03 Nov '07 07:51>
Minimum number of Knight moves?
Originally posted by PeakiteCorrect. Good spot on the Nc7+ issue.
And conveniently I can make the basic N moves which don't block the position whilst black takes back the final three N moves.
[fen]r1bqkbnr/pppppppp/8/8/N7/1P5N/1PPPPPPP/R1BQKB1R w KQkq[/fen]
From here white uncaptures to leave a black N on b3, three moves back for each side.
This can be reached as the black c or a pawn can be left on the fourth rank ...[text shortened]... r from b2 to a8 but these both take the same number of moves.
My answer is twenty, not 18.