To Vigo or not to Vigo? That is the question.

I already wrote about skill fluctuations; check my stats on the portal; the fluctuations are an order of magnitude greater there. When I play for fun with a drink, that's one thing. When I play in a tournament (especially a team one), it's a different story – maximum focus, not a drop of alcohol, etc.

You, as a chess player, tell me: is your skill the same during a practice game or an official competition? Is your concentration the same? It's the same here.