MESON Chess Problem Database

Problem Display
PID: 234768 (8/8/8/8/5p2/8/K2Nk3/1B3NQ1 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2015

8/8/8/8/5p2/8/K2Nk3/1B3NQ1

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3?
      • 1...Kd1
        • 2.Sg3#
      • 1...Kxf3!
    • 1.Sc4?
      • 1...Kd1
        • 2.Sg3#
      • 1...Ke1
        • 2.Sg3#
      • 1...f3
        • 2.Sg3#
      • 1...Kf3!
    • 1.Se4?
      • 1...Kd1
        • 2.Sfg3#
      • 1...Ke1
        • 2.Sfg3#
      • 1...f3
        • 2.Sfg3#
      • 1...Kf3!
    • 1.Bc2?
      • 1...f3
        • 2.Qe3#
      • 1...Ke1!
  • Keys
    • 1.Sb3!
      • 1...Kd1
        • 2.Sg3#
      • 1...Ke1
        • 2.Sg3#
      • 1...Kf3
        • 2.Sd4#
      • 1...f3
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT::QAR(C)+S(B)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT::QAR(C)+S(B)
        • K(a);P-FLIGHT::QAR(C)+S(B)
        • P(b);N_GUARD,SBLOCK::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT::QAR(C)+S(B)
        • K(a);P-FLIGHT::QAR(C)+S(B)
        • P(b);N_GUARD,SBLOCK::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • P(b);N_GUARD::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);S_FLIGHT::QAR(C)+S(B)
      • K(a);P-FLIGHT::QAR(C)+S(B)
      • K(a);S_FLIGHT::S(E)
      • P(b);N_GUARD,SBLOCK::S(B)
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).