Help needed (ashamed...but this is from the start!!)
- I deduce from 14a and 30d that H, N, S and E produce at most 2 digit cubes, ie all are from {1,2,3,4}.
- 13a tells me that I produces, at most a 4 digit fourth power, ie is {1,2}
So five letters from 4 digits is not possible.....what am I missing?