Shakkileiri 2015 tehtävät

Tehtäviä ja ratkaisuja:

Helpot sommitelmat:

[Event "Voiko musta ratsu lyödä e4-sotilaan?"] [Site "?"] [Date "2015.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [ECO "B50"] [Annotator ""] [PlyCount "11"] [SourceVersionDate "2023.01.24"] 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nxe4 $2 5. Qa4+ $1 {Valkea shakkaa ja uhkaa samalla e4-ratsua} Bd7 6. Qxe4 {ja valkealla on upseeri enemmän} *

[Event "Valkea aloittaa voittavan hyökkäyksen"] [Site "?"] [Date "2015.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "r4r2/pp2npk1/1qp1bb1p/6pP/3P4/N1B2Q1P/PP2BP2/R3R1K1 w - - 0 1"] [PlyCount "7"] [SourceVersionDate "2023.01.24"] {[#]} 1. Qxf6+ $1 {ajaa mustan kuninkaan pakoretkelle} Kxf6 ({Stockfish 15:} 1... Kh7 2. d5 Qxf2+ 3. Kxf2 Rg8 4. Bd3+ Ng6 5. hxg6+ fxg6 6. Qe7+ Bf7 7. Qxf7+ Rg7 8. Qxg7# {#7/101}) 2. d5+ $1 Kf5 3. Bg4+ ({tai} 3. Bd3+ Kf4 4. Be5+ Kf3 5. Be4#) 3... Kf4 4. Be5# *

Musta ei pelaa parhainta vastarintaa tarjoavaa siirtosarjaa edellisessä asemassa, siinä on kahdeksan siirron matti. Pitkittääkseen peliä mustan tosin tarvitsisi uhrata melkein kaikki upseerinsa: 1...Kh7 2.d5 Dxf2+ 3.Kxf2 Tg8 4.Ld3+ Rg6 5.hxg6+ fxg6 6.De7+ Lf7 7.Dxf7+ Tg7 8.Dxg7#. Tätä kommenttia ei ollut alkuperäisessä julkaisussa, sen on lisännyt näille sivuille Timo Vierjoki.

Helpot loppupelit:

[Event "?"] [Site "?"] [Date "2015.??.??"] [Round "?"] [White "Kuningas valtaa tilaa"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "8/8/6k1/8/4PK2/8/8/8 w - - 0 1"] [PlyCount "9"] [SourceVersionDate "2023.01.24"] {[#]} 1. Ke5 (1. e5 Kf7 2. Kf5 Ke7 3. e6 Ke8 {tasapelein} 4. Kf6 Kf8 5. e7+ Ke8 6. Ke6) 1... Kf7 2. Kd6 Kf6 (2... Ke8 3. Ke6 Kd8 4. Kf7 Kd7 5. e5 Kd8 6. e6 Kc7 7. e7 {voittaen}) 3. e5+ Kf7 4. Kd7 Kf8 5. e6 {ja sotilas korottuu} * [Event "?"] [Site "?"] [Date "2015.??.??"] [Round "?"] [White "Oppositio"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "8/8/8/8/5k2/5p2/5K2/8 w - - 0 1"] [PlyCount "6"] [SourceVersionDate "2023.01.24"] {[#]} 1. Kf1 Ke3 (1... Kg3 2. Kg1 f2+ 3. Kf1 Kf3) 2. Ke1 f2+ 3. Kf1 Kf3 * [Event "?"] [Site "?"] [Date "2015.??.??"] [Round "?"] [White "Sotilasmurto"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "8/ppp5/8/PPP5/6k1/8/6K1/8 w - - 0 1"] [PlyCount "9"] [SourceVersionDate "2023.01.24"] {[#]} 1. b6 $1 cxb6 (1... axb6 2. c6 bxc6 3. a6 {ja sotilas korottuu}) 2. a6 bxa6 3. c6 Kf5 4. c7 Ke6 5. c8=Q+ * [Event "?"] [Site "?"] [Date "2015.??.??"] [Round "?"] [White "Sotilaan uhraus"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "4k3/8/4KPp1/6P1/8/8/8/8 w - - 0 1"] [PlyCount "23"] [SourceVersionDate "2023.01.24"] {[#]} 1. f7+ {nopein tapa on uhrata sotilas} (1. Kd6 Kf7 2. Kd7 Kf8 3. Ke6 (3. f7 Kxf7 4. Kd6 Kf8 5. Ke6 Kg8 6. Kf6 Kh7 7. Kf7 {voittaa myös}) 3... Ke8 4. f7+ Kf8 5. Kd6 (5. Kf6 $2 {patti ja tasapeli}) 5... Kxf7 6. Kd7 {voittaa samoin }) 1... Kf8 2. Ke5 Kxf7 3. Kd6 Kf8 4. Ke6 Kg7 5. Ke7 Kg8 6. Kf6 Kh7 7. Kf7 Kh8 8. Kxg6 Kg8 9. Kh6 Kh8 10. g6 Kg8 11. g7 Kf7 12. Kh7 * [Event "?"] [Site "?"] [Date "2015.??.??"] [Round "?"] [White "Pattikuvio"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "1K6/2P5/1q6/8/4k3/8/8/8 w - - 0 1"] [PlyCount "2"] [SourceVersionDate "2023.01.24"] {[#]} 1. Ka8 (1. Kc8 $2 Kd5 2. Kd7 Qd6+ 3. Kc8 Kc6 4. Kb8 Qxc7+ 5. Ka8 Qb7#) 1... Qxc7 {valkea pelastuu tasapeliin pattikuvion avulla} (1... Qc6+ 2. Kb8 { ja asema toistuu.}) * [Event "?"] [Site "?"] [Date "2015.??.??"] [Round "?"] [White "Lähetti ja laitasotilas"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "8/3k4/8/6p1/1b6/7P/6K1/8 w - - 0 1"] [PlyCount "20"] [SourceVersionDate "2023.01.24"] {[#]} 1. h4 $1 (1. Kf3 $2 Be1 $1 2. Kg4 Bh4) (1. Kg3 Be1+ 2. Kg4 Bh4) 1... gxh4 (1... g4 2. Kg3) 2. Kh3 Be1 3. Kg2 Ke6 4. Kh3 Kf5 5. Kg2 Kg4 6. Kh2 h3 7. Kg1 Kg3 8. Kh1 Ba5 9. Kg1 Bb6+ 10. Kh1 h2 {musta ei saa lähetillään, joka on erivärinen kuin laitasotilaan korotusruutu, tasapeliä enempää.} *

