MESON Chess Problem Database

Problem Display
PID: 9695 (1K2k3/8/3BB3/n7/4Q3/1p3r2/8/b7 w - - 0 1)

von Wardener, Friedrich Freiherr

HM., L'Echiquier Francais, 1908

1K2k3/8/3BB3/n7/4Q3/1p3r2/8/b7

#2

4 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Bd5+?
      • 1...Kd7
        • 2.Qe7#
      • 1...Kd8
        • 2.Qe7#
      • 1...Be5!
    • 1.Qc6+?
      • 1...Kd8
        • 2.Qd7#
        • 2.Qc8#
      • 1...Sxc6+!
    • 1.Qa4+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Sc6+!
  • Keys
    • 1.Kc7!
      • threat
        • 2.Qa8#
      • 1...Rc3+
        • 2.Bc4#
      • 1...Rf7+
        • 2.Bd7#
      • 1...Bf6
        • 2.Qg6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb7
        • 2.Qc6#
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR1(A)
        • K(e);P-FLIGHT::QAB1(A)
      • Refutation
        • B(a);P_PINB(B),P_SPINB(a)
    • Try
      • Q(A);CHECK
      • Refutation
        • S(d);CHECK,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(A)
      • Refutation
        • S(d);CHECK,P_SPINS(d)
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • QAR(A)
    • Vars
      • R(c);CHECK,S_CUTB(a)::QAR(A)+B(C)
      • R(c);CHECK,SBLOCK::QAR(A)+B(C),DCHECK
      • B(a);S_CUTR(c)::QAB(A)
      • S(d);N_GUARD::QAB(A),XS(d)
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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).