MESON Chess Problem Database

Problem Display
PID: 16022 (8/1K2N3/3p4/3P2P1/1PN1kn2/5RR1/B7/8 w - - 0 1)

Brown, David Leo

OchoxOcho, 2000

8/1K2N3/3p4/3P2P1/1PN1kn2/5RR1/B7/8

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Rxf4#
  • Tries
    • 1.Sd2+?
      • 1...Kd4
        • 2.Sc6#
      • 1...Ke5!
    • 1.Sxd6+?
      • 1...Kd4
        • 2.Sc6#
      • 1...Ke5!
    • 1.Bb1+?
      • 1...Kd4
        • 2.Rxf4#
      • 1...Sd3!
    • 1.Rg4?
      • threat
        • 2.Rgxf4#
      • 1...Kd4
        • 2.Rgxf4#
      • 1...Kxf3!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sxd6#
      • 1...Kxd5
        • 2.Sd2#
      • 1...Kf5
        • 2.Bb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::R(B),XS(b)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::S(I)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(E);CHECK,XP(c)
      • Vars
        • K(a);P-FLIGHT::S(I)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • K(a);P-FLIGHT::R(B),XS(b)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • R(C);P_PINS(b)
      • Threat
        • R1(C),XS(b)
      • Vars
        • K(a);P-FLIGHT::R(C),XS(b)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XR(B)
  • Actual
    • S(I);
    • Threat
      • S(E),XP(c)
    • Vars
      • K(a);S_FLIGHT,XP(F)::B(A)+S(E)
      • K(a);P_SPINS(b),S_FLIGHT::B(A)
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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).