36th Kio Match Game 1

[Black "Kubo Toshiaki, Kio"]
[White "Watanabe Akira, Challenger"]
[Event "36th Kio-sen, Game 1"]
[Date "February 6th 2011"]
1.P7g-7f     00:00:00  00:00:00
2.P3c-3d     00:00:00  00:01:00
3.P7f-7e     00:02:00  00:01:00

The Furigoma resulted in four pawns, so Kio Kubo started this first game with the 
black pieces. It has been 3 years and 7 months since Watanabe was the challenger 
in a title match, which is quite a long time considering the iron grip he has on 
the Ryu-O title. Kubo starts the match with the Quick Ishida opening, which is his
 specialty.

4.P8c-8d     00:02:00  00:04:00
5.R2h-7h     00:02:00  00:04:00
6.P8d-8e     00:02:00  00:04:00
7.R7h-7f     00:03:00  00:04:00

This looks very risky, because white can make a promoted bishop after 8.Bx8h+ Sx8h 
B*4e, but Sugai (4-dan) has been playing it with quite a lot of success lately, so 
this is definitely not easy.

8.B2bx8h+    00:03:00  00:09:00
9.S7ix8h     00:03:00  00:09:00
10.S3a-2b    00:03:00  00:09:00

Watanabe decides to stay out away from Kubo's opening preparation and opts for a 
slightly less sharp opening. Only slightly, because Kubo isn't in the mood for a 
slow build-up.

11.N8i-7g    00:03:00  00:09:00
12.S2b-3c    00:03:00  00:12:00
13.P7e-7d    00:06:00  00:12:00

This pawn sacrifice opens the diagonal to the rook, which becomes the main theme 
of the game.

14.P7cx7d    00:06:00  00:12:00
15.B*4f      00:06:00  00:12:00
16.B*6d      00:06:00  00:18:00
17.B4fx6d    00:18:00  00:18:00
18.P6cx6d    00:18:00  00:18:00
19.B*6c      00:28:00  00:18:00
20.B*5b      00:28:00  00:26:00
21.B6c-4e+   00:34:00  00:26:00
22.S7a-6b    00:34:00  00:29:00
23.+B4e-4f   00:39:00  00:29:00
24.S6b-7c    00:39:00  00:30:00
25.P6g-6f    00:39:00  00:30:00
26.B5b-6c    00:39:00  00:50:00
27.S3i-3h    00:54:00  00:50:00
28.B6c-5d    00:54:00  01:12:00
29.P6f-6e    00:58:00  01:12:00
30.P6dx6e    00:58:00  01:12:00
31.R7f-5f    01:09:00  01:12:00

Diagram 1

Black has a promoted bishop and this rook is strongly threatening Rx5d Px5d Nx6e.
Because white cannot defend with 32.R6b because of 33.Nx8e S6d Rx5d Px5d B*9e
which is good for black, the general opinion in the press room was that Kubo had 
the better position here. However, Watanabe doesn't succumb that easily.

32.S3c-4d!   01:09:00  01:14:00

Strong move. The reason will become clear a little later.

33.R5fx5d    01:34:00  01:14:00
34.P5cx5d    01:34:00  01:14:00
35.N7gx6e    01:34:00  01:14:00
36.P5d-5e    01:34:00  01:16:00

This is the point of 32.S4d. With 36.P5e white closes the important bishop diagonal 
and at the same time puts pressure on the black king, which is still in the center 
of the board.

37.+B4f-3f   01:40:00  01:16:00
38.G4a-5b    01:40:00  01:24:00
39.N6ex7c+   01:53:00  01:24:00
40.N8ax7c    01:53:00  01:24:00
41.B*6d      01:55:00  01:24:00
42.G6a-7b    01:55:00  01:34:00
43.B6d-3a+   02:09:00  01:34:00
44.N7c-6e    02:09:00  01:59:00
45.K5i-4h    02:25:00  01:59:00
46.P5e-5f    02:25:00  02:02:00

Diagram 2

Watanabe felt that if the game would turn into a long battle, black would have 
the advantage with the two promoted bishops. However, Kubo's reply was a surprise.

