Fetlar Hnefatafl Rules
1. The game is played on a board with 11×11 squares and with the below initial set-up. (I did copy from the site rules)
2. The central square, called the throne. The throne is always hostile to the attackers (Black), but only hostile to the defenders (White) when it is empty. The king is able to re-enter the throne, and all pieces may pass the throne when it is empty.
3. The four squares in the corners are restricted and may only be occupied by the king. The four corner squares are hostile to all pieces, except the King, which means that they can replace one of the two pieces taking part in a capture.
4. To win the game: The objective is for the king to enter any of the four corner squares. In that case, the king has escaped and his side wins. The attackers win if they can capture the king before he escapes.
5. The attackers' side moves first, and the game then proceeds by alternate moves. All pieces move any number of vacant squares along a row or a column, like a rook in chess.
6. Capture: All pieces except the king are captured if they are sandwiched between two enemy pieces, or between an enemy piece and a hostile square, along a column or a row. The two enemy pieces should either be on the square above and below or on the square to the left and to the right of the attacked piece. A piece is only captured if the trap is closed by a move of the opponent, and it is, therefore, allowed to move in between two enemy pieces. A captured piece is removed from the board and is no longer active in the play. The king may take part in captures.
You can also capture an enemy warrior by sandwiching him between one of your pieces and a refuge square or the throne square. However, when the King is occupying the throne square, a single white warrior next to the throne square cannot be captured in this way.
7. The king is captured when the attackers surround him in all four cardinal points, or on three side if he occupies the square next to the throne, the attackers must occupy all surrounding squares in the four points of the compass except the throne.
The king cannot be captured on the edge, UNLESS he is the only white piece remaining on the board and is completely surrounded by black.
8. Draws: The game is declared a draw if:
- Either player is unable to make a move, for instance, if all your pieces are blocked in and no move is therefore possible
- The same move or sequence of moves is repeated three time
- Since the repetition rule does apply to this board: The consent of your opponent is also required.