Dutch Defense Opening Theory SHOCKER!

[Event “Round 6: Pierre Goosen – Andrew Southey”]
[Site “https://lichess.org/study/QxFUfJlF/MphMaOKh”%5D
[White “Pierre Goosen”]
[Black “Andrew Southey”]
[UTCDate “2022.05.11”]
[Opening “Dutch Defense”]
1.d4 f5 2.Nf3 g6 3.g3 Bg7 4.Bg2 d6 5.O-O Nf6 6.b3 O-O 7.Bb2 c6 8.c4 Na6 9.Qc2 Qe8 10.Nbd2 h6 11.Rfe1 Qf7 12.a3 Nc7 13.Nh4 e6 14.f4 g5 15.Nhf3 Qh5 16.Kf2 Ng4+ 17.Kg1 Ne3 18.Qd3 Nxg2 19.Kxg2 Ne8 20.e4 fxe4 21.Qxe4 gxf4 22.Nh4 fxg3 23.hxg3 Nf6 24.Qg6 Bd7 25.Qxh5 Nxh5 26.Ne4 c5 27.Rad1 Bc6 28.d5 Bxb2 29.dxc6 bxc6 30.Nxd6 e5 31.Ng6 Rf6 32.Nxe5 Bd4 33.Ne4 Bxe5 34.Nxf6+ Bxf6 35.Rh1 Ng7 36.Rxh6 Bd4 37.Rxc6 Nf5 38.Re1 Ne3+ 39.Kh3 Kg7 40.g4 Rf8 41.g5 Rf3+ 42.Kh2 Nf1+ 43.Kg2 Rf2+ 44.Kh3 1/2-1/2
https://lichess.org/broadcast/south-african-closed-championship-seniors/round-6/QxFUfJlF

1.d4 f5 2.Nf3 (Stockfish 14 @depth 52 plays the game move, but in a real SHOCKER one sees SF 15 will play 2 e3!

Position after Stockfish 15 recommended 2 e3

The exclam is for the shock value because the ChessBaseDataBase shows 2 e3 has only been attempted in 23 games. I kid you not… White has scored 63% against 2387 opposition, which is higher than any other move, although the sample size is rather limited. If you play the Dutch defense you simply MUST be prepared for the move 2 e3 because after this is posted every player and his brother will be playing the move, sister. The move played in the game, 2 Nf3, has scored 56% versus 2406 oppo. The most often played move has been 2 g3, with 8973 games which have scored 59% against a hypothetical player rated 2436) 2…g6 (SF 14.1 plays 2…Nf6) 3.g3 (SF 14.1 plays 3…Nc3) 3…Bg7 (SF 14.1 plays 3..Nf6) 4.Bg2 d6 (SF 14 plays the game move, but SF 14.1 will play 4…Nf6) 5.O-O (The latest version of Stockfish shown at the CBDB is the now antiquated SF 11. I kid you not…@depth 43 it plays either 5 Nc3 or 5 c4. Fritz 16 @depth 29 plays 5 c4) 5…Nf6 6.b3 (SF 14.1 @depth 44 plays 6 c4; SF 220422 will, given the chance, play the move made in the game) 6…O-O (In this position castles has been played in 1206 games, yet two different Stockfish programs, 14.1 @depth 45, and 220422 @depth 35 both play 6…a5, a move having been attempted in only 4 (FOUR!) games. In those games against opponents averaging 2513 ELO points it has held White to only 38%. The CBDB shows that six different moves have been played in only 18 (EIGHTEEN!) games) 7.Bb2 c6 (There are 626 examples of this move contained in the CBDB and it shows a 62% score; the second most often played move has been 7..Qe8 with 594 examples and 57%; next comes 7…Ne4 with 329 games and 59%. SF 081121 @depth 50 plays 7…e6; SF 220422 @depth 41 will play 7…a5; with SF 14.1 @depth 56 playing 7…Ne4) 8.c4 (SF 14.1 will play the game move, a departure from SF 14 which preferred the second most often played move of 8 Nbd2. Check this out, SF 061121, given the chance, will play 8 a3, which will, maybe, someday be a TN if and when it is played by a titled player) 8…Na6 (This has been the most often played move and it was the choice of SF 10 [TEN?!] resulting in a 60% result versus 2417 opposition. SF 14.1 plays 8…a5 @depth 46 and it has held White to only 51%) 9.Qc2 (SF 14 @depth 44 will play the second most often played move [154 games] 9 Nbd2) 9…Qe8 (SF 14.1 and Komodo both play 9…Qc7) 10.Nbd2 (The CBDB shows Deep Fritz @depth 21 will play the game move, but Houdini 6.02 @depth 25 will play 10 a3. There is only one game with the move contained in the CBDB) 10…h6 11.Rfe1 (11 Rae1 has been the most often played move with 20 games in the CBDB which have scored an astounding 78% versus 2474 oppo; the second most popular move, 11 a3 has been seen in 15 games, scoring 57%, and it is the choice of Fritz 15 @depth 16, which is pretty darn shallow, is it not? SF 14 @depth 33 would play 11 Nh4, and it woulda been a TN if’n it had ever been played…SF 14.1 @depth 24 will play 11 Bc3. In the 5 games at the CBDB is has only scored 40%, albeit against 2489 oppo) 11…Qf7 (SF 8 @depth 18 and Komodo 13.2 @depth 26 both play the move played in the game, but SF 14.1 @depth 17 will play 11…g5) 12.a3 (SF 8 @depth 17 will play 12 Bc3, as will the SF program at LiChess [https://lichess.org/broadcast/south-african-closed-championship-seniors/round-6/QxFUfJlF]. SF 160215 @depth 17 will play a new move, 12 Rec1. Deep Fritz, playing the CBDB “How low can you go?” limbo, @depth 15 will play 12 Bc3. Blind squirrel? Acorn?)

