I think the problem here isn't so much that the hint is repeated as that it's needlessly vague. You may have already solved the problem but in case you didn't

I think the problem here isn't so much that the hint is repeated as that it's needlessly vague. You may have already solved the problem but in case you didn't I'd like to give you what I think would be a good hint because windmills in chess are actually really cool. A windmill in chess is a tactical scenario where a the king is repeatedly revealed to checks by the same piece. A "revealed" check occurs when a piece moves out of the way allowing another piece behind it to attack the opposing king. This scenario allow you to move the piece freely while your opponent can only move his king. Here's a great example of a game with a windmill (and actually one of the great games of all time) The first check of the windmill occurs on move 19. http://www.chessgames.com/perl/chessgame?gid=1008361 http://www.chessgames.com/perl/chessgame?gid=1008361