2014 Anime Central Mahjong Tournament

The Anime Central Mahjong Tournament is a mahjong competition held within the anime convention, Anime Central. The convention itself is held at Rosemont, Illinois near Chicago. The tournament is hosted by the Chicago Area Mahjong Players. The first edition was in 2010 and has since been held annually.

Rules

These are rules planned for the 2014 edition. The rules primarily emulate Tenhou.net, with some slight modifications due to time.

• Japanese Mahjong: 136 tiles. Pinzu, Manzu, Souzu, Kazehai, Sangenpai. Four of each.
• Akadora: 1-per Pinzu, Manzu, Souzu. One 5 replaced in each suit for a red dora.
• Start score: 25,000. Minimum score to win: 30,000. (Barring the time limit)
• Uma: Standard (+20, +10, -10, -20)
• Atozuke (ari)

Yakuless hand gains yaku on winning discard.

• Agari tenpai (ari)

No wind rotation when dealer is tenpai.

• Kuikae (nashi)

Discarding a tile from an existing tile group (e.g. discarding 1 from 123, after calling on 4).

• Kuitan (ari)

Open tanyao.

• Double ron(ari)

Two players winning off of one discard.

Riichi sticks awarded to player closest to the discarder clockwise.

• Sanchahou(ari)

For triple ron, then abortive draw is invoked.

• Furiten riichi (ari)

Riichi while furiten is neither subject to chombo or noten payment.

• Kan dora

Immediate flip with ankan (closed kan).

Flip after discard with other kans (open kan).

• Yakuman pao(ari)

Half of yakuman payment if player upgrades opponent hand to apparent yakuman (daisangen, shousuushi, or daisuushi).

Full of yakuman payment in the event of yakumantsumo.

• Daiminkan pao(nashi)

Pao rule not applied to rinshankaihou acquired by daiminkan. Rinshan tsumo operates like any other tsumo.

• Karaten tenpai (ari)

Karaten does not imply noten at ryuukyoku.

• Renhou(yaku set to mangan default)

Renhou is set to mangan regardless.

• Kokushi chankan via ankan (nashi)

Cannot ron off an ankan (closed kan).

• Chombo(post game)

The penalized pays 3000 to each player, at the end of the game. If the dealer commits chombo, wind rotates.

• Time limit cap (90 minutes): Time limit of 90 minutes is imposed.

Game clock begins at judge’s call, where the judge will ensure that all games start simultaneously.

Time stalling is discouraged and may warrant point penalties if necessary.

Soft Cap: Near 85 min mark, one more hand may be played after the current hand.

Hard Cap: Current hand when past 90 minutes is the last hand.

• Shaakyoku(nashi)

No West Round.

Game ends after wind rotation at oorasu, regardless of point standing, if the game ends before 90 minutes.

• Agari yame(ari)

Last dealer may have the option to end game prematurely after one hand in oorasu, with or without the lead.

Otherwise, the last dealer may call for additional hands, if time allowed.

Rotation system

Sixteen Players		Twenty Players
Table 1	Table A	Table 1	Table A
Table 2	Table B	Table 2	Table B
Table 3	Table C	Table 3	Table C
Table 4	Table D	Table 4	Table D
		Table 5	Table E

Given the time allotted, the tournament itself will feature two hanchan "preliminary" plus a single hanchan for a final. For now, the number of entrants will be slated to either 16-players or 20-players. Players will be randomly assigned to the tables in the first hanchan. For the second hanchan, player results from the first hanchan will decide table designations.

Rotation after the first hanchan (Sixteen):

• First -> Remains at the current Table
• Second -> Table to the Right
• Third -> Table across
• Fourth -> Table to the Left

Rotation after the first hanchan (Twenty):

• First -> Remains at the current Table
• Second -> Table to the Right
• Third -> Table across Right
• Fourth -> Table to the Left

External links

• Anime Central
• 2014 rules