immahjong
Chinese Official · MCR

Score a hand.
Understand every fan.

Build a complete hand with authentic Chinese Official tiles. The calculator validates its structure, compares possible decompositions, and explains the highest supported score.

Read how the 8-fan minimum and exclusions work →
34 tile faces8 fan minimum0 hidden rules
Choose an add type, then select tiles from the library.
Step 1

Tile library

Chinese Official tiles

Each click adds the complete selected group. The four-copy limit is always enforced.

Characters万
Bamboo条
Dots筒
Winds风牌
Dragons三元牌
Step 2

Build the hand

0/14structural tiles
0/14 concealed0/4 melds0 physical tiles
Concealed handSelect a tile below to remove it
No concealed tiles selected yet.
Declared meldsChi, Pong, and Kong groups appear here
No declared melds. The hand is currently closed.
Step 3

Winning context

Win method
Flower tiles
0
Special conditions
Step 4

Result

8-fan minimum
算

Ready when your hand is.

Build a complete hand, choose the winning context, then calculate its fan.

Scoring coverage · 81 fan rules

This learning calculator covers common Chinese Official patterns, Seven Pairs, Thirteen Orphans, Kongs, winds, and special win conditions. It is not a substitute for a tournament referee.

88 fanThirteen Orphans · Nine Gates · Big Four Winds · Big Three Dragons · All Green · Four Kongs · Seven Shifted Pairs
64 fanLittle Four Winds · Little Three Dragons · All Honors · Four Concealed Pungs · Pure Terminal Chows · All Terminals
48 fanQuadruple Chow · Four Pure Shifted Pungs
32 fanFour Pure Shifted Chows · Three Kongs · Mixed Terminals and Honors
24 fanSeven Pairs · Seven Star Not Connected · Full Flush · Pure Triple Chow · Pure Shifted Pungs · All Even Pungs · Upper Tiles · Middle Tiles · Lower Tiles
16 fanPure Straight · Three-Suited Terminal Chows · Pure Shifted Chows · All Fives · Triple Pung · Three Concealed Pungs
12 fanUpper Four · Lower Four · Big Three Winds · Lesser Honors and Knitted Tiles · Knitted Straight
8 fanMixed Straight · Reversible Tiles · Mixed Triple Chow · Mixed Shifted Pungs · Last Tile Draw · Last Tile Claim · Out with Replacement Tile · Robbing the Kong · Two Concealed Kongs · Chicken Hand
6 fanMixed Shifted Chows · All Pungs · Half Flush · All Types · Melded Hand · Two Dragon Pungs
4 fanOutside Hand · Fully Concealed Hand · Two Melded Kongs · Last Tile
2 fanDragon Pung · Prevalent Wind · Seat Wind · Concealed Hand · All Chows · Tile Hog · Double Pung · Two Concealed Pungs · Concealed Kong · All Simples
1 fanPure Double Chow · Mixed Double Chow · Short Straight · Two Terminal Chows · Terminal or Honor Pung · Melded Kong · One Voided Suit · No Honors · Edge Wait · Closed Wait · Single Wait · Self Draw · Flower Tiles