MESON Chess Problem Database

Problem Display
PID: 283866 (8/8/3N2K1/2pk4/8/1R4Q1/8/8 w - - 0 1)

Anonymous

Bolton Football Field, 1894

(First published on Sat Jul 28 1894)

8/8/3N2K1/2pk4/8/1R4Q1/8/8

#2

4 + 2

5454 Near Snap 2026
15239 Valois Notebooks 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Rd3#
  • Tries
    • 1.Sf7?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...c4!
  • Keys
    • 1.Sc4!
      • 1...Kxc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#

This anticipates 287454(2020)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,P-FLIGHT::R1(A)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(B)
        • K(b);N_GUARD,P-FLIGHT::QAR1(B)
        • K(b);N_GUARD,S_FLIGHT::QAR1(B)
      • Refutation
        • P(a);
  • Actual
    • S(C);
    • Vars
      • K(b);N_GUARD,S_FLIGHT,XS(C)::QAB1(B)
      • K(b);N_GUARD,P-FLIGHT::QAR1(B)
      • K(b);N_GUARD,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).