Good luck with the dice, tactics, and the art of math in Colour Square! Each turn, the active player rolls five dice colored, red, green, blue, yellow, and white. They choose two of the non-white dice, then write the value on each die in an empty space on their player sheet matching the color of the die. (The player sheet shows scoring blocks made of four colored squares; each block has a value in the center, e.g. 6, 14, or 20.) All other players write the value on the white die in any empty space on their player sheet. If you fill the four colored squares of a block, and the sum of the numbers you wrote matches the value at the center of that block, circle that value; you'll earn that many points at game's end. All other players must X out this block and no longer write in it. If you fill a block and the numbers sum higher than the value, cross out the value; you'll lose 10 points for this block at game's end, but other players can continue to try to score it. If you complete and score adjacent blocks, mark out the bridge that connects these blocks. Each marked bridge is worth 5 points. Twice during play, you can discard a number instead of writing, but you lose points equal to the discarded numbers. When a player has no more open blocks, each other player takes one final turn rolling solely for themselves, then they cross out the value for all blocks with open spaces, losing 10 points for each one. Whoever has the highest score wins. Colour Square includes two types of player sheets with different values and slightly different rules.

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