ref: 3a3e491a8bc624eb1c3b34e54ebee8d33942add2
dir: /html/unequal.html/
Unequal <p> Fill in the grid with numbers from 1 to the grid size, so that every number appears exactly once in each row and column, and so that all the <code><</code> signs represent true inequalities (i.e. the number at the pointed end is smaller than the number at the open end). <p> To place a number, click in a square to select it, then type the number on the keyboard. To erase a number, click to select a square and then press Backspace. <p> Right-click in a square and then type a number to add or remove the number as a pencil mark, indicating numbers that you think <em>might</em> go in that square.