Buoyant Rook

In shogi, Buoyant Rook (浮き浮き飛車 or ウキウキ飛車 ukiukibisha) or the Deceiver (目くらまし me kuramashi or 浮き飛車目くらまし ukibisha me kuramashi) is a surprise Static Rook opening in which the player's rook is advanced to the file directly above their line of pawns (rank 6 for Black or rank 4 for White) behind an advanced rook pawn.[1]

Buoyant Rook
☖ pieces in hand: –
987654321 
香桂銀金王金銀桂香1
 飛       2
歩歩歩歩歩歩角歩歩3
      歩  4
       歩 5
       飛 6
歩歩歩歩歩歩歩 歩7
 角       8
香桂銀金玉金銀桂香9
☗ pieces in hand: –

Once positioned on this rank, the player threatens to capture with their rook any pawns that are advanced by their opponent.

The term float (浮く uku) is used to refer to the positioning of the rook on rank 6 or 4 where it is undefended. A rook in this position is known as a floating rook (浮き飛車 ukibisha) as in, for instance, the Double Wing Attack Floating Rook opening (相掛かり浮き飛車 aigakari ukibisha). The word 浮き浮き ukiuki means light-hearted or cheery as if metaphorically floating.

Development

1. P-26 P-34, 2. P-25.

2. ...B-33. If White wants to prevent a pawn exchange on the second file, they must move the bishop to the third file to protect the 24 square. This move will also allow White to develop a Ranging Rook position.

3. R-26. This is the unexpected floating of the rook to the rank 6 that characterizes the Buoyant Rook opening.

At this point, White has a choice between a Static Rook and a Ranging Rook response.

Against Ranging Rook

Against Static Rook
Buoyant Rook vs Static Rook
☖ pieces in hand: –
987654321 
香桂銀金王金銀桂香1
 飛       2
歩歩歩歩歩角歩歩3
 歩    歩  4
       歩 5
      飛 6
歩歩歩歩歩歩歩 歩7
 角       8
香桂銀金玉金銀桂香9
☗ pieces in hand: –

3. ...P-84. Static Rook.

See also

References
  1. 湯川 2015, p. 300–302, その２: 目くらまし.

Bibliography
  • 湯川, 博士 [in Japanese] (2015). 奇襲大全. マイナビ出版. ISBN 978-4-83995-787-2.
  • Kitao, Madoka (2011). Joseki at a glance. Translated by Kawasaki, Tomohide. Nekomado. ISBN 978-4-9052-2501-0.
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