[Event "2.p The Problemist 2019"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "Rusz=A"]
[Black "(+3400.21f5h1)"]
[Result "1-0"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "2R5/P7/8/P4K2/8/8/p3q2r/7k w - - 0 1"]
[PlyCount "11"]
[EventDate "2018.??.??"]

{The Problemist/9 2019, 2do. Premio} 1. Rc1+ $1 (1. a8=Q+ $2 1... Kg1 (1... Qg2
$2 2. Rc1#) (1... Rg2 $2 2. Rc1+ Kh2 3. Qh8+ $18) 2. Rc1+ 2... Qf1+ $1 (2...
Kf2 $2 3. Qa7+ Qe3 4. Rc2+ Kf3 5. Qb7+ Kg3 6. Qg7+ Kf3 7. Qg4#) 3. Rxf1+ Kxf1
4. Qa6+ Kg1 5. Qg6+ Rg2 6. Qf6 (6. Qb6+ 6... Rf2+ $19) 6... Rf2+ $19) 1... Qf1+
$1 (1... Kg2 2. a8=Q+ Qf3+ 3. Qxf3+ Kxf3 4. Rc3+ Ke2 5. Ra3 Kd1 6. a6 Kc1 7. a7
Rh8 8. Rxa2 $18) 2. Rxf1+ Kg2 3. Rh1 $3 (3. a8=Q+ $2 3... Kxf1 4. Qa6+ Kg1 5.
Qg6+ 5... Rg2 $19) (3. Ra1 $2 3... Rh5+ 4. Ke4 4... Rxa5 $11) 3... Kxh1 (3...
Rxh1 4. a8=Q+ $18) 4. a8=Q+ Kg1 5. Qg8+ Rg2 6. Qh8 $1 $18 1-0

[Event "Lerch MT 2021, 1er. Premio"]
[Site "?"]
[Date "2021.??.??"]
[Round "?"]
[White "Martin Minski"]
[Black "[+3111.01a3c2]"]
[Result "*"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "8/8/8/3q4/8/K4pN1/2k2B2/R7 w - - 0 1"]
[PlyCount "27"]

{  } 1. Ra2+ $1 1... Kb1 2. Rb2+ Ka1 3. Be1 $1 3... Qe5 (3... Qd6+ 4. Rb4 Qd3+
5. Rb3 Qa6+ 6. Kb4 Qb6+ 7. Kc3 $1 7... f2 8. Bxf2 Qxf2 9. Kc4 $1 9... Qf4+ 10.
Kc5 $1 10... Ka2 11. Rd3 $1 11... Kb2 12. Kd5 $1 12... Kc2 13. Rc3+ $3 13...
Kxc3 (13... Kd2 14. Ne4+ $11) 14. Ne2+ $11) 4. Rf2 $1 (4. Ra2+ $2 4... Kb1 5.
Rf2 Qxe1 6. Rf1 f2 7. Kb3 7... Kc1 $19) (4. Rh2 Qxe1 5. Rh1 f2 6. Rf1 Kb1 7.
Kb3 7... Kc1 $19) 4... Qe7+ (4... Qe3+ 5. Ka4 5... Kb1 $11) (4... Kb1 5. Rf1
$11) 5. Ka4 $1 5... Qe8+ 6. Ka3 (6. Kb3 Qxe1 7. Rf1 7... f2 $22 8. Ka3 (8. Kc2
8... Ka2 $19) 8... Kb1 9. Kb3 9... Kc1 $19) 6... Qe7+ 7. Ka4 Qxe1 8. Rf1 f2 9.
Kb3 $1 (9. Ka3 $2 9... Kb1 10. Kb3 10... Kc1 $22 $19) 9... Kb1 10. Ne4 $1 10...
Kc1 (10... Qxf1 11. Nd2+ $11) 11. Ng3 Kd1 12. Kb2 $1 12... Kd2 13. Rxf2+ Qxf2
14. Ne4+ $11 *

[Event "Zakharov MT 2021, 2do. Pre."]
[Site "?"]
[Date "2021.??.??"]
[Round "?"]
[White "Luis M. Gonzalez"]
[Black "[+0000.25f7f3]"]
[Result "*"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "8/2Pp1K2/3p4/8/8/p2p1k1p/7P/8 w - - 0 1"]
[PlyCount "83"]

