This is your only Eye Candidate.
Completing this meld will leave your hand without an Eye.
Eye Alert
This is your only Eye. You need it to win.
BOLO for Eyes
No Eye Candidate detected.
BOLO for Eyes.
Over-Paired Hand
You now have 4 pairs. Are you pursuing Seven Pairs?
Seven Pairs
Good luck!
Coaching is on hold while you pursue Seven Pairs.
Seven Pairs
Are you still pursuing Seven Pairs?
Turn Cycle
What's your next action?
Seven Pairs
Coaching is back on.
Over-Paired Hand
Consider reducing your pairs to improve your hand’s flexibility.
Escalera
You now have 7 distinct numbers in one suit.
Are you pursuing Escalera (a Straight)?
Escalera Selected
Coaching has been suspended while you pursue
Escalera (a Straight).
Escalera
Are you still pursuing Escalera (a Straight)?
Escalera Ended
Coaching has resumed.
About MJC
Mahjong Coach (MJC) is a learning tool for beginning and intermediate Mahjong players.
Using Six Box Theory™, MJC helps players learn, understand, and improve their Mahjong playing skills.
Additional coaching features arrive in Version 2.0.
Welcome to Mahjong Coach (MJC)
To get started:
Select your Display preferences. This is the order in which you normally organize tiles on your rack.
Select your Role: Player or Dealer.
Select your Seat and Round winds.
Enter your starting tiles.
Review your settings and tile entries.
Press Play On!
About 6BT
Six Box Theory™ (6BT) provides a method for understanding Mahjong hand structure.
Rather than viewing a hand as individual tiles, 6BT organizes it into boxes, offering a simpler way to visualize, understand, and develop your hand.
This makes it easier to recognize strengths and weaknesses, improve tile efficiency, and make better discard decisions.
Understanding the Boxes
To help you better see the relationships between the tiles in your hand,
Six Box Theory™ organizes your hand into boxes.
Complete Boxes (CB)
Completed melds that require no additional tiles.
These appear at the bottom of the display.
Developing Boxes (DB)
Groups of tiles that are working toward becoming Complete Boxes.
These tile groups are called Candidates.These appear in the middle of the display.
Reserves (R)
Tiles not currently assigned to a CB or DB.
These appear at the top of the display.
Complete six boxes—five melds and one Eye—
and That's Mahjong!
Meet the Candidates
They're called Candidates because each represents a possible path toward
becoming a Complete Box. As the hand develops, some Candidates will become
Complete Boxes while others may change or be replaced.
Pong-Kang Candidate (PKC) A four-tile Developing Box that can be declared as a Kang or NEWS.
Chow-Pong Candidate (CPC) Three or four suited tiles that can develop into either a Chow or a Pong.
Eye-Pong Candidate (EPC) Two matching tiles that can serve as the Eye or develop into a Pong.
Eye Candidate (EC) Two matching tiles being held as the Eye.
Chow Candidates Two suited tiles that are working toward becoming a Chow.
Double-Sided Wait (DSW) Two consecutive suited tiles that can complete a Chow from either end.
Middle Wait (MW) Two suited tiles with one number between them, waiting for the middle tile to complete the Chow.
Edge Wait (EW) A 1–2 or 8–9 combination waiting for the single tile that completes the Chow.
Half-Eye (HE) A single tile being held as a possible half of a pair for the Eye.
User Guide
This feature is coming soon.
Acknowledgments
Special thanks to my friends in JEZEMS, a close circle of friends whose camaraderie and games introduced me to the wonderful world of Filipino Mahjong and helped inspire the creation of Six Box Theory™ and the Mahjong Coach app.
“Cha na lang!”
Feedback
Thank you for helping us improve Mahjong Coach.
We welcome bug reports, suggestions, comments, and feature requests.