Helpmate in 5 moves

Couldn't it be (one example):
1. Bxc2 Rxc2+
2. Ka1 b2+
3. Kxa2 b1=Q
4. Ka3 ~
5. Ka4 Ra2#

Or is the mate for white instead?

Originally posted by mjolnir
Couldn't it be (one example):
1. Bxc2 Rxc2+
2. Ka1 b2+
3. Kxa2 b1=Q
4. Ka3 ~
5. Ka4 Ra2#

Or is the mate for white instead?

Awesome problem. I won't give away the solution just yet, so that others have a chance to solve it.

Solution PM'ed.

Originally posted by SwissGambit
Awesome problem. I won't give away the solution just yet, so that others have a chance to solve it.

Solution PM'ed.

Originally posted by SwissGambit
In helpmates, Black moves first, and White's last move [in this one, his 5th move] mates Black.

This is a seriously difficult problem... I've been working on it for quite a while and the answer's still not arisen.