Nº13 Rainer Staudte & Michael Schlosser

Draw
Section A.
Rainer Staudte & Michael Schlosser (Germany)

wKa8,Qe8,Nc8/bKc1,Qd2,Rc2

1.Qg8! defends d5, g2, and a2
1.Nb6? Qg2+! 2.Ka7 (2.Kb8 Qg3+! 3.Ka7 or Kb7 3…Rc7+!) 2…Rc7+! 3.Ka6 Qf1+ 4.Ka5 (4.Qb5 Ra7+!) 4…Qf5+ 5.Ka6 a) 5.Ka4 Ra7+ 6.Kb4 (6.Kb3 Qb1+) 6…Qb1+ 7.Kc5 Rc7+; b) 5.Kb4 e. g. 5…Qb1+ 6.Ka3 Ra7+ 7.Na4 Qb2# mate with a pinned Knight; 5…Qd3+ 6.Ka5 Rc5+ 7.Ka4 Qc2+ 8.Ka3 Qc3+ 9.Ka4 Ra5#; 1.Qe6? Qa5+! 2.Kb7 or Kb8 2…Qc7+! 3.Ka6 (3.Ka8 Qxc8+) 3…Rc6+

1…Qe3 2.Qd8! Ra2+ 3.Kb7!
3.Kb8? Rb2+!

3…Qe4+ 4.Kc7!
4.Kb6? Rb2+ 5.Kc7 (5.Kc5 Rc2+ 6.Kb5 Qc6+ 7.Ka5 Ra2+ 8.Kb4 Ra4+ 9.Kb3 Qc4#; 5.Ka6 Qb7+ 6.Ka5 Qb5#) 5…Qb7+ 6.Kd6 Rd2+; 4.Kb8? position A 4…Qa8+ 5.Kc7 Rc2+ 6.Kb6 (6.Kd7 Rd2+ 7.Nd6 Rxd6+) 6…Rc6+ 7.Kb5 Qa6+ 8.Kb4 Rc4+ 9.Kb3 Qa4#

4…Qf4+
4…Rc2+ 5.Kb8! Qb4+ 6.Nb6!

5.Kb7!
5.Qd6? Loses because the Black Queen is very active on the 4th rank. 5…Rc2+! 6.Kb7 or Kb6 6…Rb2+! The White King cannot fly to the a-file because the Black Queen can check on a4. 7.Kc7 (7.Kc6 Qe4+ 8.Kd7 Rd2–+; 7.Ka6 Qa4#; 7.Ka7 Qa4+ 8.Qa6 Qd7+! 9.Ka8 Qd5+! 10.Ka7 Ra2–+; 7.Ka8 Qe4+ 8.Ka7 Qb7#) 7…Qf7+ 8.Ne7 a) 8.Qe7 Rc2+ 9.Kd7 (9.Kd6 Rd2+ 10.Kc7 Qc4+; 9.Kd8 Rxc8+) 9…Qf5+–+; b) 8.Kd8 Rd2; c) 8.Kc6 Qb7+ 9.Kc5 Qxc8+; 8…Rc2+ 9.Kb7 or Kb~ (9.Kd7 or Kd8 9…Rd2) 9…Qb3+

5…Qf3+ 6.Kc7!
6.Kb6? Rb2+ 7.Kc7 (7.Kc5 Qc3+ 8.Kd6 Rd2+) 7…Qb7+ 8.Kd6 Rd2+; 6.Kb8? see position A]

