Black to play and win

Originally posted by schakuhr
[fen]8/pR4pk/1b2p3/2p3p1/N1p5/7P/PP1r2P1/6K1 b - - 5 31[/fen]

here you go. good luck 😉

1...Rxb2 2.Nxb2 c3 3.Nd3 c4+ 4.Rxb6 cxd3 seems to do the trick. I'll leave it to others to find any desperation resources for white.

Originally posted by BigDoggProblem
1...Rxb2 2.Nxb2 c3 3.Nd3 c4+ 4.Rxb6 cxd3 seems to do the trick. I'll leave it to others to find any desperation resources for white.

and what happens after 3. Rxb6 ?

Originally posted by schakuhr
and what happens after 3. Rxb6 ?

Black moves a piece.

Originally posted by THUDandBLUNDER
Black moves a piece.

yes, c4 wins, despite white being down 2 'pieces' 😀

Originally posted by Mephisto2
yes, c4 wins, despite white being down 2 'pieces' 😀

yes correct, I got this one from a book 🙂. I'll quote exactly what it says about this:

31. ... Rxb2!!
And a big surprise.
32. Nxb2 c3
Gives white a problem he cannot solve.
33. Rxb6
this seems to be sufficient, because after 33. ...axb6 34. Nd3 black is lost.
33. ...c4!!
the whole point! with knight and rook white is hopeless against the black double pawn. Before everything there is the threat 34. ...c2 and on 34. Tc6 there will follow ofcourse 34. ...cxb2.
34. Rb4
Again, this seems to be sufficient for white: 34. ...c2 35. Rxc4 or 34. cxb2 Rxb2 are good for white.
34. ... a5!!
And again white gets disappointed in his expectations. The white rook has no field left, because after 35. Rxc4 cxb2 or 35.Nxc4 c2 the promotion is inevitable.
35. Na4
instead of resigning.
35. ...axb4
white resigned.

Ortueta-Sanz, Madrid 1933