Jan Hein Donner, on whom Mulisch based the character of Onno:

"The game of chess has never been held in great esteem by the North Americans. Their culture is steeped in deeply anti-intellectual tendencies. They pride themselves in having created the game of poker. It is their national game, springing from a tradition of westward expansion, of gun-slinging skirt chasers who slept with cows and horses. They distrust chess as a game of Central European immigrants with a homesick longing for clandestine conspiracies in quiet coffee houses. Their deepest conviction is that bluff and escalation will achieve more than scheming and patience (witness their foreign policy)."

(if someone can find me the source for this quote i shall be most grateful.)