I saw an afghan made with 12 of these squares today and was on a mission to find the pattern. I found it HERE, with help from my Crochetville friends, and made my first one today while watching the NASCAR race. Mine measures 13 1/2 inches. I placed a quarter next to it so you could see how huge the square is. The only way I could get the cabled hearts to show up was to not use the flash on my camera. That's why it's so dark. The hearts look a little wonky in the picture, but they're really not. I promise! There are lots of other wonderful square patterns on Chris Simon's site.
I worked nearly all day yesterday on the Victory Junction Gang Camp afghan. I wanted to make the last few rounds look like black on white tire treads (or zig-zag) using a pattern from one of my pattern books. It took me two hours to figure the pattern out! Grrr. Turns out I was doing it right all along, but you can't tell that until you get 3-4 rounds done. By the time I figured it out, I was over it and wanted something new to work on today. This one was fun to do.