Third File Rook

In shogi, Third File Rook (三間飛車 sankenbisha) is a class of Ranging Rook (振り飛車) openings (戦法) in which the rook (飛) is positioned on the third file if played by White (後手) or the seventh file if played by Black (先手).

Traditional Third File Rook

Third File Rook (Black)
 
△
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲
Third File Rook (White)
 
△
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲

Traditional Third File
 
△ pieces in hand: –
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ pieces in hand: –

3. ...   R-3b
Traditional Third File
 
△ pieces in hand: –
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ pieces in hand: –

4. P-2e   ...

3. ... R-3b. White shows their intent to play Third File Rook.

4. P-2e. Pushing their rook pawn up to the middle rank is an important move if Black wants to prevent White from forming an Ishida formation and thus limit White's range of possible future attack strategies. After the pawn push, White must protect their 2d square with their bishop in order to prevent the pawn exchange.

If Black makes a different move (such as 4. S-4h, for instance), then White will likely aim for the Ishida structure by pushing their third file pawn up and then moving their rook up to the d rank. The elevated rook can then defend the d rank and prevent Black from making a pawn exchange on the second file.

Traditional Third File
 
△ pieces in hand: –
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ pieces in hand: –

4. ...   B-3c
Traditional Third File
 
△ pieces in hand: –
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ pieces in hand: –

5. K-6h   S-4b

4. ... B-3c. White uses the bishop to protect the second file.

Traditional Third File
 
△ pieces in hand: –
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ pieces in hand: –

6. K-7h   K-6b
Traditional Third File
 
△ pieces in hand: –
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ pieces in hand: –

7. P-5f   K-7b
8. G4i-5h   ...

Traditional Third File
 
△ pieces in hand: –
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ pieces in hand: –

8. ...   P-5d
Traditional Third File
 
△ pieces in hand: –
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ pieces in hand: –

9. P-9f   P-9d

Traditional Third File
 
△ pieces in hand: –
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ pieces in hand: –

10. P-3f   G4a-5b
Traditional Third File
 
△ pieces in hand: –
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ pieces in hand: –

11. P-4f   K-8b

Ishida

Ishida Style (Third File Rook)
 
△
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲
 
(with Mino castle)

Ishida Style or Ishida Plenary Formation (石田流 Ishida ryu)

The Third File Rook Ishida openings are named after the 17th century shogi master Kengyo Ishida.

Quick Ishida

Quick Ishida
△ Pieces-in-hand: none
9 8 7 6 5 4 3 2 1
a
b
c
d
e
f
g
h
i
▲ Pieces-in-hand: none
Main article: Quick Ishida

Quick Ishida (早石田 haya Ishida) is a Third File Rook opening characterized by an early advancement of Black's seventh file pawn (or White's third file pawn).[1][2][3]

Quick Ishida is related to the slow variant of Ishida in that both openings advance their seventh file pawn to the e rank.

The strategy initially has White aiming to attack Black's bishop head and Black aiming to break White's camp on the seventh file with the threat of several different bishop drop positions.

The Quick Ishida position can lead to a number of traps if the opponent does not defend properly.

See also

References

  1. ↑ Kitao 2011, p. 203–210, Chap. 2: Static Rook vs. Swinging Rook: 3rd-file Rook, Quick Ishida.
  2. ↑ Kitao 2013, p. 135–150, Chap. 2: Ishida style: Quick Ishida.
  3. ↑ Hosking 2013, p. 217–219, Part 2, Chap. 3: Third File Rook: Quick Ishida attack.

Bibliography

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