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In shogi, Right Fourth File Rook (右四間飛車 migi shikenbisha) is a Static Rook opening in which the rook is positioned on the fourth file if played by Black or the sixth file if played by White.

Typically, Right Fourth File Rook develops the right silver into a Reclining Silver attacking structure.

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Fortress vs Right Fourth File Rook

Right Fourth File Rook vs Fourth File Rook

This section needs expansion. You can help by adding to it. (November 2016)

A Right Fourth File Rook strategy may be played against a Ranging Rook position such as Fourth File Rook. In a Right Fourth File Rook vs Fourth File Rook game, each player's rook will be directly opposing each other on the fourth file supported by attacking silvers. Below shows an example of Black's Right Fourth File Rook against White's Fourth File Rook.

1. P-76 P-34, 2. P-26 P-44, 3. S-48 R-42. The first six moves are standard Static Rook vs Fourth File Rook piece development. (See: Left Silver-57 Rapid Attack vs Fourth File Rook for explication.)

vs Fourth File Rook☖ pieces in hand: – 9 8 7 6 5 4 3 2 1   香 桂 銀 金 王 金 銀 桂 香 1           飛   角   2 歩 歩 歩 歩 歩     歩 歩 3           歩 歩     4                   5     歩     歩   歩   6 歩 歩   歩 歩 歩   歩 7   角       銀   飛   8 香 桂 銀 金 玉 金   桂 香 9 ☗ pieces in hand: –

vs Fourth File Rook☖ pieces in hand: – 9 8 7 6 5 4 3 2 1   香 桂 銀 金 王 金 桂 香 1           飛 銀 角   2 歩 歩 歩 歩 歩     歩 歩 3           歩 歩     4                   5     歩     歩   歩   6 歩 歩   歩 歩 銀 歩   歩 7   角         飛   8 香 桂 銀 金 玉 金   桂 香 9 ☗ pieces in hand: –

4. P-46. The Right Fourth File Rook opening starts by advancing Black's fourth file pawn. This allows an opening for the left silver to pass through the front line of pawns.

vs Fourth File Rook☖ pieces in hand: – 9 8 7 6 5 4 3 2 1   香 桂 銀 金 王 金   桂 香 1           飛 角   2 歩 歩 歩 歩 歩 銀   歩 歩 3           歩 歩     4                   5     歩   銀 歩   歩   6 歩 歩   歩 歩 歩   歩 7   角           飛   8 香 桂 銀 金 玉 金 銀 桂 香 9 ☗ pieces in hand: –

vs Fourth File Rook☖ pieces in hand: – 9 8 7 6 5 4 3 2 1   香 桂 銀 金 金   桂 香 1       王   飛   角   2 歩 歩 歩 歩 歩 銀   歩 歩 3           歩 歩     4                   5     歩   銀 歩   歩   6 歩 歩   歩 歩   歩   歩 7   角           飛   8 香 桂 銀 金 玉 金   桂 香 9 ☗ pieces in hand: –

vs Fourth File Rook☖ pieces in hand: – 9 8 7 6 5 4 3 2 1   香 桂 銀 金   金   桂 香 1       王   飛   角   2 歩 歩 歩 歩 歩 銀   歩 歩 3           歩 歩     4                   5     歩   銀 歩   歩   6 歩 歩   歩 歩   歩   歩 7   角       飛   8 香 桂 銀 金 玉 金   桂 香 9 ☗ pieces in hand: –

vs Fourth File Rook☖ pieces in hand: – 9 8 7 6 5 4 3 2 1   香 桂 銀 金   金   桂 香 1   王   飛   角   2 歩 歩 歩 歩 歩 銀   歩 歩 3           歩 歩     4                   5     歩   銀 歩   歩   6 歩 歩   歩 歩   歩   歩 7   角 玉     飛       8 香 桂 銀 金 金   桂 香 9 ☗ pieces in hand: –

vs Fourth File Rook☖ pieces in hand: – 9 8 7 6 5 4 3 2 1   香 桂 銀 金   金   桂 香 1   王       飛   角   2 歩 歩 歩 歩 銀   歩 歩 3 歩         歩 歩     4                   5 歩   歩   銀 歩   歩   6 歩   歩 歩   歩   歩 7   角 玉     飛       8 香 桂 銀 金   金   桂 香 9 ☗ pieces in hand: –

vs Fourth File Rook☖ pieces in hand: – 9 8 7 6 5 4 3 2 1   香 桂 金     桂 香 1   王 銀   金 飛     2   歩 歩 歩 銀 角 歩 歩 3 歩       歩 歩 歩     4                   5 歩   歩   銀 歩 歩 歩   6   歩   歩 歩   桂 歩 7   角 玉   金 飛     8 香 桂 銀 金     香 9 ☗ pieces in hand: –

White's silver-54 variation

This section needs expansion. You can help by adding to it. (January 2017)

See also

• Fortress opening
• Fourth File Rook
• Static Rook

Notes

1. For comparison, in typical Static Rook position, Black advances their central file pawn instead of the fourth file pawn.

References

1. 杉本 2003, p. 223 ff.

Bibliography

• 杉本, 昌隆 (2003). 杉本流四間飛車の定跡. 創元社. ISBN 4422750895.
• Kitao, Madoka (2011). Joseki at a glance. Translated by Kawasaki, Tomohide. Nekomado. ISBN 978-4-9052-2501-0.

External links

• Global Shogi: Right 4th File Rook (Migi Shikenbisha-右四間飛車)

• Shogi openings
• Static Rook openings