The second method is much more dangerous than the first, because if the attacker fails to mate or recover the sacrificed material, he will inevitably reach an endgame with a significant material disadvantage, usually a losing endgame. On the other hand, a sacrifice not only opens lines in the opponent's defense, it can also force the opposing king to advance, moving away from his defensive pieces and facing the attacking ones.
This book deals exclusively with the latter type of attack. Each chapter consists of a series of games in which, after having reached a critical position, the attacker decides to sacrifice a piece to dismantle the opponent's castling. For pedagogical reasons, the games of each chapter were selected by the attacked point: f7, h7, h6 and g7. In addition, a final chapter shows a couple of examples where a thematic double sacrifice is made in squares h7 and g7.
Chess Academy