Rook against Rook 3 - the long side attack
This is a drawing technique that the weaker side can use.
It works by retreating the king to the short side, and the rook to the longer side to give checks.
|The king have to leave oposition because of threat of Ra8#. Ke8? also loses to 2. Ra8+ Kd7. Here is another plan.|
|This continues the above situation.|
|If it is only two squares of room. The long side is too short.|