Objective
Win by moving one of your pawns onto the center square.
Pieces and Board
- Each player controls one color: White or Black.
- Only one pawn may occupy a square at a time.
- The outer rim is where pawns can be established and removed.
- Pawns move one square in any of 8 directions: horizontal, vertical, or diagonal.
Round Flow
- Phase 1 / Secret: each player secretly chooses 0 or 1.
- Phase 2 / Declare: each player publicly declares 0 or 1. Tell the truth or lie.
- Phase 3 / Keep or Switch: each player chooses whether to keep their secret value or switch it. Opponents see whether you kept or switched, but not the final value until resolution.
- Resolution: final values are revealed and points are awarded.
- Spending: players spend or bank points to affect the board.
Scoring
Final Values
Points Awarded
0 / 0
No points.
0 / 1
The player who chose 0 gains 2 points.
1 / 0
The player who chose 0 gains 2 points.
1 / 1
Both players gain 1 point.
The risk is choosing 0: it can win 2 points, but if both players choose 0, nobody gains anything.
Spending Order
The player with the higher bank spends first. If banks are tied, the player who locked their Phase 3 decision faster spends first. Players then alternate actions until both are done or out of points.
Spending Points
Each point equals one action.
- Establish Pawn: place one of your pawns on an outer-rim square. This can replace a pawn already there.
- Remove Pawn: remove any occupied outer-rim pawn, including your own.
- Move Pawn: move any pawn one adjacent square. Moving into an occupied square replaces/captures that pawn.
- Bank 1 / Bank All: save points for future rounds.
Board Click Defaults
- Tap an empty or opponent-owned outer-rim square to establish a pawn there.
- Tap your own outer-rim pawn to select it for movement.
- Tap any occupied inner square to select that pawn for movement.
- After selecting a pawn, tap an adjacent square to move it.
Use the menu buttons when you want precise control, such as removing your own pawn or forcing a move instead of replacing a rim pawn.
Player Chat
Use Player Chat to negotiate, mislead, threaten, or coordinate. Chat is available throughout the game.
CPU Profiles
- Tit for Tat: starts cooperative, then mirrors your previous final value.
- Dynamic: adapts to your patterns and tries to exploit your behavior, using only public information and revealed history.