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we have a genius over here
@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.
Wow... it's really annoying... You need to make the king go through the b2 square when there aren't bishop and queen...
Yes, white can castle.
The rook on a8 never moved. How many pawn moves?
wasted_youth, Wow!! It's amazing....
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.
Another variation. How many pawn moves?
Another one. How many pawn moves?
1) 6 moves
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.
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...
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