Daily Chess Puzzles (+) ROCK 04/05/2020

Daily Chess Puzzles (+) ROCK 04/05/2020

 

Nyerj világossal – White to move and win.

[Event “Paul Morphy chess composition.]
[Site “?”]
[Date “????.??.??”]
[Round “?”]
[White “White to move and win”]
[Black “?”]
[Result “*”]
[SetUp “1”]
[FEN “kbK5/pp6/1P6/8/8/8/8/R7 w – – 0 1”]
[PlyCount “3”]


megoldás

[Event “Paul Morphy chess composition.

[Site “?”] [Date “????.??.??”] [Round “?”] [White “White to move and win”] [Black “?”] [Result “*”] [SetUp “1”] [FEN “kbK5/pp6/1P6/8/8/8/8/R7 w – – 0 1”] [PlyCount “3”]

1. Ra6 bxa6 2. b7# 1-0

[Event “Mario Matous, 1988”]
[Site “?”]
[Date “????.??.??”]
[Round “?”]
[White “White to move and win”]
[Black “?”]
[Result “*”]
[SetUp “1”]
[FEN “5B2/5n2/2p5/7p/4N2k/8/qpp3PP/2R1R2K w – – 0 1”]
[PlyCount “13”]


megoldás

[Event “Mario Matous, 1988”] [Site “?”] [Date “????.??.??”] [Round “?”] [White “White to move and win”] [Black “?”] [Result “*”] [SetUp “1”] [FEN “5B2/5n2/2p5/7p/4N2k/8/qpp3PP/2R1R2K w – – 0 1”] [PlyCount “13”]

1. h3

(1. Be7+ Kg4 2. Rf1 h4)

(1. h3 bxc1=Q 2. Be7+ Qg5 3. Kh2 Qb3 4. g3+ Qbxg3+ 5. Nxg3 Qxe7 6. Nf5+ Kg5 7. Nxe7)

{1. h3 1. Fe7+ nem lett volna jó, mert következik1. …, Kg4 2. Bf1, h4 1… , b:c1V 1…, Ve6 2. Kh2, Ve5+ 3. g3+ és sötétnek vezért kell áldozni, hogy megmentse királyát. 2. Fe7+, Vg5 3. Kh2, c1V 3…, V:e7 lépésre 4. g3 matt, vagy 3…, Vb3 4. g3+, V:g3+ 5. H:g3, V:e7 6. Hf5+ és sötét vezér nélkül marad. 4. Hd2 elzárja a második sort a sötét vezér előtt, és közben fenyeget 5. Hf3 mattal. 4. …, V:ad2 4…, V:cd2 lépésre 5. Be4+, Vf4+ 6. B:f4 matt következik. 5. Be4+ Három tehetetlen sötét vezér, miközben királyuk végleg beszorul a matthálóba. 5. …,Vf4+ 6. g3 matt, a sok vezér között a kis gyalog pontot tesz a játszma végére, 1-0.} 1. h3 *

[Event “Ceskoslovensky Sach#412”] [Site “?”] [Date “1968.??.??”] [Round
“?”] [White “Matous, Mario”] [Black “White to play and win”] [Result “1-0”]
[Annotator “Stephenson,Brian”] [SetUp “1”] [FEN “6br/1P2Ppk1/1p2p3/p3P1KP/P4P2/q2p1P2/8/8
w – – 0 1”] [PlyCount “43”] [EventDate “1968.??.??”]


