Nº 2 Marco Campioli

Publicado el 16/01/2019 a 242 × 242 en 8th International Internet Tournament UAPA

Win

Section A.1.

Marco Campioli (Italy)

wKc2,Nd4,Ba1,c6,Pc4,h7/bKg2,Qa5,Rb4

1.Bc6+!
1.h8Q? Rxc4+ 2.Kd3 Rxa4=

1…Kg3!
1…Kf1 /Kf2/Kg1 2.h8Q Rxc4+ 3.Kd3+-

2.h8Q
2.Ne2+? Kf2 3.h8Q Qa2+=

2…Rxc4+ 3.Kd3!
3.Kb3? Rxc6 4.Nxc6 Qd5+ 5.Kb4 Qxc6=

3…Rxd4+!
3…Rxc6 4.Qg7+ Kf4 (4…Kh4 5.Nxc6+-; 4…Kf2 5.Qf7+ Ke1 6.Qe7+-) 5.Qf7+ Kg4 (5…Kg5 6.Nf3+-) 6.Qf3+ Kg5 (6…Kh4 7.Qxc6+-) 7.Qg2+ Kh5 8.Qh1+ Kg4/Kg6 (8…Kg5 9.Nxc6+-) 9.Qxc6+-

4.Qxd4!
4.Bxd4? Qa6+ 5.Ke3 Qxc6 6.Qg7+ Kh3=

4…Qa6+ 5.Ke3
5.Kd2? Qxc6 6.Qe5+ Kg4/Kh4= or 5.Qc4? Qxa1 6.Qg8+ Kf4 7.Qf7+ Kg5!=

5…Qxc6 6.Qf4+
6.Qe5+? Kg4 7.Qf4+ Kh5! 8.Qf5+ Kh6!= or 6.Qg7+? Kh3!=

6…Kh3
6…Kg2 7.Qg4++- see 8.Qg4+ in the main line

7.Qf5+!
7.Qf1+? Qg2 8.Qf5+ Qg4 9.Qh7+ Qh4 10.Qf5+ Qg4=

7…Kg2
7…Kh4 8.Bf6+! Kg3 9.Qf4+ Kg2 (9…Kh3 10.Qh4+ Kg2 11.Qg4+-) 10.Qg4+-

8.Qg4+!
wastes time: 8.Qg5+? Kh1 (8…Kf1 9.Qf5+ Kg2 10.Qg4+- see 8.Qg4+ in the main line) 9.Qh5+ Kg2 10.Qg4++- see 8.Qg4+ in the main line; wastes time: 8.Qf2+? Kh3 9.Qf5++- , see 7.Qf5+ in the main line]

8…Kf1!
8…Kh1 9.Qh3+ Kg1 10.Bd4 Qg2 11.Kd3 Kf1 12.Qf5 Ke1 13.Qa5+ Kf1 14.Qa1#mate
8…Kh2 9.Be5+-

9.Qe2+!
[wastes time: 9.Qf5+? Kg2 10.Qg4++- see 8.Qg4+ in the main line; wastes time: 9.Qf4+? Kg2 10.Qg4+ see 8.Qg4+ in the main line (10.Qg5+ Kh3 11.Qh5+ Kg2 12.Qg4++- see 8.Qg4+ in the main line; 10.Qf2+ Kh3 11.Qf5++- see 7.Qf5+ in the main line) ; wastes time: 9.Qd1+? Kg2 10.Qg4+- see 8.Qg4+ in the main line]

9…Kg1 10.Qf2+
[wastes time: 10.Qd1+? Kg2 11.Qg4+ see 8.Qg4+ in the main line; wastes time: 10.Qe1+? Kg2 11.Qf2+ Kh3 12.Qf5++- see 7.Qf5+ in the main line]

10…Kh1 11.Qf1+!
[wastes time: 11.Qh4+? Kg2 12.Qg4+ see 8.Qg4+ in the main line; wastes time: 11.Qe1+? Kg2 12.Qf2+ Kh3 13.Qf5++- see 7.Qf5+ in the main line]

11…Kh2 12.Be5# mate (mirror checkmate and also model mate)

Medium sized study. Various tries. Checkmate [mirror checkmate (all the empty squares around the mated King are empty) and also model checkmate (all the pieces of the mating side take part and each square of the mated King’s field is guarded only once (pure economical checkmate)]. Play covers all the chess-board. All the pieces move.