Rxb7 Qa6 29. Re1 Nf5 30. Qh3 Ne3 31. c4+ Kxc4 32. Rc1+ Kd3 33. Bxe3 dxe3 34. Qh7+ Kd4 35. Rd1+ Ke5 36. Qh8+ Ke4 37. Qh4+ Kf5 38. Qh3+ Ke5 39. Qg3+ Kf5 40. Qf3+ Kg6 41. Qg4+ Kh6 42. Qg7+ Kh5 43. g4+ Kh4 44. Qf6+ Kxg4 45. Rg1+ Kh5 46. Rh7# {White mates} 1-0

[/pgn]

ad 2: the move 4.Nc3!N appears to be a novelty, in 2020 Palachev(2345) played 4.d4 in a blitz game, Titled Tuesday (chess.com)
in 2020 and the game ended in a draw.

Candidate nr 3
[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.07.31"]
[Round "1"]
[White "Patricia 5.0"]
[Black "Myrddin 0.92"]
[Result "1-0"]
[Annotator "IWS-Tool: 5+ PawnUnits Sacrifice found in this game"]
[ECO "C01"]
[WhiteFideId "-1"]
[WhiteFideId "-1"]
[PlyCount "70"]
[GameId "2209227071770817"]
[EventDate "2025.??.??"]
[TimeControl "180+2"]

1. e4 e6 2. d4 d5 3. Bf4 dxe4 4. f3 Bd6 5. Bxd6 cxd6 6. Nc3 exf3 7. Nxf3 a6 8. Qd2 b5 9. Bd3 Nf6 10. O-O-O Bb7 11. d5 e5 12. Ng5 Nbd7 13. h4 b4 14. Nce4 Qb6 15. Rhe1 Nxe4 16. Nxe4 O-O 17. Qg5 Rad8 18. Ng3 h6 19. Qf5 g6 20. Qf3 Qd4 21. Be4 Qc4 22. Nf5 Qxa2 23. Nxh6+ Kg7 24. Nf5+ Kg8 25. Qe3 Nc5 26. Qh6 gxf5 27. Qg5+ Kh8 28. Qf6+ Kg8 29. Rd3 Nxd3+ 30. Bxd3 Rfe8 31. h5 Qxd5 32. h6 Qxg2 33. Bxf5 Kf8 34. h7 Qg7 35. h8=Q+ Qxh8 {Xboard adjudication} 1-0

[/pgn]
ad 3) the gambit move 3.Bf4?! is the -rather rare- 'Mad gambit' in the French defense; the move 4...Bd6N?!
was a novelty, and apparently not a good one. But then it's an awesome gambit anyway isn't it.


your votes please (1,2, or 3) ....
Or show me even better games.

These games show some Morphy style gambits at high Elo level, except for Rodin maybe which is more FM level.
Note that Morphy often played against (much) weaker players, so his fast wins (shorties) in such
situations are not worth very much from a theoretical point of view. So again, for human players i
would probably rank Nezmethdinov higher (than Morphy), 1. Nezh, 2.Tal, 3.Morph or so.

PS new Chess Gambiteer Package at sourceforge, version 4.4 (now with P5, and added option
to play against P5 (with gambit book) with reduced strength approx chess club level elo 1400:
https://sourceforge.net/projects/chess-gambiteer/files/
So now you can learn and practice gambits at the highest levels, and who knows, maybe
later surpass Nezh in the human ranking of all times (besides the endgame Goats ofcourse
like C & C).

[jefk]

ad 2: the move 4.Nc3!N appears to be a novelty, in 2020 Palachev(2345) played 4.d4 in a blitz game, Titled Tuesday (chess.com)

correction: Palachev(2345) played 4.d5 in a blitz game

Note this opening, a bit similar to the Tal gambit (after 3.exd5 Nf6!), is the McDonnell attack
in the Sicilian; after the Irish chess player, about two centuries ago
https://en.wikipedia.org/wiki/Alexander ... ss_player)
here's a famous game
https://en.wikipedia.org/wiki/McDonnell ... 4,_game_16

The new move 4.Nc3! is a new gambit, which i suggest can/should be called McDonnell/Kaan
gambit (*). So even two centuries after such great players as McD, in the meantime
apparently nobody, not even Tal, Morphy, or Nezh has ever came up with such a novelty/new
opening already at move 4. Worth a story for Chessbase maybe, but then i might to
do a more thorough checks on other databases (already checked on 365chess.com
because 3.d4!? already is quite rare, compared with 3.exd5 it may be not so surprising
that 4.Nc3!! is (at least seems to be) a novelty, anyway it shows (human) chess isn't
dead (even although it's a draw)

PS below yet another very interesting game, this time 'only' 4 units sacrificed,
but an interesting shortie, D engine playing with gambit book
[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.08.03"]
[Round "15"]
[White "DanaSah 9.0"]
[Black "Romichess"]
[Result "1-0"]
[Annotator "IWS-Tool: 4 PawnUnits Sacrifice found in this game"]
[ECO "B21"]
[WhiteFideId "-1"]
[WhiteFideId "-1"]
[PlyCount "46"]
[GameId "2209247208505889"]
[EventDate "2025.??.??"]
[TimeControl "180+1"]

1. e4 c5 2. f4 Nc6 3. d4 3... Nxd4 4. Nf3 Nxf3+ 5. Qxf3 d6 6. Nc3 e6 7. h4 Bd7 8. Be3 Nf6 9. O-O-O Qa5 10. f5 exf5 11. Bc4 Qb4 12. Qf1 Be7 13. e5 dxe5 14. Rxd7 Nxd7 15. Nd5 Qa5 16. Qxf5 Bd6 17. Bg5 f6 18. Qe6+ Kd8 19. Qxd6 fxg5 20. Rd1 Qa4 21. Nc7 Qc6 22. Ne6+ Ke8 23. Nxg7+ Kd8 {Xboard adjudication} 1-0

