Opening Classification :
ECCO D3x-D5x Classification Codes

The moves shown below are the moves required to generate the ECCO label. I have tried my best to translate them to English with official WXF nomenclature. A million thanks must be expressed to Mr Gerog Jeiter for helping me proof read them and informing me of the various corrections.

D) Same Direction Cannons and Opposite Direction Cannons (inclusive of halfway Opposite Direction Cannons )
 顺炮局和列炮局(包括半途列炮)   
      
http://www.xqbase.com/ecco/ecco_d.htm

D0x Central Cannon vs Left Cannon Blockade with Halfway Opposite Direction Cannon Variation     
        中炮对左炮封车转列炮 
       ( cc vs lt c blockade )
       1. C2=5   H8+7        2. H2+3   R9=8
       3. R1=2   C8+4        4. P3+1    C2=5
    This is the basic formation for D31-D36; D30 not included. 
D30 Central Cannon without 3rd Pawn Advancement vs Left Cannon Blockade with Halfway Opposite Direction Cannon Variation 
        ( cc NO 3pa vs lt c blockade hodc )
        中炮不进三兵对左炮封车转列炮      
        1.  C2=5     H8+7  
         l.    ...        R9=8 
       m.    ...        C8+4
        n.    ...        C2=5  ( Black may move P3+1/P7+1 before C2=5 EXCLUDING D31-D36 )  

D31 Central Cannon with 3rd Pawn Advancement (Others) vs Left Cannon Blockade with Halfway Opposite Direction Cannon Variation 
        ( cc 3pa vs lt c blockade hodc )
        中炮进三兵(其他)对左炮封车转列炮        
        5.    ...   

D32 Central Cannon with 3rd Pawn Advancement Right Riverbank Horse vs Left Cannon Blockade with Halfway Opposite Direction Cannon Variation 
        ( cc 3pa rt rbh vs lt c blockade hodc )
        中炮进三兵对左炮封车转列炮——红右马盘河        
        5.  H3+4     

D33 Central Cannon with 3rd Pawn Advancement 7th File Horse vs Left Cannon Blockade with Halfway Opposite Direction Cannon Variation 
        ( cc 3pa 7fh vs lt c blockade hodc )
        中炮进三兵对左炮封车转列炮——红七路马        
        5.  H8+7     

D34 Central Cannon with 3rd Pawn Advancement Lt Side Horse vs Left Cannon Blockade with Halfway Opposite Direction Cannon Variation 
        ( cc 3pa lt side h vs lt c blockade hodc )
        中炮进三兵对左炮封车转列炮——红左边马        
        5.  H8+9

D35 Central Cannon with 3rd Pawn Advancement Cannon attacking horse variation  vs Left Cannon Blockade with Halfway Opposite Direction Cannon Variation 
        ( cc 3pa cannon attack horse variation vs lt c blockade hodc )
        中炮进三兵对左炮封车转列炮——红进炮打马        
        5.  C8+5
 
D36 Central Cannon 3rd Pawn Advancement with Double headed snake pawn formation vs Left Cannon Blockade with Halfway Opposite Direction Cannon Variation 
        ( cc 37pa vs lt c blockade hodc )
        中炮进三兵对左炮封车转列炮——红两头蛇        
        5.  P7+1

D37-D39 No Labels Yet.

D4x Central Cannon vs Left 3 Step Tiger with Opposite Direction Cannons Variation             
        中炮对左三步虎转列炮   
       ( cc vs lt 3st odc )
Basic Formation:
      1. C2 =5 H8+7   
      l.  H2+3  R9=8
    m.    ...      C8=9
     n.    ...      C2=5 ( Black may play R8+5/P3+1/P7+1 in any logical order before moving C2=5 )
All the other moves in the different variations continue from here.
      
