Riichi Scoring Trainer

Setting out the tiles…

List of yaku and bonus tiles

A winning hand needs at least one yaku. Add compatible yaku, then bonus han. Closed means no chi, pon or open kan; a concealed kan preserves a closed hand. A dash means the yaku is unavailable when open.

One han yaku
Yaku	Closed	Open	Condition
Riichi	1	—	Declare riichi with a ready hand, then win.
Declare riichi while closed and waiting on 3 or 6 bamboo, then ron on 6 bamboo. The declaration supplies this yaku.
Ippatsu	1	—	Win after riichi, before your next discard; any call or kan interrupts it.
After declaring riichi, ron on 6 bamboo before your next discard. Nobody has called or declared a kan in between.
Menzen tsumo	1	—	Self-draw with a closed hand.
Self-draw the marked 6 bamboo with every group still concealed. Any legal closed hand can earn this yaku.
Pinfu	1	—	Four sequences, a valueless pair, and a two-sided sequence wait.
Closed hand: four sequences and an 8-circles pair. The 4–5 bamboo wait accepts 3 or 6 bamboo; ron on 6. No value pair or wait fu.
Iipeikou	1	—	Two identical sequences.
Closed hand. The two 1–2–3 character sequences are identical; the other groups may differ.
Tanyao	1	1	Only numbered tiles 2–8.
Chii All tiles are numbered 2–8. The first sequence is open, which is allowed in Mahjong Soul.
Yakuhai	1 each	1 each	Dragon, seat-wind or round-wind triplet/kan. A wind matching both earns 2 han.
The red-dragon triplet gives 1 han. Dragon sets always qualify; wind sets must match your seat or the round.
Rinshan kaihou	1	1	Win on the replacement draw after a kan.
Open kan After declaring the marked open kan, self-draw 9 bamboo from the replacement tiles. The timing, rather than the shape, supplies rinshan.
Chankan	1	1	Ron on an opponent’s added-kan tile.
An opponent tries to add 6 bamboo to an existing pon. Ron on that tile to complete this hand; their added kan is robbed.
Haitei	1	1	Win on the last live-wall draw.
Self-draw 6 bamboo as the last tile of the live wall. A kan replacement draw does not qualify.
Houtei	1	1	Win on the final discard.
Ron on 6 bamboo when it is the final discard after the last live-wall draw.

Yaku terminology: EMA reference sheet. Tournament scoring options differ from this trainer.

Two han and higher
Yaku	Closed	Open	Condition
Double riichi	2	—	Riichi on your first discard, before any call or kan.
Declare riichi on your very first discard, before any call or kan, then later win on 6 bamboo. This replaces ordinary riichi.
Chiitoitsu	2	—	Seven different pairs.
Seven different pairs: the North completes the seventh. Four copies of one tile cannot count as two pairs.
Sanshoku doujun	2	1	The same sequence in all three suits.
Closed example: 1–2–3 appears once in characters, circles and bamboo. The remaining sequence and pair can be anything.
Ittsu	2	1	123, 456 and 789 sequences in one suit.
Closed example: 1–2–3, 4–5–6 and 7–8–9 are three complete character sequences.
Chanta	2	1	Every group and pair contains a terminal/honour; includes a sequence and an honour.
Closed example: each sequence contains 1 or 9, while the other set and pair contain terminals or honours. East provides the required honour.
Toitoi	2	2	Four triplets/kans and a pair.
Pon Four triplets and a pair, with the 1-character pon open. Sequences are not allowed; kans may replace triplets.
Sanankou	2	2	Three concealed triplets/kans.
The 1-character, 2-circle and 6-bamboo triplets were all completed without a call. Ron completes the separate 7–8–9 circle sequence.
Sankantsu	2	2	Three kans.
Open kan Open kan Open kan Three declared kans, plus a sequence and pair. Each kan contains four physical tiles but counts as one group.
Sanshoku doukou	2	2	Same-number triplets/kans in all three suits.
Pon A triplet of 2 in each of the three suits. The character triplet is open; this yaku keeps its full 2 han.
Honroutou	2	2	Only terminals and honours.
Pon Only 1s, 9s and honours. This example has four triplets (also toitoi); seven pairs can also satisfy honroutou.
Shousangen	2	2	Two dragon triplets/kans; remaining dragon pair. Also count both yakuhai.
Pon White- and green-dragon triplets plus a red-dragon pair. Add the two dragon yakuhai as well as the 2 han for shousangen.
Ryanpeikou	3	—	Two pairs of identical sequences.
Closed hand: two identical 1–2–3 character sequences and two identical 7–8–9 circle sequences. Count ryanpeikou, not iipeikou or seven pairs.
Honitsu	3	2	One numbered suit plus honours.
Closed example: every numbered tile is a character, with East and South honours alongside them.
Junchan	3	2	A terminal in every group and pair; includes a sequence, no honours.
Closed example: a 1 or 9 appears in every group and the pair. There are sequences and no honours.
Chinitsu	6	5	One numbered suit; no honours.
Closed example: all fourteen tiles are characters. There are no circles, bamboo or honours.

