MAH JONGG IN ERROR AND NEXT STEPS (Article 197)

Commentary: When a mah jongg in error occurs, some circumstances need to be considered when determining the next steps:

If they do not expose tiles from their rack, they can retract the declaration without penalty (Mah Jongg Made Easy 2024, page 21, #2).

If they place the claimed discard on or in their rack—or they expose tiles only for the current exposure—and then discover they are not ready to win, the declaration may be retracted without penalty. However, the player is still committed to the exposure that was made (Mah Jongg Made Easy 2024 pages 21 #3).

After a player has declared mah jongg in error, they are disqualified. Their turn ends, so they do not discard. They must return newly exposed tiles to the sloped part of the rack. If the hand was supposed to be concealed, they must return all tiles to the sloped part of the rack. Valid exposures made before disqualification remain on the rack, and any jokers are eligible for exchange. The game continues with the player to their right, except in one case. If the mah jongg in error occurred after the player claimed a discard and another player could declare mah jongg with that tile, that player could use the tile and declare mah jongg (Mah Jongg Made Easy 2024 page 23 #6).

Suppose more than one player declares mah jongg in error, and one player has an intact hand. In that case, the last player to declare mah jongg in error pays the player with the intact hand double the value of the hand they were attempting to make when they declared mah jongg (back of the NMJL card on the middle panel, Mah Jongg in Error #3).

Regardless, the game continues with the players with intact hands. Suppose one of those players can disqualify the other for having an invalid hand. In that case, the disqualified player pays the player with the intact hand double the value of the invalid hand (Mah Jongg Made Easy 2024, page 22 5 [b]).

Incidentally, if any player prematurely tosses in their hand and they destroy a wall, that player pays the players with intact hands the lowest value on the card (Mah Jongg Made Easy 2024, page 22, 5 [d]).

Scenario	Tiles	Outcome	Next Steps	Wiki Article
A player declares mah jongg in error without exposing tiles	No change	The player can retract the declaration and continue the turn	No penalty and the game continues normally	MAH JONGG IN ERROR WITH NO NEW EXPOSURES (Article 52)
A player declares mah jongg in error with a concealed hand	Entire hand returns to the rack	The player is disqualified, and the game resumes with the player to the right	The game continues with the remaining eligible players; no jokers are available for exchange from that hand	MAH JONGG IN ERROR AND NEXT STEPS (Article 197)
A player declares mah jongg in error while exposing part of their hand	The tiles go back in the sloped part of the rack	The player is disqualified	The game continues with the remaining eligible players	MAH JONGG IN ERROR WITH A PARTIAL EXPOSURE (Article 55)
A player declares mah jongg in error with prior valid exposures	Prior valid exposures remain; newly exposed concealed tiles return to the rack	The player is disqualified, and the game resumes with the player to the right	The game continues with the remaining eligible players; jokers in valid exposures remain available for exchange	MAH JONGG IN ERROR AND NEXT STEPS (Article 197)
A player declares mah jongg in error, and another player wanted it for an exposure	Claimed discard remains with the disqualified hand	The player is disqualified	The other player cannot claim the discard for an exposure; the game continues with the remaining eligible players	MAH JONGG IN ERROR WITH WINNING TILE WANTED BY ANOTHER PLAYER (Article 51)
A player declares mah jongg in error, and another player needs that tile for mah jongg	Discard may be claimed by the other player for mah jongg	The player is disqualified, and the other player’s mah jongg should be verified	If valid, the game ends and the other player is rewarded	MAH JONGG IN ERROR WITH WINNING TILE WANTED BY ANOTHER PLAYER (Article 51)
A player declares mah jongg in error with three other intact hands	Hand handled according to its exposure status	The player is disqualified and the remaining three players continue	The game continues with the remaining eligible players	MAH JONGG IN ERROR WITH NO THROWN IN HANDS, SCENARIO 1 (Article 159)
A player declares mah jongg in error, followed by two thrown-in hands, leaving one intact hand	Thrown-in hands cannot be recovered	Play cannot continue	Sole intact player receives the applicable payment	MAH JONGG IN ERROR WITH THREE DEAD HANDS SCENARIO 2 (Article 138)
A player declares mah jongg in error, then someone else throws in their hand, destroying the wall	All tiles thrown in	The game ends	The player who destroyed the wall pays the active players the lowest value on the card	MAH JONGG IN ERROR WITH A DESTROYED WALL – SCENARIO 4 (Article 54)
A player declares mah jongg in error, followed by another mah jongg in error, with another player throwing in their hand	All tiles thrown in	The game ends	The last player who declared mah jongg in error pays the active player the value of the hand the active player was attempting	MAH JONGG IN ERROR FOR TWO PLAYERS AND ANOTHER TOSSED IN THEIR HAND (Article 56)
A player declares mah jongg in error, and another player throws in their hand	Thrown-in hand cannot be recovered	Both players are disqualified	The game continues with the remaining eligible players	Implied on the back of the card

Question from a Player: A player with an exposure containing a joker mistakingly calls MJ and exposes the rest of her tiles. She only used 13 tiles…short one tile for MJ. Her hand is now dead. As no one else made an exposure the game can continue. Can another player claim the joker from the original exposure or is that also dead?

Answer from the NMJL: If a player calls Mah Jongg in error and exposes part or all of the hand and all other hands are intact, the game continues but the declarers hand is “dead.” All tiles are returned to the rack. A Mah Jongg hand “intact” means that a player has not exposed any tiles from their hand, other than the tiles that had been called for an exposure before the player had declared Mah Jongg in error. MJME 2020 omitted: The same penalty applies for calling a discard and making an incorrect exposure. “Dead” hand discontinues play, does not pick and discard and pays winner full value of hand.

When a player declares Mah Jongg in error and has been playing an exposed hand, the Jokers which were in the correctly called exposure(s) before the error, may be redeemed by any of the other players with a like tile, when it is their turn. However, at the point the hand becomes “dead” the part of the hand that was in error is returned to the rack. When a player declares Mah Jongg in error and has been playing a concealed hand, no Jokers may be redeemed, and the entire hand is returned to the sloped portion of the rack.

Source: Mah jongg Made Easy (2024, page 22 #4)