MESON Chess Problem Database

Problem Display
PID: 186846 (8/p7/P2N2K1/3k4/P7/Q7/6P1/B7 w - - 0 1)

Grupen, Claus

Problem Observer, 2018

8/p7/P2N2K1/3k4/P7/Q7/6P1/B7

#2

7 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kxc4!
    • 1.Se4?
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kc4!
    • 1.Sb5?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kc4!
    • 1.Sb7?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kc4!
    • 1.Sf7?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kc4!
    • 1.Sc8?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kc4!
    • 1.Se8?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kc4!
  • Keys
    • 1.Sf5!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • S(F);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(F)::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(F);
    • Vars
      • K(a);S_FLIGHT::S(F)
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);S_FLIGHT::QAR1(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).