private static IEnumerable<Trade> GetValidTrades(Game g, Player p)
{
foreach (var rule in g.GetTradeRules(p.Id))
{
var tr = CheckOnPlayersCells(g, rule, p.Id);
if (tr == null && !p.OneDirection)
{
tr = CheckOnPlayersCells(g, ReverseRule(rule), p.Id);
if (tr != null) tr.Reversed = true;
}
if (tr != null)
{
yield return tr;
}
}
}
