Selfmates/Helpmates Puzzles

In a selfmate, White compels Black to deliver mate, while Black doesn't cooperate and tries to avoid giving mate for as long as possible.

In a helpmate, Black and White cooperate to enable White to give mate.

Black to play and mate yourself in 6.(Helpmate)

cool!

Black to play and mate yourself in 9. (Helpmate)

Selfmates and helpmates are actually very different.

In a selfmate, White compels Black to deliver mate, while Black doesn't cooperate and tries to avoid giving mate for as long as possible. https://en.wikipedia.org/wiki/Selfmate

In a helpmate, Black and White cooperate to enable White to give mate. https://en.wikipedia.org/wiki/Helpmate

In the first one there is a helpmate in only three (and the White pawn on h1 should be removed).

In the second one there is a helpmate in only two.

Helpmate and selfmate problems are focused on the minimum number of moves possible.