Ive changed the puzzle a bit after what u have told me

Nice one.  What would you do if 2... Rxc7?

What if 2... Rxc7?

 ...........2 Rxc7    

3Qxc7+     Nxc7     

4Rxhg6               White still takes the lead      

after 4...Bxh6, isn't it even? (and the Nb5 is attacked).

After that 4... Nxb5 is troublesome though....

I think 2... Rxc7 refutes this.

I see you've updated the puzzle to deal with 4...Bxh6, but after 4...Nxb5 Black is still ahead in the exchange.

nice:)

Grobe, if you're saying Rxc7 refutes the puzzle, I disagree... Now in the edited puzzle (with the black bishop on e7) the continuation 4...Nxb5 5.Rxh7 and white has a won game IMO.

White may have a winning position after the exchange, but that's because he had a winning position before the exchange.  Bottom line is that he goes from being a minor peice up to roughly even in material -- after your continuation the net result is that White has effectively exchanged a bishop and a knight for a rook and to me that means White has lost the exchange.

I guess it's moot since the puzzles been changed again.  The exchange is now a bishop for a rook and White ends up marginally ahead in the exchange and with a decisive edge.

Well Grobe, lol, you make a good point!  I hadn't noticed that White started with an extra piece, and I didn't notice that the extra piece turned into 'up the exchange' along the way ... I've had a really blind day at the chess board today!  Buuut... You know actually the puzzle does work perhaps as a "simplification study" ... the final position in my continuation is IMO pretty clearly won I think. I don't see where black gets any counter play...

Of course, the way I'm analyzing today... you'll probably point out a forced mate in 3 three that I've missed.

Hah, If you're as chess blind as I've been lately then maybe neither of us should be trying to analyze this thing.