Dec 7, 2010

Ai Yagura ; Sente Bougin vs Gote R-8a strategy

Shogi Game record : The 19th Ginga sen ; A-block

A shogi game of the Ginga sen A-block between ARIMORI Kouzou and SAWADA Shingo was broadcasted 30 October 2010 .

Sente : ARIMORI Kouzou ( 7 dan)
Gote : SAWADA Shingo (4 dan)

(diagram 1)

1.P-7f P-3d
2.P-6f P-8d
3.S-6h S-6b
4.P-5f P-5d
5.S-4h S-4b
6.G4i-5h G-3b
7.G-6g K-4a
8.P-2f P-7d
9.P-2e S-3c
10.S-7g G-5b
11.B-7i B-3a
12.K-6h P-4d
13.K-7h G5b-4c
14.K-8h P-9d
15.G-7h P-9e
16.P-3f N-7c
17.S-3g R-8a
18.S-2f B-6d
19.B-4f B-5c
20.N-3g S-2b
(diagram 1)

Until 3.S-6h , the opening of this game became Yagura opening and the game seemed to advance along a typical line to Shin Yagura Niju-yonte gumi . ARIMORI advanced the 2nd file with 9.P-2e forcing SAWADA to move up his left Silver with 9...S-3c , and to make Yagura gakoi by Haya gakoi method .

After completed the Yagura gakoi , ARIMORI advanced his right Silver with 18.S-2f making Bougin attacking form . In the other hand , SAWADA made the 8a-Rook form to counter-attack against Bougin strategy .

(diagram 2)

22.Bx2d N-3c
23.B-6h N-4e
24.Nx4e Px4e
25.S-3g P-9f
26.Px9f P*9g
27.Lx9g N-8e
28.S-8f Nx9g+
29.Sx9g N*8e
30.S-8f Lx9f
31.P*2d P*9h
32.P*9g Lx9g+
33.Nx9g P-9i+
34.L*2g Nx9g+
35.Sx9g +P-8i
36.Kx8i Bx9g+
37.P*9h +B-6d
38.N*5e Px5e
39.P-2c+ G3b-4b
40.+P-3b Gx3b
41.Lx2b+ G3b-4b
42.+Lx1a P*9g
43.Px9g N*8e
44.R-2a+ N*3a
45.N*2c K-5b
46.Nx3a+ S*6i
47.+R-2b +Bx9g
48.S*8h R-9a
49.P*9e L*7g
50.Bx7g Nx7g+
51.G6gx7g Rx9e
52.Sx9g Rx9g+
53.L*9i P*9h
54.Lx9h Sx7h+
55.Gx7h resigns
(diagram 2)

After 109 moves , ARIMORI won the game .

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