He lived most of his life in Moscow after World War II, in which he lost both legs fighting in the Battle of Stalingrad.

Khasin played in five USSR Championship finals from 1956 to 1965.

FIDE awarded him the title of International Master in 1964 and later the title of Grandmaster of Correspondence Chess in 1973.

A variation of the Nimzo-Indian Defense bears his name: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 0-0 5.Bd3 d5 6.Nf3 c5 7.0-0 Nc6 8.a3 Bxc3 9.bxc3 <Qc7>.

"A veteran of the old Soviet school, Abram Khasin (born in the Ukraine in 1923) is a FIDE IM and ICCF GM (since 1972). After being seriously wounded at the battle of Stalingrad, Khasin worked as a chess coach to many leading players. He won several GM-level CC tournaments."

Source: Timothy David Harding in his book "64 GREAT CHESS GAMES" - Masterpieces of Postal and Email Chess

[Event "?"]
[Site "Moscow"]
[Date "1956.??.??"]
[Round "?"]
[White "Petrosian, Tigran V."]
[Black "Khasin, Abram"]
[Result "0-1"]
[ECO "C81"]
[PlyCount "78"]

"Like most of my peers, my childhood and adolescence were difficult. At the age of nine, I lost my father but survived the famine in Kyiv.

I don't remember how old I was when I learned to play chess by watching my older brother play ... In the autumn of 1939, I signed up for the section of the Kyiv Palace of Pioneers and Schoolchildren. I had to do a little work, because starting from zero, I constantly gained rank (category) after rank.

I still remember the lecture by master A.M. Konstantinopolsky “The Spanish Opening”. But soon I was already taking part in the analysis together with David Bronstein, who by that time had fulfilled the master's norm, Anatoly Bannik, Isaak Lipnitsky and others. I progressed quickly, taking 2nd place in the finals of the Pioneer Palaces championship, following Bronstein.

Already in the summer of 1941, being a first-class student with one candidate's norm, I participated in the final of the Kyiv championship among the adults. We played in the evenings, and during the day I worked at the factory as an apprentice turner. After work, we took part in pre-conscription training. There were also night shifts (after the game)...

During the war, I served as a mortar man. After being seriously wounded in 1942 near Stalingrad and having both legs amputated, I returned to chess in 1944. I became a candidate master only in 1947 at the age of 24! While studying at the Institute of Foreign Languages, I worked a little as a chess coach at various institutes.

In 1949, I reached the semi-finals of the USSR Championship for the first time. Whilst playing in Moscow, I took my exams at the same time. A year later, in the next semi-final, I fulfilled the norm of the USSR Master of Sports. In the 1950s I played quite successfully and was among the twenty strongest masters. I competed in the USSR championships five times, but I never left my job. I worked for eleven years in a school as an English teacher..."