{  } 1. c8=Q d2 2. Qc2 (2. Qc3+ $2 2... Ke2 3. Qc2 Ke1 4. Qe4+ 4... Kd1 $11)
2... Ke2 3. Kf8 $1 (3. Kg6 $2 3... Ke1 4. Qe4+ Kd1 5. Qa8 Ke2 6. Qe8+ 6... Kd3
$11) (3. Kf6 $2 3... Ke1 4. Qe4+ Kd1 5. Qa8 Ke1 6. Qe8+ 6... Kf2 $11 (6... Kf1)
) (3. Ke7 $2 3... Ke1 4. Qe4+ Kd1 5. Qa8 5... Ke2 $11 (5... Ke1)) (3. Kg7 d5 4.
Kh6 d6 5. Kg5 5... Ke1 $11) 3... Ke1 (3... d5 4. Ke7 Ke1 5. Qc3 $18 5... d4 6.
Qg3+ Kd1 7. Qf3+ Kc2 8. Qf5+ d3 9. Qc5+ Kd1 10. Kxd7 a2 11. Qc3 Ke2 12. Qe5+
Kf2 13. Qa1 $18) 4. Qe4+ Kd1 5. Qa8 $1 (5. Kg7 $2 5... a2) 5... Ke2 6. Qe8+ $1
(6. Qa6+ $2 6... Ke1 $11) 6... Kd3 7. Qg6+ $1 (7. Qh5 Kc2 8. Qf5+ 8... Kc1 $11)
7... Ke2 8. Qh5+ Ke1 9. Qe8+ Kd1 (9... Kf2 10. Qf7+ Ke1 11. Qe7+ Kd1 12. Qxd6
a2 13. Qa3 Ke1 14. Qe3+ Kd1 15. Qc3 Ke2 16. Qe5+ Kf2 17. Qa1 Ke2 18. Qxa2 $18)
10. Qf7 $1 (10. Qxd7 $2 10... a2 $11) 10... Kc1 11. Qc4+ Kd1 12. Kg7 $1 12...
Ke1 13. Qe4+ Kd1 14. Qa8 Ke2 15. Qe8+ Kd3 16. Qg6+ Ke2 17. Qh5+ Ke1 18. Qe8+
Kd1 19. Qf7 Kc1 20. Qc4+ Kd1 21. Kh6 $1 21... Ke1 22. Qe4+ Kd1 23. Qa8 Ke2 24.
Qe8+ Kd3 25. Qg6+ Ke2 26. Qh5+ Ke1 27. Qe8+ Kd1 28. Qf7 Kc1 29. Qc4+ Kd1 30.
Kg5 $1 30... Ke1 31. Qe4+ Kd1 32. Qa8 Ke2 33. Qe8+ Kd3 34. Qg6+ Ke2 35. Qh5+
Ke1 36. Qe8+ Kd1 37. Qf7 Kc1 38. Qc4+ $18 {Si} 38... Kd1 39. Kf4 Ke1 40. Ke3
d1=Q (40... d1=N+ 41. Kd4 $18 {, etc.}) 41. Qh4+ Kf1 42. Qf2# *

[Event "Feuille d' Avis de Lausanne"]
[Site "?"]
[Date "1930.??.??"]
[Round "?"]
[White "Andre Cheron"]
[Black "[+0432.01a3a5]"]
[Result "*"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "b1r5/5N2/p2N4/k7/8/KR6/8/8 w - - 0 1"]
[PlyCount "1"]

{  } 1. Ne5 $1 *

[Event "Schweiz. Schachzeitung"]
[Site "?"]
[Date "1931.??.??"]
[Round "?"]
[White "Adolf Kraemer"]
[Black "[+1300.30f4a1]"]
[Result "*"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "8/1P4PP/1Q6/8/5K2/8/6r1/k7 w - - 0 1"]
[PlyCount "1"]

{  } 1. g8=R $3 *

[Event "Kreuznacher Zeitung"]
[Site "?"]
[Date "1933.??.??"]
[Round "?"]
[White "Carl Fabel"]
[Black "[+0123.10d5f4]"]
[Result "*"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "8/3B4/7n/3K4/3B1k2/8/4P3/6R1 w - - 0 1"]
[PlyCount "1"]

{  } 1. Bh3 $1 *

[Event "Osintsev-64 JT"]
[Site "?"]
[Date "2024.??.??"]
[Round "?"]
[White "Aleksey Popov"]
[Black "[+4240.02e6h8] (EG, 2025)1 P"]
[Result "*"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "7k/6R1/b3K3/8/R7/1p6/Q3p3/2q2B2 w - - 0 1"]
[PlyCount "26"]

