MESON Chess Problem Database

Problem Display
PID: 219863 (2Q5/8/2B4K/4k3/4P3/8/2R2P2/8 w - - 0 1)

Riczu, Lajos

Land og Folk, 1979

2Q5/8/2B4K/4k3/4P3/8/2R2P2/8

#2

6 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qf5#
  • Tries
    • 1.Rd2?
      • threat
        • 2.Qf5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd6!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qd5#
        • 2.Qd6#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxe6!
    • 1.Qd7?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6!
    • 1.Qf8?
      • 1...Kd4
        • 2.Qd6#
      • 1...Ke6!
  • Keys
    • 1.Bd5!
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd6
        • 2.Qe6#
        • 2.Qc7#
      • 1...Kf6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(F)
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR1(F)
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);P-FLIGHT,XQ(F)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);S_FLIGHT::QAR1(F)
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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).