LEWIS CARROLL’S SHORT CUT
Here is a very smart and very simple method of dividing any multiple of 9 by 9, from the fertile brain of Lewis Carroll:—Place a cypher over the final figure, subtract the final figure from this, place the result above in the tens place, subtract the original tens figure from this, and so on to the end. Then the top line, excluding the intruded cypher, gives the result desired. Thus:—
36459 ÷ 9 = 4051,0 36459 = 4051.
No. XLIX.—CHESS CAMEO
By A. Bayersdorfer
BLACK
WHITE
White to play, and mate in three moves.