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Subject: Re: A simple (?) endgame with only 6 pieces

Author: Jorge Pichard

Date: 11:56:29 06/15/03

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On June 15, 2003 at 13:00:40, Harald Faber wrote:

>[D]8/8/8/5k2/1pK4P/6P1/8/4b3 b - - 0 1
>
>Only 6 pieces and not far from the tablebases. But which programs find the
>winning idea? You see it when playing through because 1.Kg4 is found by
>programs. But which play the king manoeuvre and don't play stupid bishop moves?
>
>1... Kg4 2. Kb3 Bd2 3. Kc4 Bc3 4. Kb3 Kf3 5. Kc4 (5. h5 Ke3 6. h6 Kd4 7. g4 (7.
>h7 Kc5) 7... Kc5 8. g5 Bd2) 5... Ke3 6. h5 Kd2 7. Kb3 Kd3 8. h6 (8. g4 Kd4 9.
>g5 Kc5 10. g6 (10. h6 Bd2) 10... Bg7) 8... Kd4 9. g4 Kc5 10. g5 Bd2 11. h7 Bc3
>
>Only 6 pieces, but unsolvable for top programs?


New game
8/8/8/5k2/1pK4P/6P1/8/4b3 b - - 0 1

Analysis by smarthink:

1...Kg4 2.Kb3
  -+  (-3.45)   Depth: 2   00:00:00
1...Kg4 2.Kb3
  -+  (-3.45)   Depth: 17   00:00:00  139kN
1...Kg4 2.Kb3
1...Kg4 2.Kb3 Bc3 3.Kc4 Kh5 4.Kb3 Bd2 5.Kc4 Kg4 6.Kb3 Be1 7.Kc4 Bd2 8.Kb3 Be1
9.Kc4 Bd2 10.Kb3 Be1 11.Kc4
  -+  (-3.46)   Depth: 20   00:00:39  18935kN

(Pichard, Jorge's Home 15.06.2003)



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