Open Hand

A mahjong hand that includes one or more exposures, where melds are visible to other players. Most hands on the NMJL card can be played as open hands.

Definition and Core Concept

An open hand has at least one exposure showing. When you call a tile to finish a Pung, Kong, or Quint, it gets exposed on the table for everyone to see. Your hidden tiles stay on your rack.

One exposed meld. That's all you need for an open hand. Pretty straightforward. It's different from concealed hands, where everything stays hidden until you win. Most hands on the NMJL card are open, not concealed. The difference matters for both strategy and hand selection.

Advantages of Open Hands

There's real power in open hands. You get flexibility to call from discards. Say you're building a pung, kong, or quint. Someone throws a tile you need. You claim it, expose the group, and keep moving toward Mah Jongg. Faster progress. That's the advantage.

The card is loaded with open hands. You've got tons of patterns and point options. Stick to concealed? You're leaving some of the best hands on the board. And here's the thing: you can grab discards from any player, not just hope the wall throws you what you need. That's way more control.

Disadvantages of Open Hands

But here's the catch: exposures give you away. When your melds are showing, opponents know exactly what you've got. They can guess your hand. Are you going for something simple or chasing a tough pattern? Experienced players figure it out.

Exposed jokers are risky too. Opponents can swap a natural tile for your joker. So you'll think twice before exposing melds with jokers. And once you expose anything, you're stuck. No concealed hands for the rest of that game. That's the tradeoff.

Open vs. Concealed on the NMJL Card

The NMJL card tells you which is which. See a "C"? That's concealed. You must complete it from the wall only. Usually worth more points because, well, it's harder. Most hands on the card don't have a "C". Those are open, and you can call from discards.

Lots of patterns are open. Pungs. Kongs. Meld combos. When there's no "C" marking it, you're allowed to expose and call. Knowing the difference is key from the start of each round. It shapes everything you do.

Strategic Considerations

So which do you chase, open or concealed? Look at your tiles. Got strong natural groups that need just one or two more tiles? Maybe concealed works. Hand falling apart and needs lots of help? Go open.

Table dynamics matter too. Are players throwing you tiles you want? Open's your play. Position helps. Early turn order means more chances to snag discards. Smart players keep both options alive early on, then decide as the game unfolds during and after the Charleston. See how the tiles flow, then commit.