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Opusball - ConstellationsA remade equator puzzle. This variants shows the (western) zodiac symbols on the twelve middle pieces.
Opusball - Digital formulaA remade equator puzzle. This variants shows digits ans arithmetic symbols on the pieces.
Opusball - IdiomA remade equator puzzle. This variants shows mandarin letters.

Opusball - ZodiacA remade equator puzzle. This variants shows the chinese zodiac symbols on the twelve middle pieces.

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