Chess Endgame Study Composition: WCCI 2016-18: Pavel Arestov (RUS)

(1)
Pavel Arestov
10th WCCT
2017
15-16th Place

Draw

1. Ke5 Rd5+! 2. Kxd5 Kf6 3. e7! Bxb5

Logical try: 4. e8=Q? Bxe8 5. Nxe8+ Kg5 6. Rxh2 b2! 7. Rg2+ Kf4 8. Rf2+ Ke3 9. Nf6! Kxf2! 9... b1=Q? 10. Ng4+ Kd3 11. Ne5+ Ke3 12. Ng4+ perpetual check 10. Ne4+ Ke2/Ke3 11. Nxc3+ Kd3 12. Nb1 Kc2 -+

Position B

Solution: 4. a4!! Bxa4 5. e8=Q Bxe8 6. Nxe8+ Kg6 7. Rxh2 b2 7... c2 8. Rg2+ Kh6 9. Rh2+ Kg5 10. Nd6! c1=Q 11. Nc4 Qc2! 12. Rd2! = 8. Rg2+ Kh6 9. Rh2+ Kg5 10. Rg2+ Kf4 11. Rf2+ Ke3 11... Kg3 12. Rc2 = 12. Nf6! 12. Rc2? Kd3 -+ 12... Kxf2 12... b1=Q 13. Ng4+ Kd3 14. Ne5+ Ke3 15. Ng4+ perpetual check (This line was dual-free only in the thematic try, now 15. Rf3+ also draws: 15... Kd2 16. Nc4+ Kc2 17. Na3+ =) 13. Ne4+ Ke3 14. Nxc3 Kd3 15. Nb1 Kc2

Position A

16. Na3+! = Logical study with the effect of foresight in 12 moves.

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(2)
Pavel Arestov
20th Team Championat of Russia
2018
1st Place

White wins

1. Nf5? Bxc2+! 2. Kxc2 Nb4+! 3. Qxb4 Ne1+ 4. Kxc3 d1=Q 5. Qe7+ Kg6 6. Qe6+ Kg5 =

1. Ne6? Bxc2+! (probably 1... Ne1 also draws. The computer line is 2. Ka2 Bxc2 3. Qb7+ Kg6 4. Qg7+ Kf5 5. Nd4+ Ke4 6. Nb5 Bb1+! 7. Ka3 Nc2+ 8. Ka4 Nc5+ 9. Ka5 Nb3+ 10. Kb6 Ncd4 11. Nxc3+ Kd3 12. Qg3+ Kc2 13. Qe3 d1=Q 14. Nxd1 Kxd1 =) 2. Kxc2 Nb4+! 3. Qxb4 Ne1+ 4. Kxc3 d1=Q 5. Qe7+ Kg6 6. Qg7+ Kf5 =

1. Ne8!! Bxc2+! 2. Kxc2 Nb4+! 3. Qxb4 Ne1+

4. Kxc3!! 4. Kd1? c2+ 5. Kxd2 c1=Q+! 6. Kxc1 Nd3+ = 4... d1=Q 5. Qe7+ Kg6 6. Qf6+! 6. Qg7+? Kf5 = 6... Kh5 6... Kh7 7. Qg7# 7. Ng7+ Switchback 7... Kg4 8. Qg6+ Kf4 9. Nh5+! 9. g3+? Ke3 =

a) 9... Ke3 10. Qb6+! Switchback 10... Ke2 11. Ng3#

b) 9... Ke5 10. Qf6+ Ke4 10... Kd5 11. Qd8+ +- 11. Qe6#

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(3)
Pavel Arestov
2nd TT ChessProblem.net
2017
Prize

White wins

1. Kh2!! (1. Kg2? h4! 2. gxh4 Kg4!! 3. c4 h5! zz 4. Kf2 Kf4! 5. Ke2 Ke4 6. Kd2 Kd4 =) 1... h4! 2. gxh4 Kg4 3. c4! (3. Kg2? Kxh4 =) 3... Kf4! (3... Kxh4 4. c5 +-)

Thematic try: 4. Kh3? h5! zz 5. c5 (5. Kg2 Kg4! = zz) 5... Ke5 6. Kg3 Kd5 7. Kf4 Kxc5

