IN the phace of taking checkers out of the board sometimes the game do not accept possible exits. For instance I have now a game that there is a die of six and four, square six is empty, square five had two checkers, the first tchecker was properly moved from square five to square one (the four) but then the last checker cannot be removed from the square five. , and as I see, it should be possible to exit the checker from the square five in that case by the second die's six.

Hello,

IN the situation you describe: 6 and 4 on the dice, and two checkers on square 5, what you observe is perfectly normal.

You can take the first checker out by using the die 6. You can't take the second checker out because 4 is less than 5. You must move that second checker to square 1 instead.
When using the die 6 to take out a checker on square 5, the remaining die point is lost. By the way, you can do so only if there is no checker on square 6 or further.