MESON Chess Problem Database

Problem Display
PID: 51835 (8/2K1pppP/4PkP1/5PR1/8/8/5R2/6Q1 w - - 0 1)

Hadzi-Vaskov, Georgi

The Problemist, 2004

8/2K1pppP/4PkP1/5PR1/8/8/5R2/6Q1

#2

8 + 4

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kd7?
      • 1...fxe6
        • 2.fxe6#
      • 1...fxg6
        • 2.fxg6#
      • 1...Ke5!
    • 1.Re2?
      • 1...fxe6
        • 2.Rxe6#
      • 1...fxg6!
    • 1.Qg3?
      • 1...fxg6
        • 2.Rxg6#
      • 1...fxe6!
    • 1.gxf7?
      • 1...g6
        • 2.h8Q#
        • 2.h8B#
      • 1...Ke5!
  • Keys
    • 1.Qg4!
      • 1...Ke5
        • 2.f6#
      • 1...fxe6
        • 2.fxe6#
      • 1...fxg6
        • 2.fxg6#

This anticipates 178229(2007)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Vars
        • P(c);OGATE,XP(E)::R(B)+P(C),XP(c)
        • P(c);OGATE,XP(F)::R(B)+P(C),XP(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • P(c);OGATE,XP(E)::R1(B),XP(c)
      • Refutation
        • P(c);XP(F)
    • Try
      • Q(A);
      • Vars
        • P(c);OGATE,XP(F)::R1(D),XP(c)
      • Refutation
        • P(c);XP(E)
    • Try
      • P(F);XP(c)
      • Vars
        • P(d);::P=Q
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATE,S_FLIGHT::R(D)+P(C)
      • P(c);OGATE,XP(E)::R(B)+P(C),XP(c)
      • P(c);OGATE,XP(F)::R(B)+P(C),XP(c)
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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).