Solution Riddle 4

SOLUTION RIDDLE 4:

The puzzles are excellent tools to develop and enhance our ability to combine and coordinate multiple intellectual faculties. This conundrum is a great example of this. 

First we think of what he saw and how he reasoned the gentleman who was at the end of the row and could see the hats of the other two gentlemen. Since he failed the color of his hat deduce that could not infer what color his hat, then hats of the other two gentlemen could not both be white, since otherwise the color of your hat would necessarily black (remember initially had two white and three black hats). This information is immediately deduced that the hats of the first two knights or were: i) both black or ii) one the other black and white. Despite having this information and to see the color of the hat first gentleman, the second knight also could not figure out which was the color of his hat, so this rules out the possibility that the hat first gentleman is white, because of the Conversely, the second gentleman had deduced that his black hat should be according to the option ii). Then the first gentleman hat was  black.