Robert Lincoln (США)
 
#2 4+3

  Solution: 1.Qa6  [2.Qxb7]

 1...R~file     2.Sc7 (unguard)

 1...Rc7+ 2.Sxc7    (check)

 1...Rxa7 2.Sc7 (self-pin)

 1...Rb8+ 2.axb8Q