MESON Chess Problem Database

Problem Display
PID: 198651 (8/5Q2/3kN3/8/2K5/3N4/8/8 w - - 0 1)

Stewart, John

Western Morning News, 1921

8/5Q2/3kN3/8/2K5/3N4/8/8

#2

4 + 1

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qc7#
  • Tries
    • 1.Sc1?
      • 1...Kc6
        • 2.Qc7#
      • 1...Ke5!
    • 1.Se1?
      • 1...Kc6
        • 2.Qc7#
      • 1...Ke5!
    • 1.Sb2?
      • 1...Kc6
        • 2.Qc7#
      • 1...Ke5!
    • 1.Sf2?
      • 1...Kc6
        • 2.Qc7#
      • 1...Ke5!
    • 1.Sdf4?
      • threat
        • 2.Qc7#
      • 1...Kc6
        • 2.Qc7#
      • 1...Ke5!
    • 1.Qa7?
      • 1...Kc6
        • 2.Qc7#
      • 1...Kxe6!
    • 1.Qe7+?
      • 1...Kc6
        • 2.Qc7#
      • 1...Kxe7!
    • 1.Qg7?
      • 1...Kc6
        • 2.Qc7#
      • 1...Kxe6!
    • 1.Qh7?
      • 1...Kc6
        • 2.Qc7#
      • 1...Kxe6!
  • Keys
    • 1.Sdc5!
      • threat
        • 2.Qc7#
      • 1...Ke5
        • 2.Qf4#
      • 1...Kc6
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(D)
  • Tries
    • Try
      • S(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Threat
        • QAB1(D)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • Q(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • S(A);
    • Threat
      • QAB1(D)
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);P-FLIGHT::QAR1(D)
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).