Bughouse
Bughouse is a team chess variant played on two boards where partners immediately pass captured pieces to each other for drops on their own board on any later turn.
- Category
- Rules
- Also in
- Strategy, Online Chess
- Difficulty
- Intermediate
- Also known as
- Bughouse chess, Tandem chess, Siamese chess
Bughouse is a team chess variant played on two boards simultaneously. Partners sit opposite each other; one plays White while the other plays Black. Captured pieces are passed immediately to the teammate, who may drop them on their own board on any later turn.
The game combines standard chess movement with Crazyhouse-style drops. On each turn a player may either move a piece already on the board or drop a captured piece from their hand onto any empty square. Pawns cannot be dropped on the first or eighth ranks. A drop must resolve check if the king is under attack.
checkmate or resignation on either board ends the match for both teams. The team that delivers the checkmate wins.
Because pieces flow between boards, material balance on one board often depends on what is happening on the other. A player who sacrifices material can immediately strengthen their partner’s position. This creates constant tension: an apparently lost position on one board can be rescued by a timely piece transfer, while a quiet position can explode once captured pieces arrive.
Core strategic ideas
- Piece economy matters more than on a single board. Trading pieces can be advantageous if the captured units strengthen the partner faster than they weaken your own position.
- Coordination between partners is essential. Good teams discuss which pieces to keep, which to trade, and when to push for a mate on one board to relieve pressure on the other.
- Tempo and timing become critical. A quiet move on one board may be better than an immediate capture if it allows the partner to land a decisive drop first.
- Pawn structure is fluid. Because pawns can arrive via drops, traditional pawn weaknesses can be repaired or created instantly, shifting the value of open files and outposts.
Key takeaways:
- Bughouse teams exchange captured pieces for immediate drops on the partner board.
- Checkmate or resignation on either board ends the match for both teams.
- Sacrificing material on one board can instantly strengthen the partner’s position.
- Piece transfers create constant swings that reward coordination over single-board tactics.
- Pawns may not be dropped on the first or eighth ranks.
Frequently asked questions
- How do captures work in Bughouse?
- Captured pieces are passed immediately to your partner, who may drop them on their own board on any later turn.
- What ends a Bughouse game?
- Checkmate or resignation on either board finishes the match for both teams, and the team that delivered the mate wins.
- Where can pawns be dropped?
- Pawns may not be dropped on the first or eighth ranks.
- How does strategy change from standard chess?
- Sacrificing material on one board can instantly strengthen the partner’s position, so piece economy and coordination matter more than single-board tactics.
- Can a drop resolve check?
- Yes, a player must drop a piece to get out of check if the king is under attack.
About the reviewer
James came to chess late, and he'll tell you that's part of the appeal. He picked up the game in his thirties, mostly out of boredom, and found something he wasn't expecting: a puzzle that never quite runs out of new…