MESON Chess Problem Database

Problem Display
PID: 232405 (6b1/5pK1/8/2p3kp/2Q1p1pr/4p1p1/8/8 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1986

6b1/5pK1/8/2p3kp/2Q1p1pr/4p1p1/8/8

#2

2 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qf6#
      • 1...f6
        • 2.Qxf6#
      • 1...f5!
    • 1.Qe6?
      • threat
        • 2.Qf6#
      • 1...Kf4
        • 2.Qf6#
      • 1...f5
        • 2.Qh6#
      • 1...f6
        • 2.Qxf6#
      • 1...fxe6!
    • 1.Qc3?
      • threat
        • 2.Qf6#
      • 1...Kf4
        • 2.Qf6#
      • 1...Kf5
        • 2.Qf6#
      • 1...f6
        • 2.Qxf6#
      • 1...f5!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qf6#
      • 1...Kf4
        • 2.Qf6#
      • 1...Kf5
        • 2.Qf6#
      • 1...f5
        • 2.Qh6#
      • 1...f6
        • 2.Qxf6#

This is a version of 85714

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(i);::QAB1(A),XP(i)
      • Refutation
        • P(i);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(g);S_FLIGHT::QAR2(A)
        • P(i);SBLOCK::QAB1(A)
        • P(i);::QAB1(A),XP(i)
      • Refutation
        • P(i);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(g);S_FLIGHT::QAR2(A)
        • K(g);P-FLIGHT::QAR1(A)
        • P(i);::QAB1(A),XP(i)
      • Refutation
        • P(i);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(g);S_FLIGHT::QAR2(A)
      • K(g);P-FLIGHT::QAR1(A)
      • P(i);SBLOCK::QAB1(A)
      • P(i);::QAB1(A),XP(i)
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).