Dvoretsky MT
2017
Commendation
White wins
1. a7 Kf1! Black avoids moving to f3 because that square is on the long diagonal. 2. Re7! Logical try: 2. Re8? c4 3. Rb8 Rb3! 4. Rxb3 cxb3 5. Kb8 b2 6. a8=Q No check! b1=Q+ = 2... Kf2 Now white has to lose a tempo.
cyclic zugzwang - WTM
3. Rb7 Ra5 4. Rc7! 4. Kb8? Ke3 5. Rc7 Kd4 = 4... Rb5 4... Ke3 5. Kb7 Kd4 6. Rc6! (6. Kb6? Ra1 7. Rxc5 Rxa7! =) 6... Rxa7+ 7. Kxa7 +- 5. Re7 White has transferred the move to black.
cyclic zugzwang - BTM
5... Kf3 Now it was unavoidable for the black king to step on the long diagonal. 5... Kf1 6. Rb7 Ra5 7. Rb2/Kb8 +- 6. Re8! Now that the black king was lured to f3 the main plan works! 6... c4 6... Kf2 7. Rb8 Ra5 8. Kb7 Ke3 9. Rc8 Kd3!? 10. Rxc5! +- (10. Kb6? Rxa7 11. Kxa7 c4 =) 7. Rb8 Rb3 8. Rxb3+ cxb3 9. Kb8 b2 10. a8=Q+ +- The queen has promoted with check!
Watch this study on a dynamic board! Click here!
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