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Rules

1.    The player using the black pieces is attempting to form a Y (a continuous path joining sides 1, 3, 5 or sides 2,4,6).  The player using the white pieces is attempting to form a line (a continuous path joining opposite sides 1,4 or 2,5 or 3,6).  The corner is considered part of both adjacent sides.

                Side 1
              1 2 3 4 5 6 
             / / / / / / 7
         A- . . X . . . / 8 
        B- . . X . . . . / 9 
Side 6 C- . . X . . . . . / 10  Side 2
      D- . . . X . . . . . / 11
     E- . . . . X X . . . . / 
    F- . . . X X . X . . . . 
     G- . . X . . . X X . . 
      H- . X . . . . . X X 
Side 5 I- X . . . . . . .  Side 3
        J- . . . . . . . 
         K- . . . . . . 
              Side 4

Diagram 1: A Win for Black

                Side 1
              1 2 3 4 5 6 
             / / / / / / 7
         A- . . O . . . / 8 
        B- . . O . . . . / 9 
Side 6 C- . . O . . . . . / 10  Side 2
      D- . . . O . . . . . / 11
     E- . . . . O . . . . . / 
    F- . . . . O . . . . . . 
     G- . . . . O O . . . . 
      H- . . . . . O . . . 
Side 5 I- . . . . . O . .  Side 3
        J- . . . . O . . 
         K- . . . O . . 
              Side 4

Diagram 2: A Win for White

2.        To eliminate the possibility of a tie, if the black player forms a line without also forming a Y in the same turn, or if the white player forms a Y without also forming a line in the same turn, he loses.  I.e., you cannot achieve your opponent s victory condition unless you simultaneously achieve your own.

3.        Because the conditions for winning are different for the white and black player (the white player has a much easier time joining two sides instead of three), at the beginning of the game it is not decided which player plays with which color.  Instead a variation of the pie rule (you cut, I choose) is used.  During the first part of the game the players are in the contract phase.  During this phase both players place black pieces.  At any point instead of placing a piece, either player may pass his turn by issuing the move  black .  At that point it is his opponent s turn with the white pieces (and this ends the contract phase).

4.        During the contract phase neither player may place a piece on the edge of the board.  This is because some moves on the edge can actually be disadvantageous.  It also eliminates the possibility of the victory conditions being met before the contract phase has ended.

References and History

Unlur was invented in 2001 by Jorge Gomez Arrausi and was the winner of Abstract Games Magazine s Unequal Forces Game Design Competition.  There is an Unlur homepage containing rules and strategy information, and realtime play is available at Ludoteka.  There is a mailing list for Unlur at Yahoo Groups.