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A Master of Go Screenshots
About A Master of Go
It is a Go AI featuring a neural network of that strong, open source AI. Leela Zero, ELF OpenGo, PhoenixGo, Minigo, SAI, and optionally KataGo!
You can use it as a strong opponent, and as a good teacher at the time of study.
With M2 processor of iPad Pro, the playouts are performed over 650 times per second with ELF OpenGo weight v1, and with A15 Bionic processor of iPad mini, over 200 times per second! Both exceed notebook computers and is comparable to desktop computers. With M2 processor of iPad Pro, the playouts are performed over 250 times per second with KataGo b18c384nbt!
Other famous weights are also included.
For your information, the playout speed on the iPad Pro 9.7 inch model(A9X processor) will be about 10 times per second, and the one on the iPhone 6(A8 processor) will be about 1 time per second. I think that even so it is stronger than most amateurs, but I am sorry that patterns of misreading ladders will increase.
Please be careful when considering purchasing.
Enjoy it!
You can use it as a strong opponent, and as a good teacher at the time of study.
With M2 processor of iPad Pro, the playouts are performed over 650 times per second with ELF OpenGo weight v1, and with A15 Bionic processor of iPad mini, over 200 times per second! Both exceed notebook computers and is comparable to desktop computers. With M2 processor of iPad Pro, the playouts are performed over 250 times per second with KataGo b18c384nbt!
Other famous weights are also included.
For your information, the playout speed on the iPad Pro 9.7 inch model(A9X processor) will be about 10 times per second, and the one on the iPhone 6(A8 processor) will be about 1 time per second. I think that even so it is stronger than most amateurs, but I am sorry that patterns of misreading ladders will increase.
Please be careful when considering purchasing.
Enjoy it!
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What's New in the Latest Version 6.6.0
Last updated on Feb 15, 2024
Old Versions
This is a new-feature version.
1. New feature: New index "AI Sense of a move", which is ratio between its policy value and maximum one.
2. New feature: added handicap-aware search (dynamicPlayoutDoublingAdvantageCapPerOppLead) in game mode for KataGo.
3. improved performance of default engine.
4. updated KataGo to v1.14.0.
5. updated KataGo_Heavy weight to kata1-b18c384nbt-s9131461376-d4087399203.
1. New feature: New index "AI Sense of a move", which is ratio between its policy value and maximum one.
2. New feature: added handicap-aware search (dynamicPlayoutDoublingAdvantageCapPerOppLead) in game mode for KataGo.
3. improved performance of default engine.
4. updated KataGo to v1.14.0.
5. updated KataGo_Heavy weight to kata1-b18c384nbt-s9131461376-d4087399203.
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Version History
6.6.0
Feb 15, 2024
This is a new-feature version.
1. New feature: New index "AI Sense of a move", which is ratio between its policy value and maximum one.
2. New feature: added handicap-aware search (dynamicPlayoutDoublingAdvantageCapPerOppLead) in game mode for KataGo.
3. improved performance of default engine.
4. updated KataGo to v1.14.0.
5. updated KataGo_Heavy weight to kata1-b18c384nbt-s9131461376-d4087399203.
1. New feature: New index "AI Sense of a move", which is ratio between its policy value and maximum one.
2. New feature: added handicap-aware search (dynamicPlayoutDoublingAdvantageCapPerOppLead) in game mode for KataGo.
3. improved performance of default engine.
4. updated KataGo to v1.14.0.
5. updated KataGo_Heavy weight to kata1-b18c384nbt-s9131461376-d4087399203.
6.5.0
Jan 7, 2024
This is a new-featured version.
1. New feature: KataGo benchmark. You can investigate number of threads suitable for your device.
2. improved limit of number of search nodes depending on your device.
3. implemented a new method checking the rest of available memory.
4. updated KataGo_Heavy to kata1-b18c384nbt-s8526915840-d3929217702.
1. New feature: KataGo benchmark. You can investigate number of threads suitable for your device.
2. improved limit of number of search nodes depending on your device.
3. implemented a new method checking the rest of available memory.
4. updated KataGo_Heavy to kata1-b18c384nbt-s8526915840-d3929217702.
6.4.1
Dec 11, 2023
This is a bug-fixed version.
1. fixed a bug that the app might be crashed when hand-off.
2. fixed a bug that the app might be crashed when using the default AI engine. this bug got into the app in version 6.4.0.
3. fixed a bug that the default AI engine misunderstood the same position with loosing stones as draw.
1. fixed a bug that the app might be crashed when hand-off.
2. fixed a bug that the app might be crashed when using the default AI engine. this bug got into the app in version 6.4.0.
3. fixed a bug that the default AI engine misunderstood the same position with loosing stones as draw.
6.4.0
Dec 4, 2023
This is an improved version.
1. fixed a bug that KataGo_Heavy weight did not take into account post process parameters.
2. displays maximum policy move with hightlight color.
3. improved a few points about performance of UI response.
1. fixed a bug that KataGo_Heavy weight did not take into account post process parameters.
2. displays maximum policy move with hightlight color.
3. improved a few points about performance of UI response.
