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Hot Topic (More than 10 Replies) The Week in 4PA (with 4.f4) (Read 5261 times)
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Re: The Week in 4PA (with 4.f4)
Reply #20 - 12/18/22 at 00:25:46
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This was played twice by Baburin in the last olimpyad
He lost although he played against two players with 200 ELO more.
This variant, 13...h6 and 14...Qe8 is favoured by recent engines, e.g, Stockfish15
I think that h6 before is too prevent Bg5 if Qe8 is played on move 13.
Also, after 14...Qe8, 15. Bf4 targetting c7 appears "problematic". But I think Black can then play 15...Qe7 threatening e5 (and White caanot play d5 since e5 is hitting the bishop in f4)
I think this is  a variation worth analysing before "stating that the 4PA is killing the Alekhine" as I have seen in a few places
  
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Re: The Week in 4PA (with 4.f4)
Reply #19 - 12/16/22 at 16:25:12
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I noticed that the 4PA is being contested today at Sitges between Jorden van Foreest (about 2700) and Aravindh Chithambaram (about 2600).  After 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 de 6. fe Nc6 7. Be3 Bf5 8. Nc3 e6 9. Nf3 Be7 10. Be2 0-0 11. 0-0 f6 12. ef Bxf6 13. Qd2 the Indian GM played 13...h6 14. Rad1 Qe8. (The immediate 13...Qe8, which has been given as well met by 14. Bg5, has appeared in this thread.)
« Last Edit: 12/16/22 at 20:10:56 by kylemeister »  
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Re: The Week in 4PA (with 4.f4)
Reply #18 - 04/14/22 at 16:27:54
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I appreciate the work and continue to download the PGN and then import it into Chess Opening Wizard. I am a little surprised that I have not yet seen the following mainline:

1. e4 Nf6!? 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Nf3 Be7 10. d5!?

Perhaps by nature Alekhine players want to get off the beaten path.
  
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Re: The Week in 4PA (with 4.f4)
Reply #17 - 04/04/22 at 00:53:20
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TWIC 1429 (2022.03.28)

Summary - white scored 1.5/4.

No additional references this week.

#1 Newrkla - Grimm, TCh-AUT 2122 2nd Ost 2022

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 g6 6.Nc3 Bg7 7.Be3
7...Be6
  • 7...O-O 8.Nf3 Be6 9.Qb3 Davies move order

8.Qb3 (N)
  • 8.d5 Bc8 9.Nf3 Bg4 --4pa-twic1426 #1

8...O-O
  • 8...a5 --4 games in database.chessbase.com

9.Nf3 a5 10.Ng5 a4 11.Nxe6 axb3 12.Nxd8 Rxd8
13.Kf2

13...c5!?

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Probably too sharp.

14.dxc5 N6d7 15.cxd6 exd6 16.Be2 dxe5 17.axb3 Rxa1 18.Rxa1 exf4
19.Bxf4 Nc6 +=
(1/2:1/2, 54)


#2 Lagunov - Demin, Titled Tue, chess.com 2022.03.22

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Bf5 7.Nc3 e6 8.Be3 Bb4 9.Nf3 c5 10.a3 Bxc3+ 11.bxc3 Nc6 12.Be2 O-O 13.O-O
13...Na5 (N)
  • 13...Rc8 --4pa-twic1424 #3, 4pa-twic1428 #2


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14.dxc5
  • 14.Qe1 --1 game in database.chessbase.com
  • 14.Bg5 --1 game in database.chessbase.com
  • 14.d5 --1 game in database.chessbase.com
    : "?!" --Hort (1981), page 104 (14...Rc8! -/+)
  • 14.Nd2 --20 games in database.chessbase.com
    : 3 games including Bielczyk - Vaisman, Wroclaw 1972 --Hort (1981), page 104 see https://www.365chess.com/game.php?gid=2412153

14...Nbxc4 15.Bd4 Be4 16.Qe1 Bd5 17.Bd1 Nc6 18.Bc2 g6
  • 18...Bxf3 19.Rxf3 Nxd4 20.cxd4 Qxd4+ 21.Kh1 g6 -/+

After 18...g6 white managed to build up a winning attack, but allowed black to escape, and seems to have lost on time. (0:1, 34)