6…Qg3+ 7.Qd6! Saves the day because the Black Queen is too passive on the 3rd rank.
7.Kb7? Qg2+! 8.Kc7 Rd2! 9.Qf6 a) 9.Qe7 Rc2+! 10.Kb8 Qg3+ 11.Kb7 Qf3+ position D 12.Kb8 Rb2+ 13.Ka7 Ra2+ 14.Kb6 (14.Kb8 Qa8+ 15.Kc7 Rc2+) 14…Qb3+ 15.Kc7 or Kc6 15…Rc2+ loses the Knight; b) 9.Nd6 Qg7+ 10.Qd7 (10.Kc6 Qe5 11.Qf8 (11.Qd7 Rc2+ 12.Kb7 Qd5+ 13.Kb8 Rc6) 11…Qd5+! 12.Kd7 (12.Kc7 Qc5+ 13.Kd7 Qb5+) 12…Qb5+ 13.Ke6 Re2+) 10…Rc2+ 11.Kd8 Qf8+ 12.Ne8 Rd2 double pin; 9…Rc2+! 10.Kb8 (10.Kd8 Qg8+!) 10…Qg3+! 11.Nd6 Qg8+! 12.Ka7 Ra2+!–+ 13.Kb6 (13.Kb7 Qa8+) 13…Rb2+ 14.Kc7 a) 14.Kc6 Qa8+! 15.Kd7 Qa7+ see position C; b) 14.Kc5 Rc2+! 15.Kb4 (15.Kd4 Rd2+! 16.Kc3 Qg3+–+; 15.Kb6 Qb8+ 16.Nb7 Qc7+ 17.Ka7 Ra2+!–+) 15…Qb8+ 16.Nb5 Rb2+; 14…Qb8+! 15.Kc6 (15.Kd7 Qa7+ see position C) 15…Qb6+ 16.Kd7 (16.Kd5 Rd2+!) 16…Qa7+ position C; 7.Kc6 Rd2 8.Qe7 Rc2+ 9.Kb7 Qf3+ see position D]

7…Rc2+
7…Qg7+ 8.Kb8! (8.Kb6? Rb2+! Black wins) 8…Rb2+ 9.Nb6! positional draw] 8.Kb7! otherwise the Knight is lost [8.Kb6? Qb3+!] 8…Qf3+
8…Rb2+ is harmless now 9.Ka6 The Black Queen cannot check on the a-file. 9…Ra2+ 10.Kb7!

9.Kb8! Rc6 10.Qd8!
10.Qd7? Qb3+! 11.Ka7 a) 11.Ka8 Ra6+ 12.Na7 Rb6! 13.Qc7+ a1) 13.Nc8 Qa2+ 14.Na7 Qg2+; a2) 13.Qc8+ Kb2 14.Nc6 (14.Qh8+ Ka2) 14…Qa2+ 15.Na7 Qd5+; 13…Kb1 14.Nc6 (14.Qh7+ Ka2 15.Qh2+ Ka3! 16.Qc7 Qd5+) 14…Qa2+ 15.Na7 Qd5+; b) 11.Qb7 Qe6 12.Ka7 (12.Na7 or Se7 12…Rb6) 12…Rxc8 13.Qh1+ Kb2 14.Qb7+ Ka3 15.Qf3+ Qb3; 11…Qa4+ 12.Kb8 (12.Kb7 Qb5+ 13.Ka8 Ra6+–+) 12…Qb5+ 13.Qb7 Qc5 14.Qd7 (14.Na7 or Se7 14…Rb6) 14…Qe5+ 15.Kb7 (15.Ka8 Rc7–+) 15…Qb5+! 16.Ka8 Ra6+–+

10…Qf4+
10…Qb3+ 11.Ka8! positional draw, again the Black Queeen is out of power on the 3rd rank

11.Kb7!
11.Ka7? Qa4+ 12.Kb7 (12.Kb8 Qb5+! etc.) 12…Qa6+! 13.Kb8 Qb5+ 14.Ka8 Ra6+! 15.Na7 Qc6+! 16.Kb8 Rb6+!; 11.Ka8? Rc7 and mate

11…Qe4 threatens Queen loss 12.Kb8!
12.Ka7? position B 12…Qa4+! 13.Kb7 Qa6+! 14.Kb8 Qb5+! 15.Ka8 Ra6+! 16.Na7 Qc6+! 17.Kb8 Rb6+!

