I chatted to a spectator after one of my games at the Sparkassen Chess Trophy in Dortmund.

‘A close shave today, wasn’t it?’ he began.

‘Yes, I can’t believe my opponent escaped with a draw.’

‘No, I think you were losing.’

‘Oh, but didn’t you see my beautiful mating idea with b5?’

‘There’s a fly in the ointment – have another look,’ he said.