MESON Chess Problem Database

Problem Display
PID: 18556 (8/1K6/2R5/3k4/5Q2/1P6/4P3/b7 w - - 0 1)

Speckmann, Werner

Schweizerische Arbeiter Schachzeitung, 1956

8/1K6/2R5/3k4/5Q2/1P6/4P3/b7

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.e4#
    • 1...Be5
      • 2.Qc4#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Rd6#
      • 1...Be5
        • 2.Qc4#
      • 1...Bd4+!
    • 1.Re6?
      • threat
        • 2.Qd6#
        • 2.Qc4#
      • 1...Kc5
        • 2.Qc4#
      • 1...Bd4
        • 2.Qd6#
      • 1...Be5
        • 2.Qxe5#
        • 2.Qc4#
      • 1...Kxe6!
  • Keys
    • 1.b4!
      • threat
        • 2.Rd6#
      • 1...Bd4
        • 2.e4#
      • 1...Be5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::P(A)
    • B(a);SBLOCK::QAB1(C)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • R1(D)
      • Vars
        • B(a);SBLOCK::QAB1(C)
      • Refutation
        • B(a);CHECK
    • Try
      • R(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • B(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
  • Actual
    • P(B);
    • Threat
      • R1(D)
    • Vars
      • B(a);SBLOCK::P(A)
      • B(a);SBLOCK::QAB1(C)
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).