We usually talk about putting splits NS and EW. Sometimes a diagonal is better. For example, tonight I started a fire with some large splits on the bottom. They were too long for NS, but fit quite nicely SE. The important thing is to have some space between them for a good draft. Placed some medium sized splits EW, a super cedar on the middle lowest split, and some kindling on top. Off to the races. The next batch of wood also fit better NE and then crosswise SW rather than the usual directions. Be flexible. Have fun!