28th Kio Match Game 4

[Black "Maruyama Tadahisa, Challenger"]
[White "Habu Yoshiharu, Kio"]
[Event "28th Kio-sen, Game 4"]
[Date "March 5th 2003"]
1.P7g-7f     00:00:00  00:00:00
2.P8c-8d     00:00:00  00:01:00
3.P2g-2f     00:00:00  00:01:00
4.G4a-3b     00:00:00  00:02:00
5.G6i-7h     00:00:00  00:02:00
6.P8d-8e     00:00:00  00:02:00
7.B8h-7g     00:00:00  00:02:00
8.P3c-3d     00:00:00  00:02:00
9.S7i-8h     00:00:00  00:02:00
10.B2bx7g+   00:00:00  00:02:00

In game 2 Habu played the Shikenbisha, but this time he is meeting 
Maruyama head on. The Kakugawari is Maruyama's favourite opening with black.

11.S8hx7g    00:00:00  00:02:00
12.S3a-4b    00:00:00  00:02:00
13.P9g-9f    00:00:00  00:02:00
14.P9c-9d    00:00:00  00:02:00
15.S3i-3h    00:00:00  00:02:00
16.S7a-7b    00:00:00  00:02:00
17.P4g-4f    00:00:00  00:02:00
18.P6c-6d    00:00:00  00:02:00
19.S3h-4g    00:00:00  00:02:00
20.S7b-6c    00:00:00  00:02:00
21.K5i-6h    00:00:00  00:02:00
22.K5a-4a    00:00:00  00:03:00
23.P1g-1f    00:00:00  00:03:00
24.P1c-1d    00:00:00  00:03:00
25.K6h-7i    00:02:00  00:03:00
26.K4a-3a    00:02:00  00:03:00
27.S4g-5f    00:12:00  00:03:00
28.S6c-5d    00:12:00  00:03:00
29.P6g-6f    00:12:00  00:03:00
30.P4c-4d    00:12:00  00:03:00
31.G4i-5h    00:12:00  00:03:00
32.G6a-5b    00:12:00  00:03:00
33.P3g-3f    00:12:00  00:03:00
34.P7c-7d    00:12:00  00:03:00
35.N2i-3g    00:21:00  00:03:00
36.N8a-7c    00:21:00  00:03:00
37.P2f-2e    00:25:00  00:03:00
38.S4b-3c    00:25:00  00:03:00
39.P4f-4e    00:27:00  00:03:00
40.P4dx4e    00:27:00  00:03:00
41.P3f-3e    00:28:00  00:03:00
42.S3c-4d    00:28:00  00:03:00
43.P2e-2d?!  00:30:00  00:03:00

The main line is to sacrifice pawns on 1e and 7e before exchanging pawns 
on the 2nd file. Of course, Maruyama knows this, but he has prepared 
something in a line that is less well known.

44.P2cx2d    00:30:00  00:03:00
45.R2hx2d    00:30:00  00:03:00
46.P*2c      00:30:00  00:03:00
47.R2d-2h    00:30:00  00:03:00
48.P6d-6e    00:30:00  00:28:00
49.P6fx6e    00:44:00  00:28:00
50.P8e-8f    00:44:00  00:51:00
51.P8gx8f    00:49:00  00:51:00
52.P7d-7e    00:49:00  00:53:00
53.P*2b!?    02:28:00  00:53:00

Diagram 1

The Reclining Silver variation of the Kakugawari has been analysed so 
deeply that new moves are often played very late in the game. So far the 
position is identical to the position in a game that Maruyama and Habu 
played 10 years ago. There are two moves that are considered the main 
line here: 53.S6f and 53.P1e (with or without the pawn exchange on 8f). 
53.S6f is good for white after 54.P9e Px9e P*9g Lx9g Rx8f (or P8f Px8f 
Rx8f if the pawns have not yet been exchanged) B*6a (P*8g R8a followed 
by N8e gives white an unstoppable attack) G5b-4c P*8g R8b P9d N8e. 
However, 53.P1e is also not very appealing for black as 54.Nx6e S6f 
Px7f (or P8f Px8f Px7f if the pawns have not been exchanged) P*2b P7g+ 
Sx7g Nx7g+ Gx7g P*7f Gx7f P*7e G7g S*7f G5b-6g ends in sennichite 
(Sx7g+ Gx7g G*7f etc.). The problem for black is that his pawn drop 
on 2b is simply ignored. Maruyama's idea is to play this pawn drop at 
a time when it can't be ignored. This certainly improves the black 
position, but this game seems to show that white still can get the 
upper hand.

