49th Oza Match Game 3

Black: Habu Yoshiharu, Oza
White: Kubo Toshiaki, Challenger
49th Oza-sen, Game 3, October 5th 2001
1.P2g-2f     00:00:00  00:00:00

In the Kio match, Habu also won the first two games against Kubo. 
Then, he experimented in the third game with the Ai-furibisha, but 
lost without much of a fight. This time he sticks to his game plan, 
despite the comfortable lead he holds in the match. This is probably 
because of the upcoming Ryu-O title match with Fujii. Getting this 
Oza match out of the way by winning in straight games would make his 
preparation for the re-match with Fujii much easier. Also, some extra 
practice with static rook against ranging rook might help.

2.P3c-3d     00:00:00  00:01:00
3.P7g-7f     00:00:00  00:01:00
4.P4c-4d     00:00:00  00:02:00
5.S3i-4h     00:01:00  00:02:00
6.R8b-4b     00:01:00  00:04:00
7.K5i-6h     00:02:00  00:04:00
8.P9c-9d     00:02:00  00:06:00
9.K6h-7h     00:03:00  00:06:00
10.S7a-7b    00:03:00  00:06:00
11.P5g-5f    00:05:00  00:06:00
12.S3a-3b    00:05:00  00:08:00
13.P2f-2e    00:08:00  00:08:00
14.B2b-3c    00:08:00  00:08:00
15.B8h-7g    00:08:00  00:08:00
16.S3b-4c    00:08:00  00:10:00
17.B7g-6h    00:08:00  00:10:00
18.R4b-2b    00:08:00  00:11:00
19.S4h-5g    00:08:00  00:11:00
20.K5a-6b    00:08:00  00:14:00
21.K7h-8h    00:14:00  00:14:00
22.K6b-7a    00:14:00  00:21:00
23.S5g-6f    00:20:00  00:21:00
24.P4d-4e    00:20:00  00:21:00
25.K8h-9h    00:23:00  00:21:00
26.G4a-5b    00:23:00  00:22:00
27.S7i-8h    00:26:00  00:22:00
28.P6c-6d    00:26:00  00:27:00
29.G4i-5i    00:30:00  00:27:00
30.S4c-5d    00:30:00  00:30:00
31.G6i-7h    00:41:00  00:30:00
32.K7a-8b    00:41:00  00:49:00
33.G5i-6i    00:46:00  00:49:00
34.P7c-7d    00:46:00  00:53:00
35.G6i-7i    00:47:00  00:53:00
36.P9d-9e    00:47:00  00:59:00
37.P1g-1f    01:24:00  00:59:00
38.P1c-1d    01:24:00  00:59:00
39.R2h-3h    01:55:00  00:59:00

Diagram 1

Both players have built strong formations. Habu's castle is almost as 
strong as the anaguma. Having the king on 9h instead of 9i is a weakness, 
but not unusual in professional games. Still, it is a bit hard to find 
an attack for either player. 39.R3h is an attempt to make some noise on 
the third file, but this is easily countered.

40.R2b-3b    01:55:00  01:30:00
41.R3h-2h    02:10:00  01:30:00
42.R3b-2b    02:10:00  01:36:00
43.R2h-2f    02:10:00  01:36:00
44.B3c-4d    02:10:00  01:39:00
45.R2f-2g    02:21:00  01:39:00
46.S5d-6c    02:21:00  01:44:00
47.P3g-3f    02:24:00  01:44:00
48.P5c-5d    02:24:00  01:45:00
49.N2i-3g    02:26:00  01:45:00
50.P6d-6e    02:26:00  01:58:00
51.S6f-7g    02:30:00  01:58:00
52.P5d-5e    02:30:00  02:23:00

Habu has tested the waters a little with some rook maneuvering, but this 
didn't gain him much. Both players have a four general castle and Kubo 
decides it is time to open the game. White seems to have come out of the 
opening with a slight advantage, but this might be an illusion. There is 
still everything to play for here.

53.N3gx4e    02:58:00  02:23:00

Diagram 2

The first real choice. Habu rejected the obvious 53.P2d, because he 
didn't like the position after 54.Px2d Rx2d Rx2d Bx2d R*2g R*4a Rx2d+ 
Rx4d+ B*2h and black now can't play Nx4e because then the promoted rook 
dies after P*4c.

