Chess Over GMRS

Playing chess over radio is a tradition as old as amateur radio itself. Early ham operators played chess over Morse code, spelling out moves one character at a time. GMRS makes it easier - you can announce a move in two or three words and be done with your transmission in under five seconds. All you need is a board, some patience, and a good signal.

Why it works on radio

Chess is perfectly suited to radio play because each move is a self-contained piece of information. Standard algebraic notation is compact and unambiguous. A full game can span multiple sessions - write your moves down and pick up exactly where you left off next weekend. Some operators keep a running game going with the same partner for weeks.

Equipment needed

• Two GMRS radios (one per player)
• A chess board and pieces for each player
• Paper and pencil to record moves

Both players need identical board setups. Set up your boards normally before the game starts and agree on which side each player controls - White or Black - before you begin.

Notation

Use standard algebraic notation for all moves. This is the universal chess shorthand:

• Pieces: K (King), Q (Queen), R (Rook), B (Bishop), N (Knight). Pawns have no letter prefix.
• Squares: file letter (a–h) followed by rank number (1–8). Example: e4, f6, d5.
• Captures: use "x" - Nxf3 means knight captures on f3.
• Castling: O-O (kingside), O-O-O (queenside).
• Check: add "+" - Bb5+ means bishop to b5 with check.

On radio, spell out any ambiguous letter using the NATO phonetic alphabet. Say "bishop to echo-4" rather than "bishop to e-4" to avoid confusion between similar-sounding letters.

Setup

1. Both players set up their boards off the air before calling.
2. Agree on who plays White and who plays Black.
3. White moves first - the player controlling White makes the opening transmission.
4. Simplex is preferred for long games. Agree on a channel before you start.

Turn structure

Keep transmissions short. State your callsign, your move, and "over." The other player confirms the move, makes their own move, and passes it back. If a move is unclear, ask for a repeat immediately - never silently assume what was said.

Example transmissions

White opens:

"WRYW364, this is WRZX891. My move: pawn to echo-4. Over."

Black confirms and replies:

"Copy echo-4. My move: pawn to echo-5. Over."

A more complex exchange later in the game:

"WRYW364, my move: knight to foxtrot-3. Over."

"Copy November-foxtrot-3. My move: bishop captures foxtrot-3. Over."

Castling:

"WRYW364, my move: castle kingside. Over."

"Copy Oscar-Oscar. My move: rook to delta-8. Over."

Check:

"WRYW364, my move: queen to hotel-5, check. Over."

Multi-session games

Chess games often run long. It's completely normal to pause a game and resume another day. Both players write down every move in order. When you resume, announce the move number you're picking up from so both players can confirm their boards are in sync before continuing. A quick verbal check - "I have White's last move as rook to delta-1 on move 22, confirm?" - prevents a lot of confusion.

Tips for smooth play

• Record every move on paper as it's announced, not after - it's easy to lose track mid-game.
• If you mishear a move, say "Say again your move. Over." before updating your board.
• Spell out piece names clearly - Bishop and Pawn sound similar when signals are marginal.
• Keep a standard move format: piece, destination square. Don't mix in commentary until after the "over."