1.Qc3+
Kd1
2.Kb6
another step closer!
2...Ke2
3.Qc2
Ke1
4.Qe4+
Kf1
5.Qd3+
Ke1
6.Qe3+
Kd1
7.Kc5
another step closer!
7...Kc2
8.Qe2
Kc1
9.Qc4+
Kb1
10.Qb3+
Kc1
11.Qc3+
Kd1
12.Kd4
another step closer!
12...Ke2
13.Qe3+
Kd1
14.Kc3
Kc1
15.Qxd2+
Kb1
16.Qb2#
checkmate 1-0