A. Feinstein - Biography
A. Feinstein (? – ?) was an Estonian chess master.
Feinstein lived in Reval before World War I, and played in several tournaments there. He took 3rd in 1903 (Sohn won), tied for 7-8yh in 1904 (Bernhard Gregory won), shared 1st with Sohn in 1905, tied for 2nd-3rd, behind Khmelevsky, in 1909, and won in 1910 (unofficial Estonian chess championship).