MESON Chess Problem Database

Problem Display
PID: 228629 (N5Q1/p1rP4/2k1N3/K7/b1p5/B4R2/6Rn/5n1B w - - 0 1)

Moen, Kabe

Problem Observer, 2019

N5Q1/p1rP4/2k1N3/K7/b1p5/B4R2/6Rn/5n1B

#2

9 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4+?
      • 1...Kxd7
        • 2.Rg7#
        • 2.Rf7#
      • 1...Kb7!
    • 1.Sc5?
      • threat
        • 2.Rg6#
        • 2.Rf6#
        • 2.Qe6#
      • 1...Kd6
        • 2.Qe6#
      • 1...Sxf3
        • 2.Rg6#
        • 2.Qe6#
      • 1...Bc2
        • 2.Rf6#
        • 2.Qe6#
      • 1...Sg3
        • 2.Rf6#
        • 2.Qe6#
      • 1...Sg4
        • 2.Qe6#
      • 1...Rxd7!
    • 1.Rg6?
      • threat
        • 2.Sc5#
      • 1...Kd5
        • 2.Rf5#
      • 1...Kb7
        • 2.Rb3#
      • 1...Kxd7
        • 2.Rf7#
      • 1...Rxd7
        • 2.Sd8#
      • 1...Sg4
        • 2.Rd3#
        • 2.Rf7#
      • 1...Bc2!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Sc5#
      • 1...Kd5
        • 2.Rg5#
      • 1...Kb7
        • 2.Rb2#
      • 1...Kxd7
        • 2.Rg7#
      • 1...Rxd7
        • 2.Sd8#
      • 1...Sg4
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • K(e);P-FLIGHT::QAR1(I)
        • S(b);::QAR2(I)
      • Refutation
        • R(g);XP(G)
    • Try
      • R(B);
      • Threat
        • R(B)+S(F)
      • Vars
        • K(e);S_FLIGHT::B(A)+R(D),DCHECK
        • K(e);S_FLIGHT,XP(G)::R(D)
        • R(g);SBLOCK,XP(G)::R(B)+S(F),DCHECK
      • Refutation
        • B(c);
  • Actual
    • R(D);
    • Threat
      • R(D)+S(F)
    • Vars
      • K(e);S_FLIGHT::B(A)+R(B),DCHECK
      • K(e);S_FLIGHT,XP(G)::R(B)
      • R(g);SBLOCK,XP(G)::R(D)+S(F),DCHECK
      • S(b);N_GUARD::B(A)+R(B)
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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).