Fortress vs Right Fourth File Rook

Fortress vs Right Fourth File Rook (矢倉対右四間飛車) is a Double Static Rook opening in which one player chooses a Fortress position and their opponent uses a Right Fourth File Rook position.

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Development

Fortress vs Right 4th File Rook
up to move 7☖ pieces in hand: –

9	8	7	6	5	4	3	2	1
香	桂		金	王	金	銀	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	歩	歩	7
	角		銀				飛		8
香	桂		金	玉	金	銀	桂	香	9

☗ pieces in hand: – 4. P-56

Fortress vs Right 4th File Rook
up to move 9☖ pieces in hand: –

9	8	7	6	5	4	3	2	1
香	桂		金	王	金	銀	桂	香	1
	飛		銀				角		2
歩		歩	歩	歩	歩		歩	歩	3
						歩			4
	歩								5
		歩	歩	歩					6
歩	歩	銀			歩	歩	歩	歩	7
	角						飛		8
香	桂		金	玉	金	銀	桂	香	9

☗ pieces in hand: – 4... P-25
5. S-77

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

Another Double Static Rook game includes playing Right Fourth File Rook against a Fortress position.

If White is going to attempt Right Fourth File Rook, then after Black advances their central pawn on the fifth move, White should push their rook pawn to the central file forcing White to protect the second with their silver.

Fortress vs Right 4th File Rook
up to move 10☖ pieces in hand: –

9	8	7	6	5	4	3	2	1
香	桂		金	王	金	銀	桂	香	1
	飛		銀				角		2
歩		歩		歩	歩		歩	歩	3
			歩			歩			4
	歩								5
		歩	歩	歩					6
歩	歩	銀			歩	歩	歩	歩	7
	角						飛		8
香	桂		金	玉	金	銀	桂	香	9

☗ pieces in hand: – 5... P-64

Fortress vs Right 4th File Rook
up to move 13☖ pieces in hand: –

9	8	7	6	5	4	3	2	1
香	桂		金	王	金	銀	桂	香	1
	飛						角		2
歩		歩	銀	歩	歩		歩	歩	3
			歩			歩			4
	歩								5
		歩	歩	歩					6
歩	歩	銀			歩	歩	歩	歩	7
	角	金		金			飛		8
香	桂			玉		銀	桂	香	9

☗ pieces in hand: – 6. G-78 S-63
7. G-58

After this, White starts developing the Right Fourth File Rook structure by advancing their sixth file pawn (that is, their pawn that is the fourth file from the right side of their board). White aims to move their right silver to the central file through the sixth file and their rook to the sixth file while Black continues building their Fortress position.

References

斎藤 2016.

Bibliography

斎藤, 慎太郎 (2016). 対矢倉: 左美濃新型急戦. マイナビ出版.

External links

Shogi Maze: Yagura: Migi Shikenbisha Strategy
Yet Another Shogi Site: Yagura Rapid Attack: Right hand fourth file rook

Shogi Openings

Static Rook

Double Static Rook

Fortress	Double Fortress Spearing the Sparrow Morishita System Central Rook Fortress Waki System Akutsu Rapid Attack vs Right Fourth Rook Yonenaga Rapid Attack Ninja Silver Crab Silvers
Double Wing	Floating Rook Retreating Rook Primitive Climbing Silver Tsukada Special Twisting Rook Rook on Pawn No Guard
Bishop Exchange	Reclining Silver (Kimura joseki, G48 R29) Rushing Silver Climbing Silver Tempo Loss Wrong Diagonal
Side Pawn	B-33 Rapid Attack B33 B45 Double Side Pawn P*23 N-33 Rapid Attack K-41 Aono Rx33+

Counter-Ranging Rook

Static Rook Bear-in-the-hole Maruyama Vaccine Iijima Bishop Pullback Straight Line Bear-in-the-hole King's Head Vanguard Pawn Subway Rook Left King Takada System Center Vanguard Pawn Central Rook vs Side Pawn
Rapid Attack	Left S-57 Rapid Attack Yamada joseki Saginomiya joseki Ponpon Knight Spearing the Bird Super High Speed S-37 Three-Pawn Sacrifice

Ranging Rook

Bishop Head Pawn Feint Ranging Rook Twisting Rook Tonari Dokkan Rook
Central	Primitive Central Rook Cheerful Central Rook Silver Horns Bear-in-the-hole Central Rook Edge Bishop Flatfish Central Rook Fortress Central Rook vs Side Pawn
Fourth File	Fujii System Bear-in-the-hole Fourth File Rook King's Head Silver Bishop Exchange Fourth File Rook Leghorn Special Tateishi Yōryū Fourth File Rook
Third File	Bear-in-the-hole Third File Rook Kōyan Manabe Ishida (Quick Ishida, 3–4–3, Fourth-to-Third, R-77) 1...R-32 1.R-78 Demon Slayer New Demon Slayer Tomahawk
Opposing	Sakata American B-33 Direct Ōno
Double Ranging	Opposing vs Third Double Third Double Opposing Opposing vs Fourth Opposing vs Central Double Central Left Bear-in-the-hole Central Rook

Other

Handicap

Castles

Other Theory

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