Fun variant to improve endgame skills

I've always LOVED the endgame in chess - so I created a new variant that is just the endgame !

The only goal is to prevent any enemy pawn from reaching the back rank - no kings, no checkmates.

Here's two sample puzzles, can you figure them out?

Remember, the goal is to prevent any enemy pawn from reaching the back rank. (Think of it like, instead of the pawn queening, the game immediately ends and you lose - you can't capture the pawn after it gets to the back rank).

White to move

White to move (Note: if there is a stalemate, the side that cannot make a move loses.)

If you find these fun, please check out the full game here - 66 total levels ! It starts off easy, but there are the expert levels where I made a tough AI that may kick your butt!

Back Rank Chess

Fun idea.  Thanks. BTW your link at, ". . . check out the full game here - 66 . . . " does not find the page.  Gets a 404 page error.

Thanks for the feedback!

I really like the second puzzle.  I was confused until I remembered that a stalemate is a loss for the stalemated side