Star Trek 3-D Chess Rules - Attack Board Examples

Charles Roth, 25 February 2012.       (Techblog top)

I. Introduction
Additional examples on the effects of attack boards on the Star Trek 3-D rules.  In the numbered examples below, a lower-case letter means a black piece (e.g. q = black queen) and an upper-case letter means a white piece (N = white knight). 

Numbers indicate the path that an attacking piece takes (might be able to take?) en route to the target piece (i.e. 1 = the 1st square the attacker would move to, 2 = 2nd, etc.).

II. AB's on different levels.

III. AB on the same level

  1. q x N = true 
                  1   2
            +---+---+
          q   p |
+---+---+---+---+

                      N
        +---+---+---+---+
     

  2. q x N = true. 
                  p    
            +---+---+
          q   1 |
+---+---+---+---+

                  2   N
        +---+---+---+---+
     

  3. "Split" paths?  No! q x N = false 
                  1   p
            +---+---+
          q   p |
+---+---+---+---+

                      N
        +---+---+---+---+
     

  4. Or the "other" split?  q x N = false 
                  p    
            +---+---+
          q   1 |
+---+---+---+---+

                  p   N
        +---+---+---+---+
 

IV. AB hanging below a level

  1. q x N = false 
              q   p
+---+---+---+---+
                |
            +---+---+
                      N
        +---+---+---+---+
     

  2. q x N = true 
              q   1
+---+---+---+---+
              p | 2
            +---+---+

                      N
        +---+---+---+---+
     

  3. q x N = false 
              q   p 
+---+---+---+---+
                | p 
            +---+---+
                      N
        +---+---+---+---+
     

  4. q x N = true 
              q   1  
+---+---+---+---+
              p | 2
            +---+---+
                  p   N
        +---+---+---+---+
 

V. Other interesting positions

  1. Target square is under/over an AB. 

    q x N = true 

                  1   p
            +---+---+
          q   p |
+---+---+---+---+

                  N  
        +---+---+---+---+
     

  2. q x N = true 
                  1   N
            +---+---+
                |
+---+---+---+---+


          q   p        
        +---+---+---+---+
     

  3. q x N = false 
    
  q   p        
+---+---+---+---+

          N
    +---+---+
        |
        +---+---+---+---+
     

  4. q x N = false 
                  p   N
            +---+---+
          q     |
+---+---+---+---+


        +---+---+---+---+
     

  5. "Overhang" of an AB.   q x N = false 
                  N   p
            +---+---+
                |
+---+---+---+---+
   

        +---+---+---+---+

   
                      q
                +---+---+---+---+
 

VI. Change level on main boards
Two more positions to confirm the understanding of when a piece can change levels on the main boards.
  1. q x N = true   AND  q x B = true  
    In other words, the queen follows the highest path (not above its starting level) to squares 1 and 2, and then on the very last square, may either stay on the same level and take the B, or may change level down to take the N.  (See move #2 for black in the 5.0 rules sample game.) 
              q   1   2   B
        +---+---+---+---+

   
                  p   N
                +---+---+---+---+
     

  2. q x N = false   
              q       p
        +---+---+---+---+

   
                      N
                +---+---+---+---+