Oleg Pervakov
Selivanov-50 JT
2017
1st Prize
Draw
Both pawns are detained, but the black pawn will cost white a piece sooner or later... 1. Nf3! To deal with a pawn it is necessary to oblige her to turn into a queen! 1... h1=Q 2. Nd2+ Kg1 3. Bxh1! Difficult choice. But to leave on a board a bishop - means to die: (3. Nf3+? Qxf3+! 4. Bxf3 Bxf5 -+) 3... Kxh1
Logical try: 4. Ne4? Nd5+ (4... Bxf5? 5. Ng3+ =) 5. Kd4 Nxc7 6. Ke5 Ne8! (6... Bg8? 7. Kf6 Ba2 8. Nd6! =) 7. Ke6 Ng7+! 8. Kf6 Nxf5!
9. Ng5 Bg6 10. Ne6 Nd6! 11. Kg7 Ndf7 -+, and black pieces are located comfortably in the top right corner
Solution: 4. Kf4!! Other moves of the king are easily disproved: 4. Ke4? Nf7 -+; or 4. Kd4? Bxf5 -+ 4... Nd5+ (4... Nf7 5. Ne4! Nd5+ 6. Kg4! Nxc7 7. Nf6 =, and the bishop is caught) 5. Ke5! (5. Kg5? Nf7+! -+) 5... Nxc7 6. Kf6! (It is senseless to attack a knight c7: 6. Kd6? Nb5+! 7. Ke6 Bg8+ -+) 6... Ne8+ 7. Ke7 Amusing route of the white king on e3-f4-e5-f6 as "snake"! 7... Ng7 8. Kf6 Nh5+ 9. Kg5! Ng3 10. Kf6 Nxf5 (After 10... Bxf5 11. Nf1! black remains with two useless knights.)
Just a moment! We see the same position from logical try with one more tempo for black (the knight there already stood on e4!). An, no! 11. Nf3!! Here it, the sweet field for a knight with a high, juicy grass in the form of three black pieces! 11... Bg6! 12. Ne5 Bh7 13. Nf3 Kg2 And what else? It is necessary to go... 14. Ng5 Bg6 15. Ne6! Oops! It was so pleasant to the black king in h1 corner (see logical try 4.Ne4)! And here the poor king was enticed on g2... 15... Kf3 (15... Nd6 16. Nf4+! = the fork trapped suddenly (or 16. Kg7 Ndf7 17. Nf4+ =)) 16. Nf8! = The poor bishop is caught!
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Oleg Pervakov
Olympic Ty
2018
1st Prize
White wins
1. Rd2! Rxe7+! Attracting the white rook on e7. (1... Qe3+ 2. Kf1 +-; 1... Re6+ 2. Kd1 +-) 2. Rxe7 Qh4+
3. Kf1!! It is necessary to get rid of pawn h3! (1st logical try: 3. Kd1? Qxe7 4. g7 (4. axb3 Qe3! =) 4... Qg5! 5. Rxd3+ (5. Kc1 b2+! 6. Kb1 Qg1+ 7. Kxb2 a3+! 8. Kxa3 Ra6+ 9. Kb2 Rb6+ 10. Ka3 Ra6+ perpetual check; 5. Re2 bxa2! 6. Rxa2 Qg1+ =) 5... Qe3! 6. Qc6+!? Kf2! 7. Qg2+ Kxg2 8. g8=Q+ Kh1/Kxh2 = and the pawn h3 prevents white to carry out conceived.) 3... Qxh3+ 4. Ke1 (4. Kg1?? Rxg6+ 5. Kh1 Qf1#) 4... Qh4+ 5. Kd1 Qxe7 6. g7! It is necessary to win a tempo. (After 6. Rxd3+?? Qe3! -+ the "Maltese cross" conducts to a victory of black.; The mate waits white after 6. Qc5?? Qe2+! 7. Rxe2 dxe2+ 8. Ke1 Rd1#) 6... Qg5! 7. Rxd3+ Qe3!
