MESON Chess Problem Database

Problem Display
PID: 232491 (7Q/7B/8/8/8/3Nk3/8/5K2 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Freie Presse, 2012

7Q/7B/8/8/8/3Nk3/8/5K2

#2

4 + 1

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bf5?
      • 1...Kf3
        • 2.Qh3#
      • 1...Kd2!
    • 1.Bg6?
      • 1...Kf3
        • 2.Qh3#
      • 1...Kd2!
    • 1.Qa1?
      • 1...Kd2
        • 2.Qc1#
      • 1...Kf3!
    • 1.Qe5+?
      • 1...Kf3
        • 2.Qf4#
      • 1...Kd2!
    • 1.Qf8?
      • threat
        • 2.Qf2#
        • 2.Qf4#
      • 1...Kd4
        • 2.Qc5#
      • 1...Kd2!
  • Keys
    • 1.Qc8!
      • 1...Kd2
        • 2.Qc1#
      • 1...Kf3
        • 2.Qh3#
      • 1...Kd4
        • 2.Qc5#

Anticipated by 206947(1859), 4506(1873), 32680(1873), 218488(1882), 218611(1882), 24321(1885), 181144(1904), 182379(1906), 109336(1920), 22076(1924), 206740(1925), 76425(1929), 46372(1941), 18804(1958), 218807(1976), 138100(1981), 133136(1983), 211346(1986), 184446(2000), 47757(2003), 67253(2006)

This anticipates 235007(2019)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);P-FLIGHT::QAR2(D)
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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).