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The duck is a brick - pieces cannot move through the square occupied by the duck. However, knights can jump over the duck. Each player’s turn has 2 steps: After moving a piece, the duck must be moved to a different and empty square. There is no check or checkmate. Capture the opponent’s king to win. (Invented by Dr Tim Paulden.)
(kaŝi) Se vi restigas la musmontrilon sur la piktogramo pri lia membreco, aperos ŝpruchelpilo kun liaj ĉefaj detaloj. (pauloaguia) (Montri ĉiujn konsilojn)