Go Crash Course app for iPhone and iPad

More than 20,000 Go questions, includingBasic Capture,Capture Direction,Capture,Escape,Escape Direction,Capturing Race,Connect,Cut,Ladder,Capturing by Atari,Capturing by Surround,Double Atari,Wedge Atari,Connect and Die,Net,Snapback,Throw-in Atari,Live,Nakade,Seki,Three Stones,Bent Four in The Corner,Five Stones,Six Stones,Symmetrical Position,Eye Kills No Eye,Squeeze,Opponents Eye,Oshitsubushi,Double Shortage of Liberties,Throw in,Diagonal,Pincer,Tigers Mouth,Hane,Wedge,Atekomi,Cut,Geta,Bridge Under,Sagari,Placement,Jump,Under the Stones,Sekito Shibori,Attack,Blind Spot,Cranes Nest,Shaping,Tripod Group,J Group,Carpenters Square,Shape,Life and Death,Tesuji ,Composite Training.