Analysis / Games

You Tube Chess Puzzle

The following is a You Tube chess puzzle video for your enjoyment. Thanks to Roger Pedersen for unearthing this one.


Chess Openings

English Opening -Halloween Gambit - (here’s one I never heard of before …)
Kings Indian Defense
Lasker’s Trap (Queens Gambit / Albin Counter Gambit) - Thanks to Matt Pullin a self-proclaimed software engineer and chess player, who posted this intriguing video on You Tube.

Petroff Defence - Philidor Defence - The Pirc -Scandinavian Defense

Sicillian Defense


Chess Problems & Solutions

Problem #1 – Black to Move (mate in 3) – Pedersen-Winokur

[Elmwood Park - Mel Rappaport Memorial Swiss]

Pedersen-Winokur - mate in 3

After 39. Rf3 (see solution below)

Problem #2 – White to Move and win - Feuerstein-Seidman

[from the 1957 US Championship as noted in the 12/07 Chess Life magazine]

Feuerstein-Seidman

Problem #3 – Black to Move – Winokur – Pascalicchio

[April Fool's Swiss - Round 3, April 2008]

Black to Move and win.

Problem #4 – Black to Move – Bloise – Kaudern

[April Fool's Swiss - Round 5, April 2008]

Bloise-Kaudern

Problem #5 – Black to Move - Pedersen-Kushner

[Hard Labor Swiss - Round 5, September 2008]

Problem #6 Black to Move - Pedersen-Kushner

[Hard Labor Swiss - Round 5, September 2008]

Problem #7 White to Move - Pedersen-Kushner

[Hard Labor Swiss - Round 5, September 2008]

Problem #8 Black to Move – Zonenberg-Winokur

[Goodbye to Summer Swiss - Round 1, September 2009]

… as viewed from the black side of the board …

Zonenberg-Winokur_36Qg4


Problem #9 – White to Move – Tkachiev-Lagrave

To see the full transcript of this game, click the following link:

http://www.chessgames.com/perl/chessgame?gid=1426743

Tkachiev-Lagrave



Problem #10 – White to Move – Winokur-Rubenfeld

[Turkey Trot Swiss - Round 5]

Problem #11 – Black to Move – Longinus vs. ColdFire

[Internet Chess Club 5 minute Blitz Game]

Problem #12 – Black to Move – Rubenfeld vs. Pedersen

[Suffern Autumn Leaves Swiss 2010]

Problem #13 – White to Move – Winokur vs. Vilotijevic

[Suffern Autumn Leaves Swiss 2010]

Problem #14 – White to Move – Freel vs. Pedersen

[Suffern Hurricane Season Swiss 2011]

(see solutions below)


Solutions:

Problem #1: (38. … Rch2  39. f5+ Kg5  40. Rf2 R8h3#), note: in the actual game black chose 38. … Rhh2? and the game continued 39. Rf1 Rhg2 40. Kf3 etc. 1/2 – 1/2

Problem #2: (1. Re7! Re7 2. Rxf6 – threatens both 3. Rf8 mate and 3. Rxc6)

Problem #3: after 18. c4?? black should reply … Bf2! and win a piece (note: the continuation 19. Kf2?? only makes it worse after de and 19. Be4  Re4, which snags the other bishop due to the Queen’s pin on the king).

Problem #4: White has just played 26. Be3 to block the revealed check (after the black Knight moved from f2 with 25. Ne4).  In the game, black played 26. … Be3+, missing the following tactic – 26. … Nd2!  27. Qc1 Nf3+, winning the other Rook.  After this black can follow with Be3+, further reducing white’s material.

Problem #5: The best continuation for black is 35. … f3!, (threatening Nf6 which wins the bishop).  The best continuation for white is … 36. c4 bc 37. bc Nf4 38. Bf3 Nf3 39. Ke3 Nh3 40. Kf3 but black will have solidified his advantage.  In the actual game, black missed this opportunity and chose 35. … h3

Problem #6: The missed shot was 49. … f3! which forces off a piece.  A possible continuation would be 50. Nf2 ef 51. Bh3 Nf5 etc.  The full line is noted in the analysis of Pedersen-Kushner noted above.

Problem #7: Black overlooked mate in 1, and has just queened a pawn.  The finish is 51. c3 # (note: black could have remained even by underpromoting and choosing a Knight)

Problem #8: (note: this problem is setup from the black point of view) White had less then 3 minutes on his clock and had just played Qg4 to try and break the pin.  The reply Ne3!, capturing the Knight and offering the queen, ends the game because black’s checkmate threat can only be stopped by a sacrifice of material by white.

