There was an instant--Rudolf saw it in his eyes and dwelt on it when he lightly painted the scene for me--when there dawned on Rupert of Hentzau the knowledge that he could not break down his enemy’s guard. Surprise, chagrin, amusement, or something like it, seemed blended in his look. He could not make out how he was caught and checked in every effort, meeting, it seemed, a barrier of iron impregnable in rest. His quick brain grasped the lesson in an instant. If his skill were not the greater, the victory would not be his, for his endurance was the less. He was younger, and his frame was not so closely knit; pleasure had taken its tithe from him; perhaps a good cause goes for something. Even while he almost pressed Rudolf against the panel of the door, he seemed to know that his measure of success was full. But what the hand could not compass the head might contrive. In quickly conceived strategy he began to give pause in his attack, nay, he retreated a step or two. No scruples hampered his devices, no code of honor limited the means he would employ. Backing before his opponent, he seemed to Rudolf to be faint-hearted; he was baffled, but seemed despairing; he was weary, but played a more complete fatigue. Rudolf advanced, pressing and attacking, only to meet a defence as perfect as his own. They were in the middle of the room now, close by the table. Rupert, as though he had eyes in the back of his head, skirted round, avoiding it by a narrow inch. His breathing was quick and distressed, gasp tumbling over gasp, but still his eye was alert and his hand unerring. He had but a few moments’ more effort left in him: it was enough if he could reach his goal and perpetrate the trick on which his mind, fertile in every base device, was set. For it was towards the mantelpiece that his retreat, seeming forced, in truth so deliberate, led him. There was the letter, there lay the revolvers. The time to think of risks was gone by; the time to boggle over what honor allowed or forbade had never come to Rupert of Hentzau. If he could not win by force and skill, he would win by guile and by treachery, to the test that he had himself invited. The revolvers lay on the mantelpiece: he meant to possess himself of one, if he could gain an instant in which to snatch it. The device that he adopted was nicely chosen. It was too late to call a rest or ask breathing space: Mr. Rassendyll was not blind to the advantage he had won, and chivalry would have turned to folly had it allowed such indulgence. Rupert was hard by the mantelpiece now. The sweat was pouring from his face, and his breast seemed like to burst in the effort after breath; yet he had enough strength for his purpose. He must have slackened his hold on his weapon, for when Rudolf’s blade next struck it, it flew from his hand, twirled out of a nerveless grasp, and slid along the floor. Rupert stood disarmed, and Rudolf motionless.