[Event "1st Pr. Zadachy i Etiudy 2012"]
[Site "?"]
[Date "2012.??.??"]
[Round "?"]
[White "Didkukh, Sergiy"]
[Black "?"]
[Result "*"]
[Annotator "3700"]
[SetUp "1"]
[FEN "8/2PPb2B/7k/q7/8/6p1/6N1/6K1 w - - 0 1"]
[PlyCount "20"]
[EventDate "2012.??.??"]
[SourceTitle "CI120 Studies by Afek"]
[Source "Chess Informant"]
[SourceDate "2014.06.07"]
[SourceVersion "1"]
[SourceVersionDate "2014.06.07"]
[SourceQuality "1"]
1. d8=Q $1 {[%CAl Rc7c8]} (1. c8=Q $2 Qa1+ (1... Qa7+ 2. Kh1 (2. Kf1 Qf2#) 2...
Qa1+ 3. Bb1 Qxb1+ 4. Ne1 Qxe1+ 5. Kg2 $19 {Stockfish 14:} Qe2+ ({Stockfish 14:
} 5... Qf2+ 6. Kh3 Qf1+ 7. Kg4 g2 8. Qh8+ Kg6 9. Qg8+ Kf6 10. Qg5+ Ke6 11.
d8=N+ (11. d8=Q $4 {Stockfish 14:} g1=Q+ ({Stockfish 14:} 11... g1=R+ 12. Kh4
Qf2+ 13. Kh3 (13. Kh5 Qh2+ 14. Kg6 Rxg5#) 13... Qf3+ 14. Kh2 (14. Kh4 Qh1#)
14... Rh1# {[%eval -32759,41]}) 12. Kh4 Qxg5# {[%eval -32763,40]}) 11... Bxd8
12. Qe3+ Kf7 13. Qb3+ Kg7 14. Qc3+ Qf6 15. Qxf6+ Kxf6 16. Kf3 g1=Q 17. Ke2 Qd4
18. Kf3 Kf5 19. Kg2 Kg4 20. Kf1 Kf3 21. Ke1 Bh4+ 22. Kf1 Qf2# {[%eval -32731,
42]}) 6. Kh3 Qf1+ 7. Kg4 g2 8. Qh8+ Kg6 9. Qg8+ Kf6 10. Qg5+ Ke6 11. d8=N+ Bxd8
12. Qe3+ Kf7 13. Qb3+ Kg7 14. Qc3+ Qf6 15. Qxf6+ Kxf6 16. Kf3 g1=Q 17. Ke2 Qd4
18. Kf3 Kf5 19. Kg2 Kg4 20. Kf1 Kf3 21. Ke1 Bh4+ 22. Kf1 Qf2# {[%eval -32731,
42]}) 2. Bb1 $1 Qxb1+ 3. Ne1 Qxe1+ 4. Kg2 Qf2+ 5. Kh3 {[%tqu "En","","","",
"f2f1","",10,"f2h2","",0]} Qf1+ (5... Qh2+ $2 6. Kg4 Qe2+ 7. Kh3 $11) 6. Kxg3 {
[%tqu "En","","","","e7d6","",10]} Bd6+ $1 $19 {[%csl Rf2,Rf3,Rf4,Rg2,Rh2,Rh3]
[%CAl Gg3h4,Gg3g4]} 7. Kg4 (7. Kh4) 7... Qf4+ 8. Kh3 Qg3#) 1... Bxd8 {[%tqu
"En","","","","c7c8Q","",10]} 2. c8=Q Qa7+ 3. Kh1 $1 (3. Ne3 $2 {[%tqu "En","",
"","","a7e3","",10]} Qxe3+ 4. Kg2 Qf2+ 5. Kh3 g2 6. Qc6+ {[%tqu "En","","","",
"d8f6","",10]} Bf6 7. Bf5 {[%tqu "En","","","","g2g1N","",10]} g1=N+ (7... g1=Q
$4 {[%tqu "En","","","","c6f6","",10,"c6c1","",0] Stockfish 14:} 8. Qxf6+ ({
Stockfish 14:} 8. Qc1+ $4 {[%tqu "En","","","","g1c1","",10]} Qxc1 9. Bd7 {
[%tqu "En","","","","c1e3","",10]} Qce3+ 10. Kg4 Qff3# {[%eval -32761,78]})
8... Kh5 {[%tqu "En","","","","f6f7","",10]} 9. Qf7+ Kg5 10. Qe7+ Kxf5 {
[%tqu "En","","","","e7e4","",10]} 11. Qe4+ Kf6 12. Qc6+ Kf7 13. Qd7+ Kf8 {
[%tqu "En","","","","d7g7","",10]} 14. Qg7+ Ke8 {[%tqu "En","","","","g7e7","",
10]} 15. Qe7+ Kxe7 $11 {[%eval 0,76]}) 8. Kg4 Qh4#) 3... Qa1+ 4. Bb1 $1 Qxb1+
5. Ne1 Qxe1+ 6. Kg2 Qf2+ 7. Kh3 g2 (7... Qf1+ 8. Kxg3 $11) 8. Qe6+ (8. Qg4 $2
Bf6 $1 {zz}) (8. Qc6+ $2 Bf6 9. Qxg2 Qh4#) (8. Qxd8 $2 g1=N+ 9. Kg4 Qf3+ 10.
Kh4 Qf4# (10... Qh3#)) 8... Bf6 9. Qg4 $1 {zz} g1=N+ 10. Qxg1 Qxg1 $11 {
Themes: Logical try, promotions, stalemate, reciprocal zugzwang, mate.} *