8. Qc6+!! Correct "removal from a cross"! (2nd logical try: 8. Qf6+? Rxf6! 9. Rxe3+ Kxe3 10. g8=Q Rf1#) 8... Kf2! (8... Rxc6 9. Rxe3+ Kxe3 10. g8=Q +-) 9. Qg2+! (9. Rxd6?? Qe1#) 9... Kxg2 10. g8=Q+ Kh3! Protection of black is based on win white rook d6 after capture black rook. (So, badly 10... Kh1 11. Qa8+ Kg1 12. Rxd6 +-) 11. Qh8+! And a problem of white - to force black to take also the second pawn "h". (Early 11. Rxd6? Qf3+ 12. Kc1 Qc3+ =; 11. Qh7+? Kg4! 12. h3+ Kg3! -+) 11... Kg2! (11... Kg4 12. h3+! Kg3 13. Qe5+! +-) 12. Qg7+! (No progress after 12. Qa8+ Kh3!, because 13. Qh1?? is not check) 12... Kxh2 It is necessary. (12... Kh3 13. Rxd6 Qf3+ 14. Kc1! Qf1+ 15. Rd1! +-) 13. Qh8+! The pawn of h2 is destroyed, and white realize the plan. (13. Rxd6? Qf3+ 14. Kc1 Qf1+! 15. Kb2 Qf2+ 16. Ka3 Qc5+ =) 13... Kg2 (13... Kg3 14. Qe5+! +-; 13... Qh6 14. Qe5+! +-; 13... Kg1 14. Rxd6 Qf3+ 15. Kc1! Qf4+ 16. Rd2 +-) 14. Qa8+! Kh3! (The white king leaves easily from checks after 14... Kg3 15. Rxd6 Qg1+ 16. Kd2(e2) Qf2+ 17. Kd3 Qc2+ 18. Kd4 Qd2+ 19. Kc5! +-; 14... Kh2 15. Rxd6 Qg1+ 16. Ke2! Qg4+ 17. Qf3 +-) 15. Qh1+! +- with the decisive check and the subsequent capture of the black rook. The newborn white queen visited three corners of a board. (15. Rxd6? Qg1+ 16. Ke2 Qh2+! =)
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Oleg Pervakov
EG-50
1st Prize
Draw
1. Qf2+! d4! (1... Ka8 2. Rb8+! Kxb8 3. Qb6+ =) 2. Nc6+! (2. Nxd4? Bd7+! 3. Kxd7 Rxd4+ -+) 2... Rxc6 3. Nxd4 Bd7+! Bishop sacrifice on d7. (3... Nxd4?? 4. Qf7+! +-) 4. Kxd7 (4. Ke7? Nxd4 5. Qxd4+ Ka8 -+) 4... d1=Q (After 4... d1=R!? White builds a new battery: 5. Qf7! =) 5. Bd2!! Echo bishop sacrifice on d2. (5. Kxc6? Nxd4+ 6. Qxd4+ Qxd4 -+, and no there is no stalemate, the bishop is on the board!) 5... Qaxd2! (5... Qdxd2 6. Kxc6 Nxd4+ 7. Qxd4+ Qxd4 8. Rb7+ Ka8 9. Rb8+! Kxb8 stalemate) 6. Kxc6
a) 6... Qh6+ 7. Ne6+ Nd4+ 8. Qxd4+! Qxd4 9. Rb7+ Ka8 10. Rb8+! Kxb8 = The 1st mirror ideal stalemate with a pinned knight
b) 6... Q1c1+ 7. Nc2+ Nd4+ 8. Qxd4+! Qxd4 9. Rb7+ Ka8 10. Rb8+! Kxb8 = The 2nd mirror ideal stalemate with a pinned knight
c) 6... Qh1+ 7. Nf3+ Nd4+ (7... Qd4 8. Rb7+ Ka8 9. Rb8+! Kxb8 10. Qg3+! Nxg3 stalemate) 8. Qxd4+! Qxd4 9. Rb7+ Ka8 10. Rb8+! Kxb8 = The 3rd mirror ideal stalemate with a pinned knight!
