"Boris Blinder from Kiev, one of the strongest masters of the country, my 'eternal' adversary in many tournaments."
Thus wrote in his book "25 years at the checkers board" Zinoviy Isaakovich Zirik.

A lengthier characteristic to his "eternal" adversary gave Boris Markovich Blinder in the "Checkers World" magazine (1998, issue 4):
"Z. Zirik could count far, knew well the endgame. Wrote valuable books on endgame. Excellent theoretical knowledge. Often intentionally put himself in the zeitnot situation where his opponents get nervous, played fast and made mistakes. He played solid openings, without risks. Often thought for 30-40 minutes on his first move 11-15, putting himself into zeitnot."

B. Blinder - Z. Zirik
Kharkov, 1951

Trunk Line	Current Position	Comments
1.11-15 23-19 2.08-11 27-23 3.04-08 22-17 4.09-13 25-22 5.05-09 23-18 6.09-14 18:09 7.18-15 22:15 8.13:22 26:17 9.06:22 15:06 10.02:09 24-20 11.11-15 19:10 12.07:14 (position)		Critical Position. Moving from opening stage into the middle game white have two plans: 12....30-26 and 12....28-24. The famous theorist L. Ramm analyzed the 12...28-24 and on 13.14-18 24-19 (see Ramm Analysis). But the strongest move after 12...28-24 is 13.03-07! 24-19 14.08-11 31-27! 15.07-10 27-23 16.22-26 19-16 17.26:19 16:23 and black have a stronger game as it was in the V. Kaplan - P. Svyatoy game, 1954.
White chose 12....30-26 13.14-18 26:17 14.09-13 17-14 15.18:09 29-22 16.08-11 28-24 17.09-14 25-22 18.01-06 24-19 19.06-10 31-26 20.03-07 32-27 (position)
21.11-15 19-16! 22.12:19 27-23 23.19-24 20:27 24.07-11 23-19 25.15:31 26-23 26.31:17 23-18 27.14:23 21:16 Draw