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 <stouten@embl.bitnet>
   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