Endgame # R-12 (Reti 1928)

(1) Endgame # R-12 - Reti 1928 [Burba,M] 1.Ke1 Kc3 [ 1...Ke3? 2.Ra3++- ] 2.Rc1 Kd3 [ 2...Kb2? 3.Kd2+- ] 3.Ra1 1/2-1/2