The Four Move Checkmate - Academic Chess

The Four Move Checkmate
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Scholar’s “ Quick Scramble” Mate
The squares f2 for white, and f7 for black are the wimpiest
squares on the chessboard. The pawns that sit on these
squares are only protected once by the King. In
comparison, the other two pawns which surround the King
are protected four times each! Therefore, f2 and f7 make
excellent invasion targets to get to the uncastled King. In
the game above, white plays e4 to release his bishop and
queen. Bobby Fischer called e4 the best first move in
Chess. After aiming first the queen at the wimpy square,
and then backing her up with the bishop, White is able to
do the Quick Checkmate on black.

The Four Move exerciser
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#1 White mates in 1 move #2 Black defends f7. #3 White mates in 1 move.
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#4. White mates in 1 move #5. White defends f2. #6 White threatens on f7.
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7. White takes the ½ or the » #8 White finds the key to winning f7. #9 Black finds the key to winning f2.