Vaikeat sommitelmat:

[Event "Zt"] [Site "Yerevan (Armenia)"] [Date "1982.??.??"] [Round "5"] [White "Tseshkovsky Vitaly (RUS)"] [Black "Jussupow Artur (GER)"] [Result "1-0"] [ECO "C80"] [PlyCount "43"] [EventDate "1982.??.??"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Nc5 10. c3 d4 11. Bxe6 Nxe6 12. cxd4 Ncxd4 13. Ne4 Be7 14. Be3 Nf5 15. Qc2 O-O 16. Rad1 Nxe3 17. fxe3 Qc8 18. Nd4 Nxd4 19. exd4 Qe6 20. Ng3 f6 21. Nf5 fxe5 22. Qb3 1-0 [Event "Moscow (Russia)"] [Site "Moscow (Russia)"] [Date "1987.??.??"] [Round "?"] [White "Kaidanov Gregory S (USA)"] [Black "Anand Viswanathan (IND)"] [Result "1-0"] [ECO "D42"] [PlyCount "53"] [EventDate "1987.??.??"] [SourceVersionDate "2023.01.24"] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nc6 5. cxd5 Qxd5 6. Nf3 e6 7. Nc3 Qd8 8. Bd3 Nf6 9. O-O Be7 10. a3 O-O 11. Re1 b6 12. Bc2 Ba6 13. b4 Bc4 14. b5 Na5 15. Ne5 Rc8 16. Re3 Rc7 17. Rg3 Re8 18. Bh6 Bf8 19. Bg5 Be7 20. Bxf6 Bxf6 21. Bxh7+ Kxh7 22. Qh5+ Kg8 23. Ne4 Bd5 24. Rh3 Kf8 25. Qxf7+ Rxf7 26. Ng6+ Kg8 27. Rh8# 1-0

