九格骨牌（Nonomino），又称九连块，是一种多格骨牌，每块以九个全等的正方形连成[1]，反射或旋转视作同一种共有1285种。若只有旋转视作同一种，共有2500种，若反射或旋转后相同的都视为不同的连结，共有9910种九连块[2]。
参考资料
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