MESON Chess Problem Database

Problem Display
PID: 154099 (b3Q3/8/3p1K2/3k4/4R3/b1p1pp2/8/8 w - - 0 1)

Wheeler, Charles Henry

Ur hans sammlung, 1887

b3Q3/8/3p1K2/3k4/4R3/b1p1pp2/8/8

#2

3 + 7

119 Tidskrift for Schack 1909

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Qxa8#
  • Tries
    • 1.Rb4?
      • threat
        • 2.Qb5#
      • 1...Kc5
        • 2.Qb5#
      • 1...Bc6
        • 2.Qh5#
      • 1...Bxb4!
    • 1.Rc4?
      • threat
        • 2.Qf7#
        • 2.Qe4#
        • 2.Qe6#
        • 2.Qg8#
      • 1...Bc5
        • 2.Qe4#
      • 1...Kxc4!
    • 1.Qb5+?
      • 1...Kxe4
        • 2.Qc4#
      • 1...Bc5!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qc4#
      • 1...Kxe4
        • 2.Qc4#
      • 1...Bc6
        • 2.Qf5#
      • 1...Bc5
        • 2.Qxa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAB(C),XB(g)
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR2(C)
      • Vars
        • K(e);P-FLIGHT::QAR1(C)
        • B(g);SBLOCK::QAR(C)
      • Refutation
        • B(a);XR(A)
    • Try
      • R(A);
      • Threat
        • DUALS(4)
      • Vars
        • B(a);::QAB1(C)
      • Refutation
        • K(e);S_FLIGHT,XR(A)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);S_FLIGHT,XR(A)::QAR2(C)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(e);S_FLIGHT,XR(A)::QAR2(C)
      • B(g);SBLOCK::QAR2(C)
      • B(a);SBLOCK::QAB(C),XB(g)
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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).