P-123A

  If the black king is active and has reached at least the fifth rank, the position is drawn whoever has the move. This was demonstrated by G. Lolli as far back as 1763. Black to move draws very easily by not allowing the white king to penetrate to the front of its pawns.

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P-109

  White also wins in an analogous position ( I. Berger’s study, 1890 ) with White’s pawn at g2. The win is relatively simple. In this position White wins whoever has the move! If it is Black’s turn, 1…f5+ 2.Kd4 Kd6 does not work due to the reserve tempo 3.g3, while all other attempts are […]

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P-108

  The position is won if the white potential passed pawn has not yet reached the fourth rank. In a study by I. Berger (1890), Black to move draws outright with 1..f5+ 2.Kd4 Kd6 since White lacks a reserve pawn move to regain the opposition and occupy the fifth rank. White to move wins due […]

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