#3 Ljuboja - Novakovic, ch-SRB Semi-Final, Paracin 2022

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.f4 dxe5 6.fxe5 Nc6 7.Be3 Bf5 8.Nc3 e6 9.Nf3
9...Bb4 (N)
... has never really become popular --Burgess (1996), page 46
... scope for further investigation here --Bogdanov (2009), page 53
  • 9...Qd7 10.Be2 O-O-O 11.O-O Bb4!? transposes to this game
    • 11...Bg4 --4pa-twic1423 #4
    • 11...Kb8 --4pa-twic1424 #6

10.Be2 Qd7 11.O-O O-O-O!? cf. 9...Qd7
  • 11...Bxc3 12.bxc3 Na5 Tribuscheweki - Bastrikow, 1959 --Schwarz (1969), page 19
  • 11...Na5 --Schwarz (1969), page 32


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12.Bg5
  • 12.a3 --3 games in database.chessbase.com
  • 12.c5 --3 games in database.chessbase.com

12...Be7 13.Be3!?
Not a positive idea for white. (0:1, 39)


#4 Yuan_Qingyu - Donchenko, Titled Tue, chess.com 2022.03.22

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.f4 dxe5 6.fxe5 Nc6 7.Be3 Bf5 8.Nc3 e6 9.Nf3 Qd7 10.Be2 O-O-O 11.O-O Bg4
12.Ng5 (N)
  • 12.d5 --4pa-twic1423 #4

12...Bxe2 13.Qxe2 Nxd4 14.Bxd4 Qxd4+ 15.Kh1 +/-

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Despite having "lost" a center pawn with check, white retains the better game.

15...Qd2
  • 15...Nxc4 --1 game in database.chessbase.com
  • 15...Rd7 --2 games in database.chessbase.com

16.Nxf7 Qxe2 17.Nxe2 Bc5 18.Nf4 +-
(1:0, 25)
  
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Re: The Week in 4PA (with 4.f4)
Reply #16 - 03/26/22 at 18:35:31
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TWIC 1428 (2022.03.21)

Summary - white scored 0/2.

No additional references this week.

#1 Chyngyz - Petesch, Titled Tue, chess.com 2022.03.15

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.f4 dxe5 6.fxe5
6...e6 (N)

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I admit I have never seen this move before. It might be no more than a transposition, but changing the move order can sometimes induce a mistake, especially at fast time controls.

7.Be3
  • 7.Nf3 c5 8.Be3
  • 7.Nc3 c5 8.d5 exd5 9.cxd5 T.- 6...c5

7...c5 8.Nf3 cxd4 9.Nxd4
Some stats from database.chessbase.com:
  • 9.Bxd4 +1 =3 -5
  • 9.Qxd4 +2 =1 -2
  • 9.Nxd4 +1 =0 -1

9...Qh4+
  • 9...Nc6 --2 games in database.chessbase.com

10.Bf2 Qf4 11.Qe2?? Qc1+ -+
(0:1, 54)


#2 Caruana - Bortnyk, Rapid Swiss, chess.com 2022.03.19

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Bf5 7.Nf3 e6 8.Nc3 Bb4
9.Be2 (N)
  • 9.Bd3 c5 10.Bxf5 cxd4 --4pa-twic1426 #2
  • 9.a3?! Bxc3+ 10.bxc3 c5 11.Be2 Bogdanov move order

9...c5 10.a3 Bxc3+ 11.bxc3 Nc6 12.O-O
12...O-O has been played rather successfully --Bodganov

13.Be3 Rc8 14.Rc1 Na5 15.Nd2 Qd7

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About a similar position:
Quote:
Once again the issue is liable to depend on how far Black can get with his central counterplay before the axe descends on his king side.
--Eales/Williams (1973), page 18

16.h4 h6!?
The engine thinks this is best and equal, but it's also weakening.
  • 16...Na4 --1 game in database.chessbase.com

17.Qe1 Qa4 18.Qg3 Kh8 19.d5 Nbxc4 20.Nxc4 Nxc4 21.Bxh6!? gxh6
22.Rxf5
  • 22.Qf4 +=

22...exf5 =
The game saw lots of ups and downs...
(0:1, 79)
  
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Re: The Week in 4PA (with 4.f4)
Reply #15 - 03/21/22 at 00:50:00
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TWIC 1427 (2022.03.14)

Summary - white scored 3/6.