Problem #9: Black has just pushed a pawn to drive the Knight away, but missed the surprising reply – Nc6!  Black played … bc (pawn takes Knight), and was crushed by the x-ray attack Rd7.  All he could do at this point was resign.

Problem #10: In a drawish endgame, black played Kh5 in an effort to eliminate one of white’s pawns.  Unfortunately, he has also trapped his king and after Ne6, it’s mate in 1 – on either Ng7 or Nf4.

Problem #11: White has just retreated his rook from f4 to f1.  Black forced the win after:  25. … g4 26. Rd4  Rh3+  27. Kg2?? e3+  28. Kg1 Rh1 mate (note: it’s still mate even if white chose 27. Kg1, because e4 28. Rf3 Bf3 29. Ke1 Re1).

Problem #12: White has just played 31. Qe1. Black replied Qe4, threatening mate on c2 and winning material. Note that Kb3 doesn’t work as mate occurs after Qc4.

Problem #13: Black played 40. …Kg5 and white missed the game winner, blundering with Rc6?? The correct move was 41. f4!+ forcing the king to h5. After 42. Bf3+ Ng4 (forced), the Rook will fall.

Problem #14: White played 49. hg?? and the game was soon lost after … 50. Kf3 h4 51. gh gh 52. Kg4 Ke4.  Amazingly, the very move that led to black’s victory should have resulted in his downfall. The winning path was 49. g4!! followed by … gh 50. gh h3 51. Kf2 f5 52. Kg3 f4 53. Kh3 after which white will Queen. Note that 49. … hg is no better because … 50. h5 Kf5 51. c4! bc 52. bc Ke6 53. h6 Kf7 54. c5 Kg6 55. c6 and black cannot stop the two white passers.


Comments
  1. Fred says:

    Just saw the exciting games you annotate. Wow. I am impressed

  2. Fred says:

    The Pederson-Kushner game was one of our best. Exciting to the end!

    Surprise endings are always fun!

  3. oger E Pedersen says:

    [Event "Suffern CC Hurricane Season Swiss"]
    [Date "2011.10.12"]
    [Round "5"]
    [White "Gerald Freel, 1752."]
    [Black "Roger E Pedersen, 1939."]
    [Result "0-1"]
    [ECO "B18"]

    {B18: Classical Caro-Kann: 4…Bf5 sidelines} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4.
    Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 e6 {last book move} 7. Ne5 Ne7 (7… Nd7 8. f4 $11)
    8. Nxg6 $14 Nxg6 {White has the pair of bishops} 9. Be2 c5 10. dxc5 Qxd1+ 11.
    Bxd1 Bxc5 12. O-O {White castles and improves king safety} Nc6 13. c3 {
    Prevents intrusion on b4} O-O {Black castles and improves king safety} 14. Bf3
    Rac8 15. Ne4 {White threatens to win material: Ne4xc5} Be7 16. Be3 (16. Be2 f5
    17. Ng5 Bxg5 18. Bxg5 f4 $11) 16… b6 {Consolidates c5} (16… f5 $5 17. Nc5
    f4 18. Nxe6 Rf6 19. Bxa7 Nxa7 $15) 17. Rad1 $14 Nce5 18. Be2 Rcd8 19. Bg5 (19.
    f4 $142 $5 {should be investigated more closely} Nd7 20. g3 $14) 19… Bxg5 $11
    20. Nxg5 Nf4 {Black threatens to win material: Nf4xe2} 21. Bb5 Nd5 (21… f6 $5
    {should not be overlooked} 22. Ne4 a6 23. Bxa6 Ra8 $15) 22. Rfe1 {
    White threatens to win material: Re1xe5} Ng6 23. Nf3 Nc7 {
    Black threatens to win material: Nc7xb5} 24. Ba4 Na6 25. Rxd8 (25. Bc2 Ne7 $14)
    25… Rxd8 $11 26. Rd1 Rxd1+ 27. Bxd1 {A minor pieces endgame occured} Nf4 28.
    Bc2 Nc5 29. Ne1 h6 30. g3 {White threatens to win material: g3xf4} Nd5 31. Nf3
    Kf8 32. Nd4 Ne7 33. Kf1 a5 34. Ke2 Ke8 35. f4 Kd7 36. Ke3 Nc6 37. Nxc6 Kxc6 38.
    Kd4 f6 39. Be4+ Kd6 40. Bc2 Kc6 (40… e5+ 41. Ke3 $11) 41. Be4+ (41. b4 $142
    $5 {is an interesting idea} axb4 42. cxb4 $16) 41… Nxe4 $11 42. Kxe4 {
    A pawn endgame occured} Kc5 43. h3 b5 44. h4 h5 45. Kd3 Kd5 46. b3 e5 47. fxe5
    Kxe5 48. Ke3 (48. c4 $142 bxc4+ 49. Kxc4 $18) 48… g5 $4 {
    forfeits the advantage} (48… g6 $142 $11) 49. hxg5 $4 {gives away a clear win
    } (49. g4 gxh4 50. gxh5 $18) 49… fxg5 $19 50. Kf3 h4 51. gxh4 (51. g4 {
    is not the saving move} a4 $19) 51… gxh4 52. Kg4 (52. Ke3 {
    doesn’t change anything anymore} a4 $19) 52… Ke4 53. Kxh4 Kd3 54. a4 bxa4 55.
    bxa4 Kxc3 56. Kg3 Kb3 57. Kf2 Kxa4 58. Ke2 Kb3 0-1

