Sample Bot Code (Python)
import json
import random
EMPTY = 0
def main():
data = json.loads(input())
move_history = data.get("move_history", [])
board = [[EMPTY] * 15 for _ in range(15)]
for i, m in enumerate(move_history):
board[m["y"]][m["x"]] = 1 if i % 2 == 0 else 2
options = [
(x, y) for y in range(15) for x in range(15) if board[y][x] == EMPTY
]
if options:
x, y = random.choice(options)
print(json.dumps({"x": x, "y": y}))
else:
print(json.dumps({"error": "No valid move found or board is full."}))
if __name__ == "__main__":
main()I/O Format Specification
This document details the standard data exchange format between your AI bot and the referee system. Your bot must read a JSON string from standard input (stdin) and write its move as a JSON string to standard output (stdout).
1. Board Coordinate System
The platform uses a 15x15 board. The coordinate system is defined as `board[y][x]`, where `y` is the row (0-14, top to bottom) and `x` is the column (0-14, left to right).
2. Input Format (Referee -> Bot)
On your turn, the referee sends a single-line JSON string to your program's **stdin**. It contains:
move_history(Array): An ordered list of all moves. Each move is an object:{"x": int, "y": int, "player": int}(1=Black, 2=White).your_side(Integer): The side you are currently playing (1 for Black, 2 for White).
3. Output Format (Bot -> Referee)
Your AI must print a single-line JSON string to **stdout** with your chosen move:
{"x": 8, "y": 7}Example: Turn 3 (Black to move)
If Black played at (7,7) and White at (7,8), the board is:
... (x) ...
6 7 8
(y)┌─────────
6 │ . . .
7 │ . B .
8 │ . W .
9 │ . . .
The referee sends this JSON to your Bot (as Black):
{
"move_history": [
{"x": 7, "y": 7, "player": 1},
{"x": 7, "y": 8, "player": 2}
],
"your_side": 1
}