MESON Chess Problem Database

Problem Display
PID: 276718 (8/8/8/2B5/3R1R2/4k3/8/4nK2 w - - 0 1)

Mott-Smith, Geoffrey

Seven is the Limit, 1989

8/8/8/2B5/3R1R2/4k3/8/4nK2

#2

4 + 2

15601 Albrecht-Leiss-Degener Collection 2024
5454 Near Snap 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Rfe4#
  • Tries
    • 1.Ba3?
      • threat
        • 2.Bc1#
      • 1...Sf3
        • 2.Rfe4#
      • 1...Sd3!
    • 1.Rg4?
      • 1...Kf3
        • 2.Rdf4#
      • 1...Sc2
        • 2.Rg3#
      • 1...Sg2
        • 2.Rg3#
      • 1...Sf3
        • 2.Rge4#
      • 1...Sd3!
    • 1.Rh4?
      • 1...Kf3
        • 2.Rh3#
      • 1...Sc2
        • 2.Rh3#
      • 1...Sg2
        • 2.Rh3#
      • 1...Sf3
        • 2.Rhe4#
      • 1...Sd3!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Bd2#
      • 1...Sd3
        • 2.Rde4#
      • 1...Sf3
        • 2.Rfe4#

Anticipated by 211431(1967)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::R1(C)
  • Tries
    • Try
      • B(D);
      • Threat
        • B(D)
      • Vars
        • S(a);SBLOCK::R1(C)
      • Refutation
        • S(a);
    • Try
      • R(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT::R1(B)
        • S(a);N_GUARD::R(C)
        • S(a);SBLOCK::R1(C)
      • Refutation
        • S(a);
    • Try
      • R(C);
      • Vars
        • K(b);P-FLIGHT,S_CUTS(a)::R(C)
        • S(a);N_GUARD::R(C)
        • S(a);SBLOCK::R1(C)
      • Refutation
        • S(a);
  • Actual
    • B(D);
    • Threat
      • B(D)
    • Vars
      • S(a);SBLOCK::R1(B)
      • S(a);SBLOCK::R1(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).