The difficulty is that not all cards are face up in the columns. The user can see only one top card in each column, the rest of the cards are hidden. Each time when the top card is removed, only one card turns face-up. Cards can be moved between columns or sent in a specific order to the Foundation. Cards can be moved between columns in a non-random order. A lower-ranking card must be placed on top of a higher-ranking card in order: a three onto a four, a queen onto a king, and so on. The red suit must be placed on top of the black suit and vice versa. An attempt to put a red suit on top of a red one or a two on top of a six won't lead to anything; the cards will return to their places. You can return the cards you need from the Foundation to the Columns.
To change the card dealing option (one or three), you must once again click the left mouse button on the card back in the Stock pile. At some point it will turn out that the user is shown all the cards available in the Stock pile. Then the next time he clicks the mouse, he will see the card back again. Another click will reopen the Stock. And the online solitaire will again deal the cards by 1 or 3, depending on the option selected by the user. The cards will be arranged in the same order as they were displayed before.
If there are already face-up queens of a particular suit in the columns, and there is an empty column to move, then you should be careful with the suit of the king to be removed from the deck. Its suit must be suitable for the suit of the queens in the columns, otherwise it will be difficult to win.