6.3.1
Nov 7, 2023
This is a bug-fixed version.
1. fixed a bug that KataGo_Heavy did not start on 9x9 and 13x13 boards.
1. fixed a bug that KataGo_Heavy did not start on 9x9 and 13x13 boards.
6.3.0
Nov 6, 2023
This version has several improvements.
1. updated all KataGo weights with simple names with Light, Medium, and Heavy. All weights are stronger than previous ones.
2.. You can move a handicap stone by long-pres&drag&drop as well as a played stone.
3. The judgment bar shows position info, not recommended move's info even when using KataGo.
4. new feature: winrate bar chart race.
5. new feature: shows surprises in each variation in 4-division variations view.
1. updated all KataGo weights with simple names with Light, Medium, and Heavy. All weights are stronger than previous ones.
2.. You can move a handicap stone by long-pres&drag&drop as well as a played stone.
3. The judgment bar shows position info, not recommended move's info even when using KataGo.
4. new feature: winrate bar chart race.
5. new feature: shows surprises in each variation in 4-division variations view.
6.2.1
Jun 17, 2023
This is a bug-fixed version.
1. fixed a bug that situation bar and charts were not updated when playing with KataGo.
1. fixed a bug that situation bar and charts were not updated when playing with KataGo.
6.2.0
Jun 15, 2023
This release updates KataGo to v1.13.1!
1. updated KataGo engine to v1.13.1.
2. updated KataGo b18nbt weight to kata1-b18c384nbt-s6582191360-d3422816034.
3. indicating when compiling a weight.
1. updated KataGo engine to v1.13.1.
2. updated KataGo b18nbt weight to kata1-b18c384nbt-s6582191360-d3422816034.
3. indicating when compiling a weight.
6.1.1
May 1, 2023
This is a bug-fixed version.
1. fixed a bug that the app crashed when no variations.
1. fixed a bug that the app crashed when no variations.
6.1.0
Apr 27, 2023
This is a bug-fixed version.
1. improved display of position info bar on iPhone.
2. fixed a bug that the default engine crashed in endgame.
3. fixed a bug that synthesized voices did not work on iOS/iPadOS 16.4.
1. improved display of position info bar on iPhone.
2. fixed a bug that the default engine crashed in endgame.
3. fixed a bug that synthesized voices did not work on iOS/iPadOS 16.4.
6.0.1
Mar 28, 2023
This is a bug-fixed version.
1. fixed a bug that KataGo engine might crash.
2. fixed a bug that the default engine might crash on old devices.
1. fixed a bug that KataGo engine might crash.
2. fixed a bug that the default engine might crash on old devices.
6.0.0
Mar 23, 2023
The following issues are updated in this version.
1. updated KataGo to v1.12.4.
2. added indices of primary variation.
3. replaced KataGo 40 block weight with brand-new 18 block NBT weight.
1. updated KataGo to v1.12.4.
2. added indices of primary variation.
3. replaced KataGo 40 block weight with brand-new 18 block NBT weight.
5.18.0
Feb 18, 2023
This version includes both bugfix and new features.
1. added position metrics in study mode
2. enables to set batch size or number of threads for each size of weights.
3. enables to disable mouse hover feature.
4. workaround that KataGo may mis-estimate final score after OS update.
5. fixed a bug that pulling down and up the control center prevent the engine to resume.
1. added position metrics in study mode
2. enables to set batch size or number of threads for each size of weights.
3. enables to disable mouse hover feature.
4. workaround that KataGo may mis-estimate final score after OS update.
5. fixed a bug that pulling down and up the control center prevent the engine to resume.
5.17.0
Sep 7, 2022
This is an improved version.
1. modified to start drag & drop for changing the position of the previous move by long press.
2. modified the time to recognize long press from 0.5 seconds to 1.5 seconds.
3. added sound effects for canceling moves and starting position changes.
4. set cache size of KataGo according to device physical memory.
1. modified to start drag & drop for changing the position of the previous move by long press.
2. modified the time to recognize long press from 0.5 seconds to 1.5 seconds.
3. added sound effects for canceling moves and starting position changes.
4. set cache size of KataGo according to device physical memory.
5.16.1
Aug 23, 2022
This is a bug-fixed version.
1. fixed a bug that a user could not cancel the latest move.
2. fixed a bug that history of winrate did not clear after changing a previous move.
1. fixed a bug that a user could not cancel the latest move.
2. fixed a bug that history of winrate did not clear after changing a previous move.
5.16.0
Aug 20, 2022
This is a version that a convenient functionality is added.
1. In study mode, you can change the place of the previous move by dragging the stone.
2. supported that some SGF files with invalid PL.
3. updated KataGo engine to 1.11.0.
4. updated KataGo weight to kata1-b40c256-s11840935168-d2898845681.
1. In study mode, you can change the place of the previous move by dragging the stone.
2. supported that some SGF files with invalid PL.
3. updated KataGo engine to 1.11.0.
4. updated KataGo weight to kata1-b40c256-s11840935168-d2898845681.
5.15.4
Nov 10, 2021
This is a bug-fixed version.
