Longest pondering in a standard-time control game Inspired by the LiChess &quot;French leave&quot; question:
In a standard time-control you can think almost two hours about your move, and even two-and-a half or three if you blitzed beyond the 40 move control. Personally, I recall the one or other opponent of mine thinking a whopping hour about a tempting sacrifice I allowed them to make - bad idea, they regularly lost when I produced even more chaos on the board and they wished they had more time to analyze :P
Thus, my question: What is the longest reported time for a single move under 2h+X/40? (Including Fischer bonus, what argueably makes this even easier. Non-OTB is allowed too, which has the advantage of the data being explicitely recorded.) Tal's &quot;Hippo incident&quot; comes to mind, and Sämisch was an expert for this in almost every game. Still, I lack concrete values.
Tal wrote* about this game:

it was here that Uhlmann established his record, thinking over the move 12...exf5 for 1 hour 50 minutes

Judging from other comments by Tal about this game, I think the time control must have been 2 hours and 30 minutes for the first 40 moves.
[Title &quot;Mihail Tal-Uhlmann, Wolfgang, Alekhine Memorial, Moscow Russia, 11/30/1971&quot;]
[FEN &quot;&quot;]
[startply &quot;23&quot;]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. Bb5 dxe4 6. Nxe4 Bd7 7. Bg5 Qa5+ 8. Nc3 cxd4 9. Nxd4 Bb4 10. O-O Bxc3 11. bxc3 Qxc3 12. Nf5 exf5 13. Re1+ Be6 14. Qd6 a6 15. Bd2 Qxc2 16. Bb4 axb5 17. Qf8+ Kd7 18. Red1+ Kc7 19. Qxa8 1-0

(*) The Life and Games of Mikhail Tal, Everyman Chess (2003), p. 401.