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1 SUNDAY - OCTOBER 1972
EIGHTEENTH SUNDAY AFTER TRINITY - 275TH DAY - 91 DAYS TO COME

The name Jim Bynum I saw at Martin's yesterday sounded familiar to me. Checked, and had sent me a game THE NINE CHECKER GAME.

BB got 15 more copies of NO WAY at Boston Road ^yesterday, this time with the numbers written in. I played with it and decided to allow a circle to be visited twice and have only 5 forbidden pairs. This way I am pretty sure that any setup can be solved. The less revisited circles the better the solution. Marylin's Eliot solved one, but couldn't do a second. Marylin picked up a book ELECTRONIC GAMES at a library sale. (It cost her 10¢.)

(cont. from 9/29)[9/30]

Martin said that any cube from MacMahon's set could by replicated by using the proper 8 others, and also interior side face joints match. By calling for the matching, Martin said, the problem becomes much easier. T.H. O'Beirne had a column in THE NEW SCIENTIST in 1961 and 1962. The best of it went into his book, PUZZLES AND PARADOXES. Martin suggested him as a possible G & P columnist. Conway spent hours trying to prove NINE OF SWORDS unique. Conway sent Martin a cube PUZZLE which is very tricky. It can't be solved unless the small pcs. [pieces] are placed first - being propped up. Martin suggested Tom Atwater trying to sell it. The pcs., which are to be formed into a 5 x 5 x 5 cube are as follows:- 2 of 1x2x4, 3 of 2x2x3, and 4 of 1x4x4. 1 of 1x1x1, 1 of 1x1x3, 3 of 1x2x2, 7 of 2x2x3, 1 of 1x3x3, and 1 of 1x4x4.