    [Event "Suffern CC Hurricane Season Swiss"]
    [Site "?"]
    [Date "2011.10.12"]
    [Round "?"]
    [White "Gerald Freel, 1752."]
    [Black "Roger E Pedersen, 1939."]
    [Result "0-1"]
    [ECO "B18"]
    [Annotator "Fritz 8 (60s)"]
    [PlyCount "116"]

    {B18: Classical Caro-Kann: 4…Bf5 sidelines} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4.
    Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 e6 {last book move} 7. Ne5 Ne7 (7… Nd7 8. f4 $11)
    8. Nxg6 $14 Nxg6 {White has the pair of bishops} 9. Be2 c5 10. dxc5 Qxd1+ 11.
    Bxd1 Bxc5 12. O-O {White castles and improves king safety} Nc6 13. c3 {
    Prevents intrusion on b4} O-O {Black castles and improves king safety} 14. Bf3
    Rac8 15. Ne4 {White threatens to win material: Ne4xc5} Be7 16. Be3 (16. Be2 f5
    17. Ng5 Bxg5 18. Bxg5 f4 $11) 16… b6 {Consolidates c5} (16… f5 $5 17. Nc5
    f4 18. Nxe6 Rf6 19. Bxa7 Nxa7 $15) 17. Rad1 $14 Nce5 18. Be2 Rcd8 19. Bg5 (19.
    f4 $142 $5 {should be investigated more closely} Nd7 20. g3 $14) 19… Bxg5 $11
    20. Nxg5 Nf4 {Black threatens to win material: Nf4xe2} 21. Bb5 Nd5 (21… f6 $5
    {should not be overlooked} 22. Ne4 a6 23. Bxa6 Ra8 $15) 22. Rfe1 {
    White threatens to win material: Re1xe5} Ng6 23. Nf3 Nc7 {
    Black threatens to win material: Nc7xb5} 24. Ba4 Na6 25. Rxd8 (25. Bc2 Ne7 $14)
    25… Rxd8 $11 26. Rd1 Rxd1+ 27. Bxd1 {A minor pieces endgame occured} Nf4 28.
    Bc2 Nc5 29. Ne1 h6 30. g3 {White threatens to win material: g3xf4} Nd5 31. Nf3
    Kf8 32. Nd4 Ne7 33. Kf1 a5 34. Ke2 Ke8 35. f4 Kd7 36. Ke3 Nc6 37. Nxc6 Kxc6 38.
    Kd4 f6 39. Be4+ Kd6 40. Bc2 Kc6 (40… e5+ 41. Ke3 $11) 41. Be4+ (41. b4 $142
    $5 {is an interesting idea} axb4 42. cxb4 $16) 41… Nxe4 $11 42. Kxe4 {
    A pawn endgame occured} Kc5 43. h3 b5 44. h4 h5 45. Kd3 Kd5 46. b3 e5 47. fxe5
    Kxe5 48. Ke3 (48. c4 $142 bxc4+ 49. Kxc4 $18) 48… g5 $4 {
    forfeits the advantage} (48… g6 $142 $11) 49. hxg5 $4 {gives away a clear win
    } (49. g4 gxh4 50. gxh5 $18) 49… fxg5 $19 50. Kf3 h4 51. gxh4 (51. g4 {
    is not the saving move} a4 $19) 51… gxh4 52. Kg4 (52. Ke3 {
    doesn’t change anything anymore} a4 $19) 52… Ke4 53. Kxh4 Kd3 54. a4 bxa4 55.
    bxa4 Kxc3 56. Kg3 Kb3 57. Kf2 Kxa4 58. Ke2 Kb3 0-1

