1. Joined
    11 Jun '06
    Moves
    3516
    22 Jun '06 16:241 edit
    white to play and win

  2. Indiana
    Joined
    29 May '06
    Moves
    1694
    22 Jun '06 16:52
    Originally posted by aginis
    white to play and win

    [fen]8/p7/P4p2/3K1P2/5k2/8/8/8[/fen]
    Correct me if I'm wrong but I think this one is simple.

    1. Kc6 Kf5
    2. Kb7 Ke5
    3. Ka7 f5
    4. Kb7 f4
    5. a7 f3
    6. a8=Q f2
    then it is just K Q vs. K p, easy checkmate
  3. Standard memberBigDogg
    Secret RHP coder
    on the payroll
    Joined
    26 Nov '04
    Moves
    155080
    22 Jun '06 16:52
    Originally posted by aginis
    white to play and win
    Hmm. I don't see why White can't just promote the a-pawn and win. Black can only get his f-pawn to f3, which doesn't seem far enough to draw. White can often force a position such as the following:



    ...where Black can make no progress. ...Kg2 or f2 prevents the pawn from advancing; ...f2 allows Qh1-f1, blockading the pawn and winning.
  4. Joined
    11 Jun '06
    Moves
    3516
    22 Jun '06 16:57
    Originally posted by hypothetical
    Correct me if I'm wrong but I think this one is simple.

    1. Kc6 Kf5
    2. Kb7 Ke5
    3. Ka7 f5
    4. Kb7 f4
    5. a7 f3
    6. a8=Q f2
    then it is just K Q vs. K p, easy checkmate
    well black being an intelligent fellow sees what you see and doesn't chomp the pawn.

    1.Kc6 Ke5!
  5. Indiana
    Joined
    29 May '06
    Moves
    1694
    22 Jun '06 17:12
    Originally posted by aginis
    well black being an intelligent fellow sees what you see and doesn't chomp the pawn.

    1.Kc6 Ke5!
    ok then how about this?

    1. Kc6 Ke5
    2. Kb7 Kd6
    3. Kb8 Kc6
    4. Kc8 Kb6
    5. Kd8 Kc6
    6. Ke7 Kd5
    7. Kf6 Kd6
    8. Kg6 Ke7
    9. f6+ Ke6
    10. f7 Ke7
    11. Kg7 Kd8
    12. f8=Q+
    then it is K Q p vs. K p, easy checkmate. Am I right this time?
  6. Joined
    11 Jun '06
    Moves
    3516
    22 Jun '06 17:301 edit
    Originally posted by hypothetical
    ok then how about this?

    1. Kc6 Ke5
    2. Kb7 Kd6
    3. Kb8 Kc6
    4. Kc8 Kb6
    5. Kd8 Kc6
    6. Ke7 Kd5
    7. Kf6 Kd6
    8. Kg6 Ke7
    9. f6+ Ke6
    10. f7 Ke7
    11. Kg7 Kd8
    12. f8=Q+
    then it is K Q p vs. K p, easy checkmate. Am I right this time?
    5...Kc6? is wishful thinking

    5...Kxa6
    6.Ke7 Kb5
    7.Kxf6 a5
    8.Ke5 a4
    9.Kd4 (9.f6 a3 f7 a2 f8=Q a1=Q draw)
    9...a3! (Kb4?? f6 a3 f7 a2 f8=Q+!! Kb3 Qb8+ Kc2 Qc7+ Kb1 Kd3! a1=q Qc2++)
    10.Kc3 a2
    11.Kb2 a1=q+
    12.Kxa1 Kc5 =

  7. Joined
    12 Mar '03
    Moves
    44411
    22 Jun '06 17:361 edit
    1.Kc6 Ke5!
    2.Kc7! and now

    2. ... Kd5
    3.Kd7 Ke5 (Kc5? 4.Ke6 wins with the f-pawn)
    4.Kc6! and now black cannot reach c7 when the white king grabs the a-pawn

    2. ... Kxf5
    3.Kb8 (or Kb7) and wins with the a-pawn
  8. Joined
    11 Jun '06
    Moves
    3516
    22 Jun '06 17:56
    have you seen this puzzle previously?
  9. Joined
    12 Mar '03
    Moves
    44411
    22 Jun '06 18:04
    Not that I recall. But the black king maneuvre is well known. Once white is aware of the threat (Kxa7? Kc7!) then its only a matter of counting and using the white f-pawn to prevent black from maintaining opposition.
  10. Joined
    11 Jun '06
    Moves
    3516
    22 Jun '06 19:161 edit
    ok heres another



    also white to play and win
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