Same Direction Cannons : 
Slow Chariot vs Filed Chariot
D02 顺炮缓开车对直车
Red Uses the Double headed snake Pawn Formation

In the ancient times, the Same Direction Cannons was once of the most commonly played openings, BUT red would either choose the filed chariot and black would answer with the ranked chariot or vice versa.  And the filed chariot variation by red seemed to have a distinct upperhand.
In the latter part of the 20th century however, instead of playing the ranked chariot, black came up with P7+1 instead of the ranked chariot move of R9+1. This opened a whole new chapter to this opening. There have not been any official name for the black variation so I have coined in the slow chariot variation, in view of the tactics used.
Then in the 1990's, red started to use the slow variation as well. And this greatly increased the content of the same direction cannons openings. This is still a relatively new opening. The main idea for red playing P3+1 on the third move is develop his own horse(s) and slowly and more accurately attack black's ensuing defense.
In the following boards, I have scanned a few books and the moves recorded are basically from Master Yan Wenqing and Master Zhang Qiang's series on openings. It represents a short introduction to this opening.
The first 2 boards discuss the following variations while the last board is a summary of the first two boards so that you have an idea of where you are.
I need ideas to improve, and if you find any major mistakes, please email me at or . I need feedback!

       First variation. Black uses R1+1.                                   Second variation. Black refuses exchange.

First created : 8th November 2011
Last modified: 18th November 2011
Acknowledgements: None yet

3. Various internet sources.  
