Mario G. García

Ganan

Mario G. García

1.premio- Die Schwalbe 2017/18,

wKf5,Nc5,Rb6/bKe3,Be2,Pa3,c4,h6,h7

1.Ra6!
Try : 1.Ke5? c3! (1…h5? 2.Ra6 h4 3.Rxa3+ Bd3 4.Ra1!+- see solution) 2.Rb3 a2 3.Rxc3+ Kd2 4.Kd4 (4.Ra3 Bc4 5.Kd4 Bf7 6.Nd3 Kc2=) 4…a1N! 5.Ne4+ (5.Rh3 Nc2+=) 5…Kd1 6.Ke3 Nc2+!=

1…Bd3+
main 1…Kd4 2.Ne6+ Kc3 3.Rxa3+ Kb2 4.Ra8! (Try in this line: 4.Ra7? c3 5.Rb7+ Ka3 6.Nd4 Bd3+ 7.Kf4 c2 8.Nb3 Kb2 9.Ke3 Ba6!=; or 4.Re3? Bd3+=) 4…c3 5.Rb8+ Ka3 6.Nd4 Bd1 (6…Bd3+ 7.Kf4 c2 8.Nb3 Kb2 9.Ke3! Bc4 10.Nd2+ Ka1 (10…Kc3 11.Ne4# acordiing Perkonoja; 10…Ka2 11.Ra8+ Kb2 12.Nxc4+ Kc3 13.Ra1+-) 11.Ra8+ Ba2 12.Kd3 c1Q 13.Nb3+ Kb2 14.Nxc1 Kxc1 15.Rxa2+-) 7.Kf4 c2 8.Nb3 Kb2 9.Nc5+ Kc3 10.Ne4+ Kc4 11.Rc8+ Kd3 12.Ke5! h5 13.Rc3++-

2.Ke5!
2.Kg4? c3 3.Rxa3 h5+ 4.Kg3 h4+ 5.Kxh4 Kd2 6.Ra8 (6.Kg3 Bg6 7.Nb3+ Kc2 8.Nd4+ Kd3 9.Nb5 Kc4÷) 6…c2 7.Rd8 c1N=

2…h5 3.Rxa3 h4 4.Ra1!
4.Ne6? h3÷

4…Kf3 5.Ne6 h3 6.Ng5+ Kg2
6…Kg3 7.Rg1+ Kf2 (7…Kh2 8.Nf3#) 8.Nxh3++-

7.Kf4 c3 8.Nf3 Kf2 9.Rh1!
Try : 9.Ne5? Be2! 10.Ra2 h2 11.Ng4+ Ke1 12.Nxh2 Kd1 13.Ke3 c2!=

9…Bf1 10.Nh2 Bd3
10…Bg2 11.Rc1!+-

11.Ng4+ Kg2 12.Rh2+
12.Rc1? h2=

12…Kg1 13.Ra2!
13.Rxh3? c2 14.Rg3+ Kf1 15.Ne3+ Ke1 16.Rg1+ Kd2=

13…Bb1 [or 13…c2 14.Ra1+ Kg2 15.Ne3+ Kf2 16.Nxc2 Bxc2 17.Ra2 (1) 17…h2 18.Rxc2++- see solution(a) Pin in «eco»-> compare (1) with (2)

14.Re2 With :

a) 14…Bd3 [b) 14…c2 15.Re1+ Kg2 16.Ne3+ Kf2 17.Rc1 Ke2 (or by another route, is similar to the line thematic 17…h2 18.Nxc2 Bxc2 (18…Ba2 19.Ne3+-) 19.Rxc2++-) 18.Nxc2 Bxc2 19.Rxc2++-

15.Re1+ Kg2
15…Bf1 16.Kg3+-

16.Ne3+ Kf2 17.Rh1! c2 18.Nxc2 Bxc2 19.Rh2+ (2) 19…Kg1 20.Rxc2 h2 21.Kg3!+-