Go365 app icon

Go365: A Tsumego Every Day

One tsumego a day, from 1 move to 7 moves. 4,000 Go life-and-death problems that you play out on the board, with White replying automatically.

Download on the App StoreDownload on Google Play

What is Go365?

Tsumego is the life-and-death problem of Go, the game also known as baduk or weiqi. A group of stones is in danger, and you have to find the move that kills it or the move that saves it. Go players train their reading this way, usually with a small book and the answer printed on the next page.

Go365 puts 4,000 of these problems on your phone, 1,000 each at 1, 3, 5 and 7 moves. You always play Black and move first. Instead of reading the answer, you play it. You can put a stone anywhere, right or wrong, and White replies automatically, so a wrong idea fails on the board the way it would in a real game.

It works like Shogi365, our tsume shogi app: one problem a day, a streak to keep, and a few minutes that fit on a train or before bed.

Screenshots

iPhone

Go365 hard 5-move tsumego, Black to kill White in the corner, with the moves played shown under the boardGo365 difficulty picker: Easy 1 move, Medium 3 moves, Hard 5 moves, Expert 7 movesGo365 home screen with a 365 day streak, a week of checkmarks and the Daily Challenge button

iPad

Go365 on iPad: a hard 5-move life-and-death problem with retry and hint buttonsGo365 on iPad: choosing a difficulty from 1 move to 7 movesGo365 on iPad: the home screen with the streak and the daily challenge

What's Inside

4,000 Problems in Four Lengths

Easy is 1 move, Medium 3 moves, Hard 5 moves, Expert 7 moves, counting the moves of both sides.

  • Exactly one correct first move
  • Black succeeds against every White answer
  • Corner shapes on the 19x19 board, with only the part that matters shown

Kill or Live

There are two kinds of problem, and the goal is shown above the board, so you always know what you are trying to do.

  • Black to play and kill: capture the white group
  • Black to play and live: give the black group two eyes

Play It Out, Don't Peek

The board keeps the rules of Go and plays White for you, so your reading is tested the way it is in a game.

  • Place a stone on any legal point, right or wrong
  • White replies automatically. If your move does not work, White shows you why
  • A line that White refutes fails. Try again from the start, up to three times
  • Suicide and retaking a ko at once are refused. Winning a ko does not count as the answer
  • After solving, Review lets you step through the line one move at a time from the starting position

The Daily Challenge

Everyone in the world gets the same problem each day, at 1, 3 or 5 moves. Solve it to grow your streak, and the home screen shows your last seven days.

  • Reminders: pick the days of the week and a time

Hints That Leave the Move to You

Stuck? A hint makes the point to play blink. You still place the stone yourself. You start with ten hints and earn another each time you solve the daily challenge.

Small Things That Matter

The details you would want for a few quiet minutes with a board.

  • Stats per difficulty: solved count, best time, average time
  • Optional tap twice to play, so a slip of the finger never costs a problem
  • Optional board coordinates
  • Light and dark themes
  • An interrupted problem resumes where you left it
  • Works offline, with no account and no ranking. Your progress stays on your device

Free on this site

Free and Remove Ads

Free

  • โœ“All 4,000 problems at every difficulty
  • โœ“The daily challenge and streaks
  • โœ“Hints, stats and every setting
  • โœ“Ads, with an optional ad to earn a hint or refill retries

Remove Ads

  • โœ“Everything in Free
  • โœ“No banner or interstitial ads
  • โœ“A one-time purchase, no subscription

Remove Ads is 1,500 yen on the Japanese App Store. Prices in other regions are shown on the in-app store screen. Ads you choose to watch for a hint or to refill retries are still offered after you remove ads.

One Problem Today

Start with a 1-move problem and see how far up the ladder you get. Go365 is on the App Store and Google Play.

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