Does Bear Grylls play chess? If he does, I’m sure he would favour the King’s Gambit. As chess openings go, it is primitive and hazardous. Playing it well demands a kind of reckless, wholehearted optimism that few can muster. Ostensibly, you sacrifice just a pawn (1 e4 e5 2 f4), but really, you’re already in deeper, since the aspiring gambiteer mustn’t flinch from chucking a piece or more on the bonfire.