Report Cross the 3 Couples in New Logic/Math Puzzles Posted August 24, 2007 That will work bonanova, except that at some points a wife is in presence of a man that isn't her husband. Your solution avoids that situation. I think you solved a more difficult problem than was proposed. I opted for my approach because  It takes one fewer crossing  I believe the conditions provide for a momentary situation where a woman is without her husband but with another man, so long as she does not remain that way when the boat leaves them. Maybe the author can resolve whether my interpretation is permitted.