Pinchas was born to his parents Yehiel and Yona Cohen on 1932 in Cairo, the youngest in a family of nine. His parents, born in Yemen, moved to Egypt for a period of time, then made aliyah in 1933 to Tel Aviv’s Kerem HaTeimanim. It was a Religious Zionist family. Most of their income was from the mother, and their financial situation was difficult. Pinchas studied in a Talmud Torah, but after the death of his parents, he moved to Kfar Hayim at age fourteen, under the aegis of the Youth Aliyah’s training program. He stayed there from 1946 to 1948. He was adopted by the Belinsky family, members of the settlement who were deeply tied and dedicated to their land. They inculcated in him a deep love for the soil of the Land of Israel.

As an adolescent, he worked and studied in the village. He helped his adoptive family by working in the field, barn and coop. Pinchas was a broad-shouldered youth, tall and straight and smiling, who loved sports, riding and swimming in particular. He was a member of HaNoar HaOved in the settlement and received military training through the Gadna: hand-to-hand combat, sliding down a rope from a water tower, signals and firearms.

In conversations with his close friends, he expressed his inclinations towards the underground activities of Lehi. Pinchas — younger brother of Lehi activist Aaron Cohen, who was sent by the Hagana to Egypt; and of Farchi, who died on Hanukkah 5709 with the 8^th Brigade at Auja al-Hafir — carried on his brothers’ tradition faithfully. He joined Lehi and Neve Yair in the western Negev, as backup from the younger generation of Lehi.

Pinchas was killed on duty as a Hebrew agricultural worker in the fields of Neve Yair. On  December 21,1949, as he turned seventeen, the tractor he was driving hit a mine laid by Arab attackers.

He was buried in the Nahalat Yitzhak Cemetery.