E. Dobrescu
3rd and Special Prize
Troitzky Memorial Tourney (USSR), 1966

Win
 
White: Kb3, Qg3
Black: Ka6, Rd1, Bf8; pawn - e5

1. Qf3/i Rb1+ 2. Kc2/ii Rb8 3. Qc6+ Ka7/iii 4. Qc7+ Ka8/iv 5.
Qd7/v e4 6. Qc6+ Ka7 7. Qc7+ Ka8 8. Qd7 e3 9. Kd3/vi Rb3+ 10.
Ke4 Rb4+/vii 11. Kf3/viii Rb8 12. Qc6+ Ka7 13. Qc7+ Ka8 14.
Qd7 e2 15. Kxe2 Rb2+ 16. Kd3 

i/ 1. Qg6+ Rd6 2. Q-any Rb6+ and 3...Bb4(d6); 1. Kc2 Rd6 2.
Qa3+ (2. Qf3 Be7) 2...Kb7 3. Qb3+ (3. Qf3+ Rc6+) 3...Kc8 draws
ii/ 2. Ka4 Rb4+; 2. Ka2 Rb8; 2. Kc3 Rb8 for ...Bb4+
iii/ 3...Ka5 4. Kc3 e4/ix 5. Qc7+ Rb6 6. Kc4 Bb4 7. Qa7+ Ra6 8.
Qb7 Rb6 9. Qd5+ Ka4 10. Qd1+ and 11. Qa1+.
iv/ 4...Rb7+ 5. Qa5+ Kb8 6. Qd8+ and 7 Qxf8.
v/ Completing the remarkable Zugzwang position, ...Bb4 being
now met by Qa4+. Black's King cannot move. 5...Rb7 6 Qc8+ Rb8
7 Qa6 mate, and moves of the black Bishop lose the piece.
vi/ If the white King plays to a black square a check from the
Bishop should secure the (still difficult) draw. Hence White
employs Zugzwang to win the pawn when it is on the white square
e2, while Black counters with rook checks.
vii/ 10...e2 11. Qa4+ wins; 10...Rb8 11. Kf3
viii/ 11. Kxe3 Bc5+ 12. Kf3 Ba7.
ix/ 4...Ba3 5. Qc7+ Rb6 6. Qa7+ Ra6 7. Qb7 Bc5 (7...Rb6 8.
Qd5+) 8. Kc4 Bb6 9. Qc6(d5)+; 4...Bb4+ 5. Kc4 with similar
variations. 




