XceL Checkerboard Puzzle No. 1
Doyle Puzzle Co., Buffalo, NY, circa 1920?
(cardboard box 5.1"x5.1"x7/8", and 14 distinct cardboard pieces with 3/4" squares;
same as the
Famous and Baffling Checkerboard Puzzle
with colors reversed;
also made in a 13 piece version,
New XceL Checkerboard Puzzle No. 2;
shown on pages 183-187 of the
which lists this puzzle as having 84 solutions, one of which is shown below)
shown on page 97 of the
1893 Hoffmann Book
is the same as a mirror image of this puzzle,
except that puzzle shows only 63 squares,
and can be corrected to make one of the three 4-unit L's be a 5-unit Z.