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Le Quang Liem vs Eric Hansen
Pro Chess League (2018) (rapid), chess.com INT, rd 9, Mar-07
Indian Game: General (A45)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
May-31-21  Walter Glattke: 48.-Ne2+
49.Kh1 Ng3+ 50.Kg2 Nxf1
49.Kg2 Qg3+ 50.Kg1 Nf2+ 51.Qxf2 Qxf2 52.N4f3 Ng3# 49.Kxh3 Qg3#
May-31-21
Premium Chessgames Member
  FSR: 48...Ne2+ 49.Kg2 (49.Kxh3 Qg3#; 49.Kh1 Ng3+ wins the queen) Qg3+ 50.Kh1 Nf2+ 51.Qxf2 Qxf2 and wins.
May-31-21  saturn2: Black wins 48...Ne2+ 

49. Kxh3 Qg3 mate
49. Kg2 Qg3+ 50. Kh1 Nf2+ 51. Qxf2 Qxf2 queen
49. Kh1 Ng3 quuen fork

May-31-21  Brenin: A second POTD! And almost as easy as the first one. It's a pity that after 48 ... Ne2+ 49 Kg2 or Kh1, Black needs to win the Q first before delivering mate: one feels that the usually powerful Q+N combination, augmented by another N, ought to be enough without having to eliminate the main defender.
May-31-21
Premium Chessgames Member
  chrisowen: Later revile Ne2+ goofball affords jaffa it a hod room guv later revile jack er ms quibble vociferous revile define eg wu chugger why hop puzzler it task rook v head dj u i vet oman blitz coy on whip visage totadd again q focal it cinch visage face its meticulous volume revile chime its whippy Ne2+ clung on x:
May-31-21  RandomVisitor: Earlier black had 38...Nxf2, where Kxf2 fails to Nd3+ and Rxe1:


click for larger view

Stockfish_21052820_x64_modern:

37/59 26:18 -10.23 39.Qb1 Nxh3+ 40.Kh2 Nf2 41.Rxe8 Qxe8 42.Qg1 Qe5+ 43.Kg2 Ncd3 44.N2f3 Qe4 45.Kf1 Nxg4 46.Qg3 h5 47.Kg1 Qe3+ 48.Kg2 Nf4+ 49.Kh1 Qc1+

37/54 26:18 -10.53 39.Qa1 Ncd3 40.Rxe8 Qxe8 41.Qf1 Qe3 42.N2f3 Nxh3+ 43.Kh2 Nhf2 44.Qg2 Qe4 45.Kg1 Nxg4 46.Qg3 Qe3+ 47.Kg2 h5 48.Qh4 Nf4+ 49.Kh1 Qc1+

36/49 26:18 -10.76 39.Qf3 Rxe1+ 40.Kxf2 Rc1 41.Qe3 Nd3+ 42.Kg2 Re1 43.Qf3 Qe7 44.Nf1 Qg5 45.h4 Qxh4 46.Qg3 Qg5 47.Nf3 Qd5 48.Kg1 Qc5+ 49.Nd4 Qg5

May-31-21  mel gibson: So now we have a 2nd Monday puzzle
that is original - good.

I saw the first ply straight away but lost track after that.

Stockfish 13 says mate in 14.

48... Ne2+

(48. .. Ne2+
(♘f4-e2+ ♔h2-h1 ♘e2-g3+ ♔h1-g2 ♘g3xf1 ♔g2xf1 ♕b8-e5 g4xh5 ♕e5-e3 ♘d2-e4 ♕e3xe4 h5xg6 ♔g7xg6 c4xb5 ♕e4-e3 ♔f1-g2 ♘h3-f4+ ♔g2-f1 ♘f4-d3 ♔f1-g2 ♕e3-f2+ ♔g2-h3 ♘d3-f4+ ♔h3-g4 ♘f4-h5 b5-b6 ♕f2-g3+) +M14/81 254)

