[John catches the game clumsily, but is very receptive to the idea of distraction. The doctor starts setting up the board, clicking his tongue when his hand shakes momentarily with the last traces of shock, clenching it on and off until it's steady again. John clears his throat.]

Feel free. Though I doubt it'll be anything besides Baker St... I'll be Colonel Mustard.

[He quirks a grin in Sherlock's direction.]

No changing the rules this time, alright?