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Logic Puzzle: Find All Domino Squares with 12 Points

Four dominoes forming a square, each one with the number of spots, clockwise direction: two and three, three and one, one and four, and four and two. The number twenty is inside the square.

The sum of the points of the dominoes in this square is 20.

Find all the squares similar to this one where the sum of the points of the dominoes is 12.

Note that the touching ends must match.

Solution
Four dominoes forming a square, each one with the number of spots, clockwise direction: zero and one, one and five, five and zero, and zero and zero. The number twelve is inside the square.
Four dominoes forming a square, each one with the number of spots, clockwise direction: zero and two, two and four, four and zero, and zero and zero. The number twelve is inside the square.
Four dominoes forming a square, each one with the number of spots, clockwise direction: one and zero, zero and four, four and one, and one and one. The number twelve is inside the square.
Four dominoes forming a square, each one with the number of spots, clockwise direction: one and two, two and three, three and zero, and zero and one. The number twelve is inside the square.
Four dominoes forming a square, each one with the number of spots, clockwise direction: two and three, three and one, one and zero, and zero and two. The number twelve is inside the square.
Four dominoes forming a square, each one with the number of spots, clockwise direction: three and one, one and two, two and zero, and zero and three. The number twelve is inside the square.

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