Kakukawari
( Bishop Exchange )

Kakukawari is relatively new formation in shogi history . Firstly Kakukawari 
appeared in the game of Soho Amano who are called " Kisei "(meaning the
Saint of Shogi ) and whose real power is 13 dan (Meijin's power is equal to 9dan)
. Kakukawari requires both Black and White players careful move ,
because each of them has a Bishop in his hand . Careless move causes
a opponet drop of bishop . 
Kakukawari is selected many professional Shogi player . Most famous 
players are Kouji Tanigawa , Tadahisa Maruyama .                           




Chapter 1.
Kakukawari Basic development

main line
1 P-7f P-7f
P-8d (a) P-8d
2 P-2f --- --- --+ P-2f
P-8e (b) G-3b P-8e
3 B-7g G-7h B-7g
G-3b   P-8e P-3d
4 G-7h <--- --- B-7g S-8h
P-3d Bx7g+
5 S-8h --+- --+ Sx7g
Bx7g+ P-4d S-4b (ii)
6 Sx7g (i) Bx2b+
(diagram0-2-1) Gx2b
(ii)
(i) White declines the Kakukawari .
(ii) Other way of Kakukawari . 




If Black decides to play Kakukawari , he can select the one of two ways .
First is , 1. P-7f P-8d 2. P-2f , and second is 1. P-2f P-8d 2. P-7f . 
Both is a same position , but according to White's move , different variations
are appeared . In short , it is the case where White chooses 1 . . . P-3d . 
( 1 . . . P-3d means that White declines the Black's Kakukawari and/or Yagura . )

In the first case , after 1. P-7f P-3d , there are many variations . 
See  opneing moves index . 

In the second case , after 1. P-2f P-3d , Black can select 2. P-2e or 2. P-7f . 
The defference between 2. P-2e and 2. P-7f is as stating below. 
  Black's move 2. P-2e enables White's Mukaibisha ( include Sakata - ryu) 
instead of making White 's Yokofutori impossible.
The case of 2. P-7f is exactly reverse in the case of 2. P-2e .

This line is modern Kakukawari opening . In the old type Kakukawari opening , 
Black's Rook's Pawn is moved at square 2e . Why the modern type is appeared .
Because without P-2e , Black's right Knight can move to 2e square , 
and Black can move P-2e whenever he likes .  



Two othere Black's second move choices exist . 
First is 1. P-7f P-8d 2. G-7h Takada ryu ( Takada opening )
This is very interesting opening , in my opinion . 
Second is 1. P-7f P-8d 2. B-7g !? , but this line has a fault . 
Because White's need not move his Rook's Pawn at 8e square . 

A(Takada ryu) B
1 P-7f
P-8d
2 G-7h B-7g
P-8e P-3d
3 B-7g S-8h
G-3b G-3b
4 S-8h G-7h
P-3d Bx7g
5 S-3h Sx7g
Bx7g+
6 Sx7g
(diagram2-0-A) (diagram2-0-B)

  


After diagram 0-2-1
6. . .S-4b 7. S-4h S-7b
diagram 2-0-1



After diagram2-0-1 various way is exist .

A B C D
8. P-9f P-1f P-4f P-2e
P-9d P-1d S-3c
9. P-4f P-3f

A . Tanigawa's modern Koshikakegin line
B . Aono's modern Kakukawari line
C . Simple Koshikakegin line
D. Classical Kakukawari line





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Detail of Kakukawari
Detail of Kakukawari