[/pgn]

3.d4! seems to be New move (and thus new gambit(!) Nakamura played 3.Nf3 in a 2024 blitz game (Ttuesday)
it seems similar to the Sicilian Grandprix, anti Dragon gambit,
1.e4 c5 2.f4 Nb8c6 3.Ng1f3 g6 4.Nb1c3 Bg7 5.Bc4 d6 6.O-O Ng8f6 7.d3 O-O 8.f5[Sicilian Defence]Grand prix, Anti-Dragon gambit{B20}
But different nevertheless. The move 3...Nxd4?! appears to be not so good (even with all the Romichess book learning
But then after 3...cxd4 the gambit also seems to be playable to me (otherwise i wouldn't have included it in my
gambit book, but you can analyze (eg with P5) yourself, ofcourse).

So here's new record again, novelty at move 3, and new gambit (GrandPrix/Djengisx gambit, with x now approaching 40)


(*) in my gambit book there are in fact many new gambits, and in a new names file
for Bookbuilder they usually -even more modestly are called Djengis gambit(x) with
x surpassing next month the magical nr of 48 which is the nr of gambits invented
by Lev Zilbermints in NY, even more than the late Hawain champion Clyde Nakamura;
with 'Djengis' referring to an old buggy Winboard engine i made (based on an earlier,
rudimentary engine by the later M.Kervinck) around the turn of the Millennium, possibly
to be revived (end of ) this year with some help by Grok4 (not gpt5 btw, tf), for the
purpose of having yet one other simple engine playing at human level (with gambits_.
)

[pohl4711]

Very interesting project, using Patricia and my IWS-Tool to find new gambits and new ideas in already known gambits.
Always great to see, that Patricia can be a real helpful "tool", not just an entertaining-machine.
I had an quite similar idea, using Patricia (and some other aggressive playing engines) to find new ideas in well known openings. Right now, it is in the works.

Keep going!

[jefk]

Another game
[pgn]
[Event "Blitz 4min+2sec"]
[Site "dh"]
[Date "2025.09.11"]
[Round "5"]
[White "Patricia 5.0"]
[Black "Toga IV 1.1"]
[Result "1-0"]
[Annotator "Tactical Analysis 7.0"]
[ECO "B21"]
[WhiteFideId "-1"]
[WhiteFideId "-1"]
[PlyCount "54"]
[GameId "2220861655564331"]
[TimeControl "240+2"]

{B21: Sicilian: 2 f4 Grand Prix or Mc Donnell attack} 1. e4 {0} c5 2. f4! d5 (2... Nc6 3. Nf3 g6 =}) 3. Nf3!? (transposition to bird opening, batavo gambit {other Relevant:} 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. d3 e6 6. Qe2 Nc6 7. c3 O-O-O 8. Nf3 Bd6 9. e5 Bc7 10. d4 cxd4 11. cxd4 Nge7 {0-1 Nakamura,H (2802)-Nepomniachtchi,I (2755) Titled Tuesday intern op 10th Sep Early Chess,com INT blitz 2024 (7)}) 3... dxe4 4. Ne5!! {or 4.Ng5?! but then 4...Bf5!} Nd7 5. Nc3 Ngf6 6. d3 Nxe5 7. fxe5 Ng4 8. Bf4 {The position is equal.} (8. dxe4 {simplifies} Qxd1+ 9. Nxd1 Bd7 10. Nc3) 8... Qd4 9. Nxe4 Nxe5 10. c3 Qd5 11. Nxc5 {Remove Defender, Decoy} Qxc5 12. d4 $36 {White has the initiative.} Qb6 13. Bxe5 {[#]} (13. dxe5 Qxb2 14. Rc1 Bd7 $15 (14... Qxa2 15. Bb5+)) 13... Qxb2 $146 ({Predecessor:} 13... f6 14. Bf4 Qxb2 15. Rc1 Bf5 16. Be2 Rc8 17. Bd2 e6 18. O-O Kf7 19. Rf2 Be7 20. a4 Bg6 21. Bg4 h5 22. Bh3 {½-½ Modestino,M (2216)-Flitsch,G (2278) WS TT/7/14/fin email ICCF email 2017}) 14. Be2 f6 {[#]} 15. O-O $1 fxe5 16. Rb1 $1 Qa3 {[#]} (16... Qxc3 $2 17. Bb5+ Bd7 18. Bxd7+ Kxd7 19. dxe5+ Ke8 20. Qd5 $18) (16... Qxa2 $11 {and Black is okay.} 17. Rb4 (17. Bb5+ $2 Kd8 $19) 17... Qa5 18. Bb5+ Kd8) 17. Bb5+ $1 $18 {White has strong compensation.} Kd8 18. Rb4 {White is more active.} Be6 (18... Qxa2 19. Rc4 $18) 19. d5 Bc8 {[#]} (19... Bf5 {keeps fighting.}) 20. d6 $1 {d6xe7+ would kill now.} e6 (20... Qxa2 $2 21. dxe7+ (21. d7 Qe6 $18) 21... Kxe7 22. Bc4 $18) (20... Qxc3 21. Rc4 $18) (20... Qa5 21. d7) 21. Qg4 h6 {Against Qg4-g5+} (21... Qxa2 22. Qg5+) 22. Qg6 Bxd6 {White must now prevent ...a7-a6.} 23. Qxg7 {and Rf1-d1 would now be decisive} a6 {[#]} 24. Rd1 $1 (24. Qxh8+ Kc7 $16) 24... axb5 25. Rxd6+ (25. Qxh8+ $2 {too greedy.} Kc7 26. Rxb5 Ra5 (26... Qxa2 $2 27. Qh7+ Bd7 28. Kh1 $19) (26... Qxc3 $2 27. Rdb1 $19) 27. Rxa5 Qxa5 28. Qxh6 Qxa2 $19 (28... Qxc3 $2 29. Kh1 $19)) 25... Ke8 26. Qxh8+ Ke7 27. Qd8+ ({Not} 27. Qxe5 Qc1+ 28. Kf2 Rxa2+ 29. Kg3 Qc2 $11) {Weighted Error Value: White=0.00 (flawless) /Black=0.2} 27... Kf7 1-0

