Four guards protect a castle gate, stationed at posts A, B, C, and D in a straight line. Guard A is not next to Guard C. Guard B is stationed somewhere to the right of Guard A. Guard D is at the far right end (post D). Where is Guard C stationed?
Post B (wait, let's check positions: A, B, C, D)
D is at the far right (post 4). Guard A is not next to C. If D is 4, and B is right of A, the only non-adjacent spots for A and C while leaving room for B are positions 1 (A), 3 (B), 2 (C), 4 (D). Thus C is at post 2.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Hard. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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