Thanks sadia. I have noticed that after I finish a 4x5 challenge level, Niki has set another record for that puzzle. I did one an hour or so and I was pleased with my quick time of 22 minutes and saw niki did it in 4 mins or thereabouts. I cannot read the clues and make the x's on the initial pass in that short time. I think to myself the record holders for the puzzle have it finished completely by that time.