MESON Chess Problem Database

Problem Display
PID: 234693 (8/8/8/6pR/8/7b/3K3Q/5k2 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2011

8/8/8/6pR/8/7b/3K3Q/5k2

#2

3 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g4
      • 2.Rf5#
  • Tries
    • 1.Ke3?
      • threat
        • 2.Qh1#
        • 2.Qf2#
      • 1...Ke1
        • 2.Qe2#
      • 1...Bg2!
    • 1.Rxg5?
      • threat
        • 2.Rg1#
        • 2.Qg1#
        • 2.Qf4#
        • 2.Qe2#
      • 1...Bg2
        • 2.Qxg2#
      • 1...Bg4!
  • Keys
    • 1.Qg3!
      • 1...Bg2
        • 2.Qe1#
      • 1...Bg4
        • 2.Rh1#
      • 1...Bf5
        • 2.Rh1#
      • 1...Be6
        • 2.Rh1#
      • 1...Bd7
        • 2.Rh1#
      • 1...Bc8
        • 2.Rh1#
      • 1...g4
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE::R(C)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • B(b);
    • Try
      • R(C);XP(c)
      • Threat
        • DUALS(4)
      • Vars
        • B(b);N_GUARD::QAB1(B),XB(b)
      • Refutation
        • B(b);
  • Actual
    • Q(B);
    • Vars
      • B(b);SBLOCK::QAR1(B)
      • B(b);OGATE::R(C)
      • P(c);OGATE::R(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).