54.K3ax2b    02:28:00  01:18:00
55.P1f-1e    02:28:00  01:18:00
56.N7cx6e    02:28:00  01:43:00
57.S7g-6f    03:15:00  01:43:00
58.P*8h      03:15:00  01:47:00
59.K7ix8h    03:15:00  01:47:00
60.P7ex7f    03:15:00  01:47:00
61.P1ex1d    03:15:00  01:47:00
62.P7f-7g+   03:15:00  02:06:00
63.S6fx7g    03:15:00  02:06:00
64.N6ex7g+   03:15:00  02:06:00
65.G7hx7g    03:15:00  02:06:00
66.P*7f      03:15:00  02:06:00
67.G7gx7f    03:15:00  02:06:00
68.P*7e      03:15:00  02:07:00
69.G7f-7g    03:15:00  02:07:00
70.S*7f      03:15:00  02:07:00
71.P1d-1c+   03:18:00  02:07:00
72.L1ax1c    03:18:00  02:15:00
73.L1ix1c+   03:24:00  02:15:00
74.N2ax1c    03:24:00  02:20:00
75.P*1d      03:24:00  02:20:00

Diagram 2

The critical position. If black gets the time to play Px1c+ followed 
by +Px2c, the white position collapses. Can white use the two moves he 
has to give his attack decisive power?

76.S7fx7g+   03:24:00  03:04:00

Habu took a long time for a move that the commentators thought obvious. 
The conclusion in the press room was: 76.Sx7g+ Nx7g (Kx7g L*7f K6h Rx8f 
wins because it threatens mate after G*6i) P*8g (not B*6i Px1c+ K3a P*7h 
and it is hard to find a good move) K7h L*2d! and white wins because 
the black attack is slowed down too much after Px1c+ K3a P*2e. Habu 
didn't like the position after P*2e, but it seems Rx8f P*8i P7f Px2d 
P8h+ Px8h B*8i is winning for white. 

77.N8ix7g    03:24:00  03:04:00
78.L*2f!?    03:24:00  03:20:00

Diagram 3

A big surprise for everyone. If Habu would have won this game, it would 
have been considered a brilliant move. It is not bad, as it seems that 
white can still win with it. However, in hindsight Habu would probably 
have preferred to play the line with L*2d given above. 

79.R2hx2f    03:51:00  03:20:00

No choice. After 79.R1h P*8g K7h B*3f white wins. 

80.B*6i      03:51:00  03:20:00

The first point of forcing the rook to 2f is that white can now take 
the gold on 5h at any convenient moment. The second point is that black 
can't play 81.G6h because of 82.Rx8f K7i P*6g! (Bx8g+? P*7h gives black 
chances to get back in the game) and because the rook is hanging on 2f, 
black can't take this pawn with the silver. Furthermore, white also wins 
after Kx6i Px6h+.

81.P1dx1c+   03:51:00  03:20:00
82.K2b-3a    03:51:00  03:20:00
83.S*7h      03:51:00  03:20:00
84.P*8g      03:51:00  03:37:00
85.S7hx8g    03:51:00  03:37:00
86.G*7f      03:51:00  03:40:00
87.N*7i      03:51:00  03:40:00
88.G7fx8g    03:51:00  03:40:00
89.N7ix8g    03:51:00  03:40:00
90.S*7f      03:51:00  03:41:00
91.N*7i      03:54:00  03:41:00

Diagram 4

92.R8bx8f?   03:54:00  03:56:00

An uncharacteristic blunder in the endgame. Habu takes 15 minutes, but 
is unable to find the hidden win he had in this position. 92.Sx8g+ Nx8g 
N*7f K9h Rx8f G*9g B7h+ P*8i N8h+! and now Px8h is answered by Rx5f R2i 
R2f! and white wins.

93.P*7h      03:54:00  03:56:00

Now white is unable to keep threatening mate and black gets the time to 
take over the attack.

94.B6ix5h+   03:54:00  03:56:00
95.+P1cx2c   03:54:00  03:56:00
96.P9d-9e    03:54:00  03:57:00
97.+P2cx3b   03:56:00  03:57:00
98.K3ax3b    03:56:00  03:57:00
99.B*2c      03:56:00  03:57:00
100.K3b-4c   03:56:00  03:57:00
101.B2cx3d+  03:56:00  03:57:00
102.K4c-4b   03:56:00  03:57:00
103.R2f-2b+  03:56:00  03:57:00
104.P*3b     03:56:00  03:57:00
105.+B3d-2d  03:56:00  03:57:00
106.G*3c     03:56:00  03:57:00
107.P*4c!    03:56:00  03:57:00

Diagram 5

Winning. 108.Gx4c is answered by G*6b, 108.Kx4c by G*3d Gx3d (K4b Gx3c) 
G*4b Gx4b +Bx3d and 108.K5a by G*7b.

108.S5dx4c   03:56:00  03:57:00
109.+B2d-1c  03:56:00  03:57:00

Moves the attacked bishop and threatens mate at the same time. The black 
attack isn't slowed down at all.

110.R8f-8a   03:56:00  03:57:00
111.P*8b     03:56:00  03:57:00
112.R8a-7a   03:56:00  03:59:00
113.L*7d     03:56:00  03:59:00
114.P*2a     03:56:00  03:59:00
115.+R2b-2h  03:58:00  03:59:00

This makes the black position completely safe.

116.S7fx8g=  03:58:00  03:59:00
117.N7ix8g   03:58:00  03:59:00
Resigns      03:58:00  03:59:00

Final Diagram

Habu has no choice but to resign, even though he still has four generals 
around his king while Maruyama has only two knights. Maruyama now levels 
the match at two games all and is only one win away from pulling off an 
amazing comeback. Judging from this game, he seems to have luck on his 
side at the moment. Will this last long enough to take the Kio title 
from Habu?