function yes = tryPiece(piece)

global n
global p
global newCount

[l, w] = size(piece);
if l > w
    piece = piece';
    [l, w] = size(piece);
end

i = newCount;
while i >= 1 
    np = p{n}{i};
    if [l w] == size(np)
        if matchPieces(piece, np, l, w);
            yes = 0;
            return
        end
    end
    i = i - 1;
end

newCount = newCount + 1;
p{n}{newCount} = piece;
yes = 1;
return