[xipho]

A 1200 playing full games in their head sends up some warning flags to me?! I'm over 1500 on Lichess (yes, ELO calculation is not the same, but likely within 300 points at that level?!) and can't even dream of doing that. Did your friend cheat? ;)

[OJFord]

I don't see how he could (or why he would) have, in the same room, eyes often closed, yelling at people to shut up so he could concentrate; occasionally checking the board state with me (always bang on) - but as I replied to sibling, it's not necessary to have a great memory like that is it? Of course, picturing/tracking the current state of the board has a lot of overlap with thinking x moves ahead though I suppose.

[teolandon]

I'm 1500 Lichess but 900 on Chess.com, so no, not within 300 points at that level.

[xipho]

1500 blitz?