Coach
A case · you decide
Renji redeploys a captured piece
Renji — a chess player new to shogi who keeps forgetting that captures are not gone
Renji has just captured a silver. In chess that would end the piece's life. He reaches to press his clock, thinking the exchange is over.
In shogi a captured piece does not leave the game — it enters the captor's HAND, unpromoted, and on a later turn may be DROPPED onto (almost) any empty square instead of making a board move.
This is why shogi rarely simplifies to an empty board: material you win becomes material you can redeploy exactly where it hurts, often as a sudden attacker next to the enemy king.
Renji holds a silver in hand and the enemy king is exposed. What is the shogi-sound idea?
Captured is not gone. Every piece you take becomes a piece you can aim.
A case · you decide
Aiko decides whether to promote
Aiko — a player who promotes on reflex without asking whether the promoted piece is actually better here
Aiko's knight reaches the enemy camp. She reaches to flip it — a promoted knight moves like gold. But this knight was doing a specific job as a knight.
In the promotion zone (the opponent's furthest three ranks) most pieces MAY promote to a stronger form; a piece with no legal unpromoted move (a pawn or lance on the last rank, a knight on the last two) MUST promote.
Promotion is usually good — but a promoted knight moves like gold and LOSES the knight's unique jump. If that jump was the point, promoting throws away the very move you wanted.
Aiko's knight can promote, but its forking jump is exactly what threatens two pieces next move. What is sound?
Promote for a reason, not a reflex. Ask what each form can do, then choose.
A case · you decide
Tomo respects the drop rules
Tomo — a player who tries the flashiest drop without checking the two rules that forbid it
Tomo spots a pawn drop that would deliver instant checkmate. He reaches for it, delighted.
Two drop rules constrain the reserve: NIFU forbids dropping a pawn onto a file that already holds your unpromoted pawn; and UCHIFUZUME forbids a pawn DROP that gives immediate checkmate (a pawn-drop that merely gives check is fine).
The dojo only shows you legal drops — but knowing WHY a tempting drop is illegal is the difference between guessing and understanding.
Tomo's pawn-drop would be immediate checkmate. What does he do?
The reserve is powerful because it is governed. Learn the two rules and the drop becomes precise, not lucky.
A case · you decide
Hana builds a castle first
Hana — a player who attacks before the king has any shelter
Hana sees a promising push on the far side and wants to charge — her king is still sitting on its starting square, bare.
Because captured pieces come back as drops, an exposed king in shogi is in constant danger — the opponent can conjure an attacker out of hand next to it at any moment.
Strong players spend the opening building a CASTLE — a shaped wall of gold and silver generals around a tucked-away king — BEFORE committing to an attack. Safety first is not timid here; it is survival.
Hana can launch her attack now or spend two moves finishing her castle. What is sound?
Shelter the king, then attack freely. The castle is what makes aggression safe.
A case · you decide
Goro spends a piece for the initiative
Goro — a player who counts material and never lets a piece go
Goro can crash a silver into the enemy castle. He will lose the silver — but the king's shelter cracks open, and the silver goes into his hand.
Shogi rewards initiative near the king. Because a captured piece returns to hand, "sacrificing" a piece to tear open a castle often just relocates that piece into your reserve, ready to drop back in.
Counting only material misses this: the tempo and the open king can be worth far more than the piece, and the piece is not even truly lost — it is in hand.
Goro can sacrifice a silver to break the castle open and keep the attack going. What is sound?
Material is negotiable near the king — and nothing you give is truly gone. Attack with the whole reserve in mind.
A case · you decide
Renji and Tomo: a drop that is legal after all
Renji & Tomo — a player with a captured pawn in hand, and a friend who knows exactly when a pawn drop is illegal
Renji wants to drop a pawn on a file to attack a gold. Renji already has a piece on that file: a pawn that promoted last turn.
Renji is about to give up, thinking it is nifu.
Tomo checks the piece: it is a promoted pawn now, not a pawn.
Can Renji drop the pawn on that file?
Renji saw the move. Tomo made sure it was allowed.
A case · you decide
Goro and Hana: check your own castle before you sacrifice
Goro & Hana — an attacker ready to give a silver to open the enemy king, and a friend who built the castle behind him
Goro sees that giving up a silver would open the enemy king. Hana asks a question first.
After the sacrifice, the opponent will have a silver in hand, plus anything else they capture.
Hana's castle around their own king still has its golds in place.
What should they check before Goro sacrifices?
Goro's sacrifice works because Hana's castle holds.