shogi , also known as Japanese chess, is a Strategy game, strategy board game for two players. It is one of the most popular board games in Japan and is in the same family of games as chess, Western chess, chaturanga, xiangqi, Indian chess, and janggi. ...

, Double Ranging Rook (also Double Swinging Rook, Mutual Swinging Rook) (相振り飛車 ''ai-furibisha'') is a class of Ranging Rook

opening Opening may refer to: Types of openings * Hole * A title sequence or opening credits * Grand opening of a business or other institution * Inauguration * Keynote * Opening sentence * Opening sequence * Opening statement, a beginning statemen ...

s in which both players choose a Ranging Rook position. The term does not apply when one player (or both) moves their rook to their respective fourth or third files ( Right Fourth File Rook, Sleeve Rook) as these are still considered to be Static Rook positions. Double Ranging Rook games were relatively rare compared with Double Static Rook and Static Rook vs Ranging Rook games. However, more recently, they have gained in popularity somewhat as Fairbairn noted in the 1980s. The most often played game among professionals is Black's Opposing Rook vs White's Third File Rook.

Opposing Rook vs Third File Rook

1. P-76 P-34. 2. P-66. 2...R-32.

Opposing Rook's early eighth pawn advance variation

3. B-77.

Opposing Rook's left silver development

3. S-78.

Third File Rook's Mino castle with delayed 35 pawn push variation

3...K-62. 4. S-67. 4...S-72. Here White starts to create the

Mino castle The Mino castle (美濃囲い ''minō gakoi'' or 本美濃囲い ''hon minō gakoi'') is a castle used in shogi. Mino castle is a very commonly used defensive formation that may be used within both Ranging Rook and Static Rook positions agai ...

structure giving up the possibility of making a Bear-in-the-hole castle. 5. B-77. Moving up the bishop to the seventh file allows a space on the 88 square for the rook to move to. Additionally, the bishop needs to be defended by the left knight as left silver and left gold will eventually be moved to different locations. 5...K-71. The king hunkers down. 6. R-88. 6...S-42. 7. P-86. 7...P-54. 8. P-85. 8...S-53. 9. K-48. 9...G49-52. 9. G69-58.

=Transpositions

= The opening position above can be reached by different move sequences, some of which are shown below. :

Third File Rook's early 3e pawn push variation

Double Opposing Rook

Third File Rook vs Third File Rook

Third File Rook vs Opposing Rook

Ishida vs Opposing Rook Early P14

1. P76 P34, 2. P75. Ishida position by Black. 2...P14. White's early edge pawn push. Black closing their bishop diagonal and aims for the Gold Excelsior castle. White aims for a

and develops the left knight for attacking. A left edge attack may be possible for White. Game example: Toshiaki Kubo vs Hisashi Namekata's

Meijin is one of the eight titles in Japanese professional shogi player, professional shogi, and is the most prestigious title, along with Ryūō. The word ( "excellent, artful", "person") refers to a highly skilled master of a certain field (the ...

ranking tournament on March 15, 2015.

Fourth File Rook vs Third File Rook

Fourth File to Third File Rook

4→3戦法 The player starts off playing a Fourth File Rook position with an open bishop diagonal that then transitions to a Third File Rook position after the player moves their king into an Incomplete

. This strategy is flexible to be used against a Ranging Rook opponent (for a Double Ranging Rook game) as well as against a Static Rook opponent.

Fourth File Rook vs Fourth File Rook

References

Bibliography

* * Fujii, Takeshi 2007 相振り飛車を指しこなす本. Vol. 1. * Fujii, Takeshi 2007 相振り飛車を指しこなす本. Vol. 2. * Fujii, Takeshi 2008 相振り飛車を指しこなす本. Vol. 3. * Fujii, Takeshi 2008 相振り飛車を指しこなす本. Vol. 4. * * * * * *