[/pgn]

The Sicilian transposed with the awesome move 3.Nf3!? to the Bird, Batavo gambit.
https://www.bookmoves.net/openings/bird ... gambit-b21

[jefk]

So far i haven't posted spectacular games with a win for Black (eg. after a gambit)
but they occur sometimes (eg. Benko gambit, but sometimes also some others).

Here's an example, with a novelty for Black at move 4, in the rare French Haberditz (*) variation.

[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.09.12"]
[Round "12"]
[White "Myrddin 0.92"]
[Black "Patricia 5.0"]
[Result "0-1"]
[Annotator "IWS-Tool: 5+ PawnUnits Sacrifice found"]
[ECO "C03"]
[PlyCount "143"]
[GameId "2221269888233514"]
[EventDate "2025.??.??"]
[TimeControl "240+2"]

1. e4 e6 2. d4 d5 3. Nd2 f5 4. exf5 {[#]} ({Relevant:} 4. e5 c5 5. Ngf3 Nc6 6. c4 Nxd4 7. Nxd4 cxd4 8. Nf3 Ne7 9. Be2 Nc6 10. O-O dxc4 11. Bxc4 Be7 12. a3 O-O 13. b4 Qc7 14. Qe2 {½-½ Movsesian,S (2640)-Schmittdiel,E (2412) Bundesliga 1920 Germany 2019 (11.6)}) 4... Nf6!! $146 ({Voorganger:} 4... exf5 5. Ndf3 Bd6 ! 6. Bg5 Nf6 7. Qe2+ Qe7 8. Bxf6 gxf6 9. O-O-O Qxe2 10. Nxe2 Nc6 11. g3 Ne7 12. Ne1 Ng6 13. Ng2 c6 14. h4 h5 15. Nef4 Nxf4 16. Nxf4 Kf7 17. Be2 Bxf4+ 18. gxf4 Bd7 {1-0 Fedorchuk,S (2604)-Schmittdiel,E (2402) Bundesliga 2122 Germany 2022 (1.2)}) 5. fxe6 Bd6 6. c4 Bxe6 7. c5 Bf4 8. Ne2 {White is slightly better.} Bxd2+ 9. Bxd2 Qe7 10. Qb3 O-O 11. Qxb7 (11. O-O-O {simplifies} Nc6 12. f3 Bf7 13. h4) 11... Ne4 {Discovered Attack} 12. Qxa8 Nxf2 (12... c6 $16 13. Nf4 Bf7) 13. Rg1 (13. Be3 $5 Nxh1 14. Nf4 $16 (14. Qxa7 Nc6 $14)) 13... Nd3+ 14. Kd1 Na6 {A dynamic duo of knights.} 15. Qb7 {[#]} Bg4 $1 16. Qxd5+ Kh8 $1 17. a3 (17. Qb7 $11 Ndb4 18. Kc1 (18. Bxb4 Nxb4 19. Kd2 a5 $14 {Remove Defender})) 17... Be6 $1 $17 {Black is much more active.} 18. Bg5 (18. Qb7 $2 c6 $19) 18... Qe8 19. Qb7 {[#]} Naxc5 $1 20. dxc5 Qd7 {Against Ne2-d4} (20... Qa4+ $11 21. b3 Bxb3+ 22. Kd2 Qd7) 21. c6 $19 (21. Qxa7 Bb3+ 22. Kd2 Nb4+ 23. Kc3 Qd3+ 24. Kxb4 Qc4+ 25. Ka5 Qa4#) 21... Qd5 {( -> ...Nd3-b4+). Black has strong compensation.} 22. Nc3 Nf2+ 23. Ke1 Qe5+ 24. Be2 Nd3+ 25. Kd1 Nc5 26. Qb5 {[#]} (26. Qxa7 $2 Qd4+ 27. Kc1 Qxg1+ (27... Nb3+ $2 28. Kb1 $19) 28. Kd2 Nb3+ (28... Qxa1 $2 29. Qxc5 Qxb2+ 30. Kd3 $18) 29. Kd3 Qxa7 $19) 26... a6 $1 {The board is on fire.} 27. Qb4 (27. Qa5 $2 Qd4+ 28. Kc1 (28. Kc2 Bf5+) 28... Qxg1+ (28... Nb3+ $2 29. Kc2 $19) 29. Kc2 Bf5+ $19 (29... Qxa1 $2 30. Qxc5 Rb8 31. Nd1 $18)) 27... Bb3+ 28. Kc1 Qxg5+ 29. Kb1 {[#]} Qf5+ 30. Ne4 Nxe4 31. Bd3 Qf2 $40 {Black attacks with force.} 32. Qxf8+ Qxf8 33. Bxe4 Qf4 {Prevents Rg1-c1.} 34. Bc2 Qxh2 35. Rc1 Bg8 36. g4 g5 37. a4 h5 38. gxh5 g4 39. a5 (39. h6 {was necessary.}) 39... g3 $1 (39... Qxh5 40. Ra3 $17) 40. Ra4 Qxh5 41. Be4 {Hoping for Rc1-h1.} Qe2 42. Bc2 g2 43. Rh4+ Kg7 44. Rd4 (44. Rg1 Qf1+ 45. Bd1 Qxg1 46. Rg4+ Kf6 (46... Kh8 47. Kc2) 47. Rxg8 Qxd1+ 48. Ka2 Qd5+ (48... g1=R $2 49. Rxg1 Qxg1 50. b4 $19) 49. b3 Qxg8 50. Kb2 g1=Q (50... g1=R 51. Kc3 Qg2 52. Kd4 Qd2+ 53. Ke4 Rf1 54. b4 Rf4#) 51. Kc3 Qe1+ 52. Kd4 Qg4+ 53. Kd5 Qxa5#) 44... Qf2 45. Rg4+ Kf8 46. Rd1 Qf1 47. Rc1 Bd5 48. Rg5 Bf3 (48... Bxc6 $2 49. Rf5+ $18) 49. Rf5+ Kg7 50. Rg5+ Kf6 51. Rf5+ Ke6 52. Rg5 Qf2 53. Rg7 Qe3 (53... Bxc6 54. Rg6+ Kd7 55. Rd1+ Kc8 56. Rxc6 $17) 54. Rg3 Kf7 55. Bg6+ Kf8 56. Bc2 Qf4 57. Rg6 Bg4 ({Not} 57... Be4 58. Rf6+ Qxf6 59. Bxe4 $19) 58. b3 {[#]} Qxc1+ $3 {Remove Defender, Promotion} 59. Kxc1 g1=Q+ (59... g1=R+ $2 {loses.} 60. Kb2 $18) 60. Kb2 Qd4+ 61. Ka2 Qf4 62. Kb1 (62. Kb2 $142 Kf7 63. Ka2) 62... Kf7 {Strongly threatening ...Bg4-f5.} 63. Ka2 Bf3 64. Rg1 {Prevents Qf4-c1. Black is clearly winning.} Be4 65. Bxe4 {Endgame KQ-KRB} Qf2+ 66. Ka3 (66. Kb1 $142 Qxg1+ 67. Kc2) 66... Qxg1 67. Bd3 Qa1+ 68. Kb4 Qd4+ 69. Bc4+ Ke7 70. Ka4 Kd6 71. Kb4 Qd2+ {Weighted Error Value: White=0.13 (very precise) /Black=0.01 (flawless)} 72. Ka3 {Xboard adjudication. } 0-1
[/pgn]

