Rauf Aliovsadzade (USA)  
#3 4+3

1.Sd4? Kb6! (a),
1.Se3? Sc8! (b).
1.Se7! 
1...Kb6 (a) 2.Sd5+ (thr.) Ka6 3.Ra1#,
1...Sc8 (b) 2.Rxc8 Kb6 3.Rc6#.
Refutations become defenses.