let compatible_v_option pieceB pieceH =
myprint myverb "Appel a la relation de compatibilite verticale.";
match (pieceB, pieceH) with
| Some x, Some y ->
myprint myverb "\tLes deux cases sont des 'Some'.";
x.h = y.b;
| _, _ ->
myprint myverb "\tUne des deux cases est un 'None'.";
true