The novelty 4...Nf6! also is a new gambit, the French-Haberditz-Djengis(68) gambit.

(*) Hans Haberditz was a German chess player who was active primarily in the first half of the 20th century. Very little is widely documented about his chess career on major English-language platforms, but several specialized chess game databases do record a small number of his tournament games. Hans Haberditz has recorded games spanning from 1935 to 1951, showing activity both before and after World War II. Chess game archives document only a handful of his tournament games, suggesting either limited participation in major international events or that he mainly played in local or national competitions.
https://players.chessbase.com/en/player ... Hans/98562
So his name appears in chess player directories, but he is not listed among the most prominent chess masters
internationally or nationally for that period.

[jefk]

next another win for Black, with a rare gambit against the English (similar gambits exist, but with this move order it's quite rare).
Also a demonstration you don't need P5 to get spectacular wins, a very strong engine (in this game Plentychess,
but i also could have chosen SF), against a moderately strong engine Myrrdin (IM level).

[pgn]
[Event "?"]
[Site "?"]
[Date "2025.09.12"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[Annotator "IWS-Tool: 4 PawnUnits Sacrifice found in this"]
[ECO "A21"]
[PlyCount "81"]
[GameId "2221280840962093"]

1. c4 e5 2. Nc3 d5 ({Relevant:} 2... Bb4 3. Nd5 Be7 4. Nf3 d6 5. g3 Nf6 6. Nc3 c5 7. Bg2 Nc6 8. O-O Be6 9. d3 h6 10. e4 Qd7 11. Nd5 Rb8 12. a4 {½-½ Abdusattorov,N (2771)-Vachier Lagrave,M (2736) Sinquefield Cup 12th Saint Louis 2025 (6)}) 3. cxd5 c6! 4. Nf3! cxd5 5. Nxe5 {[#]} Nd7! $146 ({Voorganger:} 5... d4 6. Nb1 (6. Qa4+ $16 Nc6 7. Nxc6 bxc6 8. Qxc6+ Bd7 9. Qe4+ Ne7 10. Qxd4) 6... Bd6 7. Nf3 Nf6 (7... Nc6 $11 {keeps the balance.}) 8. g3 (8. Nxd4 $16 O-O 9. Nc3) 8... d3 $11 9. e3 O-O (9... Nc6 $5) 10. Bxd3 Bxg3 11. Bxh7+ Nxh7 12. hxg3 {1-0 Cardoso Cardoso,J (2414)-Niemann,H (2567) Junior Speed Qual Americas Chess.com INT blitz 2021 (2.4)}) 6. Nxd7 Bxd7 7. Nxd5 Nf6 8. Qb3 {White is slightly better.} Bd6 9. Qxb7 Rb8 10. Nxf6+ (10. Qxa7 Nxd5 11. Qd4 Qa5 $17) 10... Qxf6 11. Qxa7 h5 12. h4 Rc8 13. Qe3+ Be7 14. g3 Qc6 {Prevents Bf1-g2. ( -> ...Qc6xc1+)} 15. f3 Qd6 16. Qf4 Qb6 17. a4 Rh6 18. a5 Qa7 19. d3 (19. d4 $14 Bd6 20. Qe4+ Re6 21. Qd3) 19... Rf6 $1 $11 20. Qe5 (20. Qe3 $1 $14 Rxc1+ 21. Qxc1 Bb4+ 22. Kd1) 20... Re6 $1 $15 21. Qxg7 Bf6 22. Qh7 {[#]} Rxc1+ $1 {Deflection} 23. Rxc1 Qxa5+ $2 (23... Be5 $16) 24. b4 Qxb4+ 25. Kf2 Bd4+ {Black has compensation.} 26. Kg2 Qb2 27. Qg8+ Ke7 {( -> ...Re6xe2+)} 28. Re1 (28. Qg5+ $2 f6 29. Qg7+ (29. Qxh5 $2 Rxe2+ 30. Bxe2 Qxe2#) 29... Kd8 $19) 28... Rg6 29. Qa8 Be5 {This pair of bishops is nice.} 30. d4 Qxd4 $11 (30... Bxg3 $5 31. Qe4+ $8 Kf8 $11) 31. e3 (31. Qa3+ Bd6 32. e3 Rxg3+ (32... Qe5 $2 33. f4 $19) 33. Kf2 Rxf3+ 34. Kxf3 Qg4+ 35. Kf2 Qg3+ (35... Bxa3 $2 36. Rh3 $19) 36. Ke2 Bxa3 $19) 31... Qd6 $40 {Black attacks with force.} 32. Be2 (32. Qa6 $17 Qd2+ (32... Rxg3+ 33. Kf2 $19) (32... Qxa6 33. Bxa6 Rxa6 34. Rhf1 $17) 33. Re2) 32... Bxg3 $19 33. Qe4+ Kf8 34. Kf1 {[#]} (34. Rd1 $17 {keeps fighting.} Be1+ 35. Qxg6 (35. Kf1 Qg3 36. Qa8+ Kg7 37. Qa1+ Kh7) 35... Qxg6+ 36. Kf1) 34... Bh2 $1 {( -> ...Bd7-h3+)} 35. Bd3 Bh3+ {Black is clearly better.} 36. Ke2 {aiming for Qe4-a8+.} Rg2+ 37. Kd1 {[#]} Be6 $1 {And now ...Be6-b3+ would win.} (37... Qa3 38. Re2 Bg3 (38... Qa1+ $2 39. Bb1 $18) 39. Bb1 $16 (39. Rxh3 {leads to mate.} Rg1+)) 38. Re2 Bd5 39. Qf5 {[#]} Bxf3 {Pin} 40. Rhe1 (40. Qxf3 Qxd3+) 40... Be5 $1 ({Weaker is} 40... Bxe2+ 41. Rxe2 Rg1+ 42. Re1 $14) {Weighted Error Value: White=0.15 (very precise) /Black=0.01 (flawless)} 41. Qc8+ {0-1 Myrddin 0.92-PlentyChess 6.0.15 Computer Chess Game Désktop 2025 (16) Xboard adjudication} (41. Qxf3 $142 Qxd3+ 42. Kc1 Qa3+ 43. Kd1 Qa4+ 44. Kc1) *
[/pgn]

Historically, this gambit didn't score so well for Black, especially when declined with 4.Nf3 as in this game,
but there's now a Black novelty at the fifth move namely the move 5...Nbd7. Reversed Sicilian English opening ,
Kleman-Djengis gambit; human chess player Miroslav Kleman was the first player with a reasonable rating (2208) who
played the ...c6 gambit move, in 2020, but only achieved a draw. So now another renewed gambit now for the
highest level(s?) maybe ? who knows;

personally i wouldn't hesitate to use it in blitz (also for surprise purposes).

[jefk]

one more interesting gambit game with Plentychess, a 3300+ Elo engine this time with White again (Italian gambit).
An interesting book about this gambit was written about twenty years ago
https://www.amazon.nl/-/en/Jude-Acers/dp/1553696042

