MESON Chess Problem Database

Problem Display
PID: 237312 (8/7Q/4K3/6k1/8/6B1/8/8 w - - 0 1)

Speckmann, Werner

Schweizerische Arbeiter Schachzeitung, 1967

8/7Q/4K3/6k1/8/6B1/8/8

#2

3 + 1

15148 Sadier Collection 2021
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Kd5?
      • 1...Kf6
        • 2.Bh4#
      • 1...Kg4!
    • 1.Kd6?
      • 1...Kf6
        • 2.Bh4#
      • 1...Kg4!
    • 1.Be1?
      • 1...Kg4
        • 2.Qf5#
      • 1...Kf4!
    • 1.Qf7?
      • 1...Kh6
        • 2.Bf4#
      • 1...Kg4!
  • Keys
    • 1.Bf2!
      • 1...Kf4
        • 2.Qf5#
      • 1...Kg4
        • 2.Qf5#

This anticipates 34906(1999)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);P-FLIGHT::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).