MatPlus.Net

 Website founded by
Milan Velimirović
in 2006

7:59 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-Apr-2021

B P C F





 
 
MatPlus.Net Forum General Abdurahmanovic 2 theme
 
You can only view this page!
(1) Posted by Viktoras Paliulionis [Wednesday, Feb 24, 2021 17:43]

Abdurahmanovic 2 theme


The Encyclopedia of Chess Problems gives the following definition of the Abdurahmanovic 2 theme:

In the initial position white piece A pins black piece X. In the solution A pins another black piece Y after the king moves, thus changing the pin-line. The unpinned black piece X plays in next move.

Example:
ABDURAHMANOVIC,Fadil
1st pr. The Problemist 1990
(= 5+9 )

h#2 2 sol.
8/2n5/p3kp2/1B1bn3/3b3r/8/Q1KB3r/4R3

1.Kf5 Qa5 2.Sg4 Bd3#
1.Kd6 Rd1 2.Bg2 Bb4#

In the first solution, if A is WQ, X is Bd5, then WQ should pin another black piece, and Bd5 should play, but it is not.
In the second solution, if A is WR, X is Se5, WR pins another black piece (Bd4), but X (Se5) should play, not Bd5.

Is this theme definition correct? Or maybe the example is wrong? Are there more examples on this theme?
 
(Read Only)pid=20715
(2) Posted by Vilimantas Satkus [Thursday, Feb 25, 2021 12:35]

Pažiūrėk 446190 Yacpdb
 
 
(Read Only)pid=20716
(3) Posted by Viktoras Paliulionis [Thursday, Feb 25, 2021 13:48]

https://www.yacpdb.org/#446190 also does not meet the definition.

Parrinello, Mario
Gaudium 2018
(= 7+10 )

h#2 b) Move b4 d6
1B3nQ1/5r1b/1p3RP1/5rbp/RK6/P4k1q/6p1/8

a) 1.Kg4 g×h7 2.Rb5+ K×b5#
b) 1.Kg3 g×f7 2.Rd5+ K×d5#

In the solution wRf6 (piece A) should pin another black piece, but it is not.
 
 
(Read Only)pid=20717

No more posts


MatPlus.Net Forum General Abdurahmanovic 2 theme