[{:board {[0 1] :owner/none,
          [1 2] :owner/none,
          ;; More associations ...
          [2 0] :owner/none},
  :player :owner/cross},
 {:board {[0 1] :owner/none,
          [0 0] :owner/cross,
          ;; More associations ...
          [2 0] :owner/none},
  :player :owner/circle}]