Compulsory Jump Rules & 10×10 Damii Regulations

DAMII is contested on a 10×10 checkered board consisting of 100 squares (50 dark playable squares and 50 light non-playable squares). Each side commands 20 pieces at the start of the game.

• The board is oriented with a dark corner square at the bottom-left of each player.
• White pieces occupy rows 6 through 9 (20 pieces).
• Black pieces occupy rows 0 through 3 (20 pieces).
• Rows 4 and 5 constitute the neutral central combat zone at game commencement.
• White always moves first in standard tournament play.

If on a player's turn one or more capture options are available, the player IS FORBIDDEN from making a non-capturing quiet move. The DAMII server validation engine will reject any quiet move when a capture is open and will highlight only legal capture paths.

• Capturing is compulsory for both Men and Kings.
• Men (regular pieces) can capture BOTH forwards and backwards diagonally over an adjacent opponent piece into an empty landing square immediately beyond.
• If multiple capture paths are available to a player, the player is free to choose ANY valid capturing sequence.
• Once a capture begins, the player must continue jumping if the landing square presents subsequent capture opportunities (multi-hop jump sequences).
• A piece cannot jump over the same enemy piece more than once during a single turn.
• Captured pieces remain on the board until the complete jumping sequence concludes, at which point all jumped pieces are lifted simultaneously.

A Man reaches promotion when it lands on the opponent's farthest row (the baseline: row 0 for White, row 9 for Black). Upon promotion, the piece becomes a King with expanded diagonal movement capabilities.

• Flying Movement: A King can move diagonally across ANY number of unoccupied dark squares in a single move, both forwards and backwards.
• Long-Range Capture: A King can jump over an enemy piece located anywhere along its unobstructed diagonal line of sight, provided there is at least one empty square beyond that enemy piece.
• Flexible Landing: The King may land on ANY unoccupied square beyond the captured piece along the same diagonal trajectory.
• Multi-Directional King Chains: Upon landing, if the King can execute a subsequent diagonal jump in another direction, it must continue capturing.
• Temporary Transit Rule: If a Man reaches the baseline during a jump sequence but must immediately jump backward out of the baseline, it does NOT crown as a King — it remains a Man.

To guarantee fair tournament pacing and eliminate stalling tactics, matches operate under strictly monitored server clocks.

• Standard Move Clock: Each player receives 60 seconds per turn in standard matches (15 seconds in Blitz mode).
• Timeout Forfeiture: Failing to execute a valid move before the turn clock hits zero results in an instant timeout defeat.
• Reconnection Grace Period: If a player experiences network disconnection, a 90-second grace timer is initiated.
• Heartbeat Verification: The client sends automated 1.5s heartbeats. If a player fails to reconnect before the grace countdown expires, the active opponent is awarded a win by disconnection forfeiture.
• Intentional Tab Abandonment: Closing the browser tab during an active wager match invokes instant escrow settlement in favor of the remaining player.

A game of Damii concludes under the following definitive scenarios:

• Total Elimination: A player captures all 20 of the opponent's pieces.
• Blockade / No Legal Moves: A player whose turn it is has no legal moves remaining (all surviving pieces are trapped) loses immediately.
• Resignation: A player may voluntarily resign at any point through the arena interface.
• Threefold Repetition: If the exact same board state, piece distribution, and turn player occurs 3 times, either player may claim a Draw.
• Draw by Mutual Agreement: In standard matches, players may propose and accept a mutual draw if neither side can break an endgame stalemate.