In this solution, the move that was required is given in bold type. All
else is given for the sake of completeness and for the interest of solvers.
Threats are given in parentheses. The symbol 'S' stands for knight.
John Rice
Mate in 2
1.e7! (2.Qc3#)
1...Bd2 2.d6#
1...Sxe2 2.Qxe2#
1...Bxe5 2.d6#
1...Rxg8 2.Se3#
1...cxb4 2.Qd4#
1...Se4 2.Qxe4#
There are the following ‘tries’, given by solvers, defeated as noted:
Claim 
Refutation(s) 
1.d6? (2.Qxc5#) 
1...Sxe2! 
1.Sxe3+? 
1...Bxe3! 
1.Rxg4? (2.Se3#) 
1...Sxf5!, 1...Sxe2! 
1.Qc3+? 
1...Kxd5! 