May-31-21  Damenlaeuferbauer: After long thinking, the strong Canadian GM Eric Hansen finally found the nice knight sacrifice 48.-,Ne2+! (49.Kxh3,Qg3#; 49.Kh1,Ng3+ 50.Kg2/Kh2,Nxf1+(+) -+) 49.Kg2,Qg3+ 50.Kh1,Nf2+ 51.Qxf2,Qxf2 -+. This game shows, that the King's Indian with the double fianchetto is a good approach against the London system.
May-31-21  johnnydeep: A worthy Monday puzzle. A slightly tricky mate in 2.
May-31-21  Skewbrow: 48..Ne2+ is the obvious start. The knight at h3 is safe for 49. Kxh3 is followed by 49...Qg3x, so white had better try something else. 49. Kg2 also succumbs to 49.. Qg3+ 50. Kh1 Nf2+. But it took me embarrassingly long to spot that 49. Kh1 should be met with the family fork Ng3+. I guess the problem was that I was still trying to find a quick mate even though there isn't one.
May-31-21  DrGridlock: Not really a "mate in 2"

As < saturn2 > points out:

Black wins 48...Ne2+
49. Kxh3 Qg3 mate
49. Kg2 Qg3+ 50. Kh1 Nf2+ 51. Qxf2 Qxf2 queen
49. Kh1 Ng3 quuen fork

It's the lines where black does not take on h3 that get "tricky" to verify. Black wins massive material, but no immediate mate.

May-31-21  Hercdon: Although White’s game was lost by move 45 it’s curious they thought Black would not make the same strike at move 48 as at move 46.

I must also admit that I replayed the previous three moves before trying to solve this puzzle. That made this puzzle so much easier to solve. Is that a form of cheating? What do you think?

May-31-21
Premium Chessgames Member
  Willber G: <I must also admit that I replayed the previous three moves before trying to solve this puzzle. That made this puzzle so much easier to solve. Is that a form of cheating? What do you think?>

I do that for the more difficult puzzles. It gives me a feel for the player's strategy.

May-31-21
Premium Chessgames Member
  Willber G: It doesn't always work!
May-31-21
Premium Chessgames Member
  agb2002: Black can attack the white king with all three pieces starting with 48... Nf2+:

A) 49.Kxh3 Qg3#.

B) 49.Kg2 Qg3+ 50.Kh1 Nf2+ wins.

C) 49.Kh1 Ng3+ wins.

May-31-21
Premium Chessgames Member
  drollere: 48. .. Ne2+ and white can either get mated on h3 or lose the Q from the other two flight squares g2 and h1.
May-31-21
Premium Chessgames Member
  drollere: <Is that a form of cheating? What do you think?>

cheating isn't the point, because you're not in competition with anyone and no prizes are being awarded.

the puzzles (and certain kibitzes) can help you learn to be a better player. that's the point.

May-31-21
Premium Chessgames Member
  Diademas: What? No prizes?
I'm out of here!
May-31-21  zb2cr: More interesting that the given game line is the line <agb2002> gives as (B) and <DrGridlock> specifies second:

48. ... Ne2+; 49. Kg2, Qg3+; 50. Kh1, Nf2+; 51. Qxf2, Qxf2. Both of these players are so strong they believed the next moves would be obvious. For the novices, Black has a threat of ... Qg1#, and a threat of ... Ng3#. White can meet either of these threats, e.g. with 52. Nf1 or 52. Ndf3, but not both.

Jun-01-21
Premium Chessgames Member
  gawain: This was very pretty. An unusual array of forces, Q and two N for each player. But White's pieces are astonishingly helpless.
Jun-07-21
Premium Chessgames Member
  Dionysius1: <Hercdon:...I must also admit that I replayed the previous three moves before trying to solve this puzzle. That made this puzzle so much easier to solve. Is that a form of cheating? What do you think?>. I think you're safe - somewhere chessgames.com makes it clear that these are positions of the day, not puzzles. I like that they do - gives us all kinds of permission :-)

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