What chess position has the most number of possible moves?

bowanza

A few weeks back there was a thread about how many possible positions there were in chess.  It made me wonder what position had the most number of moves for the side to move.  To simplify it a little, if White has the move and there are no promoted men, what position has the most number of possible moves?

I set out to figure that out and could not find anything on the internet about it.  I found lots of stuff, but nothing about that.  So I started doing my own research.

 

Here is a position with 102 moves for white.  I challenge anyone to find one with the same or more.  In this position the black king can be placed several different squares.  These variations would not be considered unique.

sstteevveenn

here's one I found.  It has 103 moves for white! 

 

bowanza

Good job.

bowanza

I just found one with 106!

sstteevveenn

haha imagine how many you could get if you used both rooks Wink

sstteevveenn

 Pawns coming down the board, 110 Innocent

chaos_

queen in center could be more moves like 30 somthing horses are 16 king is 8 rooks  15 each  bishop 14 so about 114 w/o pawns

bowanza

Oops, I forgot to put on the rook.  How's this:  EDIT:  oops, this position has 104 moves, not 106.

bowanza

sstteevveenn wrote:

 Pawns coming down the board, 110

 


The position you've shown has 104 moves.

sstteevveenn

I think you're forgetting underpromotions Cool

Elubas

why not just triple the white pawns?

sstteevveenn

I dont think you can get any more moves out of it by tripling the pawns.  You lose a move if you try it on the side with the kings. 

honorius

Diagram shows legal position with promoted pieces with maximum white moves.

 

http://en.wikipedia.org/wiki/Tasks_and_records_in_chess_problems

Nilesh021

honorius wrote:

 

Diagram shows legal position with promoted pieces with maximum white moves.

 

http://en.wikipedia.org/wiki/Tasks_and_records_in_chess_problems


LOL

Chillapov

honorius wrote:

 

Diagram shows legal position with promoted pieces with maximum white moves.

 

http://en.wikipedia.org/wiki/Tasks_and_records_in_chess_problems


LOL. The Black King must be pissing his pants right now.

malu

Grand_Chill wrote:

honorius wrote:

 

Diagram shows legal position with promoted pieces with maximum white moves.

 

http://en.wikipedia.org/wiki/Tasks_and_records_in_chess_problems


LOL. The Black King must be pissing his pants right now.


Only if it's White's move.^^ If it's Black's move it's a stalemate and I would celebrate a stalemate in this position if i was Black. ;)

bowanza

I found a position with 109 moves for White except it was impossible for Black's king not to be in check (which would have meant it had to be black's move, but it's white's!) or not to take away a move.  But taking out either of the advanced pawns and putting in the Black king yeilds a position with 108 moves:

bowanza

I just outdid even myself.  I think this position has the most number of possible moves with no promoted men.

Chillapov

Last !!

 

End of Thread

adrianoz

it doesnt exist its a draw every time.