Positive departure/arrival effects for helpmates
Motivation/purpose of the move Tactic / manner of achieving the effect
Departure Arrival
Line opening Square vacation Withdrawal Interfe-rence Self-block Capture Active sacrifice Promotion Arrival Critical move Anticritical move
Allowing the move of a piece                      
Unpin     + +              
Self-unpin     + +   +          
Allowing the move of a line-mover (line is blocked) +           +        
Allowing the move of a piece (arrival square is blocked)   +       +          
Allowing a capture by a pawn             +        
Creating a flight     + +   +          
Preventing the getting out of check                      
Pinning +               +    
Self-pinning +         +     +    
Unguarding the mating square or line     + +   + +        
Guarding the black king's field +               +    
Preventing the move of the bK         +            
Attacking the king and preparing the attack                      
Attacking the black king (checkmate) +               +    
White battery creation +         +     +    
Anticipatory mating line vacation +                    
Move of the bK to the final square                 +    
Defence from check                      
Getting out of check     + +   +          
Preventing the check     + +   +          
Avoiding negative effect                      
Waiting (tempo)                 +    
Preventing the zugzwang (tempo)                 +    
Hideaway                 +    
Intereference avoidance                     +
Preventing the capture of a piece     +                
Part of the maneuver                      
Preparing of white battery +         +     +    
Preparing of pin +         +     +    
Preparing of line-opening (annihilation capture)           +          
Last piece move before mating                 +    
Intermediate move of the trip                 +    
Motivations for the critical move                      
Preparing a white battery (Indian)                   +  
Preparing a flight                   +  
Preparing an unguard                   +  
Preparing a pin                   +  
Preparing a flight and attack of the bK (Maslar)                   +  
Motivations for promotion                      
Promotion to mating / guarding / pinning / self-blocking piece               +      
Viktoras Paliulionis
viktpal@gmail.com