DropZone is a quickie based on the pieces of the first order square China Labyrinth.

boardMaterial
Here is the board. It can either have a blue or a yellow border and pieces placed against them must have matching edges in either case.

Below it is a set of pieces. Each player has one and they have a fixed orientation, so they cannot be rotated. Each set is completely dual with regard to the two colours. Together the pieces of one set contain every possible combination of blue and yellow over the North, South, East and West edges.


dropzone pieces There are six types of pieces in each set: 1 four, 4 threes, 2 straight twos, 4 hooked twos, 4 ones and 1 blank, regardless of whether one looks at the blues or the yellows

Rules
Players alternately place a piece in the right orientation on any vacant square. Pieces placed next to other pieces of either player must match in terms of beams and blanks.

Restriction
If the second player on his first move places a piece of the same type as the piece on the board, its pattern may not mirror the first piece's pattern in the horizontal or vertical central axis, nor may it be placed in a rotational symmetric position.

Goal
Last player to make a move wins, unless the last move fills the board completely. In that case its a draw and a simultaneous solution of a puzzle.






How I invented ... DropZone


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