Added references:
  • Schwarz (1969) Aljechin- und Nimzowitsch-Verteidigung

#1 Maranhao - Toncheva, Titled Tue, chess.com 2022.03.08

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.f4
5...g6
6.Nf3 (N)
  • 6.Nc3 Bg7 7.Be3 Be6 --4pa-twic1426 #1

6...Bg7

7.a4!?

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  • 7.Be2 O-O 8.O-O Be6 9.Nbd2 --Davies (2001), page 128
  • 7.Nc3 Be6 8.d5 Bg4 cf. 4pa-twic1426 #1 (6.Nc3)

7...O-O!?
  • 7...a5 --1 game in database.chessbase.com

8.a5 N6d7 9.Be2 c5 10.O-O
  • 10.d5 dxe5 11.Nc3 Na6 12.O-O Nb4 13.Be3 exf4 14.Bxf4 Nf6 15.Be3 Na6 = Deep Shredder 13. One suspects this cannot be best play for either side.

10...cxd4 11.exd6 Nc6 12.dxe7 Qxe7

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It's the worst looking King's Indian Four Pawns Attack I have seen in a while. I changed the black pawn from d4 to d6, and the engine still preferred black a tiny bit.
(0:1, 23)


#2 Yi Xu - Hnydiuk, Titled Tue, chess.com 2022.03.08

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4
5...dxe5 6.fxe5 Nc6
7.Nf3

7...Bg4 8.Be3 e6 9.Be2 Bxf3
10.gxf3 (N)
  • 10.Bxf3? Nxc4 --4pa-twic1424 #4

10...Qh4+ 11.Bf2 Qf4 12.c5 Nd5

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13.Bb5
  • 13.Nc3 cf. Atalik - de Firmian, but with white to move

13...Be7 14.Nc3 O-O
  • 14...Rd8 --2 games in database.chessbase.com
  • 14...Ne3 15.Qd3 Bh4 =+ Deep Shredder 13

15.Nxd5 exd5 16.O-O f6 =
(1:0, 50)


#3 Nazari - Babazada, Titled Tue, chess.com 2022.03.08

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4
5...dxe5 6.fxe5 Bf5 7.Nc3 e6 8.Be3
8...Be7
Technically a new move for this series, but it's transpositional.
  • 8...Bb4 --4pa-twic1424 #2 and #3

9.Be2
  • 9.Nf3 O-O (9...Nc6) 10.Bd3 --Bogdanov (2009), page 50

9...O-O 10.Nf3 f6 11.O-O
  • 11.exf6 --4pa-twic1427 #6

11...Nc6 12.b3 (N)
  • 12.exf6 --4pa-twic1427 #5

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12...Qe8
  • 12...fxe5 --4 games in database.chessbase.com 
  • 12...Bb4 --1 game in database.chessbase.com

13.Qe1 fxe5
  • 13...Nb4 (thematic) 14.Rd1 Nc2 15.Qd2 Nxe3 16.Qxe3 (Bagirov is contemptuous of giving up the bishop pair in a similar position, but the engine still prefers white.) 16...fxe5 17.Nxe5 Nd7 18.g4 (no fear) 18...Bc2 19.Rxf8+ Bxf8 20.Rf1 Nxe5 21.Qxe5 Bd6 22.Qe3 += Deep Shredder 13

14.Nxe5 Nxe5 15.dxe5 Rd8 16.Nb5 a6 17.Nd4 Qg6 18.Nxf5
18...exf5?! +=
  • 18...Rxf5 close to equality
(1:0,27)


#4 Aaditya - San Thit Lwin, Titled Tue, chess.com 2022.03.08

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.f4
5...dxe5 6.fxe5 Nc6 7.Be3 Bf5 8.Nc3
  • 8.a3 idea Nb1-d2 --Schwarz (1969), pages 38-40

8...e6 9.a3 (N)
  • 9.Be2 Be7 10.Nf3 O-O 11.O-O f6 12.exf6 Bxf6 13.a3

9...Be7 10.Nf3 f6 11.exf6 Bxf6 12.Be2 O-O 13.O-O

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Black has tried 9 different moves in database.chessbase.com .

