Nasty nasty puzzle

The 8 queen problem presented nicely in Flash. For the mathematicians out there one solution is "Where 0 < = i < 4, j = (3 + 2i) mod 8 and where 4 <= i < 8, j = (6 + 2i) mod 8". Apparently there are 11 other solutions. As my maths teacher used to say - "I'll leave that as an exercise"