Hactar Go

Hactar Go is an application for Android.

"Hactar Go works fully on Android 7.1 and later phones and tablets."

Hactar Go features:

Play

• Play go in 9x9, 13x13 and 19x19 boards.
• About 5 dan at 9x9 and 3dan in 19x19 (pachi -based engine)
• Pro -level engine at 19x19 as additional subscription service (or fixed-time purchase). Engine is based on katago.
• Play capture go, and capture 3 stones (and capture 5 unlocked later when all capture 3 levels are won).
• Continue game after interruption.
• Review played games.

Ai Analysis

• Ai Analysis part of SGF editor
• Analysis with 40-block katago running in cloud ( https://gowrite.net/blog/hactar-go-analysis/).
• Shows winning % and point difference over whole game.
• For next move shows points lost and iterations analyzed.
• Selecting a next move position shows best continuation.
• Maximum analysis iterations depend on subscriptions.

Tsumego

• Over 400 problems, including correct answer and multiple wrong variations.
• Random color and rotation for problems.
• Easily add own tsumego collections, supports all common formats (VW, TR, BM, RIGHT&WRONG). Just few touches to download over 400 gogameguru.com problems!
• Optionally disable color randomization and rotation.
• Widget to show current problem in homescreen.

Search games

• List most recent professional games.
• Search games based on position or player.
• Search games stored in device.
• Search games from internet. Search covers over 90000 pro games and over 110000 amateur games.

SGF Viewer / editor

• View and edit SGF files. Opens files directly from browser.
• Multiple game list formats. Preview files when opening.
• View UGI and GIB formats and convert them to SGF.
• Supports all normal SGF features.
• Score estimator to estimate / count score.