The draughts-player's guide and companion : a guide to the student, and a companion for the advanced player (1890)
Dunne, Frank · Warrington : F. Dunne · leaf 41
there are other pieces upon the board, to knowwhich square it will come out on. It will be noticed that theonly two squares by which it can leave are in different systems.Discarding all but the three pieces concerned in the calculation,it is evident that there must always be an odd number in… … WHITE. White to move. By applying the rule in the above example, we find that thereis an odd piece in the Second System on square 4. Blackwill therefore be driven out via squares 9 or 27 (in the same systemas 4), accordingly as to which double corner he retreats to.The following example shows the…
Checkers
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