Siff, Boris




Ratings

Year       Rank    Edo    Dev.   Games 
1932  1220  2082 (105) 1
1933  1236  2084 (99) 3
1934  1312  2075 (98) 2
1935  1344  2077 (101) 0
1936  1299  2080 (103) 0
1937  1225  2082 (104) 0
1938  1212  2085 (105) 0
1939  1121  2087 (105) 0
1940  984  2089 (104) 0
1941  947  2092 (103) 0
1942  876  2094 (101) 0
1943  837  2097 (98) 0
1944  829  2099 (95) 0
1945  838  2102 (90) 0
1946  821  2104 (85) 0
1947  704  2107 (78) 0
1948  531  2109 (69) 16

Rating table notes

Biographical data
Name: Siff, Boris  
Born:
Died:
 
References
Books
   Di Felice, Chess Results, 1931-1935, page 205
   Di Felice, Chess Results, 1947-1950, page 478
   Gaige, Chess Personalia, page 391
   Lahde, Isaac Kashdan, page 308
Periodicals
   [BDE], vol. 91, no. 97, 7 Apr. 1932, page 26
   [BDE], vol. 92, no. 123, 4 May 1933, page 25

Tournament data

New York 1932 (12)     Marshall Club - Empire City Club Match    
  Siff, B. - Marshall, F.J.     0.5 - 0.5    
New York 1933 (11)     Manhattan Club - Empire City Club Match    
  Siff, B. - Kashdan, I.I.     0.5 - 0.5    
New York 1933 (12)     Marshall Club - Empire City Club Match    
  Siff, B. - Grossman, N.     0 - 1    
Philadelphia 1933     Manhattan Club - Philadelphia Match    
  Siff, B. - Morris, H.R.     0.5 - 0.5    
New York 1934 (5)     Manhattan Club Championship     1  /  3
New York 1948 (1)     Manhattan Club Master Tournament     2.5  /  7
New York 1948 (2)     Manhattan Club Championship     3.5  /  9

Player information updated: 11 Jun. 2026