MESON Chess Problem Database

Problem Display
PID: 244112 (8/8/8/6p1/4R3/6Q1/6nr/K6k w - - 0 1)

Belik, Nikolai Ivanovich

Problemist Pribuzhya, 1990

8/8/8/6p1/4R3/6Q1/6nr/K6k

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg1
      • 2.Re1#
    • 1...Se1
      • 2.Rxe1#
    • 1...Sf4
      • 2.Re1#
    • 1...Sh4
      • 2.Re1#
  • Tries
    • 1.Re2?
      • 1...Kg1
        • 2.Re1#
      • 1...Rh3
        • 2.Qxg2#
      • 1...Rh4
        • 2.Qxg2#
      • 1...Rh5
        • 2.Qxg2#
      • 1...Rh6
        • 2.Qxg2#
      • 1...Rh7
        • 2.Qxg2#
      • 1...Rh8
        • 2.Qxg2#
      • 1...Se1
        • 2.Rxe1#
        • 2.Rxh2#
        • 2.Qxe1#
        • 2.Qxh2#
      • 1...Se3
        • 2.Rxh2#
        • 2.Qxh2#
      • 1...Sf4
        • 2.Re1#
        • 2.Rxh2#
        • 2.Qe1#
        • 2.Qxh2#
      • 1...Sh4
        • 2.Re1#
        • 2.Rxh2#
        • 2.Qe1#
        • 2.Qxh2#
      • 1...g4!
  • Keys
    • 1.Rg4!
      • 1...Kg1
        • 2.Qe1#
      • 1...Rh3
        • 2.Qxg2#
      • 1...Rh4
        • 2.Qxg2#
      • 1...Rh5
        • 2.Qxg2#
      • 1...Rh6
        • 2.Qxg2#
      • 1...Rh7
        • 2.Qxg2#
      • 1...Rh8
        • 2.Qxg2#
      • 1...Se1
        • 2.Qxe1#
        • 2.Qg1#
      • 1...Se3
        • 2.Qg1#
      • 1...Sf4
        • 2.Qe1#
        • 2.Qg1#
      • 1...Sh4
        • 2.Qe1#
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • K(a);P-FLIGHT,P_SPINS(b)::R(C)
    • S(b);N_GUARD::R(C),XS(b)
    • S(b);N_GUARD::R(C)
  • Tries
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINS(b)::R(C)
        • R(c);N_GUARD::QAB1(B),XS(b)
      • Refutation
        • P(d);
  • Actual
    • R(C);
    • Vars
      • K(a);P-FLIGHT,P_SPINS(b)::QAR2(B)
      • R(c);N_GUARD::QAB1(B),XS(b)
      • S(b);OGATE::QAR1(B)
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).