OFFSET
1,2
EXAMPLE
Some solutions for 4X4
..0..1..0..4....0..1..2..1....0..1..2..1....0..1..3..4....0..1..2..1
..1..2..3..5....1..2..3..4....1..2..1..0....1..2..4..6....1..2..3..4
..0..3..4..2....2..3..2..1....2..1..3..4....3..4..5..7....2..3..2..5
..4..5..2..3....1..4..1..0....1..0..4..5....4..6..7..3....1..4..5..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 20 2011
STATUS
approved