There is a try on the first move: 1. Bf2+? Ka8! 2. Rb6 Qa4+ 3. Kd8 Bxf5 4. Nxf5 Nd4! 5. Bxd4 (5. Nxd4 d1=Q 6. Qxd1 Qxd1 7. Nc6 Rxc6 8. Rxc6 d4 -+) 5... d1=Q 6. Qf4 (6. Qg2 Qxd4! 7. Nxd4 Qa5! 8. Ke8 Rc8+ 9. Kd7 Qxb6 10. Kxc8 Qxd4 -+) 6... Rc8+! 7. Kxc8 Qe8+ 8. Kc7 Qc2+ 9. Kd6 Qcc8! 10. Kxd5 Qg8+ 11. Ke4 Qc2+ 12. Ke5 Qc7+ 13. Ke4 Qg2+ 14. Qf3 Qcc2+ 15. Ke3+ Qxf3+ 16. Kxf3 Qxf5+ -+
Watch this study on a dynamic board! Click here!
Oleg Pervakov
JPA-85 JT
2017
1st Prize
Draw
1. Qe1! Qd6+ 1... Qxe1? 2. Nf7# 2. Ne6! Qxe6+ 3. Rg6 Nf6! 3... Ng4+?? 4. Kg5! Nef6 (4... Qe5+ 5. Kxg4 Kh7 6. Rb6! +-) 5. Qh4+ Nh7+ 6. Qxh7+ Kxh7 7. Rxe6 +- 4. Qc3! Pinning knight f6 4. Qxf2? Ng4+ 5. Kg5 Qxg6+ 6. Kxg6 Nxf2 -+ 4... N2g4+! 5. Rxg4 5. Kg5? Ne5! Unpinning knight f6. 6. Rxf6 Qg4+ -+ 5... Qf5! 6. Rh4 6. Rg5? Qh7# 6... b4! Black begins counterplay and wants to take the diagonal a1-d4 from the white queen. 7. Qd4 b3! 7... e3?? 8. b3 +-
1st logical try:
8. e3? White wants to play for stalemate or perpetual check. 8... b6! 9. Qc3 b5 10. Qd4 b4 11. Qd8+ Ng8+ 12. Qxg8+ Kxg8 13. Rg4+! Kf7 14. Rg7+ Ke6 15. Rg6+ Kd5! 16. Rg5 Qxg5+ 17. Kxg5 Kc4 18. Kf4 Kd3 -+
8. Qc3! e3! 8... b6? 9. Rxh3 +-
2nd logical try:
9. Qc4? Ng8+ 10. Qxg8+ Kxg8 11. Rg4+! Kf8 12.
Rg8+! Ke7 13. Rg7+ Kd6 14. Rg6+ Kc7 15. Rg7+ Kb8 16. Rg8+ Ka7! -+
9. Qd4! b6! Black wants to lose a tempo.
3rd logical try:
10. Qd8+? Ng8+ 11. Qxg8+ Kxg8 12. Rg4+! Kf7 13. Rg7+ Ke6 14. Rg6+ Kd7 15. Rg7+ Kc6 16. Rg6+ Kb7 17. Rg7+ Ka6! -+
10. Qc3! 10. Rxh3? Qxh3+ 11. Kg5 Qg2+! 12. Kf5 (12. Kxf6 Qg7+ -+) 12... Qd5+ 13. Qxd5 Nxd5 14. Ke4 Nc3+! -+ 10... b5 11. Qd4 b4 Now white is in zugzwang! But... 12. Qd8+/Qc4 Ng8+ 13. Qxg8+ Kxg8 14. Rg4+! Kf8 14... Qxg4 stalemate 15. Rg8+! Ke7 15... Kxg8 stalemate 16. Rg7+ Kd6 16... Kf6 17. Rf7+! Kxf7 stalemate 17. Rg6+ Ke7 18. Rg7+ perpetual check or stalemate
Watch this study on a dynamic board! Click here!
Oleg Pervakov
The Ural Problemist-25
2018
1st/2nd Prize
White wins
Logical try: 1. d5+? Bxd5 2. Rxd5 h2 3. Kc8 or 3. Rg6+ e6! 4. Kc8 Ra1 and so on 3... Ra1! 4. Rg6+ e6! 5. Rd6+ 5. Rxe6+ Kxd5 6. Ra6!? Rxa6 7. d8=Q+ Ke4! 8. Qh4+ Kf3 = 5... Kc5 6. Rg5+ e5 7. Rd5+ 7. Rxe5+ Kxd6 8. Ra5!? Rxa5 9. d8=Q+ Ke6! 10. Qg8+ Ke5 11. Qxg2 Rc5+ 12. Kd7 Rxc2 = 7... Kc4 8. Rg4+ e4 9. Rd4+ Kc3 10. Rg3+ e3! 10... Kb2? 11. Rb4+ Kc1 12. d8=Q Ra8+ 13. Rb8 Rxb8+ 14. Kxb8 g1=Q 15. Qg5+ +- 11. Rd3+
11... Kb2! =, and the black king hides in the shadow of the c2 pawn!
