The two-player puzzle game mode is accomplished by dividing the board into two sections, each player chooses five blocks and is also given 4 small "filler" blocks of 1 and 2 squares. The first one to fit all their blocks perfectly into their half of the rectangle board wins.
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The game consists of 12 different pieces constructed of right-angled blocks so each piece is made of 5 "squares". (Think Tetris pieces, but 5 squares instead of 4).
The gameboard is constructed with a movable divider so one can take sets of 4 up to the whole set of 12 pieces and form them into a 5 block by X rectangle. (Where X = the number of woodblocks in your set.)
The two or three-player strategy game is accomplished on a square board divided into 64 smaller squares. Players take turns to place a piece on the gameboard. The first player who cannot place a piece anymore loses.