MESON Chess Problem Database

Problem Display
PID: 273268 (5R1b/8/1N2kp2/5p2/1Q1K4/8/8/8 w - - 0 1)

Reilly, William Henry

The Problemist, 1931

5R1b/8/1N2kp2/5p2/1Q1K4/8/8/8

#2

4 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • threat
        • 2.Qd6#
      • 1...Kd7
        • 2.Qd6#
      • 1...f4!
    • 1.Sc8?
      • threat
        • 2.Qd6#
        • 2.Qe7#
      • 1...Kd7
        • 2.Qd6#
      • 1...f4!
    • 1.Qa4?
      • threat
        • 2.Qd7#
      • 1...Kd6
        • 2.Qd7#
      • 1...Ke7!
    • 1.Qb5?
      • threat
        • 2.Qd7#
      • 1...Kd6
        • 2.Qd7#
      • 1...Ke7!
  • Keys
    • 1.Kc5!
      • threat
        • 2.Qe1#
      • 1...Ke5
        • 2.Re8#
      • 1...Ke7
        • 2.Kd5#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAR(A)
    • Vars
      • K(b);N_GUARD,P-FLIGHT::R(D)
      • K(b);P-FLIGHT::QAB(A)+K(B)
      • P(a);N_GUARD::QAR2(A)
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).