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Problem Display

PID: 235052 (R1R5/3p1q2/4pp2/1KN4r/8/1p6/ppkp1N2/1bbr4 w - - 0 1)

Shanshin, Valery Yurevich

Revista Romana de Sah, 1980

R1R5/3p1q2/4pp2/1KN4r/8/1p6/ppkp1N2/1bbr4

#2

5 + 13

5454	Near Snap	2021
15148	Sadier Collection	2021

SOLUTION

SOUND
Sets
- 1...Rh1
  - 2.Scd3#
  - 2.Sa4#
  - 2.Sce4#
  - 2.Sa6#
  - 2.Sxe6#
  - 2.Sb7#
  - 2.Sxd7#
- 1...Rh2
  - 2.Scd3#
  - 2.Sa4#
  - 2.Sce4#
  - 2.Sa6#
  - 2.Sxe6#
  - 2.Sb7#
  - 2.Sxd7#
- 1...Rh3
  - 2.Scd3#
- 1...Rh4
  - 2.Sce4#
- 1...Rxc5+
  - 2.Rxc5#
- 1...Rh6
  - 2.Scd3#
  - 2.Sa4#
  - 2.Sce4#
  - 2.Sa6#
  - 2.Sxe6#
  - 2.Sb7#
  - 2.Sxd7#
- 1...Rh7
  - 2.Scd3#
  - 2.Sa4#
  - 2.Sce4#
  - 2.Sa6#
  - 2.Sxe6#
  - 2.Sb7#
  - 2.Sxd7#
- 1...e5
  - 2.Se6#
- 1...f5
  - 2.Scd3#
  - 2.Sa4#
  - 2.Sce4#
  - 2.Sa6#
  - 2.Sxe6#
  - 2.Sb7#
  - 2.Sxd7#
- 1...d5
  - 2.Sd7#
Keys
- 1.Ra4!
  - threat
    - 2.Rc4#
  - 1...Rxc5+
    - 2.Rxc5#
  - 1...Kc3
    - 2.Rc4#
  - 1...Rh3
    - 2.Scd3#
  - 1...Rh4
    - 2.Sce4#
  - 1...e5
    - 2.Se6#
  - 1...d5
    - 2.Sd7#

This anticipates 98219(1990)

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- R(i);N_PINS(C)::R(E)+S(C)
- R(i);CHECK,OGATE,P_SPINR(i),XS(C)::R(E),XR(i)
- P(j);N_PINS(C)::R(E)+S(C)
- P(l);N_PINS(C)::R(E)+S(C)
Actual
- R(D);
- Threat
  - R(D)
- Vars
  - R(i);CHECK,OGATE,P_SPINR(i),XS(C)::R(E),XR(i)
  - K(f);P-FLIGHT::R1(D)
  - R(i);N_PINS(C)::R(E)+S(C)
  - P(j);N_PINS(C)::R(E)+S(C)
  - P(l);N_PINS(C)::R(E)+S(C)

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).