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5.5Winning on a discard (ron)

A player who can form a valid hand with at least one yaku with the last discarded tile can win by clearly declaring "ron", unless he is furiten.

3.3.10Mahjong on a discard (ron)

A player who can form a valid mahjong hand with at least one yaku with the last discard, can win by clearly declaring ron or mahjong, unless he is furiten.

5.6Winning on self-draw (tsumo)

A player who can form a valid hand with at least one yaku with a tile just drawn from the wall or the dead wall can win by clearly declaring "tsumo". The player should keep the winning tile apart from the rest of the hand, so it is clear to all players which was the winning tile. A player who is furiten can still win on self-draw.

If the player fails to keep the winning tile apart, his win is still valid but he will not score any minipoints or yaku requiring a particular wait. I.e. the pinfu yaku cannot be awarded in such a case.

3.3.11Mahjong on self-draw (tsumo)

A player who can form a valid mahjong hand with at least one yaku with a tile just drawn from the wall or the dead wall, can win by clearly declaring tsumo or mahjong. The player should keep the winning tile apart from the rest of the hand, so that it is clear to all players which was the winning tile. A player who is furiten can still win on self-draw.

5.7End of a hand

A hand can end in two ways: by exhaustive draw (no-one declares a win after the discard after the last tile) or by one player winning. Chonbo results in a re-deal and does not count as a hand.
There are no abortive draws.

3.4End of a hand

A hand can end in three ways: by exhaustive draw (no-one declares a win after the discard after the last tile), by abortive draw or by one or more players declaring a win. Chombo results in a redeal and does not count as a hand.

5.7.1Last tile

The last tile can only be claimed for a win, not for a chow, pung or kong. In case a kong is declared at the second-to-last tile, the replacement tile becomes the last tile. It is not allowed to declare a concealed kong on the last tile.
The fourteen tiles of the dead wall are not used.

3.4.1Last tile

The last tile in the wall can only be claimed for a win, not for a kong, pung or chow. In case a kong is declared at the second-to-last tile, the replacement tile becomes the last tile. It is not allowed to declare a concealed kong on the last tile.

5.7.2Exhaustive draw

An exhaustive draw occurs if no-one declares a win after the discard after the last tile.
After an exhaustive draw the players must announce if their hand is tenpai or noten. Tenpai hands must be shown (tiles turned face up). Noten hand must not be revealed. A player having a tenpai hand can choose to declare it noten and not reveal it, unless he had declared riichi.
Players announce if they are tenpai or noten in order: East player declares first, then South, then West, and finally North. It is permissible to declare out of turn, but the announcement cannot be changed.

Noten players pay a penalty to tenpai players.
The total noten penalty amounts to 3,000 points, shared between players as follow:
Number of noten playersPenalty paid by each noten playerPoints earned by each tenpai players
00
13,0001,000
21,5001,500
31,0003,000
40


Players who have declared riichi are obligated to show their tenpai hand in case of an exhaustive draw. If they can't, or won't, they will be penalized for noten riichi (see "wrong riichi declaration" in the fouls section).

After an exhaustive draw, a continuance counter is placed on the table at East’s right-hand side.

3.4.2Exhaustive draw

An exhaustive draw occurs if no-one declares a win after the discard after the last tile. The 14 tiles of the dead wall are not used. After an exhaustive draw the noten players (a player who can’t or won’t show a tenpai hand) pays a penalty to tenpai (waiting) players (players who show a tenpai (waiting) hand). The total noten penalty amounts to 3000 points. E.g. if three players are tenpai, the noten player pays 1000 to each, whereas if only one player is tenpai he receives 1000 points from each of the noten players. A player is not considered tenpai if he is waiting only for a tile of which he already has 4. A player is still considered tenpai if all his waiting tiles are visible among the discards and declared sets. Players who have declared riichi are obliged to show their tenpai hands in case of an exhaustive draw. After an exhaustive draw, a counter is placed on the table at East’s right-hand side.

5.7.3No abortive draws

The World Riichi Championship Rules do not recognize any abortive draw cases.

3.4.3Abortive draw

After an abortive draw no noten penalty is payed, and players who have declared riichi are not obliged to show their tenpai hands, except in case of four riichi declarations. After an abortive draw, a counter is placed on the table at East’s right-hand side. Abortive draw can occur in four ways:
• A player who after his first draw in the uninterrupted first set of turns has at least nine different terminals and honours may declare an abortive draw.
• No-one wins after the discard after the fourth kong, and the four kongs do not belong to the same player.
• All players discard the same wind in the first uninterrupted set of turns.
• All four players have declared riichi, and no-one declares a win on the discard on which the fourth player declares riichi. All players are obliged to show their tenpai hands.

5.7.4Handling riichi bets after drawn games

In case of a drawn game, any riichi bets stay on the table to be claimed by the next player who declares a win.

Any riichi bets remaining on the table at the end of the hanchan stay on the table. Nobody collects them.

3.4.4Handling riichi bets after drawn games

In case of a drawn game (whether by exhaustive draw or abortive draw), any riichi bets stay on the table to be claimed by the next player who declares a win.

5.7.5Furiten

A furiten or temporary furiten player is not allowed to claim a win on a discard. He can still win by self-draw.

• A player is furiten if he can form a valid hand with one of his previous discards, even if the hand would not have any yaku. A furiten player can choose to change his hand to avoid being furiten, unless he has declared riichi.

• A player is temporarily furiten if he fails to claim a win on a discard completing a valid hand, even if the hand would not have any yaku. This also applies for missing an opportunity to rob a kong.
The state of temporary furiten ends when the player draws or claims a tile, unless he has declared riichi. It does not matter if the set of turns is interrupted by claims for a chow, pung or kong: the player is still temporarily furiten until his next draw.
If the player had declared riichi, he remains temporarily furiten until the end of the hand.

3.4.5Furiten

If a waiting player can form a mahjong hand using one of his previous discards, he is furiten and is not allowed to claim a win on a discard.
A player who is furiten can choose to change his hand to avoid being furiten (except if he has declared riichi).
A player who is furiten, can still win on a self-drawn tile.
A player who fails to claim a win on a discard that completes a mahjong hand, is temporarily furiten, even if the passed tile gives him no yaku, and he cannot claim a win on a discard in the current set of turns. If the set of turns is interrupted by claims for kong, pung or chow, the player is no longer temporarily furiten. The state of temporary furiten always ends when the player draws a tile, i.e. no player is ever considered furiten on a selfdrawn tile.

Furitenexample 1. If a waiting player can form a mahjong hand using one of his previous discards, he is furiten and is not allowed to claim a win on a discard, even if the hand completed with the previous discard is without a yaku.
Consider a player with the following hand:
3man3man1sou1sou1sou1pin2pin3pin4pin5pin6pin7pin8pin
The player has a three-sided wait for 3-6-9. The player is furiten if any of the three waiting tiles are among his discards.

Furitenexample 2. Consider a player with the following hand:
3man3man1sou2sou3sou1sou2sou3sou4sou5sou6sou2pin3pin
The player is waiting 1-4 circles. A discarded 7 circles does not make the player furiten. Only if one of the waiting tiles (1 or 4 circles) are among the discards is the player furiten.

Furitenexample 3. Consider a player with the following hand:
redred4pin4pin4pin5pin6pin1man2man3man1man2man3man
The player is waiting for three tiles: 4 and 7 circles and red dragon. If the player has discarded one of these tiles, he is furiten.