3 #ifndef FEATURE_POSITION_H 
    4 #define FEATURE_POSITION_H 
   56         return abs(move.
to().
x() - king.
x());
 
   64         return abs(move.
from().
x() - king.
x());
 
   93         int diff = move.
to().
y() - king.
y();
 
  104         int diff = move.
from().
y() - king.
y();
 
  117         const int y = 
makeY(attack, state, move) + 8;
 
  127       static const std::string 
name(
int x);
 
  133         int mx = move.
to().
x();
 
  149       static const std::string 
name(
int y);
 
  155         int my = move.
to().
y();