MESON Chess Problem Database

Problem Display
PID: 172437 (8/8/8/8/6K1/1Q3N2/6k1/4n1rR w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/8/8/8/6K1/1Q3N2/6k1/4n1rR

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Rh2#
    • 1...Sxf3
      • 2.Qxf3#
  • Keys
    • 1.Qe3!
      • threat
        • 2.Rxg1#
        • 2.Qxg1#
      • 1...Kf1+
        • 2.Rxg1#
      • 1...Kxh1+
        • 2.Qxg1#
      • 1...Rxh1
        • 2.Qe2#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Rf1
        • 2.Rh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK::R1(A)
    • S(a);OGATE,XS(C)::QAB1(B),XS(a)
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);CHECK,P_SPINR(b),S_FLIGHT::R1(A),XR(b)
      • K(c);CHECK,S_FLIGHT,XR(A)::QAR1(B),XR(b)
      • R(b);SBLOCK,XR(A)::QAR2(B)
      • S(a);OGATE,XS(C)::QAB1(B),XS(a)
      • R(b);SBLOCK::R1(A)
HTML5 logo

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).