6 Puzzles: Sveshnikov/Pelikan

Why study the Sveshnikov/Pelikan, ECO B33 ?  It's the #1 opening faced by Kramnik (365chess.com gives 60 games) as Black and the #2 opening chosen by Anand as White (46 games).  The crucial game of the World Championship may be a B33.  Here are six critical positions from Sveshnikov/Pelikan miniatures.  None of these games were longer than 18 moves.  The first puzzle is Black Mates in 4.

More puzzles can be found at wtharvey.com/b33.html.