MESON Chess Problem Database

Problem Display
PID: 257970 (8/8/8/4p1Q1/8/1N2pk2/8/1R2K3 w - - 0 1)

Abdullayev, Elmar

Astafyeva-30 JT (Kudesnik), 2021

8/8/8/4p1Q1/8/1N2pk2/8/1R2K3

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...e2
      • 2.Sd2#
    • 1...e4
      • 2.Sd4#
  • Tries
    • 1.Sc5?
      • 1...e2
        • 2.Rb3#
      • 1...e4!
    • 1.Ra1?
      • 1...e2
        • 2.Sd2#
      • 1...e4
        • 2.Sd4#
      • 1...Ke4!
    • 1.Rc1?
      • 1...e2
        • 2.Sd2#
      • 1...e4
        • 2.Sd4#
      • 1...Ke4!
    • 1.Rb2?
      • 1...e2
        • 2.Sd2#
      • 1...e4
        • 2.Sd4#
      • 1...Ke4!
  • Keys
    • 1.Rd1!
      • 1...Ke4
        • 2.Qg4#
      • 1...e2
        • 2.Sd2#
      • 1...e4
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::S(C)
    • P(c);N_GUARD,SBLOCK::S(C)
  • Tries
    • Try
      • S(C);
      • Vars
        • P(a);OGATEB::R(A)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Vars
        • P(a);N_GUARD::S(C)
        • P(c);N_GUARD,SBLOCK::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • P(a);N_GUARD::S(C)
        • P(c);N_GUARD,SBLOCK::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • P(a);N_GUARD::S(C)
        • P(c);N_GUARD,SBLOCK::S(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(A);
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAR2(D)
      • P(a);N_GUARD::S(C)
      • P(c);N_GUARD,SBLOCK::S(C)
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).