Yep.... Seen it before study by someone...can't remember who.

Saavedra position (1895)

Maybe, i saw it in a magazine but it was without any names on it.

why did he resign

The Rook is under attack while there is the threat of mate in Rc1.

there is a nice YouTube video about this study. http://www.youtube.com/watch?v=uYfmJCjJN1E&feature=rec-HM-r2

So, white doesn't promote to queen just because it's unnecessary? Or is there another reason?

5.c8Q Rc4+ 6.Qxc4 is stalemate

BTW

Yes, this is the Saavedra position. It is named after the guy that came up with 5.c8R. One of the most famous positions of all time.

Oh, cool. I've never seen the issue of stalemate because of promotion to a queen come up before. I wondered if that would ever happen.

nice one

oh yes! him! Saavedra!

I've seen it in fundamental endings, a classic