Program: 154309
Project: 154309
Buggy source:
/** 
 * Checks that a jump move is valid. If the move is a regular (adjacent) move, returns true.
 * @param move
 * @return True if valid jump move
 */
private boolean jumpValid(MovementMove move){
  if (!move.isJump())   return true;
  Space middleSpace;
  Space behindSpace;
  if (move.from().row() == move.to().row()) {
    assert(Math.abs(move.from().col() - move.to().col()) == 2);
    middleSpace=new Space(Math.min(move.from().col(),move.to().col()) + 1,move.from().row());
    if (getSpace(players.other(move.owner)).equals(middleSpace) && !wallIsHere(move.from(),middleSpace) && !wallIsHere(move.to(),middleSpace)) {
      return true;
    }
    return false;
  }
 else   if (move.from().col() == move.to().col()) {
    assert(Math.abs(move.from().row() - move.to().row()) == 2);
    middleSpace=new Space(move.from().col(),Math.min(move.from().row(),move.to().row()) + 1);
    if (getSpace(players.other(move.owner)).equals(middleSpace) && !wallIsHere(move.from(),middleSpace) && !wallIsHere(move.to(),middleSpace)) {
      return true;
    }
    return false;
  }
 else   if (Math.abs(move.from().row() - move.to().row()) + Math.abs(move.from().col() - move.to().col()) == 2) {
    if (getSpace(players.other(move.owner)).row() == move.from().row() && getSpace(players.other(move.owner)).col() == move.to().col() || getSpace(players.other(move.owner)).col() == move.from().col() && getSpace(players.other(move.owner)).row() == move.to().row()) {
      middleSpace=getSpace(players.other(move.owner));
      if (wallIsHere(middleSpace,move.to()))       return false;
      try {
        behindSpace=new Space(2 * middleSpace.col() - move.from().col(),2 * middleSpace.row() - move.from().row());
      }
 catch (      RuntimeException e) {
        return true;
      }
      return wallIsHere(middleSpace,behindSpace);
    }
 else     return false;
  }
  return false;
}

Fixed version (ground truth):
/** 
 * Checks that a jump move is valid. If the move is a regular (adjacent) move, returns true.
 * @param move
 * @return True if valid jump move
 */
private boolean jumpValid(MovementMove move){
  if (!move.isJump())   return true;
  Space middleSpace;
  Space behindSpace;
  if (move.from().row() == move.to().row()) {
    assert(Math.abs(move.from().col() - move.to().col()) == 2);
    middleSpace=new Space(Math.min(move.from().col(),move.to().col()) + 1,move.from().row());
    if (getSpace(players.other(move.owner)).equals(middleSpace) && !wallIsHere(move.from(),middleSpace) && !wallIsHere(move.to(),middleSpace)) {
      return true;
    }
    return false;
  }
 else   if (move.from().col() == move.to().col()) {
    assert(Math.abs(move.from().row() - move.to().row()) == 2);
    middleSpace=new Space(move.from().col(),Math.min(move.from().row(),move.to().row()) + 1);
    if (getSpace(players.other(move.owner)).equals(middleSpace) && !wallIsHere(move.from(),middleSpace) && !wallIsHere(move.to(),middleSpace)) {
      return true;
    }
    return false;
  }
 else   if (Math.abs(move.from().row() - move.to().row()) + Math.abs(move.from().col() - move.to().col()) == 2) {
    if (getSpace(players.other(move.owner)).row() == move.from().row() && getSpace(players.other(move.owner)).col() == move.to().col() || getSpace(players.other(move.owner)).col() == move.from().col() && getSpace(players.other(move.owner)).row() == move.to().row()) {
      middleSpace=getSpace(players.other(move.owner));
      if (wallIsHere(middleSpace,move.from()))       return false;
      if (wallIsHere(middleSpace,move.to()))       return false;
      try {
        behindSpace=new Space(2 * middleSpace.col() - move.from().col(),2 * middleSpace.row() - move.from().row());
      }
 catch (      RuntimeException e) {
        return true;
      }
      return wallIsHere(middleSpace,behindSpace);
    }
 else     return false;
  }
  return false;
}