TY  - BOOK
AU  - Watkins, John J
TI  - Across the Board: The Mathematics of Chessboard Problems
SN  - 9788173715419
U1  - 793.74 
PY  - 2005///
CY  - Hyderabad
PB  - Universities Press
KW  - Chess
KW  - Mathematical Recreations
ER  -