TKS founder Dr. Brooks thinks that the discovered check, sometimes also called a "discovery" or "discovering," is by far the most incredible chess tactic, in fact being superior to all the other chess tactics combined. That can't be true, right? Wrong. In the earliest days of TKS, Dr. Brooks designated his favorite color, violet, for anyone savvy enough to execute a discovered check. Earn a Violet Belt next class and become Dr. Brooks's favorite student! 

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What exactly is a discovered check, you ask? A discovered check is a move on a chessboard when the moving piece attacks a piece but the piece behind the moving piece suddenly attacks a different piece, resulting in a situation in which two separate pieces are being attacked, and the opponent cannot stop both attacks. Cool, huh?

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Here is a great example of a discovered check. Can you spot the move that wins the game for white?

See it? It is to move the bishop to the red square, which not only checks the king, but also opens up an attack on the defenseless black queen! Check this out:

Once the bishop moves to the red square, the game is over. The bishop move "discovered" the rook attack on the queen, and since the law states that the king has to move out of check, once that happens the white rook gobbles the queen and the rook and king laddermate follows very soon thereafter.

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Here is another example of a discovered check, Can you find the move that wins the game for white?

Yes! It is for the knight to attack the queen, as seen on the yellow square below, while simultaneous the fact that the knight moved checked the king as well! Both threats cannot be neutralized, the king must move, the queen must fall, and the white pawn will inevitably promote! When a discovered check is executed during class, the student should raise their hand, call "Referee!", and then claim that Violet Belt!