D40 Central Cannon (Others) vs Left 3 Step Tiger with Opposite Direction Cannons Variation    
        ( cc vs lt 3st odc )
        中炮(其他)对左三步虎转列炮       
        2.   ...         ...           ( EXCLUDING D41-D46 )

D41 Central Cannon with 5th Pawn Advancement vs Left 3 Step Tiger Cross Riverbank Chariot and Opposite Direction Cannons Variation    
        ( cc 5pa vs lt 3st crbr odc )
        中炮进中兵对左三步虎骑河车转列炮       
        m.   ...      R8+5
         n.  P5+1 (red may move H2+3/H8+7/P3+1/P7+1 before P5+1)  C2=5

D42 Central Cannon with Left Filed Chariot vs Left 3 Step Tiger with Opposite Direction Cannons Variation    
        ( cc lt fr  vs lt 3st odc )
       中炮对左三步虎转列炮——红左直车            
         n.  R9=8     ...  (red may move H2+3/H8+7/P3+1/P7+1 before R9=8)  C2=5

D43 Central Cannon with Double Headed Snake Pawn Formation vs Left 3 Step Tiger with Opposite Direction Cannons Variation    
        ( cc 37pa vs lt 3st odc )
       中炮对左三步虎转列炮——红两头蛇              
         m.  P3+1     ...     ,  n. P7+1  ..... OR
         m.  P7+1     ...     ,  n. P3+1  ( red may move H8+7 before playing this formation)

D44-D49 No Labels Yet

D5x Opposite Direction Cannons (Including Reserved Opposite Direction Cannons)     
        中炮对列炮(包括后补列炮)   
       ( odc ) 

D50 Opposite Direction Cannons    
        ( odc )
        中炮对列炮          
        1. C2=5      C2=5 

D51 Central Cannon (others) vs Reserved Opposite Direction Cannons     
        ( cc vs reserved odc )
        中炮(其他)对后补列炮           
        1. C2=5       H8+7
        n.   ...         C2=5  (Black may move R9=8/P7+1/P3+1 in any logical order before C2=5, EXCLUDING D52-D55 )

D52 Central Cannon with Right Filed Chariot (others) vs Reserved Opposite Direction Cannons     
        ( cc rt fr vs reserved odc )
        中炮右直车(其他)对后补列炮            
        1. C2=5       H8+7 
       m.   ...          C2=5  (Black may move R9=8/P7+1/P3+1 in any logical order before C2=5, EXCLUDING D53-D55 )
       n.  R1=2  ( Red may move H2+3/H8+7/P3+1/P7+1 before this move in any logical order, EXCLUDING D53 and D55 )   
 
D53 Central Cannon with Right Pawn Ranked Chariot vs Reserved Opposite Direction Cannons     
        ( cc rt prc vs reserved odc )
        中炮过河车对后补列炮                  
        1. C2=5       H8+7 
        l.    ...          C2=5  (Black may move R9=8/P7+1/P3+1 in any logical order before C2=5, EXCLUDING D54-D55 ) 
      m.  R1=2         ...
       n.  R2+6        ...( Red may move H2+3/H8+7/P3+1/P7+1 before this move in any logical order )

D54 Central Cannon with Left Filed Chariot vs Reserved Opposite Direction Cannons     
        ( cc lt fr vs reserved odc )
        中炮左直车对后补列炮             
        1. C2=5       H8+7 
       m.   ...          C2=5  (Black may move R9=8/P7+1/P3+1 in any logical order before C2=5, EXCLUDING D55 )
       n.  R9=8  ( Red may move H2+3/H8+7/P3+1/P7+1 before this move in any logical order, EXCLUDING D55 )   

D55 Central Cannon with Double Filed Chariot vs Reserved Opposite Direction Cannons     
        ( cc 2fr vs reserved odc )
        中炮双直车对后补列炮             
       m. R9=8    ...    ,   n. R1=2 ... OR
       m. R1=2    ...    ,   n. R9=8   ( Red may move H2+3/H8+7/P3+1/P7+1 before this move in any logical order )   

D56-D59 No Labels Yet

Click here to go back to the ECCO introductions page. 
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First Created: Sometime in Nov 2011
Last updated: 28th Oct 2012
Acknowledgments:
1. Georg Jeiter from Germany has proofread this page and a few typing mistakes have been corrected. Thanks!
References:
1. the website whose url is given above

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