000
000  //top layer of 3x3 cube
000

000
000  //middle layer of 3x3x3 cube
000

000
111  //bottom layer of 3x3x3 cube
100

int[][][] piece = new int[3][3][3];
// structure - [top = 0, middle = 1, bottom = 2][z][x]
// z = column, x = row
// z,x because in my 3D renderer, -z = forward, x = right/ left, y = up/down

000
001
000

000
001
000

000
001
001