N

Nash equilibrium, 15

Nash, John, 15

Nicholas, Jeff, 10, 11

No Change for the Holidays mind game, 71–72

solution to, 117

NP-complete problem, 117, 122

NP-hard problem, 122

Number Clues mind game, 54–55

solution to, 103–104

Number Encoding puzzle, 147–148

solution to, 149