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FRIDAY 2 OCTOBER 1970 275th day - 90 days to come


Jim Kraus sent me a copy of a letter criticising MONAD and a copy of his answer.

Rcd. a letter from Haar Hoolim with a clipping about a company which, among other items, puts out a children's arithmetic game LET'S THINK which has cards with positive and negative numbers and others with the arithmetic signs.

Rcd. a letter and an invoice from Frank Armbruster. He is sending me a puzzle called VECTOR (Shipped 9/28) that he intends putting on the market. He sent one to Martin Gardner and Hank Simmons and asked if I could suggest any others who would like to receive a copy.

Finished a rewrite of the rules for SLEUTH and BB typed them. Wrote a covering letter to Jim Kraus.

Packaged the large TANGLED WEB using a black back- ground and a transparant lid held on with rubber bands. Looked attractive. BB typed rules which were short and I glued them to the bottom of the package.


(cont. from 10/3) [10/9]

nother 7 after adding another 1 or more chips to the row he may "cover" again. (The 1 or more is my idea.) When a player stops due to 7's and there are "covering" chips the other player immediately removes all "covering" chips and then continues in the usual manner. A player may not cover a row of 6, since he can't add 2 chips to that row. (My idea.) When a player completes a row of 7 (on the last throw 1 die may be used) he takes them all and then continues his turn. [Perhaps it would be better to force the player to use both dice, since with only one dip the odds are very much in favor of continuing after getting a line of 6. Definitely.] When a player cannot replace chips when required, he has lost. [Started 10/9]