1. fixed a bug that the app crashes when reading an SGF file. This issue was introduced in the version 5.15.3 by the mistake of refactoring.
1. fixed a bug that the app crashes when reading an SGF file. This issue was introduced in the version 5.15.3 by the mistake of refactoring.
5.15.3
Nov 6, 2021
This is a bug-fixed version.
1. fixed a bug that special keys such as cursor keys did not work on iOS/iPadOS 15.
2. improved a behavior responding to a user operation when the app is suspended by space key.
1. fixed a bug that special keys such as cursor keys did not work on iOS/iPadOS 15.
2. improved a behavior responding to a user operation when the app is suspended by space key.
5.15.2
Sep 26, 2021
This is a bug-fixed version.
1. fixed a bug that the app crashed on A14/A15 devices with iOS/iPadOS 15 when you use batchSize more than 2.
1. fixed a bug that the app crashed on A14/A15 devices with iOS/iPadOS 15 when you use batchSize more than 2.
5.15.1
Sep 24, 2021
This version improves iPadOS/iOS 15 support for optional KataGo.
1. fixed a problem that KataGo ran extremely slowly on iPadOS/iOS 15 depending on devices. As a bonus, you may get performance boost on iPadOS/iOS 15.
1. fixed a problem that KataGo ran extremely slowly on iPadOS/iOS 15 depending on devices. As a bonus, you may get performance boost on iPadOS/iOS 15.
5.15.0
Sep 17, 2021
This is a bug-fixed version.
1. fixed a bug that closing the app did not suspend KataGo engine.
2. changed KataGo weights from fp16 precision to fp32 precision. The accuracy of estimations may be improved depending on the type of processor.
3. updated KataGo weight to kata1-b40c256-s10032125184-d2445637108
4. udpated SAI weight to #773.
5. improved display for small iPhone.
1. fixed a bug that closing the app did not suspend KataGo engine.
2. changed KataGo weights from fp16 precision to fp32 precision. The accuracy of estimations may be improved depending on the type of processor.
3. updated KataGo weight to kata1-b40c256-s10032125184-d2445637108
4. udpated SAI weight to #773.
5. improved display for small iPhone.
5.14.0
Aug 10, 2021
This is the improved version.
1. updated KataGo weight to kata1-b40c256-s9854456576-d2405111631.
2. updated SAI weight to #752.
3. improved the default engine to reduce blind spots.
4. optimzed several points.
1. updated KataGo weight to kata1-b40c256-s9854456576-d2405111631.
2. updated SAI weight to #752.
3. improved the default engine to reduce blind spots.
4. optimzed several points.
5.13.0
Jul 13, 2021
This version includes several improvements.
1. fixed a bug that the default engine misunderstood a situation after single pass as ended game.
2. updated SAI weight to #734.
3. tuned the default engine.
4. updated KataGo 40b weight to kata1-b40c256-s9435250176-d2296927197.
5. updated KataGo engine to v1.9.1.
6. added battle field visualization to territory visualization for KataGo.
1. fixed a bug that the default engine misunderstood a situation after single pass as ended game.
2. updated SAI weight to #734.
3. tuned the default engine.
4. updated KataGo 40b weight to kata1-b40c256-s9435250176-d2296927197.
5. updated KataGo engine to v1.9.1.
6. added battle field visualization to territory visualization for KataGo.
5.12.1
Apr 30, 2021
This is a bug fix version.
1. fixed a bug that KataGo self-play could not be stopped. This bug was introduced in 5.12.0.
1. fixed a bug that KataGo self-play could not be stopped. This bug was introduced in 5.12.0.
5.12.0
Apr 28, 2021
This is a minor updated version.
1. updated SAI weight to #695(20-block).
2. updated KataGo 40-block weight to kata1-b40c256-s7907049728-d1917596640.
3. reduced the size of the app by sharing KataGo weights for different sizes.
4. made starting KataGo engine faster.
5. fixed a bug that the app might crash when opening the settings menu.
6. supported a compressed point list in AB and AW of SGF.
7. fixed a bug that the app might open main menu after handoff.
1. updated SAI weight to #695(20-block).
2. updated KataGo 40-block weight to kata1-b40c256-s7907049728-d1917596640.
3. reduced the size of the app by sharing KataGo weights for different sizes.
4. made starting KataGo engine faster.
5. fixed a bug that the app might crash when opening the settings menu.
6. supported a compressed point list in AB and AW of SGF.
7. fixed a bug that the app might open main menu after handoff.
A Master of Go Price
Today:
$12.99
Lowest:
$11.99
Highest:
$12.99
A Master of Go FAQ
A Master of Go is available in regions other than the following restricted countries:
China
A Master of Go supports English, Japanese, Korean, Simplified Chinese, Traditional Chinese
A Master of Go contains in-app purchases. Please check the pricing plan as below:
KataGo Engine
$11.99
200 coins
$0.99
Click here to learn how to download A Master of Go in restricted country or region.
Check the following list to see the minimum requirements of A Master of Go.
iPhone
Requires iOS 12.0 or later.
iPad
Requires iPadOS 12.0 or later.
iPod touch
Requires iOS 12.0 or later.
