Step 2: Ranging Rook Castles
Castle Guide › Step 2 / 3
In ranging rook (furibisha) play, your Rook moves sideways and your King shelters on the right side of the board. The Mino Castle is the cornerstone of ranging rook defense — and it upgrades naturally into the High Mino and Silver Crown, giving you a clear development path as the game progresses.
Mino Castle 美濃囲い
※ The left side of this diagram shows a Fourth File Rook attacking formation. The exact arrangement of attacking pieces changes depending on which ranging rook variation you play.
Design idea: Tuck the King to the edge so three Gold/Silver pieces connect naturally.
The Mino Castle is practically the symbol of ranging rook — if you play ranging rook, learning the Mino is all you really need to start. It has three big strengths. First, moving the King far to the right takes it well away from the battlefield: ranging rook swings the Rook to the center-left, so the left side becomes the early and middlegame battleground, and castling on the right keeps the formation safe and intact deep into the endgame.
Second is the stable Gold–Silver connection: the Silver and Gold to the King's left link firmly and hold as a wall to the very end. Third is room to grow — in a long game you can wait moves while upgrading to High Mino or Silver Crown, so your play rarely stalls. Sturdy for the moves it costs and highly extensible, which is why it appears so often.
High Mino 高美濃囲い
Design idea: Fix the Mino's weak King's-head with a Gold advance.
The Mino Castle is strong against side attacks but has a major weakness: diagonal attacks by the Bishop. High Mino advances the Mino's Gold by one rank, making it much more resistant to attacks that aim at the King with a Bishop or Knight.
It costs a few more moves than the Mino, but it keeps a good deal of the Mino's lateral strength while reinforcing the top — a well-balanced upgrade. Once the plain Mino feels insufficient, aiming for this shape raises your durability naturally.
Silver Crown 銀冠
Design idea: Cap the King with a Silver to gain strength in every direction.
Silver Crown takes High Mino a step further, placing the Silver directly above the King — the Silver sits on the King's head like a "crown," which is where the name comes from. It has two defining features. One is durability against attacks from every direction: with the Silver overhead it also resists attacks from above (King's-head and edge attacks), while remaining strong diagonally and laterally, so it won't be mated quickly.
The other is how hard the King is to mate after fleeing to the edge. In the late endgame a King that escapes to the 1g area is awkward to check, and that brief resilience often decides the game. The Mino → High Mino → Silver Crown path is one of the joys of ranging rook, and static rook players can build a mirrored version on the left. Just note that it costs moves, so against a fast attacker it may not be ready in time.
Double Gold 金無双
Design idea: Line up Gold and Silver to meet top-down attacks with numbers.
Double Gold is mainly used in mutual ranging rook. The eye-catching feature is the King, Golds, and Silver all lined up horizontally. In mutual ranging rook both players swing their Rooks to the left, so pressure on the King comes more from above (via the Rooks) than from the side. Double Gold lines up Gold and Silver to maximize resistance to exactly that overhead attack.
The two Golds side by side connect very firmly and force the opponent to spend moves breaking through, even in the endgame. It is weak, however, against diagonal attacks by a Bishop or Knight, so stay alert there. It's a different lineage from the Mino family, but well worth knowing if you play mutual ranging rook.