Finn answered nothing to this speech, but called for a chess-board and men.[26] And he and Oisin sat down to a game; while Oscar and Mac Luga and Dering, the son of Dobar O'Baskin, sat near Oisin to advise him; for Finn played against them all. They played on for a time warily and skilfully, till at last Oisin had only one move to make; and Finn said—
"One move more would win you the game, Oisin, but I challenge all your helpers to show you that move." And Oisin was puzzled.
Dermat had been viewing the game from the beginning, where he sat among the branches; and he said, speaking to himself—
"Pity that you should be in a strait, Oisin, and I not near to advise your move."
Grania, sitting near, overheard him, and said, "It is a small matter whether Oisin win or lose a game; far worse is it for you to be in this hut, while the men of the seven battalions of the Fena are round about you, waiting to kill you."
Then Dermat, not giving heed to Grania's words, plucked a berry, and, flinging it down with true aim, struck Oisin's chess-man—the man that should be moved. And Oisin moved the man, and won the game against Finn.
The game was begun again, and it went on till it came to the same pass as before, Oisin having to make only one move to win, but that move hard to make out. And again Dermat threw a berry and struck the right man; and Oisin made the move, and won the game.
A third time the game went on, and Dermat struck the chess-man as before; and Oisin won the game the third time. Whereupon the Fena raised a mighty shout.
"I marvel not that you should win the game, Oisin," said Finn, "seeing that you have the best help of Oscar, and the zeal of Dering, and the skill of Mac Luga; and that, along with all, you have been prompted by Dermat O'Dyna."