[Event "Cup Yugoslavia"] [Site "Herceg Novi (Yugoslavia)"] [Date "2000.??.??"] [Round "1"] [White "Popovic Petar (SRB)"] [Black "Simic Dragisa (SRB)"] [Result "1-0"] [ECO "B76"] [PlyCount "34"] [EventDate "2000.??.??"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. O-O-O Bd7 10. g4 Ne5 11. Kb1 b5 12. Bxb5 (12. Bh6 b4 13. Nd5 Nxd5 14. exd5 Qa5 15. Bxg7 Kxg7 16. h3 Rac8 17. f4 Nc4 18. Bxc4 Rxc4 19. Rhe1 Re8 20. f5 Qxd5 21. f6+ Kh8 22. Rxe7 Rxe7 23. Qh6) 12... Rb8 13. Bf1 Nxf3 $1 14. Nxf3 Nxe4 15. Nxe4 Rxb2+ 16. Kc1 Rb1+ $1 17. Kxb1 Qb8+ 1-0 [Event "?"] [Site "Moscow (Russia)"] [Date "2005.??.??"] [Round "?"] [White "Vovk"] [Black "Stepaniuk"] [Result "*"] [SetUp "1"] [FEN "5rk1/pp1bp2p/3p1np1/4n3/3NP1P1/2P1QP2/q1P5/2KR1B1R b - - 0 1"] [PlyCount "11"] [EventDate "2000.??.??"] [SourceVersionDate "2023.01.24"] {[#]} 1... Nfxg4 2. Qe2 (2. fxg4 Rxf1 3. Rdxf1 (3. Qh6 Qa1+) 3... Nc4 4. Rf8+ Kxf8 5. Qh6+ Ke8 6. Kd1 Bxg4+ 7. Ke1 Qa1+ 8. Kf2 Qxc3) 2... Rc8 3. Kd2 Qb2 4. Ke1 Qxc3+ 5. Qd2 (5. Rd2 Rc4 6. fxg4 Bxg4 {mustan voitoin}) 5... Nxf3+ 6. Nxf3 Qxf3 {Mustan voitoin} *

Vaikeat loppupelit:

[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Philidor 6:rivi"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "8/R7/8/8/3pk3/8/7r/3K4 w - - 0 1"] [PlyCount "7"] 1. Ra3 {Torni katkaisee mustan kuninkaan etenemisen} d3 2. Ra8 {Nyt torni siirtyy shakkaamaan mustan kuningasta 8-riviltä, jolloin mustan sotilas ei voi enää suojata kuningasta.} Ke3 3. Re8+ Kd4 4. Rd8+ * [Event ""] [Site "Moscow (Russia)"] [Date "1987.??.??"] [Round "?"] [White "Muller Lambrecth"] [Black "E 6.23"] [Result "*"] [SetUp "1"] [FEN "r7/8/8/1K6/8/8/p3k3/R7 w - - 0 1"] [PlyCount "11"] [EventDate "1987.??.??"] 1. Kc4 $1 (1. Kb4 $2 Kd3 2. Kc5 (2. Kb3 Rb8+ 3. Kxa2 Kc2 $19) 2... Kc3 $19) 1... Kd2 2. Kb3 Rb8+ 3. Kc4 (3. Kxa2 Kc2) 3... Rb2 4. Rh1 (4. Kd4 Rb4+ 5. Kc5 Ra4 6. Kb5 Ra8 7. Kb4 Kc2) 4... Kc2 5. Ra1 (5. Rg1 Rb8) (5. Rh2+) 5... Kd2 6. Rh1 * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Muller Lambrecth"] [Black "E 6.38"] [Result "*"] [SetUp "1"] [FEN "8/8/8/8/8/8/1r1kpK2/R7 w - - 0 1"] [PlyCount "3"] 1. Re1 $1 (1. Rh1 Rb8 {mustan voitoin}) 1... Kd3 2. Ra1 $1 (2. Rg1 Rb5 3. Ra1 Rf5+ 4. Kg2 Ra5 5. Rxa5 e1=Q) (2. Rh1 e1=Q+ 3. Kxe1 Rb1+) (2. Kf3 Rb6 3. Ra1 Rf6+ 4. Kg2 Ra6) (2. Rc1 Rb8 3. Ra1 Rf8+ 4. Kg2 Ra8 $1 5. Rb1 Kc2) * [Event "?"] [Site "Moscow (Russia)"] [Date "1987.??.??"] [Round "?"] [White "?"] [Black "Prokes"] [Result "*"] [SetUp "1"] [FEN "8/8/8/7K/2k5/3pp3/8/5R2 w - - 0 1"] [PlyCount "11"] [EventDate "1987.??.??"] 1. Kg4 e2 (1... d2 2. Kf3 Kd3 3. Ra1) 2. Rc1+ Kd4 3. Kf3 d2 4. Rc4+ $1 Kxc4 5. Kxe2 Kc3 6. Kd1 *