MatPlus.Net

 Website founded by
Milan Velimirović
in 2006

12:15 UTC
ISC 2021
 
  Forum*
 
 
 

Username:

Password:

Remember me

 
Forgot your
password?
Click here!
SIGN IN
to create your account if you don't already have one.
CHESS
SOLVING

Tournaments
Rating lists
1-Oct-2021

B P C F





 
 
MatPlus.Net Forum General Same-side added moves from almost stalemate
 
You can only view this page!
(1) Posted by Hauke Reddmann [Monday, Nov 8, 2021 10:16]

Same-side added moves from almost stalemate


So to say the "inverse" of the epic thread :-)

(= 4+15 )


Black of course can't be stalemated here :-),
so assume he has exactly one move. If he may
play again, 37. (w/o promo I get 34.)

Improve (also by replacing "1 move" with "any").
 
(Read Only)pid=21778
(2) Posted by Jacques Rotenberg [Monday, Nov 8, 2021 14:15]

it seems you missed 38 with your idea :
(= 4+13 )

 
 
(Read Only)pid=21782
(3) Posted by Jacques Rotenberg [Monday, Nov 8, 2021 16:41]

Here is 45 without promotees
(= 8+5 )

 
   
(Read Only)pid=21783
(4) Posted by Frank Richter [Monday, Nov 8, 2021 17:04]

You may rotate position and add two pawn moves, or am I wrong?
(= 7+6 )

 
   
(Read Only)pid=21784
(5) Posted by Hauke Reddmann [Monday, Nov 8, 2021 17:30]

Direct unpin. Clever. I knew I wasn't at the maximum by far.

So my try, 53 moves:

(= 9+5 )


EDIT: 56

(= 9+6 )


What do additional "promo" pins yield? With pretty near-lying
choices I get 66 moves.
 
   
(Read Only)pid=21785
(6) Posted by James Malcom [Monday, Nov 8, 2021 18:46]

Hauke, I overbid you, regarding promoted pieces, with 70 (84-14).

(= 9+6 )

 
   
(Read Only)pid=21787
(7) Posted by Hauke Reddmann [Monday, Nov 8, 2021 21:23]

Humbly accepted, although this falls under the x-y
and not the x-1 record. I fix that :-)

(= 9+7 )


71-1.

This setup can also be used for x-y, please optimize:

(= 10+7 )


120-15

EDIT: The other direction gives a few moves more (124-15):

(= 11+7 )

 
 
(Read Only)pid=21788

No more posts


MatPlus.Net Forum General Same-side added moves from almost stalemate