6 Puzzles: Sicilian, Richter-Rauzer Attack, 7...a6 (B66)

Here are six puzzles from the Sicilian, Richter-Rauzer Attack.  All puzzles are taken from positions in the first 24 moves of the game.  As a refresher, here's the first 7 moves:  1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6

The first three puzzles are White to move and win (the first is a 'Mate in 10') and the last three are Black to move and win.

More Richter-Rauzer puzzles can be found at http://www.wtharvey.com/b66.html