47.+B3f-4f!  02:39:00  02:02:00

Actually, Kubo wasn't too happy about his own position here as well, because he 
didn't see how he could attack the white king. 47.+B4f allows a free promoted 
pawn on 5g, but Kubo thought he had no choice but to try something out of the 
ordinary. If black simply answers with 47.Px5f, then 48.N5g= forks the two golds.

48.P5fx5g+   02:39:00  02:32:00
49.K4h-3i    02:39:00  02:32:00

The point of 47.+B4f is that black has used the check to put the king in the 
castle. At the same time, the promoted bishop is back on the diagonal of the 
rook, which is very unpleasant for white.

50.P*5e      02:39:00  02:32:00
51.P*5c      03:03:00  02:32:00
52.G5bx5c?   03:03:00  02:54:00

Watanabe is getting too pre-occupied with keeping the long diagonal closed. As Kubo 
pointed out in the post-mortem analysis, 52.Sx5c was the correct move here. For 
example, 53.+Bx5e P*6d P*5d S4b +Bx2a N*3e and white has the strong threat of +Px4g 
followed by N5g=. Watanabe agreed that he should have played it that way, but he 
also said that he didn't see N*3e, which is why he saw no merit in this variation.

53.S*4b      03:07:00  02:54:00
54.K5a-6b    03:07:00  02:54:00
55.S4bx5c=   03:08:00  02:54:00
56.S4dx5c    03:08:00  02:54:00
57.+B4fx5e   03:09:00  02:54:00
58.P*5b      03:09:00  02:54:00
59.P*5d      03:20:00  02:54:00
60.S5c-4d    03:20:00  02:56:00
61.+B5ex6e   03:21:00  02:56:00
62.R*6g      03:21:00  03:04:00

Diagram 3

This fork on king and horse looks very good, because when the promoted bishop moves,
 white suddenly has a very dangerous looking attack against the black king after 
Rx6i+. However, Kubo has the perfect counter.

63.N*6f!     03:26:00  03:04:00

Indirectly defends the promoted bishop and threatens the fork on king and rook with 
Nx7d next, so white has no time to pick up the gold on 6i.

64.+P5g-4h   03:26:00  03:13:00

After 64.K7a G6i-5h white has no chance to build an attack.

65.K3ix4h    03:27:00  03:13:00
66.S*5g      03:27:00  03:15:00
67.K4h-3i    03:27:00  03:15:00
68.S5gx6f+   03:27:00  03:15:00

Watanabe has cleverly removed the knight on 6f and again is threatening the promoted 
bishop and the gold on 6i.

69.P*6c!     03:35:00  03:15:00

Diagram 4

Again the perfect reply.

70.K6b-7a    03:35:00  03:26:00

After 70.Gx6c +B6e-6d Gx6d +Bx6d white has no defense, but 70.K7a is also not good 
enough for white.

71.+B6ex7d   03:38:00  03:26:00
72.P*7c      03:38:00  03:26:00
73.G*6b      03:39:00  03:26:00
74.G7bx6b    03:39:00  03:27:00
75.P6cx6b+   03:39:00  03:27:00
76.R8bx6b    03:39:00  03:27:00
77.P*6c      03:44:00  03:27:00
78.P7cx7d    03:44:00  03:27:00
79.P6cx6b+   03:44:00  03:27:00
80.K7ax6b    03:44:00  03:27:00
81.+B3a-6d   03:45:00  03:27:00
82.G*7b      03:45:00  03:34:00
83.G6i-5h    03:46:00  03:34:00
84.R6g-6i+   03:46:00  03:34:00
85.R*8a      03:47:00  03:34:00
86.P*6a      03:47:00  03:35:00
87.G*8b      03:47:00  03:35:00
88.G7b-6c    03:47:00  03:36:00
89.G8b-7b    03:47:00  03:36:00
Resigns      03:47:00  03:36:00

Final Diagram

A simple mate after 90.Kx7b R8b+ or 90.K5a Rx6a+, so Watanabe resigned here. A very 
impressive start by Kubo in this match. Watanabe just finished off Habu in the Ryu-O 
and he must have been very confident at the start of this match. A win in the first 
game would have gone a long way to forgetting the abysmal record he has against Kubo
(lost 10 of the last 12 games). Instead, Kubo played an almost flawless game, already 
putting a lot of pressure on Watanabe to win with the black pieces in game 2.