MESON Chess Problem Database

Problem Display
PID: 218511 (7K/8/3P2R1/4pk1p/1Q2N2r/7p/3P3R/8 w - - 0 1)

Dennis, Charles Edwin

Cincinnati Commercial, 1881

7K/8/3P2R1/4pk1p/1Q2N2r/7p/3P3R/8

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Rf2#
    • 1...Rg4
      • 2.Rf6#
  • Tries
    • 1.Kh7?
      • threat
        • 2.Sg3#
      • 1...Kf4
        • 2.Rf2#
      • 1...Rg4
        • 2.Rf6#
      • 1...Rxe4!
    • 1.Rf2+?
      • 1...Kxg6
        • 2.Rf6#
      • 1...Rf4!
    • 1.Rg5+?
      • 1...Kf4
        • 2.Rf2#
      • 1...Ke6!
    • 1.Qb7?
      • 1...Kf4
        • 2.Rf2#
      • 1...Kxg6
        • 2.Qh7#
      • 1...Rxe4
        • 2.Qf7#
      • 1...Rg4
        • 2.Rf6#
      • 1...Rf4!
  • Keys
    • 1.Qc4!
      • 1...Kf4
        • 2.Rf2#
      • 1...Kxg6
        • 2.Qe6#
      • 1...Rxe4
        • 2.Qf7#
      • 1...Rf4
        • 2.Rg5#
      • 1...Rg4
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT::R(B)
    • R(b);SBLOCK::R1(F)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Threat
        • S(D)
      • Vars
        • K(d);P-FLIGHT::R(B)
        • R(b);SBLOCK::R1(F)
      • Refutation
        • R(b);XS(D)
    • Try
      • R(B);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT,XR(F)::R1(B)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • R(F);CHECK
      • Vars
        • K(d);P-FLIGHT::R(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(d);P-FLIGHT::R(B)
        • K(d);OGATEB,S_FLIGHT,XR(F)::QAB1(C)
        • R(b);SBLOCK,XS(D)::QAR2(C)
        • R(b);SBLOCK::R1(F)
      • Refutation
        • R(b);
  • Actual
    • Q(C);
    • Vars
      • K(d);P-FLIGHT::R(B)
      • K(d);S_FLIGHT,XR(F)::QAR2(C)
      • R(b);SBLOCK,XS(D)::QAR2(C)
      • R(b);SBLOCK::R1(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).