How to store multiple values at an index in a Stack?

I'm trying to upadte my validity checker for my Sudoku solver, but I'm not really sure how to use Stacks in the way that I want. I already know how the basics when it comes to Stacks, but I'm trying to store multiple values at one index.

My Sudoku board is stored in a 3D array, so in my stack I need to store the value, sub-square where the value was found, row it was found in and column it was found in.

So suppose that my array was this:

 int[][][] solved = {{{5,3,4},{6,7,2},{1,9,8}}, //Let's say I want to check if 5 is in the right position.
                    {{6,7,8},{1,9,5},{3,4,2}},
                    {{9,1,2},{3,4,8},{5,6,7}},
                    {{8,5,9},{4,2,6},{7,1,3}},
                    {{7,6,1},{8,5,3},{9,2,4}},
                    {{4,2,3},{7,9,1},{8,5,6}},
                    {{9,6,1},{2,8,7},{3,4,5}},
                    {{5,3,7},{4,1,9},{2,8,6}},
                    {{2,8,4},{6,3,5},{1,7,9}}};  

The information would be [5,0,0,0].

I already have a working checker but now I need to know how to store multiple values at a single index in a Stack. This way if it is in the wrong position, I can just pop it off and try a different number.

Any insight will be appreciated!

Create an object that encapsulates the group of values. The class should mark the fields private and provide getters and setters, but I've left it out for brevity. I also don't know the types for the data, I'm assuming int.

public class Move 
{
    public int value;
    public int row;
    public int subSquare;
}

Then you will have Stack<Move>

Then you can add Moves to the stack:

Stack<Move> stack = ...
Move move = new Move();
move.value = 1;
move.row = 2;
move.subSquare = 3;
stack.push(move);