13...Bg4
  • 13...Qe7 most popular 14.c5 Nd5 15.Nxd5 exd5 16.Bf2 Rae8 17.Bd3 Bxd3 = (1:0,47) Aaditya - San Thit Lwin, Titled Tue, chess.com 2022.01.18 (17...Be4 =+)
  • 13...Qd7 second-most popular, engine suggestion
  • 13...Qe8 --4pa-twic1427 #5

14.d5 Bxf3
  • 14...exd5 --1 game in database.chessbase.com (by transposition from 8.a3)

15.Bxf3 Nxc4 16.dxc6? Nxe3
(0:1,27)


#5 Desideri - Hnydiuk, Titled Tue, chess.com 2022.03.08

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4
5...dxe5 6.fxe5 Nc6 7.Be3 Bf5 8.Nc3 e6
9.Be2 Be7 10.Nf3 O-O 11.O-O f6 12.exf6 Bxf6
13.a3
A new move but not a new position.
It was already reached by transposition in 4pa-twic1427 #4.
  • 13.Qd2 --4pa-twic1427 #6

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13...Qe8 (N)
  • 13...Bg4 --4pa-twic1427 #4

14.d5?! =+
  • 14.Qe1 --1 game in database.chessbase.com
  • 14.Bf4 --1 game in database.chessbase.com

14...exd5 15.Bxb6 axb6 16.Qxd5+ Kh8 17.Qxf5 Bxc3 18.Nd4?? Bxd4+
0-1


#6 Sanal - Bashirli, Titled Tue, chess.com 2022.03.08

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4
5...dxe5 6.fxe5 Bf5 7.Be3 e6 8.Nc3
8...Be7
Already seen in 4pa-twic1427 #3.
9.Be2 O-O 10.Nf3 f6 11.exf6 Bxf6 12.O-O Nc6 13.Qd2
  • 13.a3 --4pa-twic1427 #5

13...Qe7 (N)
  • 13...Qe8 --4pa-twic1425 #3


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14.Rad1 Rad8 15.h3

Most sources give only 15.Qc1 here. Schwarz (1969), Bagirov (1974), and Hort (1981) give the same three moves: 15.Qc1, 15.c5, and 15.Qe1.

15...h6 16.b3 Qe8
  • 16...Kh8 --1 game in database.chessbase.com
  • 16...Nb4 --1 game in database.chessbase.com

17.Qe1 Rf7 18.Qg3 Kh8?! 19.Ne5 Nxe5? +/-
(1:0,49)
  
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Re: The Week in 4PA (with 4.f4)
Reply #14 - 03/18/22 at 15:17:14
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FreeRepublic wrote on 03/18/22 at 14:17:53:
"Black's point is seen after10.Nf3 Bb4! when he gets some pressure against our center. This gives White a decent advantage too, but it is extremely unnecessary.11.d6 takes away all of Black's fun, when the position is objectively lost already due to our massive space advantage," IM Mihajlov.

I suppose 11.d6 here is a typo for 10.d6, which was mentioned in the first post, TWIC 1423 #2. I don't know the theory after 10.d6, but I also don't remember the theory after 10.Nf3 Bb4 (as white I won a game there maybe 30 years ago), so probably today I would play 10.d6 and see what happens.

My intention here is not to regurgitate anybody else's analysis, but merely to keep an eye on current events. So far it seems most whites and blacks don't know much theory, either that or they don't agree with it.
  
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Re: The Week in 4PA (with 4.f4)
Reply #13 - 03/18/22 at 14:17:53
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an ordinary chessplayer wrote on 03/03/22 at 01:43:37:
#2 Magold - Chis, ch-ROU, Eforie Nord 2022
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 c5 7.d5 e6 8.Nc3 exd5 9.cxd5 c4
10.a3 (N)
  • 10.Nf3 Bb4 --4pa-twic1423 #2
  • 10.Be3 Bb4 --4pa-twic1424 #1


The Chessable Short and Sweet (free) version of The Energetic 1. e4, by IM Mihajlov reaches this position. He continues with 10d6!

