MESON Chess Problem Database

Problem Display
PID: 234727 (2k1K3/2r1b3/1QP5/8/3N4/8/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2013

2k1K3/2r1b3/1QP5/8/3N4/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb7
      • 2.Qxb7#
    • 1...Rd7
      • 2.cxd7#
  • Tries
    • 1.Qa6+?
      • 1...Rb7
        • 2.Qxb7#
      • 1...Kb8!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qxc7#
      • 1...Rxc6
        • 2.Sa7#
      • 1...Rb7
        • 2.Qxb7#
      • 1...Ra7
        • 2.Sxa7#
      • 1...Rd7
        • 2.cxd7#
      • 1...Bd6
        • 2.Sxd6#
      • 1...Bd8
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD::QAB1(B),XR(a)
    • R(a);OGATE::P(C),XR(a)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(B),XR(a)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • QAR1(B),XR(a)
    • Vars
      • R(a);N_GUARD,XP(C)::S(A)
      • R(a);N_GUARD::QAB1(B),XR(a)
      • R(a);N_GUARD::S(A),XR(a)
      • R(a);OGATE::P(C),XR(a)
      • B(b);N_GUARD::S(A),XB(b)
      • B(b);N_GUARD::S(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).