to bishop; this is why this study is well-known while many other elaborations on the Saavedra position are forgotten: 1.Nc1 Rd5+ 2.Kc2 (2.Nd3? Rxd3+ 3.Kc2 Rd5! 4.Kc3 Rxb5 draws; 2.Ke2? Rxb5 3.c7 Re5+ draws) 2...Rc5+ 3.Kd3! (3.Kd2? Rxb5 4.c7 [4.Nb3+ Rxb3 5.c7 Rb2+! – see below] Rb2+! 5.Kd1 Rc2! 6.Kxc2 stalemate) 3...Rxb5 (3...Rxc1 4.Kd4, intending 5.Kd5 and 6.b6, wins) 4.c7 Rb8! and now both 5.cxb8=Q and 5.cxb8=R are stalemate, 5.cxb8=N leaves a drawn ending, and 5.Nb3+ Rxb3+ 6.Kc2 Rb2+! 7.Kc1 (7.Kc3 Kb1! and Black wins) only draws after 7...Rb1+ or 7...Rb4 8.c8=Q (8.c8=R Ra4 is safe now) Rc4+. White can only win by 5.cxb8=B! followed by a bishop and knight checkmate. References Further reading John Roycroft, Test Tube Chess (Faber and Faber, 1972) – positions 112 to 115 tell the story of the position External links Tim Krabbé's page on the position, including the original five Weekly Citizen columns Video explaining the Saavedra Position Chess endgames