The first puzzle is from a member of the OGS family: Leon Chen, who just released his second tsumego book. Enjoy.
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Hey folks! I’m thrilled to announce that my previous tsumego collaboration with Leon Chen 4p, Spindrift (2019), has now come with a sequel! This new book, Planet (2021), will contain 136 puzzles of varying difficulty, this time with an even wider range. It will be once again available on OGS Puzzles on February 12, which also happens to be Chinese New Year!
We will be releasing more information soon in this forum thread, but for now, enjoy the cover image and stay tuned for updates if you are in…
Read all about his generous offer in the previous thread: purchase Planet and Spindrift and get one of them for half the price.
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
1 Like
Often go puzzles have more solutions.
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Blackto play.
Interactive Puzzle
Play Go at online-go.com! | OGS
xhu98
February 16, 2021, 2:17am
323
Thanks for sharing our books! Feel free to reference more of the free preview tsumego in future posts
1 Like
Daily go vitamins
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play. White starts with E6.
Interactive Puzzle
Play Go at online-go.com! | OGS
Here are some puzzles varying from not too difficult to argh, help me.
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Extra
Triple Ko at Sensei's Library
Lys
February 20, 2021, 2:39pm
328
Atorrante:
Medium
I can’t solve this.
Spoiler
Three puzzles by Akaboshi Intetsu.
Easy White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Difficult Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
More info:
Akaboshi Intetsu (赤星 因徹, 1810 - October 19, 1835) was a Japanese professional 7 dan Go player.
Born 1810, Akaboshi rose to prominence as a student of Inoue Genan Inseki, head of the House of Inoue. By 1834, the former had attained the rank of 7 dan.
Genan desired the prestigious position of the Meijin godokoro, but was unsuccessful as a result of political manoeuvres by Honinbo Jowa. Instead, the title and office were obtained by Jowa with the aid of Hayashi Gembi, an ally within the government...
https://senseis.xmp.net/?BloodVomitingGame
1 Like
Three puzzles by two of the all time greatest players of go: Cho Chikun (Easy and Medium) and Go Seigen (Difficult).
Easy
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Medium
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Difficult
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
More
Cho Chikun 25th Honinbo Honorary Meijin (Korean: 조치훈; born June 20, 1956 in Busan, South Korea) is a professional South Korean Go player and a nephew of Cho Namchul. His total title tally of 75 titles is the most in the history of the Japanese Nihon Ki-in. Cho is the first player to hold the top three titles—Kisei, Meijin, and Honinbo—simultaneously which he did for three years in a row. Cho is the first in history to win all of the "Top 7" titles in Japan (Kisei, Meijin, Honinbo, Judan, Cho wa...
Wu Qingyuan (Chinese: 吳清源)[notes 2] (June 12, 1914 – November 30, 2014), better known by the Japanese pronunciation of his name, Go Seigen (ご せいげん), was a Chinese-born Japanese master of the game of Go. He is considered by many players to have been the greatest Go player in the 20th century.
Born on June 12, 1914 in Minhou County, Fujian Province, southeast China, Go Seigen did not start learning Go until he was nine, a relatively late age for a professional (Honinbo Dosaku first learned go at s...
2 Likes
Have fun doing the puzzles.
Easy
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Medium
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Difficult
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
1 Like
Yo, three puzzles varying from ez to omg.
Easy
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Medium
White to start.
Interactive Puzzle
Play Go at online-go.com! | OGS
Difficult
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
@jiahao.liu started an interesting collection “Life and death problems collection- intermediate”. These exercises are about 5k-1d and the author regularly adds new puzlles. The second and third puzzle are from this collection.
The first puzzle is a Hashimoto puzzle. Watch his game against Sakata Eio.
Sakata Eio(8p) vs Hashimoto Utaro(9p) - 1955-01-09 - komi: 4.5
Easy
White to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Medium
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
Difficult
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
1 Like
Okay, go nerds of all continents, let’s see what you are made of and solve these puzzles.
EASY
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
MEDIUM
Black to play.
Interactive Puzzle
Play Go at online-go.com! | OGS
DIFFICULT
Black to play. And kill the White group.
Interactive Puzzle
Play Go at online-go.com! | OGS
2 Likes
, for if you want to become a 
