I've now turned this into a blogpost...

https://200opengames.blogspot.com/2023/06/081-nah.html

Kerangali wrote on 06/18/23 at 18:41:14:


No, this is IM Mark Timmermans. The other is Gert Jan Timmerman, who has played the Jaenisch as well – over the board anyway, not in the World CC Championship.

As for the opening, all openings are harder to play without a computer – but the Jaenisch is not especially hard if you know what you're doing. In particular, there's nothing hard about the position after 12...Qc6.

[Event "Titled Tue 16th May Late"]
[Site "chess.com INT"]
[Date "2023.05.16"]
[Round "5"]
[White "Naroditsky, D"]
[Black "Timmermans, M"]
[Result "1-0"]
[ECO "C63"]
[WhiteElo "2618"]
[BlackElo "2392"]
[PlyCount "37"]
[EventDate "2023.05.16"]
[EventType "swiss (blitz)"]
[EventRounds "11"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 fxe4 5. dxe4 Nf6 6. O-O d6 7. Bc4 Na5 8. Qd3 Be7 9. Nc3 Nxc4 10. Qxc4 Qd7 11. Ng5 Rf8 12. f4 h6 13. Nf3 exf4 14. e5 d5 15. Qd3 Ne4 16. Nxd5 Bc5+ 17. Kh1 Nf2+ 18. Rxf2 Bxf2 19. e6 1-0

Tony gives this game in the June 2023 1.e4 e5 update and says the line "is tempting for White as Black can quickly find himself in trouble (...) if he doesn't know exactly what he is doing." And the game is some evidence of that.

Naroditsky goes further and claims that 7.Bc4 "basically busts the line", before qualifiying that to "the engine always finds some ways to stay alive, but from a practical point of view it's insanely hard to play."
https://www.youtube.com/watch?v=KITh_RI_tLo

Certainly 7 Bc4 is challenging, but as for the line in the game... As I wrote in my book: "if 12 f4 then 12...Qc6!". This is rather more than staying alive. White has absolutely nothing here. I'd actually prefer to be Black with the two bishops. And ...Qc6 is not really very hard to find. Except perhaps if you're surprised by the position is an online blitz game.