Champion Go is a Go (also called as Igo, Baduk or Weiqi) game, powered by Crazy Stone.
Upgraded our 'Engine Server Game' to the Deep Learning version ! (Subscription is required)
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Champion Go is a Go application from beginner to expert!

Crazy Stone is a popularly known Go engine, based on the Monte-Carlo evaluation technique,
combined with tree search, and has achieved 5d at KGS rating.
We have optimized this particular version for Android.
(*)KGS・・・Internet Go game site played by Go fans all over the world

We have also provided 'Engine Server Game' mode (Subscription is required for these games).
n this mode, you can play games against the latest Deep Learning version of Crazy Stone
which is installed in our computer server. Therefore you can enjoy online games against a very strong computer program.

■ Medal challenge mode
Champion Go has 2 game modes, Normal game & Medal challenge.
In Medal challenge, there are 150 different levels of play
set by combination of COM level, handicap & board size.

You can win medals by defeating computer under the specified conditions.
Why don't you challenge to collect all the medals!

■ Friendly 3 input methods
There are 3 options of input methods (Zoom, Cursor & Touch).

■ Helpful Game record features
You can view full game history in the game record and restart game from the selected move,
which should help reviewing your game.
Various Game record features should be practical for improving your Go.
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■ Other Features
・Human vs Computer, Human vs Human(sharing a single device)
・3 types of board size (9x9,13x13,19x19)
・Handicap games, variable options of komi
・Hint (suggest)
・Instant Undo (available even when the computer is thinking)
・Automatic territory calculation
・Suspend/Re-start (in game)
・Save/Load game record
・Send game record (sgf-file) by e-mail
・Automatic and manual replay of a game record
・Byoyomi(time limit) settings (only for human)
・Atari warning
・Highlight the last move
・COM resign feature

※In medal challenge mode, some features related with game record and hints are not available.
Also Undo is limited to the recent move you made(2 consecutive Undos can not be made).

■ Engine Server Game
New version of Crazy Stone employing Deep Learning technology for Engine Server Games!
Subscription is required for these games ($2.63 per month).

There are 10 levels of play for each 9x9,13x13,19x19 board size.
Please enjoy online Go games against a very strong computer program.

Crazy Stone has made a huge step forward by combining Deep Neural Networks with Monte Carlo Tree Search.
The new program has scored a winning rate of over 90% against the previous version!

We have upgraded our Go Engine Server to this latest version, and now you can play games against Crazy Stone
that has achieved 7d on kgs rating.
(We have provided a 8 core engine server for these games)

*Notes for subscription
The price of subscription is $2.63 per month.
The Subscription will be renewed automatically unless cancelled more than 24 hours
before the end of it's current period.
To turn-off the auto renewal of subscription, please touch the 'Cancel Auto-renewal'
button below and change your Google Play Account settings.
You will not be able to cancel the current subscription during its active period.