NO PENALTY FOR DISCARDING TO A SURE-WIN (Article 203)

Commentary: When an opponent has exposures that indicate a likely hand, other players may be able to identify tiles that could help complete it. What they do with that information is a matter of strategy. Each player has agency over their own discards, and not everyone chooses to play defensively.

For anyone who is playing to win, however, the timing of a risky discard matters. A tile that appears dangerous because fewer than three matching tiles are visible may become increasingly risky as the hand progresses. A tile with no matching tiles visible presents even greater uncertainty because all of the remaining matching tiles may still be available to an opponent.

Discarding a risky tile earlier does not guarantee that it will be safe. The opponent may be able to call it for exposure or even declare mahjong. Earlier in the hand, the opponent may not yet have developed their hand enough to use it.

Holding that same tile gives the opponent additional opportunities to develop their hand through keepers from the wall and calls for exposures. By the time the risky tile is discarded later, an opponent who could not act on it earlier may now be ready to use it.

A risky tile does not necessarily become safer by holding it. Sometimes, simply holding it gives your opponent more time to get ready for it.

Defensive Play and Sure-Win Situations

Some groups play more competitively than others and may adopt house rules designed to encourage defensive play. One example is a sure-win penalty, in which the player who discards the winning tile may be required to pay for the table and/or pay an additional amount from their own purse.

Groups may apply this house rule when:

• A player declares mah jongg after already having three exposures.
• A player declares mah jongg after having one or two exposures that indicate a particular hand.
• A player declares mah jongg and three matching copies of the winning tile were not already accounted for among exposures or discards.

These are house-rule penalties, not League penalties.

The League recommends breaking up your own hand when necessary to block another player from winning in these situations. However, a player is not required to play defensively, and there is no League-established change to the payout when someone discards a winning tile under these circumstances.

Defensive play is a strategic choice, and a sure-win penalty is a house rule.

NOTICE:
When a group chooses to play with house rules, its members are responsible for establishing the specific logistics, rules, and penalties that apply. Because these can vary widely from one group to another, players should always ask about the group culture before joining a game for the first time.

Question from a Player: I discarded a tile and another player with three exposures declared mah jongg. They said I had to pay for the table. Is that a rule?

Answer from the NMJL:  We suggest that a player not throw a tile that is obviously needed by another player. Defensive play is recommended.

Source:  Mah Jongg Made Easy page (2024 page 30)

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Other answers from the NMJL:

“There is no set rule for “dogging”.  Discretion on the part of the player must be used.  Discards and exposures must be taken into consideration.  Also, the shorter the wall, the more reason for careful “dogging”.  A player discards only tiles that are obviously not needed by any player.  Very often a player will break up their own hand in order to discard safe tiles.  It is important to remember while trying to complete your hand that it is just as important to prevent the other players from completing their hands.”  

 “Most of the skill in playing Mah Jongg depends upon the ability to play a good defensive game.  If a hand does not improve rapidly during the play and a large portion of the wall is exhausted, a player should break up their own hand and discard tiles that are useless to the other players.  This is called “dogging” tiles.”

Sources for other answers: Mah Jongg Made Easy page (2020 page 18); National Mah Jongg League Bulletin (1983, 1984, 1986, 1999 page 5, 2000 page 6)