MatPlus.Net

 Website founded by
Milan Velimirović
in 2006

11:44 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 Twomovers The lightest Staugaard Castling #2
 
You can only view this page!
(1) Posted by James Malcom [Monday, Nov 1, 2021 05:53]

The lightest Staugaard Castling #2


I find it neat that somehow no one else has found it yet.

#2
(= 4+1 )


For two solutions, shift both rooks to the a-file.
 
(Read Only)pid=21724
(2) Posted by Andrew Buchanan [Monday, Nov 1, 2021 12:43]

Alas, I don't think that the base post gives a mate. wKe3 blocks wRb3. Shifting wRb3 to f3 gives cooks 1.Rb2! & 1.Rf2! Shifting wRb3 to g3 means there is no solution at all. So I think James' excellent contest is still open, and I offer the following:

(= 4+2 )
#2
I think bKg1 works also
 
 
(Read Only)pid=21725
(3) Posted by James Malcom [Monday, Nov 1, 2021 13:50]

Alas, make sure you have sleep before ever posting. Beasley anticipates you: https://pdb.dieschwalbe/P1368088

Similarly, however, the lightest #3 can be done.

(= 5+3 )

 
   
(Read Only)pid=21726
(4) Posted by Andrew Buchanan [Monday, Nov 1, 2021 14:33]

(= 5+1 )
#3

(= 5+3 )
#4 (version of James Malcom)

(= 8+1 )
#5
 
   
(Read Only)pid=21727
(5) Posted by James Malcom [Monday, Nov 1, 2021 22:25]

Nice work; it is now time for an excelsior!

#6 After Andrew
(= 8+4 )

 
   
(Read Only)pid=21729
(6) Posted by Andrew Buchanan [Tuesday, Nov 2, 2021 16:32]

An inspiring #6 by James. Here are my economy improvements in #4, #5 & #6:

(= 6+1 )
#4 7 units

(= 7+1 )
#5 8 units

(= 6+4 )
#6 10 units

The queenside stand-off seems balanced. The challenge then is to hobble wR (whose presence is necessary to avoid the cook Qe8-e2#). Black needs a spare tempo in the #6 to avoid being pushed off c2. All are C+ by WinChloe Rokagogo, which I think is sufficient.
 
   
(Read Only)pid=21733
(7) Posted by Hauke Reddmann [Tuesday, Nov 2, 2021 19:03]

For the #6, I prefer James' setting, as White
can actually castle.
 
   
(Read Only)pid=21738
(8) Posted by Andrew Buchanan [Tuesday, Nov 2, 2021 19:24]

(= 8+3 )
#6
I did this one too, Hauke. White can castle with only 11 units. The tempo concerns are quite nice here: see why can't have sBh6 instead of h7? However James' declared objective for this thread is *lightest*. Do follow the plot :-)
 
 
(Read Only)pid=21739

No more posts


MatPlus.Net Forum Twomovers The lightest Staugaard Castling #2