Higher yaku replace their lower versions: double riichi replaces riichi; ryanpeikou replaces iipeikou and cannot combine with chiitoitsu. Likewise, chinitsu replaces honitsu, and junchan replaces chanta. See the Swedish riichi reference for another compact yaku overview.

Yakuman

Yakuman	Hand	Condition
Kokushi musou	Closed	All 13 different terminals/honours, plus one duplicate.
Before the win, 1 character was already paired and red dragon was missing. Ron on red dragon completes all thirteen terminal/honour types: single yakuman.
Suuankou	Closed	Four concealed triplets/kans. Ron must complete the pair.
All sets are concealed. Self-draw red dragon to complete the fourth triplet from a double-pair wait. Ron on this triplet would not qualify.
Daisangen	Either	All three dragon triplets/kans.
Pon White-, green- and red-dragon triplets. The white-dragon pon is open; daisangen still qualifies.
Shousuushii	Either	Three wind triplets/kans and the fourth wind pair.
Pon East, South and West triplets with a North pair. The last group can be any sequence, triplet or kan.
Daisuushii	Either	All four wind triplets/kans. Double yakuman.
Pon Triplets of East, South, West and North. Mahjong Soul awards double yakuman; the pair here is 2 characters.
Tsuuiisou	Either	Honours only.
Pon Every tile is a wind or dragon. This open example contains no numbered suit; an all-honour seven-pairs hand also qualifies.
Chinroutou	Either	Terminals only.
Pon All tiles are 1s and 9s, with no honours. Every set must therefore be a triplet or kan.
Ryuuiisou	Either	Only 2, 3, 4, 6, 8 bamboo and green dragons.
Only the entirely green tiles appear: 2, 3, 4, 6 and 8 bamboo, plus green dragon. The 2–3–4 bamboo sequence is allowed.
Chuuren poutou	Closed	1112345678999 plus one extra tile, all one suit; no kan.
Closed hand in one suit: 1112345678999 plus an extra 5. Before winning on 2 characters, the hand lacked a 2, so this is not the pure nine-sided wait.
Suukantsu	Either	Four kans.
Open kan Open kan Open kan Open kan Four declared kans and a pair. The kans may be open or concealed; all four are shown open here.
Tenhou	Closed	Dealer wins immediately on the initial deal.
You are the dealer and these fourteen tiles form a winning hand in the initial deal, before any discard. The marked tile is part of that deal.
Chiihou	Closed	Non-dealer wins on their first draw, before any call or kan.
You are not the dealer. Your very first draw is 6 bamboo and completes the hand; nobody has called or declared a kan.
Suuankou tanki	Closed	Four concealed triplets/kans with a pair wait. Double yakuman.
Four concealed triplets were already complete. Ron or tsumo on the single 4 circles completes the pair: double yakuman.
Kokushi musou 13-sided wait	Closed	One of every terminal/honour before the win; any of the thirteen can complete the pair. Double yakuman.
Before winning, the hand held one of each of the thirteen terminal/honour types. Any one could make the pair; here 1 character does: double yakuman.
Junsei chuuren poutou	Closed	Exactly 1112345678999 in one suit before the win; any of the nine numbers can win. Double yakuman.
Before winning, the concealed tiles were exactly 1112345678999 characters. Any character could win; the extra 5 makes this double yakuman.

Pattern definitions are also explained in the WRC rulebook; its yakuman values differ. Here, Mahjong Soul’s other double yakuman are suuankou tanki (pair wait), kokushi musou 13-sided wait, and junsei chuuren poutou (nine-sided wait). They replace the corresponding single yakuman.

