MESON Chess Problem Database

Problem Display
PID: 234703 (8/1p6/k2p4/2Bp4/K6Q/8/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2012

8/1p6/k2p4/2Bp4/K6Q/8/8/8

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qd8?
      • threat
        • 2.Qa5#
        • 2.Qb6#
        • 2.Qa8#
      • 1...dxc5
        • 2.Qa5#
      • 1...b6
        • 2.Qxb6#
        • 2.Qa8#
      • 1...b5+!
    • 1.Qc4+?
      • 1...b5+
        • 2.Qxb5#
      • 1...dxc4!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qa5#
        • 2.Qb5#
        • 2.Qb6#
      • 1...b5+
        • 2.Qxb5#
      • 1...dxc5
        • 2.Qa5#
      • 1...b6
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);XB(C)::QAR1(B)
      • Refutation
        • P(d);CHECK
    • Try
      • Q(B);CHECK
      • Vars
        • P(d);CHECK,P_SPINP(d)::QAB1(B),XP(d)
      • Refutation
        • P(a);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • DUALS(3)
    • Vars
      • P(d);CHECK::QAB1(B),XP(d)
      • P(c);XB(C)::QAR1(B)
      • P(d);::QAR1(B),XP(d)
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).