# spiders

Mephisto2
Posers and Puzzles 26 May '05 08:00
1. 26 May '05 08:00
Cusriosum: a legal position with 105 different mate in 1 moves:

2. 26 May '05 11:465 edits
Legal? Hmm...what was White's last move before Black played a6?

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Curiouser: In the diagram below White has 144 possible moves.

3. 26 May '05 12:072 edits
Originally posted by THUDandBLUNDER
Legal? Hmm...what was White's last move before Black played a6?

Yeah, maybe it is legal.
What can we say about Black's last move before a6?
4. 26 May '05 13:202 edits
Originally posted by THUDandBLUNDER
Legal? Hmm...what was White's last move before Black played a6?

Black's last move may have been something different than a6. for instance, a piece move that allowed white to promote his last pawn to queen on d8 or f8 ....
5. BigDoggProblem
26 May '05 13:56
Originally posted by Mephisto2
Black's last move may have been something different than a6. for instance, a piece move that allowed white to promote his last pawn to queen on d8 or f8 ....
Not so. Black's last move must be -1...a7-a6. I do not know where you're getting this other piece that moves. Black has to wait for White to uncapture a piece before he can retract a move with it.

So -1...a7-a6 followed by almost any uncapture by White shows the position is legal.
6. 26 May '05 14:06
Originally posted by BigDoggProblem
Not so. Black's last move [b]must be -1...a7-a6. I do not know where you're getting this other piece that moves. Black has to wait for White to uncapture a piece before he can retract a move with it.

So -1...a7-a6 followed by almost any uncapture by White shows the position is legal.[/b]
correct. This is not the first stupid thing I wrote/did today.
7. PBE6
Bananarama
26 May '05 15:06
Originally posted by Mephisto2
correct. This is not the first stupid thing I wrote/did today.
I hate spiders.
8. 26 May '05 18:16
Originally posted by PBE6
I hate spiders.
I bet it's a mutual thing
9. PBE6
Bananarama
26 May '05 18:33
Originally posted by Mephisto2
I bet it's a mutual thing
Continuing the chain, I see. ðŸ˜›
10. 29 May '05 04:182 edits
In the position below White has 218 possible moves.

Petrovic, 1964