[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.09.12"]
[Round "25"]
[White "PlentyChess 6.0.15"]
[Black "Myrddin 0.92"]
[Result "1-0"]
[Annotator "IWS-Tool: 3 PawnUnits Sacrifice found"]
[ECO "C50"]
[PlyCount "90"]
[GameId "2221289731953337"]
[EventDate "2025.??.??"]
[TimeControl "300+2"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d4 Bxd4 5. Nxd4 Nxd4 6. O-O d6 7. f4 Nf6 8. Nc3 ({Relevant:} 8. fxe5 $2 {8.Pb1-c3 0.12} dxe5 9. Nc3 Bg4 10. Qd3 Be6 11. Bg5 Bxc4 12. Qxc4 c6 13. Rad1 Qe7 14. Kh1 Qe6 15. Qb4 b6 16. Bxf6 gxf6 17. a4 $2 (17. Rf2 $14) {0-1 Paravyan,D (2653)-Firouzja,A (2728) Katara Bullet Final Lichess.org INT blitz 2020 (1.12)} (17... c5 $1 $19 18. Qa3 Nxc2)) 8... Bg4 9. Qd3 {[#]} c6 $146 ({Predecessor:} 9... Qd7 10. Be3 Nc6 (10... Be6 $11 11. Bxd4 exd4 12. Qxd4 O-O) 11. h3 (11. f5 $16) 11... Be6 $11 12. Bxe6 Qxe6 13. f5 Qe7 14. Rfb1 O-O 15. g4 (15. Bg5 $5) 15... Nb4 16. Qd2 (16. Qe2 $11) 16... Rad8 {0-1 Niederdorfer,M (1036)-Struebel,K (852) GER-ch U10 Girls Willingen 2019 (10)} (16... d5 $1 $15 17. Nxd5 Nbxd5 18. exd5 Rfd8)) 10. fxe5 {The position is equal.} dxe5 11. Qg3 (11. Bg5 Ne6 12. Bxe6 Qxd3 13. Bxf7+ Kxf7 14. cxd3 Rhf8 15. h3) 11... Nxc2 (11... Be6 {simplifies} 12. Bd3 O-O 13. Kh1 Re8) 12. Qxe5+ Be6 13. Bxe6 O-O {[#]} (13... Qe7 $14) 14. Bf5 $1 $16 Nxa1 {[#]} 15. Qg3 (15. Bg5 $1 $16 {Black must now prevent Bg5xf6!.} Qb6+ 16. Kh1) 15... g6 $14 (15... Nc2 16. e5 Nh5 17. Qh3 $16) 16. Bh3 (16. e5 $5 Nh5 17. Qg4 $17) 16... Qb6+ 17. Be3 {Active counter play!} Qxb2 18. Bc5 (18. Bd4 $5 Nh5 $8 (18... Nxe4 $2 19. Qe5 $18) 19. Qe5 $14) 18... Nh5 19. Qf3 Nf4 20. Kh1 $1 Nxh3 21. Qxh3 Rfd8 22. e5 Nb3 23. Be7 {Chess con chili.} (23. axb3 Qxb3 24. Qe3 a5 $16) 23... Qc2 {Prevents Nc3-e4} (23... Nd2 $2 24. Qh6 Nxf1 25. Bf6 $18) 24. Bxd8 (24. axb3 $6 Qd3 (24... Rd3 $2 25. Qh6 $18) 25. Qf3 (25. Bxd8 $2 Qxf1#) (25. Rf3 $2 Qd1+ {Back Rank} 26. Nxd1 Rxd1+) 25... Qxf3 26. Rxf3 Rd4 $11) (24. e6 f5 25. Bxd8 (25. axb3 $2 Rd3 $19) 25... Rxd8 $16) 24... Rxd8 ({Not} 24... Nd2 $2 25. Bf6 (25. e6 Rxd8 26. exf7+ Kg7 $11) 25... g5 (25... Nxf1 26. Qh6) 26. Rg1 $18) 25. Qh4 Qd3 26. Qf6 $40 {Repels Qd3xf1+. White attacks with force.} (26. Qf4 $5 Rf8 $8 (26... Qxc3 27. Qxf7+ Kh8 28. Qf6+ Kg8 29. Qxd8+ Kg7 30. Qf8#) 27. e6 $14) 26... Rf8 27. e6 Qc4 28. e7 {White wants to mate with Qf6-h8+!.} Re8 29. axb3 Qe6 30. Qxe6 fxe6 $16 {Endgame KRN-KR} 31. Ra1 a6 32. Ne4 Rxe7 {White is clearly better.} 33. Kg1 Rf7 34. Nc5 Kg7 35. Rf1 (35. Nxe6+ Kf6 36. Nc5 Ke5) 35... Re7 36. b4 e5 37. Kf2 b6 38. Nxa6 Ra7 39. Nb8 c5 40. bxc5 bxc5 41. Re1 c4 42. Nc6 ({Don't do} 42. Rxe5 Rf7+ 43. Ke3 Rb7 $18) 42... Ra6 43. Nxe5 c3 44. Rc1 Kf6 45. Nc4 {Weighted Error Value: White=0.04 (flawless) /Black=0.07 (flawless)} Ra2+ {Xboard adjudication. } 1-0
[/pgn]

An interesting (and playable) gambit, yet i don't see it so often in blitz games (at higher levels);
maybe because it requires quite some knowledge (at least more than your opponent) to play well.

Hereafter probably some P5 games again.

[jefk]

game nr 8

Starting with the Anderssen opening (1.a3) after the German chess master in the 19th century
https://en.wikipedia.org/wiki/Adolf_Anderssen
And soon going for a gambit again, the Reversed Scandinavian/Marshall gambit; although
after 4.Qxd4 it wouldn't be a real gambit. However, after the awesome new move 4.c3N!
we get a very interesting (blitz) game:

Note: with the f command, hovering over the pgn board, you can turn the board

[pgn]
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Patricia 5"]
[Black "Knightx"]
[Result "1-0"]
[PlyCount "70"]
[GameId "2221315140128796"]

