MESON Chess Problem Database

Problem Display
PID: 46971 (4K3/8/8/2Bk4/3P4/8/6P1/1R2Q3 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Problemas, 1989

4K3/8/8/2Bk4/3P4/8/6P1/1R2Q3

#2

6 + 1

4883 Still More Fun with Chess Miniatures 2002
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kd8?
      • 1...Kc6
        • 2.Qe4#
        • 2.Qe6#
      • 1...Kc4!
    • 1.Rb3?
      • 1...Kc4
        • 2.Qe6#
      • 1...Kc6!
    • 1.Rb7?
      • 1...Kc6
        • 2.Qe4#
      • 1...Kc4!
    • 1.Qf1?
      • 1...Ke4
        • 2.Qf3#
      • 1...Ke6
        • 2.Qf7#
      • 1...Kc6!
    • 1.Qe3?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kc6!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Rb6#
        • 2.Qd6#
      • 1...Kc4!
    • 1.Qe7?
      • 1...Kc6
        • 2.Qd6#
        • 2.Qb7#
        • 2.Qd7#
      • 1...Kc4!
  • Keys
    • 1.Qg3!
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qe5#

Anticipated by 24210(1927), 231090(1927), 33184(1938), 16378(1940), 30942(1943), 47022(1955), 73436(1961), 12363(1978)

This anticipates 142078(1989), 84992(1992), 79159(2005)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
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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).