Serieshelpmate in 6
(2 solutions)

1.Bf4 2.Bg5 3.Rg4 4.Kf3 5.Ke2 6.Bd2+ Qxg4
1.Rf4 2.Rf6 3.Be5 4.Kd5 5.Kc5 6.Rc6+ Qxe5

In each solution Black blocks a line to prevent a check by one of his own pieces, which then blocks a queen line to help the king to the mating square. A selfblock completes the preparations. The reciprocal play and overall economy are impressive. The d8 knight is the only cookstopper, preventing a mate with the king on e6 and the queen on f7.

Satanick Mukhuty: I haven’t encountered many serieshelpmates that end with a check on Black’s final move. This one took me quite a while to solve!