1. a3 e5 2. d4 exd4 3. Nf3 (3. Qxd4 Nc6 4. Qa4 Nf6 5. Nc3 d5 6. Bg5 Be6 7. O-O-O Be7 8. e4 Nxe4 9. Bxe7 Qxe7 10. Nxe4 dxe4 11. Qxe4 O-O 12. Nf3 Rad8 {1-0 Nagy,G (2445)-Palczert,M (2349) Titled Tuesday intern op 28th Nov Early Chess.com INT blitz 2023 (10)}) 3... Nf6 {[#]} 4. c3 $146 !(4. Qxd4 c5 5. Qa4 Nc6 6. Nc3 d5 7. Bg5 d4 8. Ne4 Be7 9. Bxf6 gxf6 10. c3 f5 11. Ned2 O-O 12. cxd4 cxd4 13. g3 Bf6 14. Bg2 Re8 15. O-O {0-1 Eid,F (2352)-Abdyzhapar,A (2385) Asia Cup Abu Dhabi 2016 (2.1)}) 4... dxc3 5. Nxc3 Nc6 6. Bf4 d5 7. Nb5 Bd6 8. Nxd6+ {The position is equal.} cxd6 9. e3 O-O 10. Be2 Be6 11. Nd4 Rc8 12. O-O Ne5 13. Qb3 {White has compensation.} Qc7 14. Rad1 a6 15. Qb4 h6 16. h3 a5 17. Qa4 Bd7 18. Bb5 Be8 19. Rc1 (19. Qb3 {simplifies} Bxb5 20. Qxb5 Qc5 21. Qb3) 19... Qxc1 20. Rxc1 (20. Qxa5 $2 Qxb2 21. Bxe8 Rfxe8 $19) 20... Rxc1+ 21. Kh2 Nc4 22. Nf5 Bxb5 $1 23. Qxb5 Rd8 (23... Re8 $142) 24. e4 $16 {Discovered Attack. Dancing on a razor blade. White is more active.} (24. Qxb7 $6 Nd2 25. g4 (25. Bxd6 $2 Nf1+ 26. Kh1 Nxe3+ 27. Kh2 Nxf5 $19) 25... Nf3+ 26. Kg3 Ne1 $14) 24... Rc2 {[#]} 25. Qb3 $1 (25. exd5 $6 Nh5 $16) (25. Qxb7 Rxf2 26. Ne7+ Kh7 27. Nxd5 Nxd5 28. Qxd5 Rxf4 $17) 25... Rxb2 (25... Rxf2 26. Qg3 $18) 26. Qg3 Ne8 {[#]} 27. Nxg7 $1 {Hoping for Ng7-f5+. Remove Defender. White is clearly winning.} Rb3 (27... Nxg7 28. Bxh6 (28. exd5 f5 $15) 28... Kf8 29. Bxg7+ (29. Qxg7+ Ke8 $18) 29... Ke8 30. Bf6 (30. exd5 Nd2 $18) (30. Bxb2 Nxb2 31. Qg8+ Ke7 $18)) (27... Kh7 28. Bxh6) 28. Qg4 ({Resist} 28. Qxb3 Kxg7 29. exd5 (29. Qxb7 Nf6 $18) 29... Ne5) 28... Kh7 29. Nh5 Ne5 30. Qf5+ Kg8 31. Bxh6 Nd7 {Against Nh5-f6+} 32. Qg5+ Kh7 33. Bg7 {White threatens Qg5-h6+ and mate.} f6 34. Qf5+ Kg8 35. Qe6+ {Weighted Error Value: White=0.03 (flawless) /Black=0.43} Kh7 {1-0 Patricia 5.0-KnightX 4.5 Computer Chess Game DESKTOP-G2238OJ 2025 (9) Xboard adjudication. Mistake: --- Black=1 OK: White=10 Black=3 Best: White=1 --- Strong: White=1 Black=1} 1-0


[/pgn]

[jefk]

game nr 9

Indeed (as in other posting) it doesn't always have to be a spectacular sacrifice to make a good game.
For Black, i've seen quite some Benko gambit games where with P5 White was slowly crushed.

Here's a recent example (game 9)

14...Qa6 (offering queens exchange) is the novelty, not so spectacular, but it's interesting to see how the
