Double-Atari  

By playing , White simultaneously ataris the two marked black stones. This is the disadvantage of playing too many diagonal plays while up against your opponent's stones.

Second Line Traps

The second line is dangerously close to the edge of the board. When playing on it, be aware that you can get chased into the wall quite easily.

Captured on the Second Line^[1]  

Captures the black stone. While extending at is technically basic instinct, Black is merely throwing stones away. Even if White plays elsewhere, Black cannot escape.

More Second Line Woes  

This kind of play shows up generally in the endgame. Despite the fact that places in atari, White captures with .

[Shortage of Liberties] Traps

No Escape  

These Stones cannot escape. When they extend with , they still have only two liberties and can then be put in atari with .

No Escape II  

These stones are similarly plagued. They cannot get out. As it turns out, these stones can't even escape if they have a stone at (see the Crane's Nest)

A Ladder and a Net

Ladder on the First Line  

The initial black stone is caught in a ladder. Unless there is a black stone on the first or second line to which the black group can connect, White can chase the line of stones to the edge of the board and capture all of them.

Net on the First Line  

White can also capture the black stones in a net with the sequence up to if there is enough room ( and can be played in any order).

Double-Hane Dilemma  

White can capture with the sequence to . Remember, however, that a cut remains at a and is the source of many tesuji.