{  } 1. Rg8+ $1 (1. Qxe2 $2 1... Bxe2 2. Rga7 Bg4+ 3. Rxg4 Qe3+ 4. Kd5 4...
Qxa7 $19) 1... Kh7 2. Rh4+ Kxg8 3. Qxb3 $1 3... Bc4+ 4. Rxc4 e1=Q+ 5. Be2 $1 (
5. Kf5 $2 5... Qb1+ 6. Re4+ Qxb3 7. Rxe1 Qf3+ 8. Kg5 8... Qg3+ $19) 5... Qxe2+
(5... Qh6+ 6. Kd7) 6. Re4 $3 6... Qxe4+ 7. Kf6+ 7... Kh7 $1 (7... Qcc4 8. Qb8+
Kh7 9. Qa7+ Kh6 10. Qg7+ Kh5 11. Qg5#) 8. Qg8+ $1 8... Kh6 (8... Kxg8 {
stalemate.}) 9. Qh8+ Qh7 10. Qf8+ Kh5 11. Qe8+ Kg4 (11... Kh4 12. Qe1+ $3 12...
Qxe1 {stalemate.}) 12. Qe2+ Kf4 (12... Kg3 13. Qe3+ 13... Qxe3 {stalemate.})
13. Qc4+ $1 13... Qxc4 {stalemate.} *

[Event "28 Rijen#206"]
[Site "?"]
[Date "1925.08.01"]
[Round "?"]
[White "Reti=R"]
[Black "(+0400.22b4e3)"]
[Result "1-0"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "7R/4r2P/1p6/5p2/1K6/2P1k3/8/8 w - - 0 1"]
[PlyCount "23"]
[EventDate "1925.08.01"]

{  } 1. Kb5 f4 2. Kc6 $1 (2. Kxb6 $2 2... f3 $1 3. c4 f2 4. Rf8 Rxh7 5. c5 $11)
2... Kf2 $1 (2... f3 3. Kd6 $1 3... f2 (3... Re4 4. Rf8 Rh4 5. h8=Q Rxh8 6.
Rxh8 $18) 4. Kxe7 f1=Q 5. Rd8 $18 (5. Rf8 $18)) 3. Kxb6 $1 (3. c4 3... f3 $11)
3... f3 4. Kc6 $1 (4. c4 $2 4... Ke2 5. Kc6 f2 6. Kd6 6... Rxh7 $1) (4. Kc5 $5
{minor dual.}) 4... Rf7 (4... Ke1 5. Kd6 $1 $18 5... f2 (5... Re2 6. Rf8 $18)
6. Kxe7 $1 6... f1=Q 7. Re8 $3 $18) (4... Ke2 5. Kd6 $18) 5. Kd6 (5. Kd5 $5 {
minor dual.}) 5... Rf6+ (5... Kf1 6. Ke6 Rc7 7. Rf8 $1 7... Rxh7 8. Rxf3+ Ke2
9. Rf4 Ke3 10. Rg4 $1 10... Kf3 (10... Kd3 11. c4 Rc7 12. Kd5 Rd7+ 13. Kc6 $18)
11. Ra4 $18) 6. Kd5 $18 {y las blancas ganan; por ejemplo si:} (6. Ke5 {
minor dual.} 6... Rf7 7. Ke6 Rc7 8. Kd6 $18) 6... Rf5+ 7. Ke6 Rh5 8. Kd6 $1
8... Rh6+ 9. Kc5 Rh5+ 10. Kb4 Kf1 11. Rf8 Rxh7 12. Rxf3+ $18 1-0

[Event "Themes-64#0730 {c}"]
[Site "?"]
[Date "1961.??.??"]
[Round "?"]
[White "Proskurowski=W"]
[Black "[+4000.10e2f7"]
[Result "1-0"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "8/3P1k2/7Q/2q5/8/8/4K3/8 w - - 0 1"]
[PlyCount "11"]
[EventDate "1961.??.??"]

1. Qh7+ $1 (1. d8=Q $2 1... Qf2+ 2. Kd3 (2. Kxf2 {stalemate.}) 2... Qc2+ 3. Ke3
(3. Kxc2 {stalemate.}) 3... Qe2+ 4. Kd4 4... Qb2+ $11) 1... Ke6 2. d8=N+ $1 (2.
d8=Q $2 2... Qh5+ $1 3. Qxh5 {stalemate.}) (2. d8=R $2 2... Qe5+ 3. Kd3 3...
Qb5+ $1 4. Kc2 Qa4+ 5. Kc1 Qa3+ 6. Kd1 6... Qa1+ $1 7. Ke2 (7. Kd2 7... Qa5+
$11) 7... Qe5+ $1 $11) 2... Kd5 3. Qf7+ $1 (3. Qg8+ $2 3... Ke4 $1 4. Qg4+ Kd5
5. Ne6 5... Qa3 $11) 3... Ke4 4. Qf3+ Ke5 5. Qh5+ $1 5... Kd4 (5... Kd6 6. Nb7+
$18) 6. Ne6+ $18 {Una obra conceptual artisticamente matematica.} 1-0

.} 1-0

[Event "Ceskoslovensky Sach#108"]
[Site "?"]
[Date "1965.??.??"]
[Round "?"]
[White "Lewandowski=A"]
[Black "[=3104.00e3d6"]
[Result "1/2-1/2"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "6n1/3q4/3k4/8/8/4K3/3N3R/8 w - - 0 1"]
[PlyCount "19"]
[EventDate "1965.??.??"]

