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Ed Pegg
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&[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/157e132e-644c-4afa-aed2-5e4fa5c195d8
![Mathematical Games: knots and crossing numbers][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=knotsandcrossingnumbers.png&userId=20103 [2]:...
Don't forget the "boring" binary counter.
Code for the top image. ...
![Mathematical Games: unit-distance graphs][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Main21082025.png&userId=20103 [2]:...
&[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/8684cd4b-2ac6-4b7a-9d6e-2209fca0687c
![Mathematical Games 30: Measuring the Universe][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Main26062025.png&userId=20103 [2]:...
&[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/28e1de97-8642-4081-ac6a-f0b971f8bd88
![A new Klein graph embedding][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Main27052025.png&userId=20103 [2]: https://www.wolframcloud.com/obj/1c2515a8-bd0a-4843-888c-c787141092b3
&[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/b0419916-2347-444a-9727-dd62dbe340a5