Thanks NotEnoughHeat for your feedback. For the 33 vs 2, he does mention that the 6 card Charlie would be the same as a 7 card Charlie. I agree that not doubling A2 and A3 vs 5 or 6, A4 vs 4 or 5, A5 vs 4) is a concern, but is it correct (?), especially when it’s not reflected in his Blackjack Playtech Surrender review?

If anyone has a copy of Wong’s «Basic Strategy», the Wizard does mention that this would be the reference to follow on Charlie. Unfortunately, I only have Wong’s «Professional Blackjack», although this first book may be a «gift to self» for Christmas.