Pretty sure there's no previous White move possible.
Illegal Position Contest!
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buzz960 wrote:
There is no possible previous White move.
Current FEN [subject to edit]: 7r/8/8/8/6n1/8/5k1b/7K b - - 0 1
Last move could be 0...BxRh2 preceded by any wR move along the h-file.
BigDoggProblem wrote:
buzz960 wrote:
There is no possible previous White move.
Sure there is. -1.Kf1 or -1.Kh1, then retract the check by bQ.
I only saw that after I posted it, whoops!
Changed the position.
Ok, I went through analysis, and I am 80% sure that this is illegal due to impossible promotion.
4Q3/1Q5Q/2P5/1P1PKPP1/Pk6/6NP/3N4/8 w - - 0 1
(White has 3 queens and 7 pawns, and White could only have one more queen than he has pawns promoted- he has two extra queens.)
Feb 26, 2025
0
#8886
Those aren’t knights…
White king on e4, black queens on g3, g5, d6, f6, c3, c6, d2, f2, black king on h8!
White king on e4, black queens on g3, g5, d6, f6, c3, c6, d2, f2, black king on h8!
SacrifycedStoat wrote:
Those aren’t knights…
White king on e4, black queens on g3, g5, d6, f6, c3, c6, d2, f2, black king on h8!
White king on e4, black queens on g3, g5, d6, f6, c3, c6, d2, f2, black king on h8!
Legal. bQc6 just captured something.
animalsnackmind wrote:
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Nearly illegal! Well done! But there is one way out for this due to the proximity of the White king with the bishop.
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eric0022 wrote:
animalsnackmind wrote:
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Nearly illegal! Well done! But there is one way out for this due to the proximity of the White king with the bishop.
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I pointed this out 6 days ago. Welcome to the thread.
White to move.
Starlink to move
ignore the color palette guys i made this in keynote
MrMarshMan wrote:
White to move.
black's in check while it's white's turn
not an interesting position
TenGolf-Scientistical wrote:
ignore the color palette guys i made this in keynote
It was easier to ignore the whole post.
daStrwbrry wrote:
#8906 is legal.
BigDoggProblem wrote:
daStrwbrry wrote:
#8906 is legal.
Oh dear, didn't realise that cook existed. I thought I could be adventurous with the c-pawn but it backfired.
Try this instead:
daStrwbrry wrote:
BigDoggProblem wrote:
daStrwbrry wrote:
#8906 is legal.
Oh dear, didn't realise that cook existed. I thought I could be adventurous with the c-pawn but it backfired.
Try this instead:
With wRb1 on a1, this would be legal. Retract the following moves:
However, with wR on b1, we have to retract a black pawn to g6, and the uncaptured bRg7 cannot get to a1 to unpromote.
A black Rook is the only candidate to unpromote on a1. A black Q cannot get there without disturbing the white K. N and B are locked out by the pawn structure.
How?
[Hint: Remember En Passant ]
It's a little trickier with BigDoggProblem's correction.