Human beats Computer – Elements, Logic, Strategy – Part 2

Computer Junior – Alterman,B [B51]

Nir Galim blitz, 1995

 1. e4 c5 2.Nf3 Nc6 3.Bb5 d6 4.0–0 Bd7 5.Re1 Nf6 6.h3 a6 7.Bxc6?!  

A typical computer move, as we saw in the previous game. Junior gives up a bishop for a knight.

7…Bxc6 8.Nc3 e5!  Important to fix the center due White’s development advantage .  


  9.Kf1? Many computers still play moves like this, which mean, “I don’t know what my plan is”.

9…g6 10.d3 Bg7 11.Bg5 h6 12.Be3 0–0 13.Qd2 Kh7 After the opening Junior has found himself in a very passive position. Black has a clear plan: to attack on the kingside with f7-f5.

14.a4?  A clear mistake – White himself kills any potential for counter-play with this move. Worthy of attention was 13.a3 and next b4 to open the game on the queenside.                  

14…Ne8 15.a5 f5 16.Qd1 Nc7 17.Bd2 Ne6 18.Nd5 Rf7 19.Nb6 Finishing his plan, the computer has set up what the program might have considered a powerful “dream-knight” on b6, but in reality it looks more like a “paper tiger.” Now Black will start execution on the kingside.19…Rb8 20.h4? This only creates another target for Black’s pieces.

20…fxe4 21.dxe4 Qf6 22.c3 Rbf8 Looks like nothing can help the computer , Black’s attack continues smoothly.



23.Qb3 Nf4 24.Bxf4 Qxf4 25.Nd5 Bxd5 26.Qxd5 g5!

This pawn move decides the game. White has no defensive moves against g4.

27.hxg5 hxg5 28.Re3 g4 29.Kg1 Rf6 30.Rf1 gxf3 31.Rxf3 


31.. Qxf3!!

Easily winning was 31.Qg4, but I was in a human-computer fight and decided to finish the game with the final beautiful combination.

32.gxf3 Rg6+ 33.Kh2 Rf4 34.Kh3

34…Rxf3+ ?!  [Better was 34…Bf6! 35.Qf7+ Kh6–+ And white has no defense.]                      

35.Kh2   Bh6? A pity. After spending so much energy and creativity to reach this position I, under heavy time pressure, missed the simple win. [35…Rf4! 36.Kh3 Bf6 and White may resign.]  

36.Qxb7+ Rg7 37.Qc8! This move was an unpleasant surprise for me. In the tactical game Computer always feels like a fish in a water.


37…Rf6 38.Qh3 Kg8 39.Qc8+ Kh7 

After my mistake position is drawish and  I offered a draw, but to my surprise Computer decided to continue. 

40.Rg1 Bf4+ 41.Rg3 Bxg3+ 42.fxg3 Rf2+ 43.Kg1 Rf3 44.Qh3+ Kg8 45.Kg2?? 


The last mistake. The pawn endgame may be difficult for White or may be losing, but the computer can’t evaluate this, because it sees a pawn advantage on the queenside and prepares to create a passed pawn. But I have a surprise in my pocket!

 45…Rfxg3+ 46.Qxg3 Rxg3+ 47.Kxg3


47..c4!! This is a key move. I fixed the pawns in the queenside and may create a passed pawn in the center. This move Junior totally overlooked. A great mistake would have been [47…Kf7 48.b4! and White is winning.]  



48.Kg4 Kf7 49.Kf3 doesn’t help either 49.Kf5 Ke7 50.Kg5 Ke6 51.Kg4 d5 52.exd5+ Kxd5 53.Kf5 Kd6 54.Kg4 Kc6! and black is winning.


49…Ke6 50.Kg4 Kf6 51.Kg3 Kg5 52.Kf3 Kh4 53.Kf2 Kg4 54.Ke3 Kg3 55.Kd2 Kf3 56.Kc1 0–1


3 Responses

  1. Astounding — not only aren’t there tablebases for moves like 47… c4!!, but Deep Junior didn’t even have a “backward pawn” heuristic for passed pawns?

  2. I guess not anymore !
    Version Junior 10 Has all these rules inside.

  3. stupid game if u want to take cls tk it to me but be sensible idiot moves

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