179-Mate in 3 SOLUTION.

Solution: 1. Se8! [2. Sxc7, Sf6#]
 1. ... Rc4+ 2. Rxc4 [3. Sxc7, Sf6#]
    2. ... Se6, Sa8 3. Sf6#
    2. ... f5, Sd7 3. Sxc7#