I played rather a bad game on Monday. My first instinct, I'm afraid, is to look for excuses: I had a cold, the room was too hot, the ceiling was leaking... it's a bit pathetic, really. As someone once said, "I have never had the satisfaction of beating a completely healthy opponent". (Google mostly seems to think that it was Amos Burn, but these things have a life of their own. Until I see Edward Winter confirming this, I regard it as unproven...) The thing is, it's very nice to tell yourself that when you play badly that it's somehow 'not really you'; influences beyond your control stopped you from playing as well as you could have done. But this goes nowhere: even in the unlikely event that it's true, the conclusion should be that playing chess in anything other than peak health and perfect conditions is a mistake. The chess clubs wouldn't see much activity if we all believed that. On the other hand, I do feel the need to explain my de...