OFFSET
1,1
EXAMPLE
Some solutions for 4X4
..4..1..4..1....3..0..1..0....3..0..3..4....2..0..4..3....0..1..0..2
..1..4..4..3....0..1..4..1....0..3..0..3....0..2..3..0....1..0..2..3
..4..4..4..1....1..4..4..3....3..0..1..2....4..3..0..3....0..2..0..2
..1..3..1..1....0..1..3..0....4..3..2..3....3..0..3..4....2..3..2..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 18 2011
STATUS
approved