54.P5ex5f    02:58:00  02:28:00
55.P2e-2d    02:58:00  02:28:00
56.P2cx2d    02:58:00  02:30:00
57.R2gx2d    02:58:00  02:30:00
58.R2bx2d    02:58:00  02:40:00
59.B6hx2d    02:58:00  02:40:00
60.B4d-5e    02:58:00  02:40:00
61.P*5d      03:18:00  02:40:00
62.S6cx5d    03:18:00  02:47:00
63.B2d-4f    03:18:00  02:47:00
64.B5ex4f    03:18:00  03:10:00
65.P4gx4f    03:18:00  03:10:00
66.B*6d      03:18:00  03:12:00
67.B*8f      03:39:00  03:12:00
68.B6dx8f    03:39:00  03:13:00
69.S7gx8f    03:39:00  03:13:00
70.B*5e      03:39:00  03:16:00
71.R*5c!?    04:08:00  03:16:00

Diagram 3

The most important point in this game. This is an rather unexpected rook 
move and it seems unlikely that the players took it into consideration 
when they exchanged rooks. Kubo is a little lucky that this surprising 
move turns out to be alright for him.

72.G5b-6c    04:08:00  03:42:00
73.B*3b?     04:08:00  03:42:00

Diagram 4

The key variation was 73.P*5b, but both players had seen that white 
can counter this with a surprising rook drop of his own: 74.R*2b!. 
Then, after 75.P5a+ G6a-6b B*3a R3b Rx6c+ Gx6c B5c+ P5g+ +P5b P*5a 
+Bx6c S5dx6c +P5c can be expected and "maybe this might end in 
sennichite" (Habu). "I spent a lot of time thinking about what to 
do after the promotion of the bishop on 5c, but I had no idea" (Kubo). 
Another variation is 75.Rx6c+ S5dx6c N5c+ Sx5b +Nx5b Gx5b G*5d Bx4f 
S*7a K9b (there is a fork on rook and king after Kx7a) B*4d R2h+ 
Bx1a+ and "it seems that the attack is bit thin, but..." (Habu). 
It is probably hard for white to defend this well in an actual game. 
	In any case, Habu should have played 73.P*5b here. It seems 
that finding the surprising reply R*2b made this move look worse than 
it actually was. Habu tries to play it differently, but 73.B*3b is a 
blunder that quickly ends the game.

74.P*4c!     04:08:00  03:44:00

It seems Habu underestimated the strength of this simple defense. 
Suddenly, black has no good way to attack anymore.

75.R5cx5d+   04:12:00  03:44:00
76.G6cx5d    04:12:00  03:45:00
77.B3bx4c+   04:12:00  03:45:00
78.G5d-4d!   04:12:00  03:54:00

Diagram 5

Another good defensive move by Kubo. Tempting is to take the knight 
on 4e with sente, but after Px4e black still has +Bx2a and/or +Bx6e 
(with attack on a bishop that is now undefended). Also, black can use 
a gold in hand to strengthen his attack.

79.+B4cx6e   04:15:00  03:54:00

No choice. Another point of having the gold on 4d, is that white can 
shut out the promoted bishop after 79.+Bx2a P*4c!. If then +B3a white 
simply plays P5g+ and wins in the attack. The black promoted bishop on 
6e is better positioned, but black has no real attack and white can 
feast on the defending generals with the combined attack of tokin, 
bishop and two rooks.

80.B5ex4f    04:15:00  03:59:00
81.N4e-5c+   04:15:00  03:59:00
82.P5f-5g+   04:15:00  03:59:00
83.S*6b      04:15:00  03:59:00
84.R*4h      04:15:00  04:10:00
85.P*4g      04:19:00  04:10:00
86.B4fx1i+   04:19:00  04:10:00
87.P*5e      04:25:00  04:10:00
88.R*3i      04:25:00  04:18:00
89.+B6e-6d   04:28:00  04:18:00
90.L*7c      04:28:00  04:19:00
91.P7f-7e    04:28:00  04:19:00
92.+P5gx6g   04:28:00  04:29:00
93.G7hx6g    04:28:00  04:29:00
94.R3ix7i+   04:28:00  04:31:00
95.P*6h      04:28:00  04:31:00
96.R4h-4i+   04:28:00  04:32:00
Resigns      04:29:00  04:32:00

Final Diagram

The game is finished after 97.Sx7i +Rx7i and black has no defense and 
no mate. This game was over very quickly after Habu's mistake on the 
73rd move. It must have been a great boost to Kubo's confidence to win 
this game so easily after Habu dominated in game 1 and 2. Maybe this is 
all the young challenger needs to get back in this match. The next game 
he can't afford to lose as well, but he will feel much better now than 
after game 2 and also has the advantage of playing with the black 
pieces in game 4.