Bonus han & special cases

Dora: +1 han per matching tile. The indicator points to the next tile: 9 → 1, East → South → West → North → East, white → green → red → white.
Dora indicator

The 2-character indicator makes 3 characters dora. This hand holds three of them, so add 3 bonus han. Riichi supplies a yaku.
Uradora: the same rule, using the hidden indicators; only a riichi winner receives it.
Ura indicator

After a riichi win, reveal the 7-circle ura indicator: 8 circles are uradora. The pair adds 2 bonus han. Without riichi, neither counts.
Red dora: +1 for each red five. A red five can also earn ordinary dora and uradora.
Dora indicator

The red 5 characters adds 1 red-dora han. With a 4-character indicator, that same red five also adds 1 ordinary dora han.
Nagashi mangan: a special draw payment for an unclaimed discard pile containing only terminals/honours. It is not a completed-hand exercise here.
Your unclaimed discards

Example discard pile: only terminals and honours, none claimed by another player. If the round ends in an exhaustive draw and the conditions still hold, this can receive nagashi mangan; these are discards, not a winning hand.

How fu & points work

1. Add fu, then round up

Start at 20 fu. Add 10 for closed ron or 2 for tsumo, then the group, pair and wait values below. Round the sum up to a multiple of 10.

Group	Open	Concealed
Triplet of 2–8	2	4
Terminal/honour triplet	4	8
Kan of 2–8	8	16
Terminal/honour kan	16	32

Sequences give 0. A dragon, seat-wind or round-wind pair gives 2; a pair matching both winds gives 4. Add 2 for an edge wait (12 → 3 or 89 → 7), a middle wait (24 → 3), or a pair wait. Two-sided and double-pair waits give 0.

A triplet completed by ron gets open triplet fu, even when the hand remains closed. This also matters for sanankou and suuankou.

General fu categories: Charm City Riichi’s scoring guide. Mahjong Soul’s double-wind pair rule is specified in its ranked rules.

Pinfu: exactly 20 fu on tsumo (no tsumo fu), 30 on ron.
Chiitoitsu: exactly 25 fu; no additions or rounding.
Open 20-fu ron: receives 2 extra fu, so rounds to 30. It does not earn pinfu.

2. Find the base points

For a hand below mangan, base = fu × 2^{han + 2}. At 2,000 base points, apply the mangan cap. From 5 han upwards, use the limit below; fu no longer changes the payment.

Limit	Requirement	Base	Non-dealer ron	Dealer ron
Mangan	5 han, or base ≥ 2,000	2,000	8,000	12,000
Haneman	6–7 han	3,000	12,000	18,000
Baiman	8–10 han	4,000	16,000	24,000
Sanbaiman	11–12 han	6,000	24,000	36,000
Kazoe yakuman	13+ ordinary han	8,000	32,000	48,000
Yakuman	Per yakuman unit	8,000	32,000	48,000

Kazoe stays a single yakuman even at 26+ han. Actual yakuman replace ordinary yaku and dora; add their yakuman units instead. No kiriage: 4 han 30 fu and 3 han 60 fu remain below mangan.

3. Work out who pays

Round each payment up to the next 100 points, after multiplying the base.

Winner	Ron: discarder pays	Tsumo: opponents pay
Non-dealer	Base × 4	Dealer: base × 2; other two: base each
Dealer	Base × 6	Base × 2 each

Example: 3 han 40 fu gives 40 × 32 = 1,280 base points. Non-dealer ron: 5,120 → 5,200. Non-dealer tsumo: 1,300 / 2,600 (two non-dealers / dealer), totaling 5,200. Dealer tsumo: 2,600 each.

The Japan Mahjong Dourenmei score tables show the standard rounded payments; this trainer additionally uses Mahjong Soul’s kazoe and double-yakuman rules.

Rules used here

Standard four-player Mahjong Soul scoring: open tanyao, one red five per suit, uradora after riichi, kazoe yakuman, double yakuman and stacked yakuman. Exercises use zero honba and no riichi-stick payments; points mean the hand’s payment. No liability-payment scenarios are generated. In a full game, each honba adds 300 to ron or 100 from each tsumo payer; riichi deposits go to the winner separately.

Rules reference: Mahjong Soul ranked rules and official FAQ. Custom rooms and tournament rulebooks can use different options.

Riichi Scoring Trainer

The winning hand

In hand

Winning tile

Dora indicators

Ura-dora indicators

Seat wind

Round wind

Your count

Payment calculation