1. Ne4+ $1 1... Kc6 (1... Ke5 2. Rh5+ $1 2... Ke6 (2... Qf5 3. Rxf5+ 3... Kxf5
$11) 3. Nc5+ $11) 2. Rc2+ $1 2... Kb6 3. Rb2+ $1 3... Ka5 4. Ra2+ $1 4... Kb5
5. Rb2+ Kc4 6. Rc2+ Kb4 7. Rb2+ Ka3 8. Rb3+ $3 8... Ka2 (8... Kxb3 9. Nc5+ $11)
9. Rb5 $1 $11 {
Una posicion de resistencia elegante y de precision matematica: Obviamente si}
9... Qxb5 (9... Qc6 10. Kd4 $1 10... Ne7 11. Nc3+ Ka3 12. Nb1+ Ka2 13. Nc3+
13... Ka3 $11 (13... Ka1 $4 14. Rb1#)) 10. Nc3+ {y tablas. Un bonito estudio
de Lewandowski; como no podia ser de otra manera, tratandose de un Dr. en
matematicas, estas no estan ausentes en la composicion del autor polaco... ?es
que acaso las matematicas no son parte intrinseca en la naturaleza del
ajedrez?} 1/2-1/2

2

[Event "1.p Fokin-90 JT Zadachy i Etyudy"]
[Site "?"]
[Date "2015.12.19"]
[Round "?"]
[White "Ryabinin=N"]
[Black "(+0170.22f5f8)"]
[Result "1-0"]
[Annotator "Copie"]
[SetUp "1"]
[FEN "5k2/6p1/1b1PP3/5KR1/b7/8/7p/2B5 w - - 0 1"]
[PlyCount "23"]
[EventDate "2015.12.19"]

{Zadachy i Etyudy=67 (EG#20735).} 1. Rh5 1... g6+ $1 2. Kxg6 Be8+ 3. Kh7 $1
3... Bxh5 4. Bh6+ $1 4... Ke8 5. Bg5 $1 5... Kf8 $1 (5... h1=Q 6. d7+ Kf8 7.
e7+ Kf7 8. e8=Q#) 6. Be7+ $1 (6. d7 $2 6... Be8 $1 7. e7+ Kf7 8. d8=N+ Bxd8 9.
exd8=Q (9. exd8=N+ Kf8 10. Ne6+ Kf7 11. Nd8+ Kf8 12. Ne6+ $11) 9... h1=Q+ $1
10. Bh4 $11) 6... Ke8 7. Bh4 $1 7... Kf8 $1 8. d7 $1 8... Bd8 $1 (8... Be8 9.
e7+ Kf7 10. d8=N+ (10. d8=Q $2 10... h1=Q $19) 10... Bxd8 11. exd8=Q h1=Q 12.
Qe7#) 9. Bxd8 9... Be8 $1 (9... h1=Q 10. e7+ Kf7 11. e8=Q#) 10. Bh4 $1 10...
h1=Q 11. e7+ Kf7 12. d8=N# {Una obra de arte muy bella, que ademas de ser
publicada en Zadachi i Etyudy, y en "EG",2016; tambien la inserto en sus
paginas el Album FIDE 2013-2015. Los jueces que incluyeron y puntuaron
acertadamente la obra, que tenemos a la vista, en el mencionado Album de la
FIDE, han comentado sinteticamente:   "Una ardua batalla para evitar la
promocion, sacrificios, cierre de lineas y un mate con promocion de caballo". 
   El juez que decidio el primer premio, Jubileo Fokin-90 JT, de esta
magnifica obra fue el compositor e Ing. ruso  Vladimir  Ilich Katsnelson
(1937-2024).    Quien esto comenta concuerda con el maestro Katsnelson,
respecto a que la presentacion de este bonito estudio se asemeja, no cabe duda,
a la posicion de una partida viva: Claro, los aspectos constitutivos, el
entramado de las combinaciones resultantes pertenecen a las ideas creativas
del compositor que ideo esta joya del ajedrez, Nikolay Ryabinin,  para solaz
de los maestros y aficionados que tengan la oportunidad de gozar de la misma
al momento de reproducirla e incluso dar con las jugadas que conducen a la
solucion de la misma.    } 1-0

