Move the items in the table (using the mouse, the arrow keys or your finger) to minimize the number of changeovers. A changeover is a pattern characterized by two different items that appear consecutively in the same column (possibly with empty entries in between). A level is solved once the current number of changeovers ('Current') is brought down to the minimum number ('Goal'). In some levels certain changeovers cost more than +1. Items can always be moved within the rows, and in some levels the row order can be modified as well. Hitting 'Solve' shows one optimal solution (there may be several different ones). Hitting 'Shuffle' permutes the table randomly.