In my opinion, SF-NNUE got the idea of Anand and NNUE played a more aggressive line planning to ALSO EXCHANGE its R to a N.Thomas Lagershausen wrote: ↑Sun Aug 23, 2020 4:33 pm Be thankfull.
The position from Anand against Kasparov is the unsolved position you looked for.
It is clear that current Sf-NNUE is too weak to understand it.
Nevermind.
Idea of Anand is to play Rd5 exchange sac but black can try to avoid the NxR line which means Anands line is a bit passive compare it
to the plan of SF-NNUE where in this monster is trying to play even more aggressive chess by playing Rf1 then capture with Rxf6. See one of the variation posted above:
[pgn]
[Event "Computer chess game"]
[Site "Talkchess"]
[Date ""]
[Round "?"]
[White "Anand"]
[Black "Kasparov"]
[Result "*"]
[BlackElo "2400"]
[Time "00:56:09"]
[WhiteElo "2400"]
[TimeControl "900+10"]
[SetUp "1"]
[FEN "r3rbk1/1p3ppp/1B2qn2/PQ2p3/2P1P3/5B1P/6P1/1R1R3K w - - 0 1"]
[Termination "unterminated"]
[PlyCount "63"]
[WhiteType "human"]
[BlackType "human"]
1. Rf1 Rec8 2. c5 Qd7 3. Qb4 h6 4. Rbc1 Qd3 5. Rfe1 Qd7 6. Red1 Qe7 7. Qb3
g6 8. Rf1 h5 9. Be2 Bh6 10. Rxf6 Qxf6 11. Rf1 Qg5 12. Qxf7+ Kh8 13. Qxb7
Rf8 14. Bf3 Rab8 15. Qa7 Qf6 16. Qd7 Be3 17. Bc7 Rb7 18. c6 Rb2 19. Qd5 Bf4
20. Bb6 Rc8 21. c7 Rxb6 22. Qd7 Rxc7 23. Qxc7 Rc6 24. Qb7 Qd6 25. Rd1 Qc7
26. a6 Rc1 27. Qxc7 Rxc7 28. h4 Be3 29. Be2 Bd4 30. Rf1 Kh7 31. Kh2 Rc2 32.
Bb5 *
[/pgn]
See what I mean, Rd5 waits for the N of black to capture it, but Rf1!! of NNUE (found in all alternative lines above) will go and grab the blacks Nf6 itself!!
Check all of the variations above if you don't believe me. In short, NNUEs play is stronger in my opinion.