This is the skill you can confirm the Monty Hall Problem by playing the game by yourself. On this skill, you are playing the card game in stead of opening the door. Three cards are on the table with face down. There is one winner card in the three, but nobody knows except for the skill. First you pick one card. Then skill opens one loser card from other two cards. At this moment, there are two cards left face down. One is your selection card and the other is just untouched card. You may change the selection of the card or keep it as it is.
You may win, you may lose on each game. But results of the game are recorded by the skill and winning rate of the decision is calculated.
You can hear the result of the games anytime by saying "Result". You will see which is better result on Change or NoChange.