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"Black's point is seen after10.Nf3 Bb4! when he gets some pressure against our center. This gives White a decent advantage too, but it is extremely unnecessary.11.d6 takes away all of Black's fun, when the position is objectively lost already due to our massive space advantage," IM Mihajlov.

Curiously enough, though the position is declared won, the Chessable format would drill you on memorizing another ten moves. Semi-snide commentary aside, the diagram shows a remarkable position. The 4Ps Attack certainly is not dull.
  
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Re: The Week in 4PA (with 4.f4)
Reply #12 - 03/17/22 at 13:37:04
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This is probably old news to Alekhine aficionados, but I notice that Gawain Jones's Coffeehouse Repertoire also recommends the four pawns attack against the Alekhine Defense.
  
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Re: The Week in 4PA (with 4.f4)
Reply #11 - 03/16/22 at 14:05:10
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There is also a Short and Sweet (free) version of The Energetic 1. e4, which contains some 4Ps analysis.

Also. I do not own either of the two e-books I mentioned. I mention them because they are recent titles. I am familiar with the two authors and I think they have done good work in the past.
  
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Re: The Week in 4PA (with 4.f4)
Reply #10 - 03/16/22 at 13:53:25
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Thanks for the resources. This is exceptionally thorough and complete.

I have always wanted to play the 4 pawns as it is White's most aggressive line. It was the first line I looked at and played. Then I switched to less demanding lines. Perhaps I will return to the 4Ps.

Of possible interest:
The Modernized Alekhine Defense
https://forwardchess.com/product/the-modernized-alekhine-defense?section=Product...
The Energetic 1. e4
https://www.chessable.com/the-energetic-1-e4-part-1/course/83384/
  
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Re: The Week in 4PA (with 4.f4)
Reply #9 - 03/13/22 at 00:34:52
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TWIC 1426 (2022.03.07)

Summary - white scored 1/2.

Added references:
  • Ganzo (1957) La Defensa Alekhine 2ed
  • Christiansen/Raingruber/Joseph (1988) Alehkine's Defense as White
  • Nunn/Burgess/Gallagher (1999) Nunn's Chess Openings


#1 Allahverdiyeva - Hebbinghaus, 2nd Gran Canaria, lichess.org 2022.02.27
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4
5...g6 (N)
  • 5...dxe5 --all other games so far

6.Nc3 Bg7 7.Be3
7...Be6
  • A similar idea is 7...O-O 8.Nf3 Be6 (?! Hort, !? Burgess, ! Davies)
    9.d5? Bg4 (Black is a whole tempo ahead of this game) 10.exd6 exd6, idea 11...Re8 --Davies (2001), page 129


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8.d5 "!" --Bogdanov (2009), page 43 (no further moves)
8...Bc8
  • 8...Bf5 9.Nf3 Bg4 transposes

9.Nf3 Bg4 10.c5
  • 10.h3 --3 games in database.chessbase.com
  • 10.Be2 --1 game in database.chessbase.com

10...dxc5
  • 10...N6d7 --4 games in database.chessbase.com

11.Bxc5
  • About the same is 11.h3 Bxf3 12.Qxf3 c6 13.O-O-O += Deep Shredder 13
    13...Nxd5 14.Nxd5 cxd5 15.Rxd5 +/-. Black would clearly like to be castled already. (cf. 7...O-O)

11...O-O 12.h3 Bxf3 13.Qxf3 N8d7 14.Bf2 e6 15.O-O-O Qc8

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16.Qg4
  • The engine recommends just getting on with it: 16.h4 Nxd5 17.Nxd5 exd5 18.h5 Deep Shredder 13

16...exd5 17.Nxd5 Nxd5 18.Rxd5 Nb6 19.Qxc8 Raxc8 20.Rc5
+= Bishop pair. (1:0, 24)


#2 Maranhao - Bortnyk, Titled Tue, chess.com 2022.03.01
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Bf5
7.Nf3 (N)
  • 7.Nc3 e6 8.Be3 (8.Nf3) 8...Bb4 --4pa-twic1424 #2 and #3