megoldás

[Event “Ceskoslovensky Sach#412”] [Site “?”] [Date “1968.??.??”] [Round “?”] [White “Matous, Mario”] [Black “White to play and win”] [Result “1-0”] [Annotator “Stephenson,Brian”] [SetUp “1”] [FEN “6br/1P2Ppk1/1p2p3/p3P1KP/P4P2/q2p1P2/8/8 w – – 0 1”] [PlyCount “43”] [EventDate “1968.??.??”] {Black has a great material advantage, but his rook, bishop and king are awkwardly placed. White has two pawns on the verge of promotion and they must not be wasted.} 1. e8=N+ $1 (1. e8=Q $2 {is not forcing enough. After} Qc5 $1 { Black has all the play.}) 1… Kh7 ({If} 1… Kf8 2. b8=Q Rxh5+ (2… — {The threat of} 3. Nf6+ Kg7 4. h6+ Rxh6 5. Qxg8# {wins the game quickly for White.}) 3. Kxh5 Bh7 4. Kh6 Ke7 5. Nf6 Qxa4 6. Qc7+) 2. h6 {The mate threat on f6 forces the black queen to e7, after which White can force its eventual exchange, leading to a position where Black is almost completely tied up.} Qe7+ 3. Nf6+ Qxf6+ 4. Kxf6 d2 5. b8=Q d1=Q 6. Qf8 Qg1 7. Qg7+ Qxg7+ 8. hxg7 b5 $1 ({ In this position, and for the next few moves, Black must not move his king, else he gets mated in a few moves, as this line shows} 8… Kh6 9. gxh8=Q+ Bh7 10. Qg7+ Kh5 11. Qxh7#) 9. axb5 a4 10. b6 a3 11. b7 a2 12. b8=N $1 {White makes his second underpromotion to a knight.} ({Promotion to queen is again not forcing enough:} 12. b8=Q $2 a1=Q 13. gxh8=Q+ Kxh8 14. Qf8 Qg1 15. Qh6+ Bh7 16. Kxf7 Qg8+ 17. Ke7 (17. Kf6 Qd8+ 18. Kf7 Qd7+ 19. Kf8 Qd8+ 20. Kf7 Qd7+ { draws by repetition.}) 17… Qg7+ (17… Qf7+ 18. Kd6 {draws.}) 18. Qxg7+ Kxg7 19. Kxe6 {and Black can hold back the pawns and draw.}) 12… a1=Q ({The threat was} 12… — 13. Nd7 a1=Q 14. Nf8+ Kh6 15. gxh8=Q+ Bh7 16. Qxh7#) 13. Nd7 Qa8 ({Or} 13… Qa3 {which leads to the same.}) 14. Nf8+ Qxf8 15. gxf8=R $1 {This third underpromotion is the only way to win.} (15. gxf8=Q $2 {is stalemate.}) 15… Kh6 16. Rd8 Kh5 17. Kg7 Rh7+ 18. Kxg8 Kh6 19. Rd1 Rg7+ 20. Kf8 Rg2 21. Kxf7 Rh2 22. Kxe6 {and wins.} 1-0

[Event “1.p Polasek-50 JT Vlasak-50 JT Ceskoslo”] [Site “?”] [Date “2007.??.??”]
[Round “?”] [White “Matous, Mario”] [Black “White to play and win”] [Result
“1-0”] [SetUp “1”] [FEN “8/q7/8/2pp4/5K2/8/2RN1B1k/8 w – – 0 1”] [PlyCount
“13”] [EventDate “2007.??.??”]


