[Event "Dvoretsky MT"] [Site "?"] [Date "2017.??.??"] [Round "?"] [White "Rusz, Árpád"] [Black "(Study 134)"] [Result "1-0"] [Annotator "Commendation"] [SetUp "1"] [FEN "K7/8/P7/1rp1R3/8/8/5k2/8 w - - 0 1"] [PlyCount "19"] [EventDate "2017.??.??"] 1. a7 Kf1 $1 {Black avoids moving to f3 because that square is on the long diagonal.} 2. Re7 $1 ({Logical try:} 2. Re8 $2 c4 3. Rb8 Rb3 $1 4. Rxb3 cxb3 5. Kb8 b2 6. a8=Q {No check!} b1=Q+ $11) 2... Kf2 {cyclic zugzwang - WTM. White has to lose a tempo.} 3. Rb7 Ra5 4. Rc7 $1 (4. Kb8 $2 Ke3 5. Rc7 Kd4 $11) 4... Rb5 (4... Ke3 5. Kb7 Kd4 6. Rc6 $1 (6. Kb6 $2 Ra1 7. Rxc5 Rxa7 $1 $11) 6... Rxa7+ 7. Kxa7 $18) 5. Re7 {cyclic zugzwang - BTM. White has transferred the move to black.} Kf3 {Now it was unavoidable for the black king to step on the long diagonal.} (5... Kf1 6. Rb7 Ra5 7. Kb8 ({or} 7. Rb2 $18) 7... Ke2 8. Rc7 $18) 6. Re8 $1 {Now that the black king was lured to f3 the main plan works!} c4 (6... Kf2 7. Rb8 Ra5 8. Kb7 Ke3 9. Rc8 Kd3 $5 10. Rxc5 $1 $18 (10. Kb6 $2 Rxa7 11. Kxa7 c4 $11)) 7. Rb8 Rb3 8. Rxb3+ cxb3 9. Kb8 b2 10. a8=Q+ {Check!} 1-0