Having reached the conclusion there is no game, you must decide whether partner can be trusted with a one-no-trump contract. In these columns the chivalrous attitude is always favored. Partner's known maximum is 10 points, which, with your 15, cannot add up to 26.
6 HEARTS—5 PTS.
4 NO TRUMP—4 PTS.
6 NO TRUMP—1 PT.
You have better than an opening bid, and partner has opened, reversed (bid a higher-ranking suit above the one level) and jumped. This spells a slam, which you should bid forthwith. The prescribed call is six hearts, where your doubleton spade may add a ruffing trick.
1 NO TRUMP—5 PTS.
A spade contract does not appear to be propitious. A rescue bid of one no trump suggests that partner rescue himself in either diamonds, or clubs, since obviously you are short in spades and have the other three suits.
2 SPADES—2 PTS.
3 CLUBS—1 PT.
This hand has merit, but no immediate action can be taken with safety. If you mention either of your suits, partner may be cornered into bidding three hearts—placing you in an awkward position. When a free bid projects the bidding to the three level, it should be backed up by a holding equal to an opening bid.