Solution: 1. c4!! 1. Rg6+? Re6! = 1... Bxc4 1... g1=Q 2. Rxg1 Rxg1 3. Rxa2 Rg8+ 4. Kxe7 Rg7+ 5. Ke6 Rxd7 6. d5+ +- 2. d5+! The pin of bishop does not lead to success: 2. Rc2? g1=Q 3. Rxg1 Rxg1 4. Rxc4+ Kd5! 5. Rc8! h2 6. Kc7 Rc1+ 7. Kb6 Rb1+ 8. Ka5 Ra1+ 9. Kb4 Rb1+ 10. Kc3 Rc1+ 11. Kd2 Rd1+! 12. Ke2 Re1+! 13. Kf2 Rf1+! 14. Ke2 Re1+ perpetual check 2... Bxd5 3. Rxd5! 3. Rg6+? Re6 -+; 3. Ke8? g1=Q 4. Rxg1 Rxg1 5. d8=Q Rg8+ = 3... h2! The best chance 3... Kxd5 4. Ke8 +- 4. Kc8! Ra1! 5. Rg6+ e6! 6. Rd6+! 6. Rxe6+? Kxd5 7. d8=Q+ Kxe6 = 6... Kc5 7. Rg5+ e5! 8. Rd5+! It is not possible to mate the black king after 8. Rxg2? Ra8+! 9. Kc7 h1=Q 10. Rc2+ Kb4 11. Rb6+ Ka3 = 8... Kc4 8... Kc6 9. Rg6+ Kxd5 10. d8=Q+ +- 9. Rg4+ e4! 10. Rd4+! 10. Rxg2? h1=Q 11. Rc2+ Kb3! = 10... Kc3 10... Kc5 11. Rg5+ Kxd4 12. d8=Q+ Ke3 13. Qb6+ +- 11. Rg3+ e3! 12. Rd3+! For the 4th time repeating a step of the systematic movement. The white pawn c2 is not on a board so the black king cannot hide!
12... Kc4! 12... Kc2 13. Rxg2+ +- 13. Rg4+ Kxd3 14. d8=Q+ Ke2 15. Rxg2+ Kf1 16. Qd5! 16. Rxh2? Ra8+ = 16... h1=Q 17. Qf3+ +-
"Logical dumping of a white pawn precedes the systematic movement of four pieces." (O. Pervakov)
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Oleg Pervakov
Afek-64 JT
2016
2nd Prize
White wins
1. Rb1! Be2! 1... Bc2 2. Rf1/Rc1 f2 3. Kf3 Kh2 4. Ne5! +- 2. Nh4!! Be5+! 2... Bxd3 3. Rh1#
3. Kxe5 Bxd3! 3... f2 4. Rh1+ Kg4 5. Nf5! Bxd3 6. Ne3+ +-; 3... Kxh4 4. Kf4! Kh3 5. Ke3 +- 4. Rd1! Thematic try: 4. Rh1+? Kg3! 5. Kd4 Bc2! 6. Ke3 f2 7. Nf3 Be4!! The second bishop's sacrifice! (7... Bd3? 8. Nd2 Kg2 9. Rh5! +-) 8. Kxe4 Kg2 9. Rh2+ Kg3 10. Rh1 Kg2 positional draw 11. Kf4!? Kxh1 = (11... f1=Q?? 12. Rh2#); 4. Rb3? Bc2! (4... Bc4? 5. Rxf3+ Kxh4 6. Rf4+ +-) 5. Rc3 Kxh4 6. Rxc2 Kg3 = 4... Be2! 5. Rh1+ Kg4! 6. Nf5! f2 7. Ne3+ Kf3 8. Rh3# Ideal mate with two active blockings. Echo with 3. Rh1#, but in the middle of the board.
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