In this mornings round in the Reyjkavik Open Simon Williams played the Boor Attack in the Exchange Slav as white against Anastasiya Rakhmangulova:

[fen ""]
[Startply "9"]

1.d4 d5 2.c4 c6 3.cxd5 cxd5 4.Nc3 Nf6 5.f3 e6 6.e4 dxe4 7.fxe4 Nc6 8.Nf3 Bb4 9.Bd3 Ba5 10.e5 Nd5 11.O-O Nxc3 12.bxc3 Bxc3 13.Rb1 h6 14.Ba3 a5 15.Qa4 Bd7 16.Rxb7 Nxd4 17.Nxd4 Bxa4 18.Nxe6 Qh4 19.Rfxf7 Bb4 20.Rf8+ {20... Rxf8 21. Bg6+ Rf7 22. Bxf7#}

I've never heard of this or seen it before. What are the plans and ideas?

In Friday morning's round (31st March 2023) in the Reyjkavik Open Simon Williams played the Boor Attack in the Exchange Slav, characterized by 5. f3 [Ben Finegold: "Never play f3"], as white against Anastasiya Rakhmangulova:

[Title "Simon Williams - Anastasiya Rakhmangulova, Reyjkavik 2023"]
[fen ""]
[Startply "9"]

1.d4 d5 2.c4 c6 3.cxd5 cxd5 4.Nc3 Nf6 5.f3 e6 6.e4 dxe4 7.fxe4 Nc6 8.Nf3 Bb4 9.Bd3 Ba5 10.e5 Nd5 11.O-O Nxc3 12.bxc3 Bxc3 13.Rb1 h6 14.Ba3 a5 15.Qa4 Bd7 16.Rxb7 Nxd4 17.Nxd4 Bxa4 18.Nxe6 Qh4 19.Rfxf7 Bb4 20.Rf8+ {20... Rxf8 21. Bg6+ Rf7 22. Bxf7#}

I've never heard of this or seen it before. What are the plans and ideas?

I'm looking for answers with concrete lines not general, boilerplate platitudes.

In this mornings round in the Reyjkavik Open Simon Williams played the Boor Attack in the Exchange Slav as white against Anastasiya Rakhmangulova:

[fen ""]
[Startply "9"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. f3

I've never heard of this or seen it before. What are the plans and ideas?

In this mornings round in the Reyjkavik Open Simon Williams played the Boor Attack in the Exchange Slav as white against Anastasiya Rakhmangulova:

[fen ""]
[Startply "9"]

1.d4 d5 2.c4 c6 3.cxd5 cxd5 4.Nc3 Nf6 5.f3 e6 6.e4 dxe4 7.fxe4 Nc6 8.Nf3 Bb4 9.Bd3 Ba5 10.e5 Nd5 11.O-O Nxc3 12.bxc3 Bxc3 13.Rb1 h6 14.Ba3 a5 15.Qa4 Bd7 16.Rxb7 Nxd4 17.Nxd4 Bxa4 18.Nxe6 Qh4 19.Rfxf7 Bb4 20.Rf8+ {20... Rxf8 21. Bg6+ Rf7 22. Bxf7#}

I've never heard of this or seen it before. What are the plans and ideas?