Minor suit structure
Chapter 07 · Minor suit structure

UMJOOMO (refined 5♠ 4-5♥)

Playing this with Radu with 3rd Suit GF after 1m-1x-2m

(need a bid with KJxxx Axxxx xx x, partner could have x KQxx xx AQxxxx – here 1♣-2♥-2NT-3♠-4♥)

Note: March 2025, Also on after 1m-(X)

After minor opening with 5♠ and 4-5♥, by UPH, PH or after opponent’s takeout double.

  • 2♥ < Invitational, any HCP if non-vulnerable or 55
  • 2♠ = Invitational, (note: very rare by PH, so must be 5+ 5+, 9HCP if only 55)
  • Not doing this and bidding spades then hearts is GF

Opener rebids:

  • To Play: P, 2♠ over 2♥, 3NT, 4♥♠, 5♦
  • Ace Ask: 4NT ace ask not RKC, 5♣=04, 5♦=1, etc
  • Natural Minor: 3♣/♦, natural NF
  • Invitational: 3M invites
  • Asking 2NT (asks responder range and if 55):
  • 3♣-min 54,
  • 3♦-min 55,
  • 3♥ non-min 54,
  • 3♠ non-min 55,
  • 3NT natural.

Revised August 2026: 64 or 54 (instead of 55 54), so 4♥ and 5 or 6 spades.

  • (Solves the problem after 1m-2♥ of 3♥ and 2♠, always better to go back to spades)
  • So 1m-1♠-1NT:
  • 2♣ normal relay
  • 2♦ any GF
  • 2♥ 55 NF (can’t be 4 hearts bc above)
  • 2♠ long spades NF (can’t have 4 hearts)
  • 1♦-1♠-2♣:
  • 2♥ still 4SF, so could still have 4♥
  • (Losing showing 55 <GF here, if partner 1354 worse off possibly)
  • Also: 1♣-1♠-2♣: 2♥ is 55 NF, use 2♦ for GF