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Design and Copyright : Trevor Wood. ☞ Double Unique.
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| Pieces | 8 |
| Selection | random |
| Goal | 4×4×4 |
| Holes | 0 |
| Solutions | 1 |
AAAA | CCCF | CCCF | CCHF AAAA | BBBF | BBBB | GHHB GEEE | EEEF | GEEF | GHHH GDDD | GDDF | GDDF | GHDH
| Pieces | 8 |
| Selection | random |
| Goal | 8×8×1 |
| Holes | 0 |
| Solutions | 1 |
AAAAGGGG AAAAGGEG BBCCGEEE BBCCCEEE BBCCCEFF DBBHHHFF DDDDHHHF DDDHHFFF