How to Defend Against a Loner in Euchre

To stop a loner you need just one trick: it turns 4 points into 1. Lead an off-suit Ace if you have the opening lead, never lead trump, play your lowest trump under the loner's big ones so your best survives, and make sure you and your partner hold different suits when the last trick arrives.

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Rule of thumb

Aces first, trump never, two defenders keep two suits. Most loners are lost or saved on the first lead and on the last discard. Get those two moments right and the middle of the hand looks after itself.

Set the right target: one trick

A lone player who takes all five tricks scores 4. Three or four tricks alone is worth only 1, the same as an ordinary make, and a euchre gives your side 2. CardCouch scores it exactly that way, and only the maker may go alone, so you always defend with your partner beside you: two hands against one.

Someone who went alone usually holds most of the top trumps, so a euchre is rare. Do not play for it. Play for the single trick that is worth 3 points to your side, and take a second one only if it falls into your lap. The going-alone guide shows the hands you are up against: typically three or four big trumps and one or two side cards. Those side cards are where your trick is.

What to lead against a loner

The player to the dealer's left leads, or the next player round if that seat is the partner sitting out. When the lead is yours:

  • Lead an off-suit Ace. It wins unless the loner is void in the suit. If it holds, the 4 points are gone before the loner has played a trump, and you have no guess to make at the end of the hand.
  • With two Aces, lead the one from your shorter suit and keep the other. The fewer cards you hold in a suit, the more likely the loner has one. The second Ace is your card for the last trick.
  • With no Ace, lead high, not low. In ordinary defense a low card from a short suit gives your partner a chance. Against a loner, a low lead lets a Queen or 10 in the lone hand win cheaply. Lead the top of your best off-suit, a King for choice: it forces the loner to produce the Ace or spend a trump.
  • Do not lead trump unless you hold nothing else. Drawing trump is the loner's job, and it strips your partner of the one card that might ruff a side suit.

On CardCouch's Hard level your computer partner follows the same logic when it has the lead: an off-suit Ace if it has one, and no trump lead while it holds any other card.

Save your best trump

When the loner leads trump you must follow, but you choose which trump. Always follow with your lowest. A left bower with one small trump beside it is a certain trick: the small one goes under the right bower, and the left wins the next trump lead. A trump Ace with a small guard works the same way whenever the loner is missing the left.

If the loner leads an off-suit card and you are void, ruff it. Any trump wins the trick when you play after the loner. And never take a trick your partner is already winning: if North's Ace is good, throw a useless card under it and keep your own stopper.

The last tricks: keep different suits

A typical loner runs three or four trumps and then plays a side card. While the trumps are running you have to discard, and this is where most stoppable loners get through. By the fifth trick each defender holds a single card. Two defenders can cover two suits, but only if they do not both keep the same one.

  • Throw dead cards first: small trumps that cannot win, and any suit the loner has already trumped, because the loner has none of it left to lead.
  • Keep your highest card, not your longest suit. An Ace is the obvious keeper, then a King. On the last trick only one card per suit matters, and a second low card in the same suit beats nothing.
  • Read your partner's discards. A suit your partner throws away is a suit your partner is not guarding, so it becomes yours. If North sheds diamonds, hold your diamond and let your heart go. If North clings to a suit, release it.
  • Doubling up on a suit is the classic mistake. Both defenders arrive at trick five with a spade, the loner leads the 10♦, and nobody can beat it.
  • One exception: a guarded King. If the loner has shown only three trumps, the hand has two side cards and they may be the same suit. A King with a small card beside it survives the Ace and wins the next round; a bare King does not. Earlier in the hand, keep the guard if you can afford to.

Worked examples

Example 1: The opening Ace

East deals, picks up a heart and goes alone, so West sits out and you lead. You hold A♠, K♦, 10♦, 9♣, 9♥.

Lead the A♠ at once. If East follows suit, the march is dead on trick one and the hand is worth 1 point instead of 4; continue with the K♦ and see whether a second trick is on offer. If East ruffs the Ace instead, follow the trump leads with your 9♥, throw the 9♣ next, and hang on to the K♦ with its guard in case diamonds are East's side suit.

Example 2: The guarded left bower

You dealt. West orders up the 9♠ and goes alone, so East sits out and West leads. After your discard you hold J♣, 9♠, A♦, Q♦, 10♥.

West leads the J♠. Play the 9♠, not the J♣: the left bower would simply lose to the right. When West continues with another spade, your J♣ is now the highest trump left and takes the trick. The loner is stopped. Then lead the A♦ and see whether a euchre is on after all.

Example 3: The last discard

East is alone in clubs and has won three tricks with trumps. East leads a fourth club. You are down to the K♥ and the K♦ and must throw one. Earlier, North discarded the 9♦ and then the 10♦.

North's discards suggest diamonds are not being guarded on that side of the table, so North's last card is probably a heart or a spade. Keep the K♦ and let the K♥ go. If East's last card is a diamond below the King, you win trick five; if it is a heart or a spade, that is North's job. It is an inference, not a certainty, but it beats guessing: had you both kept hearts, a lone Q♦ would have walked home for 4. A computer partner is not signalling on purpose, yet its discards still show you which suits are leaving its hand.

Frequently asked questions

How do you stop a loner in Euchre?

Win one trick. A lone hand scores 4 points only for all five tricks, so a single defensive trick cuts it to 1 point. Lead an off-suit Ace if you have the opening lead, never lead trump, follow trump leads with your lowest trump so your best one survives, and make sure you and your partner keep different suits for the last trick.

What should you lead against a loner?

An off-suit Ace if you have one; with two Aces, lead the one from your shorter suit. With no Ace, lead the highest card of your best off-suit, such as a King, rather than a low card: there is only one opponent to beat, and a low lead can hand a cheap trick to the loner's weak side card. Do not lead trump.

Which cards should you keep when defending a loner?

Keep your highest card in a suit the loner might still hold, and keep a different suit from your partner. Throw away low trumps that cannot win, cards in a suit the loner has already trumped, and the suit your partner is clearly keeping. If your partner discards a suit, that suit is yours to guard.

How many points do you get for euchring a loner?

Two points in standard rules and on CardCouch, the same as any other euchre. Some house rules pay more. Either way the realistic goal is one trick, which already saves your side 3 points.

Should you lead trump against a lone hand?

No, unless trump is all you hold. The lone player wants trump drawn so that their side cards cannot be ruffed, and leading it does that work for them. Keep your trumps to ruff an off-suit lead or to win once the loner's higher trumps have been played.

Next loner, take one trick.

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