Peter Gyarmati & Mario García

Draw

Peter Gyarmati & Mario García (Hungary –Argentina)

1er Premio Revista Phenix .2020

Theme: Positional draw by the elimination of the threat of two knights against pawns (Troitzky) and by the threat of domination of three minor pieces and pawn, against the Queen

1.b6!
Try :
1.Rg7? Be6! (no 1…Bd5? 2.b6 axb6 3.cxb6÷ see solution in position X1) 2.Rxa7 (2.c4? Nc2+–+; 2.b6? axb6 3.cxb6 Nd5+ 4.Ka5 Nxb6 5.Kxb6 Kxg3–+) 2…Nd5+ 3.Ka5 Nxc5–+
1.Re5? Nd2 2.c6 Nd5+3.Kc5 Kxg3 4.Rxd5 (4.c4 Nb6 5.Re7 Ndxc4 6.Rxa7 Bc2 7.c7 Bf5+-) 4…Ne4+ 5.Kd4 Bxd5 6.Kxd5 Nxc3–+

1…axb6 2.cxb6 Bd5!
main :
2…Nxg5 3.b7 Bd1 4.b8Q! (try : 4.c4? Nc2+! (4…Ne4? 5.b8Q Nxg3 6.c5 Bf3 7.Ka5= see solution position (X2)) 5.Kc3 Ne4+ 6.Kb2 Ne3–+) 4…Ne4 5.c4 Nxg3 6.c5! Bf3 7.Ka5! (X2) (try : 7.Qd6? Ngf5 8.Qd2+ (8.Qh2+ Kf1 9.Qd2 Bc6 10.Qc1+ Kf2–+) 8…Kg3 9.Qc1 Nd4 10.Qxe3 Nc2+–+) 7…Ne2 (7…Ngf5 8.Qh2+ /b2=) 8.Qh2+ Ke1 9.c6! (9.Qh5? Nd4–+) 9…Bxc6 10.Qh6 Nc4+ 11.Kb4= positional draw

3.Rg7 (position X1) 3…Kxg3
3…Nd6 4.Rxg4! (4.c4? Bf3 5.c5 Nb7–+) 4…Nxg4 5.Kc5!= no is possible » Troitzky»
3…Nxg3 4.c4 /b7=

4.c4!
4.b7? Bxb7 5.Rxb7 Nd5+ /d6–+ win by Troitzky 6.Ka5 Nd6 7.Rd7 Nc4+ 8.Kb5 Nde3–+ We have a classic ending where the Pawn will cost the Rook and the K + 2N / K + P position is winning as A. Troitzky has shown in several studies published since the late 19th century.

4…Nc2+ 5.Ka5!
5.Kb3? Nd4+ 6.Kb4 Nc6+ 7.Kb5 Nc3+ 8.Kc5 Bf3 9.b7 Na2 10.Rg8 Nab4 11.b8Q+ Nxb8 12.Kxb4 Nc6–+

5…Bc6 6.b7!
6.Rc7? Nd4 7.b7 (7.Kb4 Kf4 8.Rf7+ Nf5 9.Rc7 g3 10.Rxc6 Nfd6 11.b7 Nxb7 12.Rg6 Nbc5–+ Troitzky) 7…Bxb7 8.Rxb7 Nc5–+ Troitzky

6…Bxb7 7.Rxb7 Nc5 8.Rf7!
8.Rc7? Nd4 9.Rxc5 Nb3–+

8…Nd4 9.Kb4 Nde6 10.Kc3! Kh2 11.Kd2!
11.Rh7+? Kg2 12.Kd2 Kf3 13.Rf7+ Nf4–+

11…g3 12.Rh7+= positional draw e.g. 12…Kg1 13.Rh6 g2 14.Ke3 and Black can no longer progress without mobilizing their N and thus allowing c5 after which it is sufficient to sacrifice the Rook on Pg2 to make a draw (Troitzky)