In this position:
[FEN "r6k/8/p1Npn1pr/3Pp1b1/2B1q3/PRR5/KP1Q3P/8 w - - 13 38"]
38. Qc2
Black initially replied with 38 ... Qxc2, but I was playing around with the game, looking at what seemed to be the closest point to the two of them being equal. I tried the alternate move of 38. Nc5
... and voilà, the game stabilized with just a TON of good options at nearly every step for both players. It honestly feels a bit like the initial opening, where I could imagine just as much theory based on that starting point as from the opening itself.
Sequences that interested me for their completely different characters:
- 38. Qc2 Nc5 39. Bd3 Qf4 -- White attacks the queen while opening up a discovered attack on the knight, so black dodges the queen to the side (as opposed to taking the pawn on d5, which is also a viable path forward).
- 38. Qc2 Nc5 39. Rb6 Qf5 -- White moves the rook out of danger and black's queen moves to where the pawn can take if white initiates the queen exchange. This frees up the knight to go on the attack. Another wide-open position reached where I could see there being arguments for days over what to do next (screenshot of the options: https://i.imgur.com/h1iufug.png)
- 38. Qc2 Nc5 39. Rb4 a5 40. Rb6 -- It just keeps giving! (screenshot of options from here https://i.imgur.com/puK5YDn.png)
- 38. Qc2 Nc5 39. Rb8+ Rxb8 40. Nxb8 -- White can give a check and force the exchange of rooks, which gives a small advantage to black, but evaluating down to depth 30, it's pretty solid at -0.1.
Are positions like this, where the game sort of stabilizes into so many arguably "best" options, rare?
Here's a screenshot of the evaluation at depth 37, from 38. ... Nc5 https://i.imgur.com/ckBnBWV.png where you can see that those first four options settle out at 0.0 and even the fifth option is only -0.1.
And here is the original game from the Magnus Carlsen Chess Tour Finals (2020): on lichess.org and on chessgames.com (couldn't find it on chess.com)