October 1888
From
the whimsical works of the honorable Edward Lear. Taken from the easy to read,
fun to peruse and utterly ludicrous: Book of Nonsense.There was a Young Lady whose chin,
Resembled the point of a pin:
So she had it made sharp,
And purchased a harp,
And played several tunes with her chin.
To the great-grandchildren, grand-nephews, and grand-nieces of Edward, 13th Earl of Derby, This book of drawings and Verses (The greater part of which were originally made and composed for their parents,) is dedicated by the author, Edward Lear (Source: Gutenberg)
May 1887
From
the whimsical works of the honorable Edward Lear. Taken from the easy to read,
fun to peruse and utterly ludicrous: Book of Nonsense.There was an Old Man with a beard,
Who said, "It is just as I feared!--
Two Owls and a Hen,
Four Larks and a Wren,
Have all built their nests in my beard!"
To the great-grandchildren, grand-nephews, and grand-nieces of
Edward, 13th Earl of Derby, This book of drawings and Verses (The greater part
of which were originally made and composed for their parents,) is dedicated by
the author, Edward Lear (Source: Gutenberg)
December 1886
The name Sudoku is the Japanese abbreviation of a longer phrase meaning "the digits must remain single"; it is a trademark of puzzle publisher Nikoli Co. Ltd in Japan. Other Japanese publishers refer to the puzzle as Nanpure (Number Place), which was its original title. In Japanese, the word is pronounced [s??dok?]; in English, it is usually spoken with an Anglicised pronunciation (suh-DOE-coo or SOO-doe-coo).
The numerals in Sudoku puzzles are used for convenience; arithmetic relationships between numerals are absolutely irrelevant. Any set of distinct symbols will do; letters, shapes, or colours may be used without altering the rules (Penny Press' Scramblets and Knight Features Syndicate's Sudoku Word both use letters).
The attraction of the puzzle is that the completion rules are simple, yet the line of reasoning required to reach the completion may be difficult. Sudoku is recommended by some teachers as an exercise in logical reasoning. The level of difficulty of the puzzles can be selected to suit the audience.