7...e6 8.Nc3
  • 8.Bd3?! Bg4! --Hort (1981), page 101
    (8...c5 acceptable --Bogdanov (2009), page 49 : Bogdanov seems more trustworthy here)

8...Bb4 "?!" --Bogdanov (2009), page 49
9.Bd3

"Variante FAHRNI-RETI" --Ganzo (1957), page 14
  • "+/-" Nunn/Burgess/Gallagher (1999), page 132 (no further moves)
  • "!" --Davies (2001), page 124
  • "!" --Bogdanov (2009), page 50


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9...c5
  • 9...Bxd3 is Hort's main line, based on Ivkov - Timman, IBM 1974 --Hort (1981), pages 102-103, see https://www.chessgames.com/perl/chessgame?gid=1063757 :
    but Christiansen/Raingruber/Joseph give 9...Bxd3?
  • 9...Bg4! Hort : curiously, all Hort's variations lead to +/-
  • 9...Bg6?! Hort

10.Bxf5
  • 10.O-O (?! Hort, ! Davies) 10...cxd4 11.Ne4 (dangerous attack --Davies) 11...Nc6 12.Bg5 (!? Hort) 12...Qd7
    (12...Qc7 13.a3!? "+/- unclear" Honfi - Hazai, Hungary Final 1974 --Hort (1981), page 102, see https://www.365chess.com/game.php?gid=2432607)
    13.a3 Bxe4 14.Bxe4 Be7 15.Bxe7 "etc." --Ganzo (1957), pages 14-15
  • 10.d5! --Christiansen/Raingruber/Joseph (1988), page 21 : and they may be right

10...cxd4



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11.Qxd4
  • 11.Nxd4 --4 games in database.chessbase.com
  • 11.Bg5 --3 games in database.chessbase.com
  • 11.Qb3 --3 games in database.chessbase.com
  • 11.Be4 --1 game in database.chessbase.com
  • 11.O-O --1 game in database.chessbase.com

11...Qxd4 12.Nxd4 exf5 13.Nxf5 O-O 14.O-O Nxc4
=+ Thematic - weak white pawn on e5. But the engine thinks black's edge is small.
(0:1, 21)
  
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Re: The Week in 4PA (with 4.f4)
Reply #8 - 03/03/22 at 01:43:37
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TWIC 1425 (2022.02.28)

Summary - white scored 3/3.

Added references:
  • Bagirov (1973) Alekhine's Defence
  • Eales/Williams (1973) Alekhine's Defence
  • Davies (2001) Alekhine's Defence
  • Sveshnikov/Sveshnikov (2015) A Chess Opening Repertoire for Blitz and Rapid


#1 Bortnyk - Grunberg, Titled Tue, chess.com 2022.02.22
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 c5 7.d5
7...g6 (N)
  • 7...e6 --4pa-twic1424 #1

8.Nf3?!
  • 8.Nc3 Bg7 9.Bf4 O-O
    This line with 7...g6 is advocated in Sveshnikov/Sveshnikov (2015). They give four games :
    • 10.Nf3 Bg4 Panarin - Polaczek, Playchess 2005 --pages 78-80
    • 10.Be2 e6 Moraru - Grunberg, Bucharest 1999 --pages 86-87
    • 10.Qd2 e6 11.O-O-O Decoster - Maddens, Ghent 2012 --pages 80-84
    • 10.Qd2 e6 11.d6 Olivier - Cornette, Aix-les-Bains 2003 --pages 84-86

8...Bg4 9.Bd3 Bg7 10.Qe2

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10...Bxf3
  • 10...e6 also makes sense --2 games in database.chessbase.com
  • 10...N8d7 --1 game in database.chessbase.com

11.gxf3 e6 12.d6 Qh4+ 13.Kd1 Nc6 14.f4 Nd4 15.Qg2 Qh5+
Black goes for the pawn, but I think with white's king on d1 it's not logical to trade queens here.
  • 15...O-O -/+
  • 15...f6 -/+

16.Be2 Nxe2 17.Qxe2 Qxe2+ 18.Kxe2 Nxc4
Black has some difficulties consolidating. It's roughly equal.
(1:0, 55)


