116-Problem Solution

Solution: 1. Kb2-c2! waiting
 1. ... e4-e3 2. d2xe3+
    2. ... Rd3-c3+ 3. Be1xc3#
    2. ... Rd3 ad lib 3. Be1xd2#
 1. ... Rd3xb3 2. d2-d3+
    2. ... Rb3-c3+ 3. Be1xc3#
Crosschecks are the theme here.