Subway Rook

Subway Rook vs
Bear-in-the-hole Fourth File Rook

☖ pieces in hand: –

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

☗ pieces in hand: –

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Subway Rook (地下鉄飛車 chikatetsubisha) is an uncommon Static Rook shogi opening with the rook on the bottom rank 9 (or rank 1 for White) that supports an attack on the ninth file.

It may be useful against an opponent playing a Ranging Rook Bear-in-the-hole position.

The name comes from the way the rook moves from second file to the ninth file on the bottom rank as if it were an underground subway.

This bottom rank positioning of the rook is shared by a few other strategies such as the Pinwheel and Right King openings.

Overview

It's an attack opening used against Bear-in-the-hole Ranging Rook and Right King. Starting with Black's moving the knight to 85, it's a powerful attack concentrated on 93 by rook, bishop, left knight and left lance. It's particularly effective against Bear-in-the-hole, since the king has no escape route and it's possible to do checkmate in one gulp. In addition, in a Double Static Rook if the rival uses Right King, it's possible to start the attack in a location close to that king.

Although boasting superb defense power, this opening requires moving almost all pieces from the 1st to the 2nd rank, which takes a lot of moves, and also makes the formation constrained. For this reason, this opening is seldom used.

Bibliography

豊川孝弘著『パワーアップ戦法塾』NHK出版、2002年、ISBN 4-14-016122-1
塚田泰明監修、横田稔著『序盤戦! 囲いと攻めの形』、高橋書店、1997年 ISBN 4-4711-3299-7

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