Thematic try: 1.Rh1+? c1Q 2.Rxc1+ Kxc1 3.dc g5! zz,wtm 4.Rg1+ (4.Kc3 Kd1!=) 4...Kb2 5.Rg2+ Kb3! (5...Kc1? 6.Rg4! +-) 6.Kd4 Kb4! 7.Rb2+ Ka3! 8.Rg2 Kb4 9.Rb2+ Ka3 - positional draw or 8.Rc2 g4! 9.c6 g3 10.c7 g2! 11.Rxg2 Rxc7=.

1.Rg1+!! c1Q 2.Rxc1+ Kxc1 3.dc g5 4.Rg4! zz,btm  with:

A) 4...Rg6 5.Rg1+! (5.Rc4+? Kd1! 6.c6 Rg8! 7.c7 Rc8! 8.Ke3 g4 9.Kf4 Kc2(Kd2)=) 5...Kb2 6.Kc4! (6.Rg4? Kc1 7.Rg1+ Kb2 -loss of time) 6...Kc2 7.Rg2+! win.  (7...Kd1 8.Kb5(Kd5) Ke1 9.c6 Kf1 10.c7 Rg8 11.Rg4 Kf2 12.Kc6 Kf3 13.Rxg4 +-).

B) 4...Kb2 5.c6! (5.Kc4? Kc2! 6.Rg2+ Kd1=) 5...Rc7 (5...Kb3 6.Rc4 Rg8 7.Kd4 g4 8.Rc3+ Kb2 9.Rg3 +- ) 6.Rc4! (6.Rb4+? Kc1! 7.Rc4+ Kd1! 8.Kd4 Ke2 9.Kd5 Kf3=) 7.Ke4(Kd4) (7.Rxg4? Rxc6=) 7...g3 8.Kd5! (8.Kf3? Kb3=) 8...Kb3 9.Rg4, win.