Mahjong AI Combo

How to use

From replay to a three-AI comparison on one screen (about 10 minutes the first time)

1Get the replay URL→2Analyze with each AI→3Register result URLs→4Compare

1Get your replay URL

Mahjong Soul: copy the share URL from your game record. Tenhou: copy the replay URL (tenhou.net/0/?log=…).

2Add the replay, then use the buttons

Press “＋ Add replay”, paste the replay URL and save — buttons that send it to each AI become available.

The form: buttons for Mortal, Gokujan and NAGA below the replay URL
Mortal (free)The button opens the analysis page with the URL pre-filled. Select the “KillerDucky (beta)” UI and analyze.
GokujanThe button opens the analysis page with the URL pre-filled. Analyze with the “Basic UI”.
🎁 New to Gokujan? Sign up via the author’s invite link and, on your first purchase, you’ll receive 1,000 credits (the author also receives 1,000). Sign up with the invite link ↗
NAGAAfter registering the Mortal result, the button auto-copies Tenhou editor URLs. Paste them into NAGA’s custom game analysis and include “ニシキ (Nishiki)” in the analysis type. (Tenhou replays go straight into NAGA’s URL analysis.)

Tip: Mortal → register its result URL → NAGA / Gokujan is the fastest order. Mortal alone is enough. NAGA has its own usage terms (points, etc.).

3Paste the result URLs and save

Just paste each AI’s result page URL into its field.

The result URL fields (Mortal, Gokujan, NAGA)

4Compare in the combo review

Press “Combo review” in the list to see all three AIs on one screen.

The “Combo review” button in the list
The review screen: bars from three AIs above the hand tiles
  • Bars above the hand = each AI’s recommendation (purple = NAGA / green = Mortal / blue = Gokujan). Disagreements are worth studying
  • Table on the right = recommendation (%) per candidate discard. The red frame is your actual discard
  • Error buttons jump to possible mistakes. The summary shows match rates for the game
Recommendation table where the three AIs each prefer a different discard

FAQ

Is it free?

This tool is free. Use of each AI service (such as NAGA analysis) is subject to that provider’s terms.

Do I need an account?

Not for this tool. The AI services themselves may require accounts.

Can I use just one AI?

Yes. A Mortal result URL alone is enough to open the combo review; adding NAGA and Gokujan adds more columns to compare.

Which replays are supported?

Tenhou and Mahjong Soul replay URLs.

Where is my data stored?

Your list is stored only in your browser and never on the server. Use “Export” to back it up and “Import” to restore.

Does it work on phones?

Yes, it works in mobile browsers. Landscape orientation is recommended because the screen is dense.

My result URL isn’t accepted

Only URLs from Mortal’s “KillerDucky (beta)” UI and Gokujan’s “Basic UI” style are accepted. For NAGA, include “ニシキ (Nishiki)” in the analysis type.

👀 View the demo (no signup)＋ Add a replay to start