Double Side Pawn Capture

Side Pawn Capture

☖ pieces in hand: 角歩歩歩

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

☗ pieces in hand: 角歩歩歩

In shogi, Double Side Pawn Capture (相横歩取り ai-yokofudori) is a Side Pawn Capture (Double Static Rook) opening in which both players capture each other's side pawn (as opposed to only Black taking White's side pawn) and White has exchanged bishops.

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Development

From the typical sequence of regular side pawn capture (1. P-7f, P-3d; 2. P-2f, P-8d; 3. P-2e, P-8e; 4. G-7h, G-3b; 5. P-2d, Px2d; 6. Rx2d, P-8f; 7. Px8f, Rx8f; 8. Rx3d), the basic sequence for double side pawn capture continues with 8. ...Bx8h+; 9. Sx8h, Rx7f, so that White can capture the side pawn in turn (see attached Diagram).

At this point, Black must defend against the white rook capturing the gold in 7h. There are different options: 10. P*7g, 10. N-7g or 10. S-7g, the latter being the favorite among professional players. After 10. S-7g, one option is 10. ...R-7d, after which Black has two options: Exchanging rooks with 11. Rx7d, or rejecting the exchange by retreating to 11. R-3f. In the latter case, the game becomes a slow game.

Bibliography

Hosking, Tony (1996). The art of shogi. The Shogi Foundation. ISBN 978-0-95310-890-9.
Kitao, Madoka (2011). Joseki at a glance. Translated by Kawasaki, Tomohide. Nekomado. ISBN 978-4-9052-2501-0.

External links

Wikibooks has textbooks related to 相横歩取り.

HIDETCHI's YouTube videos: Double Side Pawn Capture
Yamajunn's Shogi Opening Traps: Ai Yokofutori Part 1
Shogi Shack: Double Yokofu Dori 2

Shogi Openings

Static Rook

Right Fourth File Rook
Static Bishop Left Mino
Right King
Snowroof
Sleeve Rook
First File Rook
Reclining Silver
Climbing Silver
Climbing Gold
Ureshino
Extreme Rushing Silver
Duck
Feint 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