#2 Magold - Chis, ch-ROU, Eforie Nord 2022
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 c5 7.d5 e6 8.Nc3 exd5 9.cxd5 c4
10.a3 (N)
  • 10.Nf3 Bb4 --4pa-twic1423 #2
  • 10.Be3 Bb4 --4pa-twic1424 #1

10...Bc5 11.Nf3 Bg4
  • 11...O-O Vetemaa - Shabalov, USSR 1986 --Davies (2001), pages 118-119
    and Burgess (1992), pages 101-104

12.Bf4
  • 12.Be2 N8d7 Al Kindji - Wians, W Jr Ch 1985 --Burgess (1992), page 104
    (12...O-O --Burgess)

12...Na6!?
  • 12...O-O --3 games in database.chessbase.com


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13.h3 Bh5 14.g4 Bg6 15.Qd2 O-O 16.O-O-O Qd7?
Your engine can find an improvement here just as easily as mine can.
(1:0, 47)


#3 Kobalia - Avila Pavas, Titled Tue, chess.com 2022.02.22
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6 7.Be3 Bf5 8.Nc3 e6
9.Be2 (N)
  • 9.Nf3 Qd7 --4pa-twic1424 #6

9...Be7 10.Nf3 O-O 11.O-O f6 12.exf6 Bxf6 13.Qd2 Qe8

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14.Rad1
  • 14.Bg5 "!?" (later) "In all probability, white should pin his hopes in this variation onto the 14th move, 14.Bg5." --Bagirov
    14.Bg5 "!" Eales/Williams, Hort, Burgess
  • 14.c5 "is also encountered" --Bagirov
    14.c5 "?!" --Hort (1981), page 130

14...Rd8 15.Qc1
  • 15.Qe1 Pelitov - Tsonov, Sofia 1966 --Bagirov (1973), page 64

15...Bg4
  • 15...Qg6 16.Kh1 (Does white need to play this?) and now:
    • 16...Bg4?! worse (than 16...Rd7) --Bagirov 17.Bd3 Qh5 18.Ne2 Qe8 19.Be4 initiative, Suetin - Korchnoi, USSR ch 20th 1952 --Bagirov (1973), page 65
    • 16...Rd7
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      Quote:
      White can meet the pressure on his d-pawn by doubling rooks, but then his piece coordination is ruined and all black's pieces will be superbly mobilized for play in the center. Such a possibility has already been examined (13...Qe7, Kostro - Georghiu, Ol 18th 1968), so we will take a new path here.
      --Bagirov

      17.d5 Ne5 .. =+ Ignatev - Zhitenev, Moscow 1963 --Bagirov (1973), page 65
    • 16...Kh8 17.Bf2! Rd7 18.Qe3 Bg4 19.Bh4! += Suetin - Rodriguez, Havana 1969 --Eales/Williams (1973), page 25

16.Ne4 Be7 17.a3 Qg6 18.Ng3 Bf6 19.Bd3 Qe8 =

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Black is fine. This should be compared with Suetin - Korchnoi above.
20.Qb1 g6 21.Ne4 Bg7 22.Neg5 Bxf3
  • 22...Nxd4 with same idea is possibly a better move order

23.Nxf3 Nxd4
(1:0, 40)
  
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Re: The Week in 4PA (with 4.f4)
Reply #7 - 03/03/22 at 00:17:23
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an ordinary chessplayer wrote on 02/26/22 at 01:16:03:
Edited:
Forgot to summarize, white scored 2/6. In all six games TWIC mistakenly had WhiteElo equal to BlackElo, so it's hard to say why the score was like that.


I figured out this is a bug in the chess software I am using to annotate the games. When I save the game it makes the two Elos the same. I will try to pay attention so that doesn't happen going forward, but I'm not going backwards to fix that for the two previous weeks.
  
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Re: The Week in 4PA (with 4.f4)
Reply #6 - 02/27/22 at 01:06:47
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Yes I agree. In the attachment I am simply passing through all the pgn header fields that TWIC provides. Time control is not one of them. I don't provide all those fields in the post, because I am selectively lazy. But if they had time control, I would add "blitz", "rapid", or "classical". That's if I noticed, which I might not.
  
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