Steven B. Dowd (USA)  
#6 8+7

1. Rxa7! ( 1. Sh3 and 1. Se2 are both refuted by 1. ... Rh4! The try 1. Sf3? to threaten 2. Sg5 is uniquely refuted by 1. .. Rh1!)

1. ... Rxa7 2. Sh3! (Here 2. Se2 with the same threat is refuted by 2. ... Rf7!) 2.  ... Rf7 3. Sg5 (now that e6 is covered White threatens 4. Rd8+) 3. ... Rd7 4. Se6 (White renews the threat of Sf4#) 4. ... Rf7 5. Re7! (Second rook sacrifice threatens 6. Sc7#)5. ... Rxe7 6. Sf4#.

The key is not perfect (capturing a pawn to sacrifice the rook) but it does set up the theme of a double rook sacrifice and a continual diversion of the black rook).
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