MESON Chess Problem Database

Problem Display
PID: 47227 (4k3/8/4K3/b7/8/8/2Q5/8 w - - 0 1)

Kling, Josef

The Chess Euclid, 1849

4k3/8/4K3/b7/8/8/2Q5/8

#2

2 + 2

4883 Still More Fun with Chess Miniatures 2002
3713 Snap 2003
136 Problem Observer 2013
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qc8#
    • 1...Bd2
      • 2.Qc8#
    • 1...Bb4
      • 2.Qc8#
  • Tries
    • 1.Qa4+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8!
    • 1.Qg6+?
      • 1...Kf8
        • 2.Qf7#
      • 1...Kd8!
    • 1.Qh7?
      • threat
        • 2.Qg8#
        • 2.Qe7#
        • 2.Qh8#
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8
        • 2.Qf7#
        • 2.Qh8#
      • 1...Bc3
        • 2.Qg8#
        • 2.Qe7#
      • 1...Bd8
        • 2.Qg8#
        • 2.Qf7#
        • 2.Qh8#
      • 1...Bb4!
    • 1.Qb2?
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qh8#
      • 1...Bc3
        • 2.Qb8#
      • 1...Bb4!
    • 1.Qc6+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8!
    • 1.Qc7?
      • threat
        • 2.Qe7#
      • 1...Kf8
        • 2.Qf7#
      • 1...Bb4
        • 2.Qb8#
        • 2.Qc8#
      • 1...Bxc7!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qh8#
      • 1...Bb4
        • 2.Qb8#
      • 1...Bc3
        • 2.Qb8#

This anticipates 110515(1870), 36807(1898), 183106(1907), 193729(1916), 166257(1917), 149134(1929), 255603(1934), 172254(1996), 173962(2005), 169981(2017)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAR2(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • B(a);N_GUARD::QAR(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • B(a);N_GUARD::QAR(A)
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).