megoldás

[Event “1.p Polasek-50 JT Vlasak-50 JT Ceskoslo”] [Site “?”] [Date “2007.??.??”] [Round “?”] [White “Matous, Mario”] [Black “White to play and win”] [Result “1-0”] [SetUp “1”] [FEN “8/q7/8/2pp4/5K2/8/2RN1B1k/8 w – – 0 1”] [PlyCount “13”] [EventDate “2007.??.??”] 1. Nf3+ Kh1 $1 (1… Kh3 2. Ng5+ Kg2 3. Bxc5+) 2. Bd4 $3 ({This spectacular move cannot be replaced by} 2. Bxc5 $2 Qa4+ 3. Nd4 Qxd4+ $1 4. Bxd4 {stalemate. }) 2… Qf7+ $1 ({After} 2… Qc7+ $2 {White’s material advantage decides, for example} 3. Ne5 Qc8 (3… Qb8 4. Rb2 $1 Qf8+ 5. Kg3 Qg7+ 6. Ng4 Qc7+ 7. Be5 Qh7 8. Rd2) 4. Kg3 Qg8+ 5. Ng4 Qb8+ 6. Kh3 Qb3+ 7. Rc3 Qb1 8. Nf2+ Kg1 9. Ne4+ cxd4 10. Rg3+ Kf1 11. Nd2+) ({Bad is} 2… Qb8+ 3. Be5 Qf8+ 4. Ke3 Qh6+ 5. Kf2 c4 6. Ra2 Qb6+ 7. Bd4 Qb1 8. Ra1) 3. Ke3 $3 (3. Kg3 $2 Qg6+ {costs the rook.}) 3… cxd4+ 4. Kf2 $1 Qf4 5. Rc6 $3 {Reciprocal zugzwang, as the queen has surprisingly no good squares.} ({Very bad is} 5. Re2 $2 Qe3+) ({Other attacking rook moves lead to a perpetual check:} 5. Ra2 $2 Qc1 6. Kg3 (6. Ra8 Qc2+ 7. Kg3 Qg6+ 8. Kf2 Qc2+) 6… Qc7+ 7. Kf2 Qc1) ({Or} 5. Rc8 $2 Qe3+ 6. Kg3 Qh6 7. Kf2 Qe3+ 8. Kg3 Qh6) {A pawn has to move and obstruct the important diagonal b1-h7 in two echo lines:} 5… d3 (5… Qe3+ 6. Kg3 {Another reciprocal zugzwang.} d3 7. Ra6 $1 Qc1 8. Ra7 $1) 6. Rc8 $1 Qh6 7. Rb8 $1 { wins.} 1-0

[Event “1.hm Szachy#0645 (v)”] [Site “?”] [Date “1975.??.??”] [Round
“?”] [White “Matous, Mario”] [Black “White to play and win”] [Result “1-0”]
[SetUp “1”] [FEN “n2Bqk2/5p1p/5KP1/p7/6Q1/8/8/8 w – – 0 1”] [PlyCount
“25”] [EventDate “1975.??.??”]


megoldás

[Event “1.hm Szachy#0645 (v)”] [Site “?”] [Date “1975.??.??”] [Round “?”] [White “Matous, Mario”] [Black “White to play and win”] [Result “1-0”] [SetUp “1”] [FEN “n2Bqk2/5p1p/5KP1/p7/6Q1/8/8/8 w – – 0 1”] [PlyCount “25”] [EventDate “1975.??.??”] {It is difficult to believe, but White actually has a forced mate here.} 1. Qc8 $1 {Threatening mate in two with Be7+ and Qxe8#.} {Forced.} Kg8 (1… Qe6+ 2. Qxe6 fxe6 3. gxh7) (1… Nc7 2. Be7+ Kg8 3. gxf7+) {Could anyone ever believe that White must now play} 2. Bc7 $3 {which looks completely suicidal.} Qxc8 ( 2… Nxc7 3. gxf7+) 3. gxf7+ Kh8 {Black is a queen and pawn up, but your engine will now tell you: White mates in ten moves!} (3… Kf8 4. Bd6#) 4. Be5 $1 {[%cal Gf6e7,Gf6g5] Threatening 5.Ke7 or Kg5 mate.} Qc5 $1 {[%csl Rf8] Protects against 5.f8Q# and threatens to draw with QxBe5+.} 5. Bb2 $1 { Threatening 6.Ke6+ and mate.} (5. Ba1 $2 Nc7 6. Bb2 a4 7. Ba1 a3) 5… Nc7 $1 6. Ba1 $1 {[#]Black is in zugzwang: any move by the queen or knight leads to a quick mate. So only the pawn is left to move.} a4 7. Bb2 a3 8. Ba1 a2 9. Bb2 a1=Q 10. Bxa1 {and now the zugzwang is complete, Black has no moves left.} Nd5+ 11. Ke6+ Nc3 12. Bxc3+ Qxc3 13. f8=Q# 1-0