Sorry, no. The answer is that you can not so tile a checkerboard with the corner cut-outs. But how do you prove that?
On Fri, Oct 20, 2017 at 9:10 AM, Raul Miller <[email protected]> wrote: > This??? > > ('';<,~a:){~*63|i.8 8 > > Thanks, > > -- > Raul > > > On Fri, Oct 20, 2017 at 11:48 AM, Roger Hui <[email protected]> > wrote: > > A checkerboard related problem: If you cut out two opposite corners of > an > > 8-by-8 checkerboard, can you tile the remaining 62 squares with 2-by-1 > > rectangles? > > > > > > On Fri, Oct 20, 2017 at 8:28 AM, Linda Alvord <[email protected]> > > wrote: > > > >> > >> This gets to the heart of the problem! An addition table. Then, finding > >> what's left when you divide numbers in half. > >> > >> Now, picking your symbols should be fun. > >> It seems like a good day in kindergarden. > >> > >> Linda > >> > >> Sent from AOL Mobile Mail > >> > >> > >> -----Original Message----- > >> From: Roger Hui <[email protected]> > >> To: Programming forum <[email protected]> > >> Cc: Linda Alvord <[email protected]>; bill lam < > [email protected]> > >> Sent: Fri, Oct 20, 2017 11:02 AM > >> Subject: Re: [Jprogramming] unicode > >> > >> > >> 2|+/~i.8 > >> 0 1 0 1 0 1 0 1 > >> 1 0 1 0 1 0 1 0 > >> 0 1 0 1 0 1 0 1 > >> 1 0 1 0 1 0 1 0 > >> 0 1 0 1 0 1 0 1 > >> 1 0 1 0 1 0 1 0 > >> 0 1 0 1 0 1 0 1 > >> 1 0 1 0 1 0 1 0 > >> > >> '.X'{~2|+/~i.8 > >> .X.X.X.X > >> X.X.X.X. > >> .X.X.X.X > >> X.X.X.X. > >> .X.X.X.X > >> X.X.X.X. > >> .X.X.X.X > >> X.X.X.X. > >> > >> > >> > >> On Fri, Oct 20, 2017 at 1:03 AM, Linda Alvord <[email protected]> > >> wrote: > >> > >> > >> > >> Sent from AOL Mobile Mail > >> > >> > >> Can you make a checker board?<div><span style="font-size: 16px;"> > </span> > >> <span style="font-size: 16px;"> d</span> > >> <span style="font-family: HelveticaNeue, Helvetica, Arial, > >> sans-serif;">▪¤▪¤▪¤▪¤</span><p dir="ltr"> > >> ¤▪¤▪¤▪¤▪ > >> > >> ▪¤▪¤▪¤▪¤ > >> > >> ¤▪¤▪¤▪¤▪ > >> > >> ▪¤▪¤▪¤▪¤ > >> > >> ¤▪¤▪¤▪¤▪ > >> > >> ▪¤▪¤▪¤▪¤ > >> > >> ¤▪¤▪¤▪¤▪ > >> > >> $d > >> > >> 8 8 > >> > >> > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