Knightx4.5 (Gm level) is slowly crushed with a Black gambit, in a positional 'aggressive' (attacking) style,
justified by the Black dominance on the Queens side (with the f key you can flip the board)

[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.09.12"]
[Round "10"]
[White "KnightX 4.5"]
[Black "Patricia 5.0"]
[Result "0-1"]
[PlyCount "102"]
[GameId "2221321485185035"]
[EventDate "2025.??.??"]
[TimeControl "240+2"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. e4 Bxf1 8. Kxf1 d6 9. Nf3 Bg7 10. g3 Qb6 11. Kg2 O-O 12. a4 Na6 13. Qe2 (13. Nd2 Nb4 14. Qe2 Nc2 15. Ra2 Nd4 {Wards off Nc3-b5} 16. Qd3 Nd7 17. Nc4 Qa6 18. Rd1 Rfb8 19. Bg5 Rb4 20. Na3 Qb7 21. Qb1 Nb6 22. Nc2 Rb3 23. Nxd4 cxd4 24. Qc2 Rb4 25. a5 Nc4 {Threatens to win with ...h7-h6!.} 26. Ne2 Nxb2 27. Rxd4 Bxd4 (27... Rxd4 $15 28. a6 Qa7 29. Nxd4 Qxd4) 28. Nxd4 {0-1 Makarian,R (2552)-Nakamura,H (2778) Titled Tuesday intern op 28th Nov Early Chess.com INT blitz 2023 (11)}) 13... Nc7 14. Rd1 {[#] White is slightly better.} Qa6 $146 (14... Nd7 15. Bf4 Rfb8 16. Rd2 Ne5 17. Nxe5 Bxe5 18. Bxe5 dxe5 19. f4 Qd6 20. Rf1 f6 21. Qf2 exf4 22. gxf4 Rb4 {[#]} 23. e5 $1 Qd7 {0-1 Pacan Milej,K (2401)-Licznerski,L (2411) Krakow op-A 32nd 2021 (6)}) 15. Qc2 Rab8 16. Rb1 Nd7 17. Be3 Qa8 18. Bg5 f6 19. Be3 f5 20. Ng5 Nf6 21. Nb5 {[#] Deflection} (21. exf5 Nfxd5 22. Nxd5 Nxd5 $19) 21... Nxb5 22. axb5 Rxb5 23. Ne6 Rc8 {Prevents Ne6-c7.} 24. Nxg7 Kxg7 25. exf5 Nxd5 {( -> ...Nd5-f4+)} 26. Kg1 Rf8 27. fxg6 Nxe3 28. Qc3+ Kxg6 29. Qd3+ Rf5 30. Qxe3 Qf3 $40 {Black attacks.} 31. Qd2 Rb4 32. Re1 Rd4 (32... Qd5 {simplifies} 33. Qxd5 Rxd5 34. Rxe7 c4) 33. Qc2 e5 (33... Kf6 34. Re3 Qd5 35. Rbe1 e5) 34. Ra1 Qd3 (34... h5 {is more complex.} 35. Ra3 Qd5 36. Rf1 Rd2) 35. Qxd3 (35. Qe2 $17) 35... Rxd3 $17 {Endgame KRR-KRR} 36. Kf1 Kf6 {Black is more active.} 37. Ra8 h5 38. Ra7 c4 39. Ra8 Ke6 40. Rh8 Kd5 41. Rd8 Kc5 42. Re2 d5 43. Kg2 Kd4 44. Rd7 e4 45. Rc7 Rd1 46. Rc2 Kd3 47. Rc3+ Kd2 48. Rd7 Rc1 49. h3 Rxc3 (49... Re5 $142 50. f4 exf3+ 51. Rxf3 Rc2 52. Rf2+ Kd3 (52... Kc1 $2 53. Rxc2+ Kxc2 54. Kf3 $19) 53. Rxc2 Kxc2) 50. bxc3 $19 Kxc3 51. g4 {Quite a comeback for Black. Weighted Error Value: White=0.05 (flawless) /Black=0.01 (flawless)} Re5 {User adjudication} 0-1

