Example 1:
White moved his Knight to square e6 placing black's King in check. Much to black's chagrin, his Queen was on f5 which also was a square the Knight was
attacking when the check was placed. Thus creating a "Fork".
Because a Knight check can't be blocked, black had to move his King to get out of check, at which point the Knight captured black's Queen.
Example 2: White pushed his pawn to square e4 and as a result, attacked the black's Bishop on square d5 and Rook on square f5
simultaneously.