Tsumego Pro

Life and death is the core of Go strategy—this app helps you master it through daily practice! With over 3,500 carefully selected life-and-death problems, we cover all levels from basic to advanced, divided into four progressive grades: Beginning, Elementary, Intermediate, and Advanced.
Our extensive problem library includes diverse tactical types: Atari, Live, Nakade, Ko, Capturing race, Throw-in, Net, Clamp, Connect along the edge, Ladder, Cut, Hane, Wedge, Kosumi, Jump, Sagari, Placement, Two-stone edge squeeze, Double shortage of liberties, Under the Stones, Seki, Vital point, Go Theory, Corner Shapes, Eyes win, Tesuji, Endgame, and more.
Newly Added Core Features
Comprehensive Go Knowledge System
Dive deep into essential Go theories with three structured modules:
Basic Go Knowledge: Master fundamental rules (board layout, stone placement, liberties, capturing, ko fights), chess equipment introduction, and endgame scoring methods .
Capturing Race Knowledge: Learn core principles like " liberties" and "eyed group kills eyeless group", plus professional counting formulas and practical tactics for different scenarios (e.g., both groups eyeless, one-eyed vs eyeless) .
Life and Death Knowledge: Understand key concepts (vital points, eye formation, seki), common corner/edge shapes, and winning strategies for survival or killing .
Professional Go Level Assessment
Get accurate evaluations of your current skill level with our standardized test. The assessment covers tactical calculation, shape recognition, and game strategy, aligning with official ranking systems (18K to 9D) . Receive detailed reports highlighting strengths and areas for improvement, plus personalized practice recommendations to target your weak points.
Daily Life-and-Death Drills
Build consistent practice habits with curated daily exercises tailored to your level. Each session focuses on specific skills (e.g., tesuji application, shape analysis) to enhance calculation speed and tactical sensitivity . Track your progress over time—regular practice of life-and-death problems is proven to be the fastest way to improve your Go strength .
Whether you’re a beginner learning the basics or an advanced player aiming for promotion, this app integrates "learning, practicing, testing, and improving" into one seamless experience—your ultimate companion for mastering the art of Go!