hi
Here’s my solution to challenge 24.
I coincidentally solved this in previous challenge 23 Solutions to "Just KNIME It!" Challenge 23 - #10 by martinmunch
So compensate for time saved, I played briefly with feature engineering and normalization. (potentially a topic for future challenges?). I managed to get accuracy 95.80% Unfortunately I forgot to save and only have a screenshot to show for it 
I used a “simple” SMOTE node with fixed seeding (so that results can be recreated) and scored 95.65% in accuracy, close but no cigar 
cheers!