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Timeline for A Chess Lock Puzzle?

Current License: CC BY-SA 4.0

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Oct 30, 2018 at 23:32 comment added Excited Raichu @supercat remember, my friend set up the position, with no prior moves. I knew someone would try that ;)
Oct 30, 2018 at 23:00 comment added supercat Might Black have moved in the past, even though Black will never move again? If so, depending upon what Black just did, there could be a four-move solution (1. dxe e.p. or 1. fxe e.p., followed by 2. e7 3.e8=R 4. Rxa8)
Oct 30, 2018 at 16:34 answer added Optokopper timeline score: 0
Oct 30, 2018 at 15:26 vote accept Excited Raichu
Oct 30, 2018 at 15:25 answer added gabbo1092 timeline score: 8
Oct 30, 2018 at 15:24 answer added Especially Lime timeline score: 14
Oct 30, 2018 at 15:20 answer added JGibbers timeline score: 3
Oct 30, 2018 at 15:13 comment added Excited Raichu @PiotrWasilewicz yes.
Oct 30, 2018 at 15:11 comment added Piotr Wasilewicz @gabbo1092 I think that black pieces can't do any moves. We only consider white moves. Am I right?
Oct 30, 2018 at 15:11 comment added Excited Raichu @gabbo1092 no, but white is not permitted to capture black pieces that are guarded.
Oct 30, 2018 at 15:10 comment added gabbo1092 Just to clarify, do black's pieces capture whites pieces if they are in a position where they could?
Oct 30, 2018 at 15:08 history edited Excited Raichu CC BY-SA 4.0
deleted 1 character in body
Oct 30, 2018 at 14:30 history asked Excited Raichu CC BY-SA 4.0