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Is this position legal?


  • 6 months ago · Quote · #1241

    AceOfGames

    wasted_youth wrote:
     

    we have a genius over here

  • 6 months ago · Quote · #1242

    albatrosinus

    @Remellion : yes... with a promotion

  • 6 months ago · Quote · #1243

    Remellion

    albatrosinus wrote:

    @Remellion : yes... with a promotion

    Try and find a game leading to it where white can still castle. I guarantee it is not as easy as you think, and then some.

  • 6 months ago · Quote · #1244

    albatrosinus

    Wow... it's really annoying... You need to make the king go through the b2 square when there aren't bishop and queen...

  • 6 months ago · Quote · #1245

    BigDoggProblem

    Remellion wrote:
    Related would be a small update of my earlier work (remember this?) to remove extra set pieces; can white castle?

    Yes, white can castle.

  • 6 months ago · Quote · #1246

    shoopi

    (Difficulty: Easy)

    The rook on a8 never moved. How many pawn moves?

     

  • 6 months ago · Quote · #1247

    BigDoggProblem

    shoopi wrote:

    (Difficulty: Easy)

    The rook on a8 never moved. How many pawn moves?

     

    15.

  • 6 months ago · Quote · #1248

    Tharinda97

    wasted_youth, Wow!! It's amazing....

  • 6 months ago · Quote · #1249

    shoopi

    BigDoggProblem wrote:
    shoopi wrote:

    (Difficulty: Easy)

    The rook on a8 never moved. How many pawn moves?

    15.

    That's right. The main trick to notice was that gxf6 could never have been played, since that will require white to play d3 before exf3 is played, which locks the light square bishop inside.

  • 6 months ago · Quote · #1250

    shoopi

    Another variation. How many pawn moves?

     

    1)

    2)

  • 6 months ago · Quote · #1251

    shoopi

    Another one. How many pawn moves?

     

  • 6 months ago · Quote · #1252

    Ghostqiuyu

    1)     6 moves

  • 5 months ago · Quote · #1253

    VishButNotAnand

  • 5 months ago · Quote · #1254

    Remellion

    #1251

    Sorry, I've been a little tired for retros the past week. Now I get to look at this...

    11+14. Poking around the position a while, we find the bottom right cage is really tough to unlock. Various tries fail:

    (try) -1...Nf4 -2. g3? and white is in retropat next.
    (try) -1...Nf4 -2. gx~h3? and black's king can't go home.

    (key) -1...Nf4 -2. fx(B/R)g4! gxNh1=R! -3. Ng3.

    Now here was a little trick. It looks completely illegal thanks to the colour effect (white Bf1 vs c7xd6xe5xf4xg3) until I recalled using the same trick in an elementary composition. The d4-pawn came from c7, and the colour effect is broken and legality becomes obvious.

    One last finesse: the d4-pawn took white's light bishop, since trying to retract a light capture by the g2-pawn locks out either black's R or B that was taken on f3, since white's dark bishop would then have to been captured by the d4-pawn (colour effect!) and white's light B + 2R must return home before uncapping gxf3.

    Therefore 14 pawn moves were made in total.

  • 5 months ago · Quote · #1255

    Chessgrandmaster2001

    *bump*

  • 5 months ago · Quote · #1256

    shoopi

    Good job on the solving Remellion.

    Stating the obvious, I have been inactive in these forums unfortunately as I have began working in a full time job as well as started studying computers. If I have the extra time I might compose some easier yet fun retro puzzles...

  • 4 weeks ago · Quote · #1257

    Guerau

    Hi everyone!

  • 2 weeks ago · Quote · #1258

    matthew_b_rook

    AceOfGames wrote:
    wasted_youth wrote:
     

    we have a genius over here

    what post number?

  • 2 weeks ago · Quote · #1259

    Convolvulus

    Waar's ek nou?!??


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