Nikola Stajcic, (2302) vs Martin Riedner (2169)
Event: Vienna op 14th
Site: Vienna Date: 08/19/2003
Round: 4
ECO: A81 Dutch defence
1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.b3 Bg7 5.Bb2 O-O 6.Nd2 c6 7.Ngf3 d6 8.O-O Na6 9.c4 Qe8 10.Qc2 h6 11.Rfe1 Qf7 12.a3 Bd7 13.Nh4 Nh5 14.e4 f4 15.e5 g5 16.Nhf3 Bf5 17.Qc1 g4 18.Nh4 f3 19.Bf1 dxe5 20.Nxf5 Qxf5 21.dxe5 Nc5 22.Qb1 Rad8 23.Qxf5 Rxf5 24.Bc3 Nd3 25.Bxd3 Rxd3 26.Rac1 Bxe5 27.Bxe5 Rxd2 28.Re4 Kf7 29.Bc3 Rd3 30.Rxg4 Nf6 31.Rd4 Rxd4 32.Bxd4 c5 33.Be3 h5 34.h3 Nd7 35.Rd1 Ke6 36.g4 hxg4 37.hxg4 Rf8 38.g5 b6 39.Kh2 Ne5 40.Kg3 Kf5 41.Rd5 e6 42.Rd1 Nf7 43.Kxf3 Nxg5+ 44.Ke2 Rf7 45.f3 Rh7 46.Bxg5 ½-½
https://www.365chess.com/game.php?back=1&gid=98078&m=24

Vilmos Balint (2252) vs Andres Gallego Alcaraz (2523)
Event: FSGM April 2022
Site: Budapest HUN Date: 04/02/2022
Round: 1.1
ECO: A80 Dutch
1.d4 f5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7 5.b3 d6 6.Bb2 O-O 7.O-O c6 8.c4 Qe8 9.Qc2 Na6 10.Nbd2 h6 11.Rfe1 Qf7 12.Nh4 Nh5 13.e3 e5 14.dxe5 dxe5 15.e4 f4 16.Ndf3 Re8 17.Rad1 g5 18.Nf5 Bxf5 19.exf5 e4 20.Rxe4 Rxe4 21.Bxg7 Nxg7 22.Qxe4 Re8 23.Qd4 Nxf5 24.Qxa7 g4 25.Nh4 Nxh4 26.gxh4 f3 27.Bf1 c5 28.Qb6 Kg7 29.h5 Re7 30.Qd6 Nb4 31.Qxc5 Nc6 32.b4 Ne5 33.Re1 Qf6 34.Qd4 Qg5 35.Qc5 Qf6 36.b5 Kf7 37.Qd5+ Qe6 38.Rxe5 1-0
https://www.365chess.com/game.php?back=1&gid=4340832&m=24

Nenad R Jovanovic (2318) vs Aurelian Ciobanu (2290)
Event: Bucharest-B
Site: Bucharest Date: ??/??/2000
Round: 2
ECO: A04 Reti opening
1.Nf3 d6 2.d4 g6 3.g3 Bg7 4.Bg2 f5 5.c4 Nf6 6.b3 O-O 7.Bb2 c6 8.O-O Qe8 9.Qc2 Na6 10.a3 h6 11.Nbd2 d5 12.Ne5 g5 13.e3 Be6 14.f3 Nd7 15.f4 Nf6 16.fxg5 hxg5 17.Rxf5 Bxf5 18.Qxf5 Bh6 19.cxd5 cxd5 20.Bxd5+ Nxd5 21.Qe6+ Kg7 22.Qxd5 b6 23.Qe4 Rd8 24.Rc1 Kg8 25.Qg4 e6 26.Ne4 Rf5 27.Nc6 Rdd5 28.Nd2 Rd6 29.Ne5 Rxe5 30.Nc4 Rxe3 31.Nxd6 Qd7 32.Qh5 Kh7 33.Rf1 1-0
https://www.365chess.com/game.php?back=1&gid=580126&m=22

Raine Heuer vs Tom E Wiley (2273)
Event: Bayern-chI Bank Hofmann 6th
Site: Bad Wiessee Date: 10/26/2002
Round: 1
ECO: A80 Dutch
1.d4 f5 2.Nf3 Nf6 3.g3 g6 4.b3 Bg7 5.Bb2 O-O 6.Bg2 d6 7.O-O Qe8 8.c4 c6 9.Qc2 Na6 10.a3 h6 11.h4 Qf7 12.e3 Be6 13.Nbd2 Rab8 14.b4 b5 15.Rac1 Rfc8 16.Qd3 Nc7 17.c5 Bd5 18.Nh2 Bxg2 19.Kxg2 d5 20.Rce1 Ne6 21.f3 Nh5 22.g4 Nhf4+ 0-1
https://www.365chess.com/game.php?back=1&gid=281440&m=22