Ai Ibisha ; Gote Ginkanmuri strategy .

Shogi Game record : The 3rd Mynavi Joshi open ; pre-round

A shogi game of the Mynavi Joshi open pre-round between ISHIBASHI and SADAMASU started 4:14 P.M. , 25 July 2009 .

You can see the original game record on the Net .
http://mynavi-open.jp/090725/090725_1-2.html
(Flash version , written in Japanese laguage)


Sente : ISHIBASHI Sachio (Jo-ryu 4 dan)
Gote : SADAMASU Minami (Jo-ryu Oi)

(diagram 1)

1.P-2f P-3d
2.P-2e B-3c
3.P-7f P-4d
4.S-4h S-2b
5.P-5f G-3b
6.S-7h G-5b
7.B-7i G5b-4c
8.S-7g K-4a
9.G-7h S-6b
10.P-2d Px2d
11.Bx2d Bx2d
12.Rx2d S-2c
13.R-2h P*2d
14.B*6h B*4b
15.P-3f P-5d
16.K-6i S-5c
17.S-3g S-6d
18.S-2f G4c-3c
19.P-3e
(diagram 1)

Against SADAMASU's 1...P-3d , ISHIBASHI quickly advanced her 2nd file Pawn with 2.P-2e forcing SADAMASU to move up her Bishop with 2...B-3c .

Replying ISHIBASHI's 3.P-7f , SADAMASU closed her Bishop line with 3...P-4d and started making Kakoi . ISHIBASHI exchanged the 2nd file Pawns and Bishops , SADAMASU moved her 2b-Silver with 12...S-2c making Ginkanmuri form and attacking the 2d-Rook . ISHIBASHI backed her Rook with 13.R-2h and just after SADAMASU's Pawn drop on 2d , ISHIBASHI dropped a Bishop with 14.B*6h forcing SDAMASU to drop her Bishop .

Without King's entering castle , ISHIBASHI advanced her right Silver with 18.S-2f and started attacking with 19.P-3e .

(diagram 2)

19...Px3e
20.Sx3e P*3d
21.S-4f R-5b
22.N-3g G3c-4c
23.K-7i P-7d
24.S-6f P-1d
25.P-1f K-3a
26.P-9f P-9d
27.G-5i P-7e
28.Px7e Sx7e
29.P*2e Sx6f
30.Px6f Px2e
31.P-1e R-7b
32.P*7g Px1e
33.P-5e Px5e
34.Sx5e S*3f
35.Nx2e P*2g
36.P*3c Nx3c
37.N-1c+ Lx1c
38.Bx1c+ G-2b
39.+Bx2b Kx2b
40.R-1h N-4e
41.G5i-6h P*5f
42.L*2f N*2e
43.P*5h B*3g
44.Rx1e P*1d
45.Rx2e Sx2e
46.Lx2e Bx5e+
47.S*1a K-3b
48.Lx2c+ Kx2c
49.P*2e K-3b
50.S*6a R-9b
(diagram 2)

After the 3rd file Pawn exchange , ISHIBASHI backed her Silver with 21.S-4f . SADAMASU turned her Rook with 21...R-5b aiming at the 5th file .

After some moves , SADAMASU exchanged the 7th file Pawns with 28...Sx7e crushing the Silver with ISHIBASHI's 6f-Silver .

Sacrificing a Bishop , ISHIBASHI continued attacking in the 2nd & 1st file . SADAMASU tried to counter-attack in the 5th file , but after defended here , ISHIBASHI sacrificed the Rook and attacked SADAMASU's King from the both side .

(diagram 3)

51.S*5b B-3c
52.G*2c K-4b
53.Sx4c+ Kx4c
54.Gx3c Kx3c
55.B*5b G*5c
56.B-4a+ R*3i
57.K-8h +Bx6f
58.G*7f +B-5e
59.N*6e G-4c
60.S-5b= S*3b
61.Sx4c+ Kx4c
62.G*5c K-3c
63.+B-5a K-2c
64.+B-2d K-1b
65.Lx1d K-2a
66.P*3c S-4a
67.P*1c resigns
(diagram 3)

After 133 moves , ISHIBASHI won the game .