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<u>Martin</u>said that any cube from <u>MacMahon</u>'s set could  
<u>Martin</u> said that any cube from <u>MacMahon</u>'s set could  
by replicated by using the proper 8 others, and also interior <s>side</s> face
by replicated by using the proper 8 others, and also interior <s>side</s> face
joints match. By calling for the matching, Martin said, the
joints match. By calling for the matching, Martin said, the
problem becomes much easier.
problem becomes much easier.
<u>T.H. O'Beirne</> had a column in <u>THE NEW SCIENTIST</u> in 1961 and 1962.
<u>T.H. O'Beirne</u> had a column in <u>THE NEW SCIENTIST</u> in 1961 and 1962.
The best of it went into his book, <u>PUZZLES AND PARADOXES</u>. Martin
The best of it went into his book, <u>PUZZLES AND PARADOXES</u>. Martin
suggested him as a possible <u>G & P</u> columnist.
suggested him as a possible <u>G & P</u> columnist.