Chess Olympiad
2018
Special Commendation
White wins
1. Nc2+! 1. Rf2? Rc6+! (1... Rxh6? 2. Rxa2+! bxa2 3. Nc2#; 1... b2+? 2. Rxb2 Rc6+ 3. Rc2 Rxh6 (3... Rxc2+ 4. Nxc2#) 4. Rxa2#) 2. Nxc6 b2+ 3. Rxb2 stalemate 1... bxc2 2. h7 Rf6! 2... Rh6 3. Rf1! Rxh7 4. Kxc2#
3. Rf7!! mutual zugzwang 3. h8=Q? stalemate; 3. h8=R? Rxf8 4. Rxf8 stalemate; 3. Rg8? Rf1+! (3... Rh6? 4. Rg1 Rxh7 5. Kxc2#) 4. Kxc2 Rf2+ 5. Kb3 Rf3+ 6. Kc2 Rf2+ perpetual check 3... Rf1+! 4. Kxc2 Rf6! Black managed to lose a tempo but the position is slightly changed: the first rank now it is open. 4... Rf2+ 5. Kb3 Rb2+ 6. Ka3 (6. Kc3?! Rc2+! 7. Kb3 Rb2+) 6... Kb1 7. Rf1+ Kc2 8. h8=Q +-; 4... Rc1+ 5. Kb3! Kb1 6. h8=Q a1=Q 7. Qh7+ +-
5. h8=R! 5. Rd7? Rc6+ 6. Kb3 Rb6+ 7. Ka3 Ra6+ 8. Kb3 Rb6+ perpetual check 5... Rxf7 6. Rh1+ Rf1 7. Rxf1#
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