Note how in the endgame the Black king first goes to the center and then to the other side of the board to enable
the rook capturing the White pawn on b2, thus getting a completely winning endgame with the three
remaining Black pawns crossing the center line.



[/pgn]

[jefk]

game nr 10

this time against a weak (club level) engine, and an uncommon gambit in the Anderssen opening 1.a3,
Prussian, Djengis gambit nr 72 (with 3.d3; 3.Nc3 would give Djengis gambit 74.
The Prussian gambit openings were (arguably) 'invented' here:

https://www.chess.com/blog/Duras-Anders ... ian-gambit

[pgn]
[Event "Computer Chess Game"]
[Site "DESKTOP-G2238OJ"]
[Date "2025.09.13"]
[Round "19"]
[White "Patricia 5.0"]
[Black "Ufim 8.02 weak=15"]
[Result "1-0"]
[Annotator "EAS-Tool: 4 PawnUnits Sacrifice found"]
[ECO "A00"]
[PlyCount "52"]
[GameId "2221635768803369"]
[EventDate "2025.??.??"]
[TimeControl "240+2"]

1. a3 d5 2. e4! ({Relevant:} 2. Nf3 Nf6 3. g3 c5 4. b4 cxb4 5. axb4 e6 6. Ba3 Bd6 7. Bg2 O-O 8. O-O e5 9. b5 Re8 10. c4 dxc4 11. Bxd6 Qxd6 12. Na3 {0-1 Carlsen,M (2833)-Gustafsson,J (2597) Titled Tuesday intern op 04th Feb Late Chess.com INT blitz 2025 (6)}) 2... dxe4 3. d3!? Nf6 4. Nc3 Bg4 5. Qd2 exd3 6. Bxd3 {[#]} e5 $146 ({Predecessor:} 6... g6 7. Qg5 Nc6 8. h3 Be6 9. Nf3 Nd5 10. Ne4 f5 11. Ng3 (11. Nc5 $11 {remains equal.} Bc8 12. O-O) 11... Qd6 {0-1 Faika,M (2147)-Nicolas Zapata,I (2249) Gibraltar Challengers-A 12th Caleta 2014 (2)}) 7. h3 Bh5 8. Qg5 {Black is slightly better.} Nbd7 9. Nge2 h6 10. Qg3 Qe7 11. Be3 Nc5 (11... Qe6 $15) 12. Bxc5 $14 Qxc5 13. O-O-O e4 14. b4 Qe7 (14... Qg5+ $14 15. Qxg5 hxg5 16. Nxe4 a5 (16... Nxe4 17. Bxe4 Bd6 18. Bxb7 $16)) 15. Bc4 $18 a5 $2 {[#]} (15... a6 {was necessary.}) 16. Rd5 $2 Bxe2 (16... axb4 $16 17. Re5 {Pin} bxc3) 17. Bxe2 {and Rd5-e5 should not be overlooked} axb4 18. Re5 {Pin} bxc3 {[#]} 19. Qxc3 $2 (19. Rxe7+ Bxe7 20. Qxg7 Rg8 21. Qxh6 Bxa3+ 22. Kd1 Ke7 $19) (19. Rd1 $1 $18) 19... c6 {[#]} 20. Rd1 $1 ({Much less strong is} 20. Rxe7+ Bxe7 21. Qe5 Kf8 $14) 20... Rxa3 21. Qb2 $40 {White goes for the king. White is much more active.} b5 $2 (21... Ra8 22. Kd2 (22. Rxe7+ Bxe7 23. Qxb7 Ba3+ 24. Kd2 O-O $14) 22... Qxe5 23. Qxe5+ Be7) 22. Bxb5 ({Less strong is} 22. Rxe7+ Bxe7 23. Qe5 Ra8 $16) 22... Nd7 23. Bxc6 Ra1+ 24. Qxa1 {White mates.} f5 25. Rxd7 {Pin} Kf7 26. Rexe7+ {Weighted Error Value: White=0.27 (precise) /Black=0.97} Bxe7 {Loses game} 1-0
[/pgn]

Note, this time analyzed with Obsidian instead of P5, so the weighted 'error value' for P5 isn't zero.
Also in the annotation there even sometimes are question marks given for certain White moves , nr 16 and 19
but this is only from the perspective of the conventional engine, later it sees that White goes for the king.
And then it's too late for Black.

Here's more about the awesome Anderssen opening
https://www.uscfsales.com/chess-blog/anderssen-opening/

Anderssen used it mostly as surprise weapon against players who knew as much as him
about openings as king's gambit or Evans gambit, and often with good results.
the article says the opening strictly speaking is not good, but that's nonsense.
It's just as 'good' as 1.e4 or 1.d4, backsolved eval in Chinese database 0.00. How you play it
in the middle game is key, with blitz, put in a spicy gambit, and your chances will increase;
if you're a strong chess player, that is.