Mahjong Defense: How to Stop Handing Your Opponents the Win

Most of us learn mahjong on offense. We pick a hand, chase it, and hope the right tiles show up. But the players who win the most over time are usually the ones who also know when to stop chasing and start protecting.

In American mahjong, the player who throws the winning tile pays double. That makes defense worth learning. Here's how to do it without giving up on your own hand too early.

Read the exposures on every rack

Exposures are the best clue you'll get all game. Every time someone calls a discard and puts a group face up, she's telling you something about her hand.

• Look for the pattern. Two exposures in the same suit, or a run of like numbers, often narrow her down to one or two hands on the card.
• Count what's left. If she's exposed a pung of 3 craks and a kong of 6 craks, think about which 369 hands she could be building, and which tiles she still needs.
• Check her concealed tiles. The fewer tiles left on her rack, the closer she is.

Know what a hot tile is

A hot tile is one that's likely to give someone mahjong. Early in the game, almost nothing is hot. Late in the game, especially once a player has three or more exposures, a lot of tiles get hot very quickly.

Before you discard, ask yourself two questions:

1. Does this tile match anyone's exposures or likely hand?
2. Has it been discarded already? A tile that's been thrown and not called is usually safer.

We go deeper on reading one player in particular in What Your Across Opponent Is Really Telling You.

Keep a few safe tiles

Experienced players often hold on to one or two tiles they know are safe to discard, like a tile that's already been thrown three times. If the table gets tense, they can throw a safe tile instead of breaking up their hand or gambling on a hot one.

Watch the jokers

Jokers in exposures matter two ways. If you have the real tile a joker is standing in for, you can swap it out on your turn and use that joker yourself. And if nobody is swapping out a joker that's been sitting there a while, that tells you the real tiles might already be gone, or are being held.

Know when to switch or shut down

Sometimes the best defense is admitting your hand isn't happening. If you're still several tiles away late in the game and another player is clearly one tile from mahjong, you have two choices:

• Switch hands. If your tiles can pivot to a different hand that uses safer tiles, do it.
• Play fully defensive. Stop chasing and only throw tiles you're confident won't win it for someone else.

It isn't the most exciting way to play, but saving the double payment adds up fast. See How Scoring Works in American Mahjong for the math.

Defense starts with your discards

Every discard gives the table information about your hand, too. The habits that make you a safer discarder also make you harder to read. If discards are the part of the game you'd most like to improve, read Why You Keep Discarding the Wrong Tile and Should You Call Mahjong Before You're Sure?

Reading the table gets easier with every game you see. Bird Bam lets you practice hands and get coaching on your decisions, so you can build these instincts before your next real game.

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