Ahhahahahah … good work! Well spotted!!!!

Still not right though is it … as you say, even with decimals there are 100 combinations, but only 81 calculated and displayed, I still say there is a glitch in the Optimiser algorithm (for decimals only?)?

Ill ponder on that a bit more later, just came in for lunch from from fixing a new boundary fence … retirement is good, I should have done it sooner! 🙂

Edit / PS

But where are you sourcing the 100 combos shown in your excel?