Another recurring opening in the World Championship will probably be the C42 Petroff's. This is Anand's most often played opening as White (365chess.com lists 47 of his games) and is his third most often played defense as Black (34 games). Kramnik plays the C42 (47 games) as his second most played defense as Black. Here are five puzzles from Petroff miniatures. None of these games lasted 20 moves. In the first puzzle, White Mates in 4.
More puzzles from the C42 are found at wtharvey.com/c42.html