And they were playing that game with great skill and knowledge, and Finn pressed Oisin so hard that he had no move to make but the one, and Finn said: "There is one move would win the game for you, Oisin, and I defy all that are with you to show you that move." Then Diarmuid said up in the tree where he was, and no one heard him but Grania: "It is a pity you be in straits, and without myself to show you that move." "It is worse off you are yourself," said Grania, "to be in the bed of the Surly One of Lochlann in the top of the quicken-tree, and the seven battalions of the Fianna round about it to take your life."
But Diarmuid took a berry of the tree, and aimed at the one of the chessmen that ought to be moved, and Oisin moved it and turned the game against Finn by that move. It was not long before the game was going against Oisin the second time, and when Diarmuid saw that he threw another berry at the chessman it was right to move, and Oisin moved it and turned the game against Finn in the same way. And the third time Finn was getting the game from Oisin, and Diarmuid threw the third berry on the man that would give the game to Oisin, and the Fianna gave a great shout when the game was won. Finn spoke then, and it is what he said: "It is no wonder you to win the game, Oisin, and you having the help of Osgar, and the watchfulness of Diorraing, and the skill of Lugaidh's Son, and the teaching of the grandson of Duibhne with you." "That is a great sign of jealousy in you, Finn," said Osgar, "to think Diarmuid would stop in this tree, and you so near him." "Which of us has the truth, Diarmuid, grandson of Duibhne," Finn said out then, "myself or Osgar?" "You never lost your good judgment, Finn," said Diarmuid then; "and I myself and Grania are here, in the bed of the Surly One of Lochlann." Then Diarmuid rose up and gave three kisses to Grania in the sight of Finn and the Fianna. And a scorching jealousy and a weakness came on Finn when he saw that, and he said: "It was worse to me, Diarmuid, the seven battalions of the Fianna to see what you did at Teamhair, taking away Grania the night you were yourself my guard. But for all that," he said, "you will give your head for the sake of those three kisses."
With that Finn called to the four hundred paid fighting men that were with him that they might make an end of Diarmuid; and he put their hands into one another's hands around that quicken-tree, and bade them, if they would not lose their lives, not to let Diarmuid pass out through them. And he said that to whatever man would take Diarmuid, he would give his arms and his armour, and a place among the Fianna of Ireland.
Then one of the Fianna, Garbh of Slieve Cua, said it was Diarmuid had killed his own father, and he would avenge him now, and he went up the quicken-tree to make an end of him.
Now, about that time it was made known to Angus Og, in Brugh na Boinne, the danger Diarmuid was in, and he came to his help, unknown to the Fianna. And when Garbh of Slieve Cua was coming up the tree, Diarmuid gave him a kick of his foot, and he fell down among the hired men, and they struck off his head, for Angus Og had put the appearance of Diarmuid on him. But after he was killed, his own shape came on him again, and the Fianna knew that it was Garbh was killed.
Then Garbh of Slieve Crot said it was Diarmuid had killed his father, and he went up to avenge him, and the same thing happened. And in the end all the nine Garbhs, of Slieve Guaire, and Slieve Muice, and Slieve Mor, and Slieve Lugha, and Ath Fraoch, and Slieve Mis and Drom-mor, went trying to take Diarmuid's life and lost their own lives, every one of them having the shape and appearance of Diarmuid when he died. And Finn was very sorry and discouraged when he saw that these nine men had come to their death.
Then Angus said he would bring away Grania with him. "Do so," said Diarmuid; "and if I am living at evening I will follow you." Then Angus said farewell to Diarmuid, and he put his Druid cloak about Grania and about himself, and they went away in the safety of the cloak, unknown to Finn and the Fianna, till they came to Brugh na Boinne.
Then Diarmuid, grandson of Duibhne, spoke, and it is what he said: "I will come down to you, Finn, and to the Fianna. And I will do death and destruction on you and on your people, for I am certain your mind is made up to give me no rest, but to bring me to my death in some place. And I have nowhere to go from this danger," he said, "for I have no friend or comrade under whose protection I could go in any far part of the great world, for it is often I fought against the men of the great world for love of you. For there never came battle or fight, danger or trouble on you, but I would go into it for your sake and the sake of the Fianna; and not only that, but I would fight before you and after you. And I give my word, Finn," he said, "you will pay hard for me, and you will not get me as a free gift." "It is the truth Diarmuid is speaking," said Osgar, "and give him forgiveness now, and peace." "I will not do that," said Finn, "to the end of life and time; and he will not get peace or rest for ever till I get satisfaction from him for every reproach he has put on me." "It is a great shame and a great sign of jealousy you to say that," said Osgar. "And I give the word of a true champion," he said, "that unless the skies come down upon me, or the earth opens under my feet, I will not let you or any one of the Fianna of Ireland give him cut or wound; and I take his body and his life under the protection of my valour, and I will keep him safe against all the men of Ireland." "Those are big words you have, Osgar," said Goll then, "to say you would bring a man away in spite of all the men of Ireland." "It is not you will raise them up against me, Goll," said Osgar, "for none of them would mind what you would say." "If that is what you are saying, you champion of great fights," said Goll, "let us see now what you can do." "You will have to go through with the fight you have taken on yourself," said Corrioll, son of Goll, in a loud voice. And Osgar answered him fiercely: "If I do I will shorten your bones, and your father's bones along with them. And come down now, Diarmuid," he said, "since Finn has no mind to leave you in peace, and I promise on my body and my life there will no harm be done to you to-day."
Then Diarmuid stood up on a high bough of the boughs of the tree, and he rose with a light leap by the shaft of his spear, and lit on the grass far beyond Finn and the Fianna. And he himself and Osgar went towards one another, in spite of the Fianna that went between them, and Diarmuid struck down those that were in his way; and as to Osgar, the throwing of his spears as he scattered the Fianna was like the sound of the wind going through a valley, or water falling over flag-stones. And Conan, that was always bitter, said: "Let the sons of Baiscne go on killing one another." But Finn, when he saw Diarmuid was gone from him, bade them put their weapons up, and turn back again to Almhuin.
And he sent those of his men that could be healed to places of healing, and the nine Garbhs, and the others of his men that were killed, he put into wide-sodded graves. And it is tired and downhearted and sorrowful he was after that, and he made an oath he would take no great rest till he would have avenged on Diarmuid all that he had done.