Position X'

8. Kg5 Kd6! 9. Kxh5 Ke7 10. Kg6 Kf8! =

Solution: 4. Kg2! zz Ke4 (4... h5 5. Kf2! Ke4 6. Kg3! zz 6... Kd4 7. Kf4 Kxc4 8. Kg5 Kd5 9. Kxh5 Ke6 10. Kg6 Ke7 11. Kg7 +-)

5. Kh3!! (5. Kg3? h5! = zz; 5. Kf2? Kd4 6. Kf3 Kxc4 7. Kg4 Kd5 8. Kh5 Ke6 9. Kxh6 Kf7 =) 5... h5 (5... Kd4 6. Kg4 Kxc4 7. Kh5 Kd5 8. Kxh6 +-) 6. Kg3! zz 6... Ke5! 7. Kf3! (7. c5? Kd5 8. Kf4 Kxc5 Position X' 9. Kg5 Kd6 10. Kxh5 Ke7 11. Kg6 Kf8 =) 7... Kd4 8. Kf4 Kxc4

Position X

9. Kg5 Kd5 10. Kxh5 Ke6 11. Kg6 Ke7 12. Kg7 Ke6 13. h5 Kf5 14. h6 +-

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(4)
Pavel Arestov
Moscow ty
2018
2nd Prize

White wins

Thematic try: 1. Rxf7? Kd1! 2. Rc7 c1=Q+ 3. Rxc1+ Kxc1 4. d4 g4 5. Nxf6 g3 6. Nh5 g2 7. Nf4 g1=N! 8. d5 Nf3 9. d6 Ng5! 10. d7

Position B

10... Nf7! 11. Ne6 Kc2 12. Ka2 Kc3 13. Ka3 Kc4 14. Ka4 Kd5 =

Solution: 1. Rg8!! Kd1! 1... Kxd2 2. Rd8+ +- 2. Rc8 c1=Q+ 2... g4 3. Kb2 +- 3. Rxc1+ Kxc1 4. d4 g4 5. Nxf6 g3 6. Nh5! g2 7. Nf4 g1=N! 7... g1=Q 8. Ne2+ +- 8. d5 Nf3 9. d6

a) 9... Ne5 10. Nd3+! Nxd3 11. d7 +-

b) 9... Nd4 10. Ne2+! Nxe2 11. d7 +-

c) 9... Ng5 10. d7 +- Now 10...Nf7 is impossible.

A logical study with the effect of foresight in 10 moves.

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(5)
Pavel Arestov
Die Schwalbe
2018

White wins

1. Be5!! 1. Bf4? Rc6+! 2. Kxc6 e1=Q! 3. Bg5+ Qe7 zz 4. Bf5 Ke8 5. Bg6+ Kf8 6. Bxe7+ Kxe7 = 1... Rc6+! 2. Kxc6! 2. Bxc6? e1=Q = 2... e1=R! Phoenix Theme 2... e1=Q 3. Bf6+ Qe7 4. Bg5! +- zz

mutual zugzwang

3. Bf6+ Re7

4. Bg4!! 4. Bg5? stalemate; 4. Kd6? stalemate; 4. Bf5? Ke8 5. Bg6+ Kf8 6. Bxh5 Re6+ = 4... hxg4 5. Kd6 Ke8 6. Bxe7 Kf7 7. Bd8! 7. Bg5? g3 8. Ke5 Kg6 = 7... g3 8. Ke5 Kg6 9. Kf4 g2 10. Bb6 Kh5 11. Kg3 +-

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(6)
Pavel Arestov
Moscow ty
2017
Special Prize

White wins

1. Rg8+! 1. Rxf2? gxf2 2. Rf8 h3 = 1... Kf4 2. Kd3! Kf3! 3. Ra4! h3 4. Rag4! g2 4... Rg2 5. Rh4 h2 6. Rf8# 5. R4g6!! 5. R4g7? Kf4 6. Rf8+ Ke5 7. Rxf2 h2 = 5... Rd2+! 5... Kf4 6. Rf8+! Ke5 7. Rxf2 h2 8. Rgf6 h1=Q 9. R2f5#