Convention

Minorwood

A minor-suit key-card ask where four of the agreed minor replaces 4NT, preserving space for minor-suit slams.

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Also known as: Minorwood Blackwood, Minor-suit key card, RKC Minorwood

Practice on Cuebids

Practice slam hands where the partnership has to agree a strain, count key cards, and decide whether five, six, or seven is safe.

Practice minor-suit slam auctions on Cuebids

Categories

Slam BiddingMinor SuitsKey Card Asking

Systems

Standard AmericanTwo Over One Game ForceAcol

Last updated

2026-07-31

What is Minorwood?

Minorwood is a key-card asking method for minor-suit slams. When clubs or diamonds are agreed as trumps, four of that minor can replace 4NT as the key-card ask.

The reason is practical. If clubs are trumps and the partnership asks with 4NT, the response may push the auction past 5 even when two key cards are missing. Asking with 4 leaves far more room.

Four clubs as key-card ask

W
N
E
S
1
P
2
P
4
  • If clubs have been agreed and the partnership plays Minorwood here, 4 asks for key cards.
  • This is not a natural signoff unless the partnership has excluded this auction from Minorwood.

Four diamonds as key-card ask

W
N
E
S
1
P
2
P
4
  • If diamonds are agreed, 4 can be the diamond key-card ask.
  • The lower ask can make stopping in 5 easier than after 4NT.

Response structures

Minorwood responses usually mirror Roman Key Card Blackwood logic, but the steps start above four of the agreed minor. Partnerships can use 1430, 3014, or another key-card scale.

Playing 1430 over a 4 ask, for example, 4 shows one or four key cards, 4 shows zero or three, 4NT shows two without the queen of diamonds, and 5 shows two with it. Over a 4 ask the same steps begin at 4.

The response structure matters less than clarity. In RKC Minorwood, the five key cards are the four aces and the king of the agreed minor. Both players must know how the trump queen is shown and which bids ask for side-suit kings or specific controls afterward.

After the response, five of the agreed minor is the normal signoff, and the cheapest bid outside the trump suit is usually the queen ask. King asks vary: many pairs use the step just above five of the agreed minor, while others keep 5NT for that job.

  • Agree whether the partnership uses 1430 or 3014 steps.
  • Agree how to ask for the trump queen.
  • Agree whether the next available bid is always queen ask or can be signoff.
  • Agree what 4NT means after Minorwood has been used.
  • Agree which bid asks for side-suit kings.

Stopping safely in five

W
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S
1
P
2
P
4
P
4NT
P
5
  • Playing 1430, the 4NT response shows two key cards without the queen of diamonds.
  • If asker holds one key card, this response shows that the partnership is missing two, so asker signs off in 5. Over a 4NT ask the same answer would have been 5, already past the safe spot.

When Minorwood is on

Minorwood is powerful only when the minor suit is clearly agreed. A jump to four of a minor can also be natural, preemptive, invitational, or a control bid in some auctions. Ambiguity is the main danger.

Many partnerships require a game-forcing auction and clear minor agreement before Minorwood applies. Others use it in more auctions but write down explicit exceptions. Many pairs also turn Minorwood off in competitive auctions, where a jump to four of a minor is better used as a natural or preemptive action.

Clear agreement first

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S
1
P
2
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3
P
4
  • Repeated diamond support makes diamond agreement clear.
  • If Minorwood is on, 4 asks rather than invites.

Hand examples

Minorwood is for hands where minor-suit slam is plausible and the partnership needs key-card information before committing above game.

Good Minorwood hand

A4
K7
AQJ964
KQ2
  • After partner supports diamonds strongly, key-card information may decide whether 6 is safe.
  • A 4 Minorwood ask leaves more room than 4NT.

Weak hand that needs a natural 4

84
72
KQJ986
762
  • This hand may want to compete or sign off in diamonds.
  • If partner could mistake 4 for Minorwood, the partnership needs tighter rules.

Minorwood versus 4NT

4NT is simple and familiar, but it is often too high for minor-suit slam exploration. Minorwood gives the partnership space to learn key cards and still stop at five of the minor. When the response stays low enough, even 4NT can remain available as a resting spot.

Minorwood is not the only fix. Some pairs prefer Kickback, sometimes called Redwood for the minors, where the suit directly above trumps (4 for clubs, 4 for diamonds) is the key-card ask and four of the minor stays natural.

The cost is memory. Both players must know when four of the minor is natural and when it is artificial. If that boundary is vague, Minorwood can create exactly the expensive accidents it was meant to avoid.

Common mistakes

  • Using Minorwood before the minor suit is clearly agreed.
  • Forgetting whether 1430 or 3014 responses are being used.
  • Treating a natural four-minor signoff as a key-card ask.
  • Failing to define whether 4NT after Minorwood is signoff, queen ask, or something else.

FAQ

What does 4 mean in Minorwood?

When clubs are agreed as trumps and Minorwood applies, 4 asks for key cards for a club contract.

Why use Minorwood instead of Blackwood?

Minorwood starts lower than 4NT, which gives the partnership more room to stop in five of the minor when slam is unsafe.

Is Minorwood beginner-friendly?

Not usually. It is useful, but only for partnerships willing to define exactly when four of the minor is artificial.

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