www.arves.org - Tehtäväniekka 2020

Studies awarded for the Suomi Tehtäväniekka 2020–2021

[Event "First Prize, Tehtäväniekka 2020–2021"] [Site ""] [Date ""] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1/2-1/2"] [Annotator ""] [SetUp "1"] [FEN "7K/8/1p6/1r6/1P4P1/4B3/1k6/4b1N1 w - - 0 1"] [PlyCount "17"] 
 {The white bishop sacrifices itself twice on the same square. The work leaves an aesthetic impression in both content and form.} 1. g5 (1. Ne2 $2 Kb1 $1 ( 1... Rxb4 $2 2. g5 {Compare with 1.g5! Rxb4 2.Se2}) (1... Ka3 $2 2. Nf4 Bg3 3. Kh7) 2. g5 (2. Bd4 Rxb4 3. Kh7 Kc2) 2... Re5 3. Bxb6 Rxe2 $19) (1. Nf3 $2 Bc3+ 2. Kh7 Rxb4 3. g5 b5 4. g6 Rg4) 1... Kc2 (1... Rxb4 2. Ne2 Re4 (2... b5 3. g6) 3. Bxb6 Rxe2 4. Bd4+) 2. g6 Kd3 3. Bd4 $1 (3. Bh6 $2 Rh5 4. Kh7 Bd2) (3. g7 Kxe3 4. g8=Q Rh5+ 5. Kg7 Rg5+ 6. Kf7 Rxg8 7. Kxg8 Bxb4) 3... Bxb4 (3... Rh5+ 4. Kg7 Kxd4 5. Nf3+ Kd5 6. Nxe1 Ke6 7. Nf3 Ke7 8. Nd4 Rd5 9. Nf3 Rf5 10. Nd4 $11) (3... Kxd4 4. Nf3+ Ke4 (4... Kc3 5. Nxe1 Rg5 6. g7 Kxb4 $11) 5. Nxe1 Rh5+ 6. Kg7 (6. Kg8 $2 Rh1 7. Nc2 Rc1 8. Na3 Kf5 $19) 6... Rh1 7. Nc2 Kd3 8. Na3 Ra1 9. Nb5 Kc4 10. Nd6+ $11) 4. Nf3 (4. g7 $2 Rh5+ 5. Kg8 Kxd4) 4... Rf5 (4... Ke4 5. g7 Rh5+ 6. Kg8 Kxf3 7. Kf7 Rf5+ 8. Kg6 Rf4 9. Bxb6) 5. Bxb6 (5. g7 $2 Rxf3 6. g8=Q Rh3+ 7. Kg7 Rg3+ $19) 5... Rxf3 6. Bd4 $1 Kxd4 7. g7 Rh3+ 8. Kg8 Kd5 9. Kf7 $11

[Event "2nd HM, Tehtäväniekka 2020–2021"] [Site ""] [Date ""] [Round ""] [White "Peter S. Krug & Mario G.Garcia"] [Black ""] [Result "1/2-1/2"] [Annotator ""] [SetUp "1"] [FEN "8/8/8/8/3n1n2/2p1k1p1/8/R3K2R w - - 0 1"] [PlyCount "35"] 
 {White holds on in spite of black's various efforts; the battle is prolonged and more stubborn, in comparison with Osintsev Ke5/Kf1 2010 and Akobia Kh6/Ka1 2007.} 1. Ra2 {0-0/0-0-0? Sde2/Sfe2+ -+} g2 (1... c2 2. Rxc2 Nxc2+ 3. Kd1 Kd3 4. Rh8 $1 $11 (4. Rg1 Ne3+ 5. Ke1 Nfg2+ $19) (4. Rh7 Ne3+ 5. Kc1 Nf5 $19) 4... Ne3+ 5. Kc1 (5. Ke1 $4 Nfg2#)) 2. Rxg2 Nxg2+ 3. Kf1 Nh4 4. Rh2 (4. Rxh4 $2 c2 5. Rh3+ Nf3 $19) 4... Nhf3 (4... Kd3 5. Rh3+ Nhf3 6. Kf2 Kd2 7. Rh5 {/Th8=}) 5. Rh8 (5. Rh7 Nc6 6. Kg2 Ne1+ 7. Kf1 c2 $19) 5... Ne5 (5... Nc6 6. Kg2 Ne1+ 7. Kf1 Nd3 8. Rh2 Nd4 9. Ra2 $11 (9. Rg2 $11)) 6. Rh2 Ke4 7. Rh4+ Kd3 8. Rh3+ Ndf3 9. Kg2 (9. Rh1 $2 Kd2 10. Rh7 Nc4 $19) 9... Kd2 10. Rh8 (10. Rh7 $2 Nd4 11. Kf1 Nf5 $19) 10... Nd4 11. Kf1 (11. Ra8 $2 Nc4 $19) 11... Nc4 (11... Nf5 12. Rd8+ $1 $11) 12. Rh2+ Kd3 (12... Kd1 13. Rh3 Nf3 14. Kf2 Nce5 15. Rh7 $11 (15. Rh8 $11)) 13. Rh3+ Ne3+ 14. Kf2 Ndf5 {During the solution the knights form different structures to prevent the WR from capturing the c-pawn, but white overcomes them.} 15. Rh1 Kd2 16. Ra1 (16. Kf3 $2 Nd4+ 17. Ke4 Ne2 18. Ra1 c2 $19) 16... Nd1+ (16... Nd4 17. Ra2+ Ndc2 18. Ra7 $11 (18. Ra8 $11)) (16... Nc4 17. Kf3 Nb2 18. Ra7 $11 (18. Ra8 $11)) 17. Kf3 Nd4+ 18. Ke4 $11 *

