Shogi Game 11 (professional, annotation by professional).
The finals of the Meijin tournament are a best-of-7 match between the
current Meijin and the winner of Juni-sen class A. Below is presented
the 4-th game of 45-th Meijin title match played 19 and 20 May 1987.
Nakahara Makoto had lost the first two games of this match to Yonenaga
Kunio, but won the following four and thus became Meijin for the 12-th
time. Annotations again from our regular source Murooka Katsuhiko,
professional 5-dan.
Pieter Stouten
14-th June 1990. Corrected 2-nd July 1990.
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Black: Nakahara Makoto (Meijin); White: Yonenaga Kunio (9-dan pro)
1.P7f P8d 2.S6h P3d 3.S7g S6b 4.S4h P5d
5.P5f S4b 6.G7h G6a-5b 7.K6i G3b 8.G5h K4a
9.P6f P7d 10.P3f P5e 11.S5g S6b-5c 12.P2f S5d
13.P4f Px5f 14.Sx5f P6d 15.P2e G6c 16.G7h-6g N7c
17.K7h S5c 18.P2d Px2d 19.Rx2d P'2c 20.R2e S4d
21.P9f P8e 22.P9e P1d 23.P1f S4d-5e 24.Sx5e Sx5e
25.P'5f Sx4f 26.P7e P'5g 27.G5h-6h Px7e 28.P'7d Gx7d
29.S'6c G8d 30.P1e N3c 31.R2g N4e 32.Px1d P8f
33.Px8f P'8g 34.B9g P5h+ 35.Gx5h S'5g 36.G5hx5g Nx5g+
37.Gx5g Sx5g+ 38.Rx5g P7f 39.S'5b K3a 40.Sx7f Bx6f
41.Rx8g P'7g 42.Nx7g N6e 43.Nx6e P'7g 44.Rx7g Bx7g+
45.Kx7g R'4g 46.P'6g P'7e 47.B'5c K2a(A) 48.N'1c(B) K2b
49.B8h(C) G'8i(D) 50.K7h(E) Gx8h 51.Kx8h B'4d(F) 52.Bx4d+ Rx4d+
53.B'6f B'3c 54.N2a+ Kx2a 55.P1c+ +R4h 56.K9g Rx5b
57.P'2b Gx2b 58.+Px2b(G) Kx2b 59.Bx3c+ Kx3c 60.B'6f B'4d
61.N'2e K2d 62.S'3c Bx3c(H) 63.G'1e Lx1e 64.Bx3c+ Kx2e
65.B'1d Kx1d 66.+Bx1e K1c 67.+B3c Resigns
(A) Yonenaga gave an excellent performance until the 46-th move.
47. ... K2a is dangerous. Yonenaga could have won easily by playing
47. ... G'4b.
(B) It looks like black has no mating attack yet; Yonenaga also thought
that. Usually this is a lost position for black, but Nakahara found
a good combination.
(C) Yonenaga overlooked this move. White cannot play 49. ... Px7f
50.Kx7f. From now on Yonenaga had 6 minutes left; Nakahara 28
minutes.
(D) The only possible answer. It might have been winning. Before this
move almost everybody thought that Nakahara would win.
(E) 50.S4a= is an interesting move. If white plays 50. ... G3c (aiming
at 51. ... Px7f), then 51.K8g Gx8h 52.Kx8h R4h+ 53.N'7h wins. But
50.S4a= is losing, because it will meet 50. ... G3a.
(F) 51. ... R4h+ 52.G'7h (after 52.N'7h black has no mate anymore,
because he needs a Knight in hand) 52. ... G'7g 53.Kx7g Px7f
54.K8g P7g+ 55.Kx7g B'5i 56.K6f (56.K8g Bx8f+ 57.Kx8f G8e
followed by mate. If black had played 52.N'7h then white could not
mate black's King with 57. ... N'8f) 56. ... G7e! 57.Kx7e Bx8f+
58.K6f Px6e 59.Kx6e +R4e wins because of the threat 60. ... +Bx5c.
From now on Yonenaga had only 1 minute left.
(G) 58.+Px2b ?? After 58.Bx3c+ black wins, because white has no "tsume"
(forced mate after perpetual checks) nor any defense. From now on
Nakahara had only 3 minutes left.
(H) White lost his last winning chance: 62. ... Kx2e 63.Sx4d+ S'8h
64.K9f (black cannot play 64.Bx8h, because of 64. ... Px7f and he
has no immediate mate. Black's Bishop must be on square 6f for a
mate) 64. ... Gx9e! 65.Kx9e G'9d 66.K9f N'8d 67.K8g S7g+! and
black has no choice and must take with the Bishop.
Murooka Katsuhiko