Sep 8, 2009

Shogi News : UEDA becomes the challenger . (Jo-ryu Osho)

Shogi News : The 31st Jo-ryu Osho sen : challenger deciding game

0:08 P.M. , after 172 moves , UEDA won the challenger deciding game . And she becomes the challenger of the 31st Jo-ryu Osho sen title match with SHIMIZU .

The title matach is going to start 11 October 2009 , at Kichisuke , Miyakonojoh city , Miyazaki .

You can see the original game record on the Net .
(Flash version , written in Japanese language)
(Java version , written in Japanese language)

Sente : IWANE Shinobu (Jo-ryu 2 dan)
Gote : UEDA Hatsumi (Jo-ryu 2 dan)

(diagram 1)

1.P-7f P-3d
2.P-6f P-8d
3.R-7h P-8e
4.B-7g S-6b
5.K-4h K-4b
6.K-3h K-3b
7.S-6h B-3c
8.K-2h K-2b
9.S-6g L-1b
10.P-7e K-1a
11.S-3h S-2b
12.B-6h G-3a
(diagram 1)

After closing her Bishop line with 2.P-6f , IWANE's Rook moved to 7h . She select Sanken Bisha as the opening of this game . UEDA pushed the 8th file Pawn with 3...P-8e to disturb natural development of ISHIDA ryu hongumi .

While UEDA was making Ibisha Anaguma , IWANE made Kata mino gakoi and started making ISHIDA ryu hongumi formation .

(diagram 2)

13.R-7f P-5d
14.S-5f P-4d
15.S-6e P-5e
16.P-7d B-4b
17.B-9e Px7d
18.Rx7d P-9d
19.B-7g P-8f
20.Px8f P-6d
21.S-5d G-5b
22.P-6e P-5f
23.Px6d P*7c
24.R-7f Px5g+
25.P-6c+ Sx6c
26.Sx6c+ Gx6c
27.P*5h P*5f
28.Px5g Px5g+
29.P*5h P*5f
30.Px5g S*6e
(diagram 2)

IWANE floated her Rook with 13.R-7f and advanced her left Silver with 14.S-5f . UEDA pushed the 4th file Pawn with 14...P-4d to declined IWANE's Silver advance to 4e . But the move 14...P-4d was unscheduled move for UEDA .

IWANE advanced the 5f-Silver with 22.S-6e and she seemed to lead the game . But after some moves , IWANE's Rook was killed by UEDA's 6e-Silver .

(diagram 3)

31.Rx5f Sx5f
32.Px5f G-5c
33.P-5e G-4c
34.S*5d G-3c
35.S*5c P*5f
36.Sx4b+ Gx4b
37.P*6b G4b-3b
38.S-5c+ P-5g+
39.B*7e R*6g
40.G6i-5i +Px4g
41.Sx4g Rx4g+
42.P*4c P*5g
43.P-4b+ S*5h
44.+Px3b Gx3b
45.G*4h +R-4e
46.Bx5g Sx4i+
47.G5ix4i P*5f
48.B-7e S*5g
49.S*4c Gx4c
50.+Sx4c Sx4h=
51.Gx4h G*5g
52.G*3i Gx4h
53.Bx4h S*4g
54.S*4i Sx4h=
55.Sx4h B*6e
(diagram 3)

After IWANE's Rook and UEDA's Silver exchange , IWANE advanced the 5th file Pawn and tried to continue attacking . UEDA also attacked in the 5th file by making a promoted Pawn .

Both players attacked each other's Kakoi . The battle like this game , the difference of each player's Kakoi gives one player an advantage . In other words , Ibisha Anaguma is sometimes very effective in such a battle .

Until 55...B*6e , UEDA seemed to get a slight advantage .

(diagram 4)

56.P*4f +Rx4f
57.P*4g P-5g+
58.Px4f +Px4h
59.Gx4h Bx4c
60.R*6c B-7f
61.G*3i P*5g
62.S*4g G*5h
63.P-5d G*4i
64.G4hx4i Gx4i
65.G*3b S*3a
66.Gx3a Sx3a
67.Bx4d S*2b
68.Rx2c+ G*3c
69.Bx3c+ Nx3c
70.S*3b Sx3b
71.+Rx3b S*2a
72.S*4c G*3a
73.+Rx3c Sx3c
74.N*2c K-2b
75.Nx3a+ R*8h
(diagram 4)

IWANE tried to defend , but sacrificing a promoted Rook , UEDA attacked IWANE's Kakoi and defend her camp capturing the 4c-promoted Silver . After defended for a while , IWANE tried to attack UEDA's King . But until 75...R*8h , UEDA seemed to get win advantage .

(diagram 5)

76.S-3h Gx3i
77.+Nx2a K-2c
78.S*3b K-1d
79.G*2e Kx2e
80.P-2f Kx2f
81.G*3f K-1e
82.P-1f K-1d
83.P-1e K-2d
84.K-1g Rx3h+
85.K-2f G*2g
86.K-1f G*2f
(diagram 5)

After 172 moves , UEDA won the game .

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