12…Qb4+ 13.Ka8!
13.Ka7? see position B

13…Ra6+ 14.Na7 Qe4+ 15.Kb8 Qe5+ 16.Ka8!
16.Qc7+? Qxc7+! 17.Kxc7 Rxa7+–+
16.Kb7? Rd6! 17.Qc7+ (17.Qc8+ Kb1 18.Qc7 Qd5+! 19.Kb8 Qb3+! 20.Ka8 Rb6!; 17.Nc6 Qg7+) 17…Kd1! 18.Nc8 a) 18.Qf7 Qb2+ 19.Kc8 Qc3+ 20.Kb7 (20.Qc7 Qh3+ 21.Kb8 Qb3+! 22.Ka8 Rb6 23.Qd7+ (23.Qd8+ Kc2 24.Qc7+ (24.Qc8+ Kb2) 24…Kb1) ) 20…Qb4+ 21.Kc8 Qc5+ 22.Qc7 Qf5+ 23.Kb8 Rd7 24.Qc8 Qf4+ 25.Ka8 Rc7 26.Qa6 Qf8+; b) 18.Kb8 Rb6+ 19.Kc8 Qe6+ 20.Qd7+ (20.Kd8 Rd6+–+) 20…Qxd7+ 21.Kxd7 Rb7+; 18…Qd5+! 19.Kb8 Rc6 20.Qe7 Qc4 21.Qb7 a) 21.Qd7+ Kc1! Position E 22.Qf5 (22.Nd6 Qd5!–+; 22.Qd8 Qb5+ 23.Ka8 Ra6+! 24.Na7 Qc6+! 25.Kb8 Rb6+–+) 22…Rc5! 23.Qd7 (23.Nb6 Qg8+!–+) 23…Rb5+ 24.Ka8 (24.Ka7 Qa4#) 24…Qe4+–+ Black mates; b) 21.Qd8+ Kc2! 22.Qd7 b1) 22.Na7 Qb3+! covers the Black King 23.Ka8 Rb6! threatens check on the long white diagonal and loses the immobile Knight soon 24.Qc7+ (24.Qc8+ Kb2 25.Qh8+ Ka2 26.Qh2+ Ka3! 27.Qc7 Qd5+–+) 24…Kb1 25.Nc6 (25.Qh7+ Ka2 26.Qc7 Qd5+) 25…Qa2+ 26.Na7 Qd5+; b2) 22.Nd6 Qf4!–+ loses the Knight; 22…Kc1 see Position E; c) 21.Na7 Rb6+–+ Black mates; 21…Kc1 22.Nb6 a) 22.Qd7 Qb5+ 23.Qb7 (23.Ka8 Ra6+–+) 23…Qc5 24.Qd7 Qe5+ 25.Kb7 (25.Ka8 Rc7–+) 25…Qb5+! 26.Ka8 Ra6+–+; b) 22.Na7; 22…Qf4+ 23.Ka8 Qf8+ 24.Ka7 (24.Qb8 Qxb8+ 25.Kxb8 Rxb6+) 24…Qc5 25.Qa6 (25.Ka6 Qa3+ 26.Kb5 Rc5#) 25…Qe7+ 26.Ka8 or Kb8 26…Qd8+! 27.Ka7 Rc7+

16…Qc5 17.Qc7! defends a7
17.Qc8? Qxc8#; 17.Qb8? Rf6! defends f4 and threatens Rf8 18.Nc8 (18.Qb3 Rf8+ 19.Kb7 Qe7+ 20.Kc6 Rf6+ (now the Knight is tabu 20…Qxa7? 21.Qc4+ Kd1 22.Qg4+!=) 21.Kb5 Qb7+ 22.Kc4 Rf4+–+) 18…Rf8 19.Kb7 Rf7+ 20.Ka6 Qa3+ 21.Kb6 Qb4+

17…Qxc7 stalemate with a pinned Knight