Illegal Position Contest!

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Avatar of n9531l1
KieferSmith wrote:

not sure about this one (#8955)

Easily legal.
 
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If KieferSmith's position at #8955 is reached legally, it will be Black's turn to move. After any move by Black, White can mate in 1. Or the game could end in stalemate after White's 5th move. Or Black could mate in 5 moves.

Can you find a quicker stalemate or a quicker mate by Black?

Avatar of evdovkas
Avatar of evdovkas

this is more illegal

Avatar of KieferSmith
Avatar of n9531l1
KieferSmith wrote:
#8964

This one is clearly illegal, since the white h-pawn can't promote to a light-squared bishop without making a capture, but all Black's units are still on the board.

If the black pawn at g7 is removed, would the position be legal?

Avatar of e7rook
Avatar of n9531l1
e7rook wrote:
#8965

Both positions are clearly illegal (a little too obvious).

In the second position, if the black rook at e8 is removed from the board, would the position be legal?

Avatar of e7rook

forgot to remove the bishop on c8 for the second one probably

Avatar of e7rook

I see why they're illegal now. Hidden in plain sight

Avatar of AdvikTripathy2309
Avatar of IRL_Pwned
Black to play and be gay
Avatar of GavinSuckAtChess
Avatar of undertalesansthebest

alright, im a fan of onepiece,(A huge fan of it)! But i also like pokemon, just don't know, which pokemon to watch in order!?

Avatar of Romans_5_3-5

this is super ilegal just try getting it

Avatar of BE_Inc
kiss
Avatar of prawnlevelplayer
Technically legal, but unreachable.
I bet this would make an interesting game of chess 
Avatar of Little_Skib
Avatar of Little_Skib

Not sure why it posted my position twice but here’s one that’s not too hard but requires some analysis to prove illegal.

Avatar of n9531l1
Little_Skib wrote:

Not sure why it posted my position twice but here’s one that’s not too hard but requires some analysis to prove illegal.

White needs five captures to promote the f and h pawns to the two promoted white bishops, and a sixth capture to remove the black bishop at c8. But Black is only missing five units.