  4. oger E Pedersen says:

    A Farewell to King’s Swiss
    [Date "2011.10.26"]
    [Round "2"]
    [White "Lazar Vilotijevic, 1929."]
    [Black "Roger E Pedersen, 1940."]
    [Result "1/2-1/2"]
    [ECO "B13"]

    {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack} 1. e4 c6 2. d4
    d5 3. exd5 cxd5 4. Bd3 Nf6 {last book move} 5. h3 g6 6. Nf3 Bg7 7. c3 O-O {
    Black castles and improves king safety} 8. O-O Nbd7 9. Na3 a6 {Secures b5} 10.
    Re1 Re8 {Black has a cramped position. Black’s piece can’t move: c8} 11. Bf4
    Qb6 {Black threatens to win material: Qb6xb2} 12. Qd2 Nf8 {
    Black has a cramped position} 13. Ne5 N6d7 {Black’s piece can’t move: c8} (
    13… Bf5 14. Nc2 $14) 14. Ng4 $14 f5 (14… Ne6 $5 {
    is an interesting alternative} 15. Bg3 Nf6 $14) 15. Nh6+ $16 Bxh6 16. Bxh6 Nf6
    17. Qe2 Ne6 18. Rab1 Qc7 (18… Qd6 19. Nc2 $16) 19. Qe5 (19. Nc4 $5 $18) 19…
    Qxe5 20. Rxe5 Nd8 21. Bg5 Be6 22. Rbe1 Ne4 23. Bxe4 (23. Bh4 Bf7 24. Rxe7 Rxe7
    25. Bxe7 Nc6 $16) 23… fxe4 (23… dxe4 $5 {must definitely be considered} 24.
    d5 Nf7 25. Rxe6 Nxg5 $14) 24. f3 Bf7 25. Rxe7 (25. fxe4 Nc6 26. Rxd5 Bxd5 27.
    exd5 Na7 $18) 25… Rxe7 26. Bxe7 Nc6 27. Bg5 exf3 28. gxf3 Kg7 29. Kg2 Re8
    1/2-1/2

  5. Roger says:

    IM Dmitry S. London,2373 – Roger E. Pedersen,1950 [B19]
    Dr David Ostfeld Memorial Early Winter, 11.12.2011
    [Fritz 13 (120s)]
    B19: Classical Caro-Kann: 4…Bf5 main line 1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nf3 e6 7.h4 h6 8.h5 Bh7 9.Bd3 Bxd3 10.Qxd3 Nf6 11.Bf4 Qa5+ 12.Bd2 Bb4 13.c3 Bd6 14.c4 Bb4 last book move. White has a very active position 15.0–0 Bxd2 16.Nxd2 0–0 17.c5 White has a new backward pawn: d4 17…Rd8 18.Qc2 White has an active position 18…Qc7 [18...Rxd4?? the pawn of course cannot be captured 19.Nb3 Qb4 20.Nxd4+–] 19.Qc3 Qd7 [19...Rd5 20.Nc4µ] 20.Rad1 Na6 Manoeuvre Nb8–a6–c7–d5 21.Nc4 Nc7 22.a4 Ncd5 Black threatens to win material: Nd5xc3. A valuable piece 23.Qf3 Qc7 24.Nd6 The white knight is well posted. 24…Ne8 25.Nge4 Ndf6 26.b4 [26.Nxf6+!? Nxf6 27.Rd3=] 26…Nxe4³ 27.Nxe4 a6 Black’s piece can’t move: e8 28.Rfe1 [28.Rd3 Rd5³] 28…Rd5µ 29.Nc3 Rf5 30.Qh3 Qf4 31.Ne4 Nf6 32.f3 Nxe4 33.fxe4 [33.Rxe4!? Qc7 34.Rb1µ] 33…Rg5 34.Rd3 Qg4 [¹34...Rd8–+ and Black could have gained the advantage] 35.Qxg4³ Rxg4 A double rook endgame occured 36.Kf2 Rd8 37.Kf3 White threatens to win material: Kf3xg4 37…Rh4 38.g4 Rh3+ 39.Ke2 Rxd3 [¹39...Rh2+!? 40.Kf3 Rb2µ] 40.Kxd3= e5 41.d5 cxd5 42.b5 This push gains space 42…dxe4+ White is in double check 43.Kxe4 f6 44.c6 bxc6 45.bxc6?? [¹45.b6³ would save the game] 45…Rd4+–+ 46.Ke3 Rc4 [46...Rc4 47.Rb1 Rxc6 48.Rb8+ Kh7–+] 0–1

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