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| Designer | : | Bill Cutler |
| Craftsman | : | Bill Cutler |
| Category | : | Put-Together |
| Pieces | : | 23, plus the box |
| Each of the sixty-nine dimensions (3x23) is different and the pieces fill the box without voids. Twenty-three pieces is minimum number of piece with which this can be done. There are many twenty-three-piece solutions. Discovered by Bill in 1976. It was also independently discovered by Scott Kim. | ||