[Event "special HM, Tehtäväniekka 2020–2021"] [Site ""] [Date ""] [Round ""] [White "Pavel Arestov"] [Black ""] [Result "1-0"] [Annotator ""] [SetUp "1"] [FEN "6K1/4R3/8/7k/q3P3/3P3P/3N4/2B1b3 w - - 0 1"] [PlyCount "41"] 
 {A successful variation of previous works, with the material R+B+N+p vs. Q, some of them by this very composer (Arestov, Kg8/Kf1 2020; Arestov & Zhukov, Kg4/Kb1, 2019)} 1. Nf3 (1. Rh7+ Kg6 2. Rg7+ Kh5 3. Nf3 Qe8+ 4. Kh7 Bh4 $11) 1... Qa2+ (1... Qa8+ 2. Kg7 Bc3+ 3. d4 Bxd4+ 4. Nxd4 {see main line}) 2. Kh8 ( 2. Kh7 Bg3 3. Rg7 Bf4 4. Bxf4 Qg8+ $11) 2... Qa8+ (2... Qa1+ 3. Kh7 Qxc1 4. Re5+ $18) (2... Bd2 3. Rh7+ Kg6 4. Rg7+ Kh5 5. Nxd2 Qc2 6. Nf1 Qxc1 7. Ng3+ Kh4 8. Nf5+ $18) (2... Bg3 3. Rh7+ Kg6 4. Rg7+ Kh5 5. Rxg3 $18) 3. Kg7 (3. Kh7 Bc3 4. d4 Bxd4 5. Nxd4 Qxe4+ 6. Rxe4 $11) 3... Bc3+ 4. d4 Bxd4+ 5. Nxd4 Qxe4 6. Ne6 (6. Rxe4 $2 {stalemate}) 6... Qb4 7. Kg8 (7. Bg5 $2 Qxe7+ 8. Bxe7 $11 { stalemate}) (7. Kf8 Kh4 8. Ng5 Kh5 9. Be3 Kg6 $11) (7. Kh8 Qc3+ 8. Ng7+ Kg6 9. Re6+ Kf7 $11) 7... Qb8+ (7... Qxe7 8. Nf4+ $1 {9.Sd5/Sg6+ +-}) 8. Kf7 (8. Nf8 Qg3+ $11) 8... Kh4 9. Ng5 Kh5 10. Be3 (10. Bd2 Qb5 $11) 10... Qb5 11. Re6 Qd7+ 12. Kf6 Qb5 13. Re5 Qc6+ 14. Kf5 Qf3+ $1 15. Bf4 $1 (15. Nxf3 $2 {stalemate}) 15... Qd3+ 16. Kf6 (16. Re4 Qd5+ 17. Re5 Qd3+ {is a waste of time.}) 16... Qd8+ 17. Kg7 Qd7+ 18. Nf7+ Kh4 19. Re3 Qd4+ 20. Ne5 Qxf4 21. Ng6+ $18 *

[Event "1st comm, Tehtäväniekka 2020–2021"] [Site ""] [Date ""] [Round ""] [White "Peter Krug & Mario G. Garcia"] [Black ""] [Result "1/2-1/2"] [Annotator ""] [SetUp "1"] [FEN "8/8/8/r4n2/4k3/6p1/6R1/1N5K w - - 0 1"] [PlyCount "27"] 
 {White succeeds in his defensive task against superior force; even after the black pawn is eliminated, accuracy and caution are required.} 1. Nd2+ (1. Rb2 Ne3 2. Nd2+ (2. Nc3+ Kf3 $19) 2... Kd3 3. Nf3 Rf5 4. Ne1+ Kc3 $19) 1... Kf4 2. Nf1 Kf3 (2... Ra1 3. Rg1 Ra2 4. Rg2 Ra7 5. Rb2 Ra1 6. Rb4+ Kf3 7. Rb3+ Kf2 8. Rb2+ Kxf1 9. Rb1+ $1 Rxb1 {stalemate}) 3. Nh2+ (3. Rb2 Ne3 4. Nd2+ Kg4 5. Kg1 Kh3 6. Rb1 Ra2 7. Ne4 Re2 8. Ng5+ Kg4 $19) 3... Kf4 4. Nf1 (4. Rb2 Ne3 $19) 4... Kf3 5. Nh2+ gxh2 6. Rg5 $1 (6. Kxh2 $2 Ne3 7. Rg3+ Kf2 $19) 6... Kf4 (6... Ng3+ 7. Rxg3+ $11) 7. Rg2 (7. Rg8 Nh6 $19) 7... Ne3 (7... Nh4 8. Ra2 $11) 8. Ra2 Rc5 9. Kxh2 Kf3 10. Ra3 (10. Ra1 Ng4+ 11. Kg1 Rc2 12. Rf1+ Kg3 13. Rf7 Rc1+ 14. Rf1 Rc8 $19) 10... Rb5 11. Rd3 Rb7 12. Ra3 Kf2 13. Ra2+ Kf3 14. Ra3 $11 *

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