What chess position has the most number of possible moves?

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24th August 2008, 04:41pm
#1
by bowanza
United States
Member Since: Mar 2008
Member Points: 267

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.

24th August 2008, 04:52pm
#2
by sstteevveenn
Wales United Kingdom
Member Since: Dec 2007
Member Points: 1634

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

 

24th August 2008, 04:56pm
#3
by bowanza
United States
Member Since: Mar 2008
Member Points: 267

Good job.

24th August 2008, 05:03pm
#4
by bowanza
United States
Member Since: Mar 2008
Member Points: 267

I just found one with 106!

24th August 2008, 05:05pm
#5
by sstteevveenn
Wales United Kingdom
Member Since: Dec 2007
Member Points: 1634

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

24th August 2008, 05:30pm
#6
by sstteevveenn
Wales United Kingdom
Member Since: Dec 2007
Member Points: 1634

 Pawns coming down the board, 110 Innocent

24th August 2008, 05:43pm
#7
by chaos_
spring falls United States
Member Since: Aug 2008
Member Points: 75

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

24th August 2008, 05:54pm
#8
by bowanza
United States
Member Since: Mar 2008
Member Points: 267

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

24th August 2008, 05:56pm
#9
by bowanza
United States
Member Since: Mar 2008
Member Points: 267

sstteevveenn wrote:

 Pawns coming down the board, 110

 


The position you've shown has 104 moves.

24th August 2008, 06:01pm
#10
by sstteevveenn
Wales United Kingdom
Member Since: Dec 2007
Member Points: 1634

I think you're forgetting underpromotions Cool

24th August 2008, 06:03pm
#11
by Elubas
Buffalo United States
Member Since: Aug 2008
Member Points: 2383

why not just triple the white pawns?

24th August 2008, 06:06pm
#12
by sstteevveenn
Wales United Kingdom
Member Since: Dec 2007
Member Points: 1634

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. 

24th August 2008, 07:14pm
#13
by Nilesh
Philadelphia, PA United States
Member Since: Aug 2007
Member Points: 488

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

24th August 2008, 07:24pm
#14
by Grand_Chill
Galtego Bay Jamaica
Member Since: Nov 2007
Member Points: 248

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.

25th August 2008, 09:48am
#15
by malu
Hannover Germany
Member Since: Aug 2008
Member Points: 40

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. ;)

26th August 2008, 02:23am
#16
by bowanza
United States
Member Since: Mar 2008
Member Points: 267

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:

26th August 2008, 03:21am
#17
by bowanza
United States
Member Since: Mar 2008
Member Points: 267

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

30th September 2008, 07:46pm
#18
by Grand_Chill
Galtego Bay Jamaica
Member Since: Nov 2007
Member Points: 248

Last !!

 

End of Thread

3rd October 2008, 08:49pm
#19
by adrianoz
toronto Canada
Member Since: Jan 2008
Member Points: 1

it doesnt exist its a draw every time.

4th October 2008, 04:50am
#20
by bowanza
United States
Member Since: Mar 2008
Member Points: 267
adrianoz wrote:

it doesnt exist its a draw every time.


What doesn't exist?

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