www.arves.org - Didukh, Sergiy 1976

Selection of studies out of more than 241 composed by

Sergiy Igorovich Didukh

(Ukraine, 31.5.1976)

Some more information about him can be found in EG155 and at ChesscomposerBlogspot.

He also has his own Blog.

He also is webmaster of this very nice website about endgames studies https://chessstudy.art/

(All his studies, more exact dates, possible corrections or cooks and exact details about sources can be found in the

[Event "Sp.p"] [Site ""] [Date "2011"] [Round ""] [White "Sergei Didukh"] [Black ""] [Result "1-0"] [Annotator ""] [SetUp "1"] [FEN "Q7/1N1pp3/3p2p1/6P1/7K/4p3/4P1p1/3n3k w - - 0 1"] [PlyCount "17"] [EventDate "2011"] 
 {If the knight didn't interfere with his queen Pg2 would have been pinned and White could mate in a couple of moves. Consequently, the knight is allowed to do whatever he wants to. The capture of black Pd6 is a nice tactical move, but it is only a logical (thematic) try.} 1. Na5 $3 {Quiet transfer of the knight to e3.} ({Logical (thematic) try} 1. Nxd6 $143 Kh2 2. Qf3 Nf2 3. Qg3+ Kh1 4. Qf3 Kh2 5. Nc4 g1=Q 6. Nxe3 d6 $1 {White in zz!} 7. Nd1 $1 Qxd1 8. Qxf2+ Kh1 9. Kh3 Qb3+ 10. e3 Qe6+ 11. Kg3 Qe5+ $1 $11 {draw.}) 1... Kh2 ({Black can try to get rid of his pawn} 1... d5 $144 2. Qxd5 Kh2 3. Qxd1 {but his knight falls too } (3. Qf3 $143 Nf2 4. Nc4 g1=Q 5. Nxe3 d6 $11 {zz}) 3... g1=Q 4. Qxg1+ Kxg1 5. Kg3 $1 $18) 2. Qf3 Nf2 3. Nc4 $1 (3. Qf4+ $143 Kh1 4. Qf3 Kh2 5. Nc4 $18 {loss of time}) 3... g1=Q 4. Nxe3 {Black in zz! His spared Pd6 blocks the square. King, queen and knight are totally paralyzed. And what is wrong withthepawnsmoves?} e5 (4... d5 $144 5. Nd1 $1 Qg2 6. Qxf2 d4 7. Qf4+ Kh1 8. Nf2+ Kg1 9. Nh3+ Kh1 10. Qxd4 $18) 5. Nd1 $1 Qxd1 ({The knight cannot desert his post.} 5... Nxd1 $144 6. Qh3#) 6. Qxf2+ Kh1 7. Kh3 (7. Kg3 $143 Qg1+ $19) 7... Qb3+ 8. e3 Qe6+ 9. Kg3 $1 $18 {win. Black cannot play Qe5+. An evil chance seldom comes alone - because of the blocking on d6 another pawn has blocked square e5. This combination of material and tempo logical ideas with a deep logical try was called as "Krikheli forsight effect" by Andrey Visokosov. "I dedicate my study to him for his development of this interesting and complex theme in his creative work."(S.Didukh)} 1-0

[Event "3rd HM"] [Site ""] [Date "2011"] [Round ""] [White "Sergei Didukh"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/8/8/4p1r1/kr2P3/2R1P1p1/1b2KR2/3N4 w - - 0 1"] [PlyCount "9"] [EventDate "2011"] 
 1. Rc2 $1 ({Try} 1. Rc4 $143 Rxc4 $1 2. Nxb2+ Kb3 3. Nxc4 gxf2 4. Nd2+ Kc2 5. Nf3 Rh5 6. Kf1 Kd3 7. Kxf2 Kxe4 8. Ke2 Kf5 9. Kf2 e4 10. Nd4+ Kg4 11. Kg2 Rh3 12. Kf2 Rh2+ 13. Kf1 Rd2 14. Ke1 Ra2 15. Kd1 Kg3 16. Ke1 Kg2 17. Kd1 Kf2 18. Nf5 Ra5 19. Ne7 Kxe3 $19) 1... g2 $1 (1... gxf2 $144 2. Rxb2 $1 Rxb2+ 3. Nxb2+ Kb3 4. Nd3 Kc3 5. Nxf2 $11) 2. Nxb2+ Ka3 (2... Rxb2 $144 3. Rxb2 g1=Q 4. Kd3 $1 Rg8 (4... Qc1 $144 5. Rfc2 Qf1+ 6. Kc3 $11) (4... Qd1+ $144 5. Kc4 $11) 5. Ra2+ Kb5 6. Rfb2+ Kc6 7. Ra6+ Kd7 8. Ra7+ Kd6 9. Ra6+ {perpetual} Kc5 $11 (9... Ke7 $143 10. Rb7+ Kf8 11. Ra8#)) (2... Kb3 $144 3. Rc1 g1=Q 4. Rxg1 Rxg1 5. Nd3 $11 ) 3. Nc4+ $1 (3. Kd3 $143 g1=Q 4. Nc4+ Rxc4 $1 (4... Ka4 $143 5. Ra2+ Kb5 6. Ra5+ Kc6 7. Rf6+ Kb7 (7... Kd7 $143 8. Ra7+ Ke8 9. Nd6+ Kd8 10. Rf8#) 8. Rf7+ Kb8 9. Rf8+ $11 {perpetual}) 5. Kxc4 Qb1 $1 $19) 3... Rxc4 4. Rxg2 $1 Rxg2+ ( 4... Rxc2+ $144 5. Kf3 $1 $11) 5. Kd3 $11 {stalemate.} 1/2-1/2