MESON Chess Problem Database

Problem Display
PID: 152342 (b7/2b5/3p3p/7k/r4R2/3B1PKN/8/3Q4 w - - 0 1)

Bohm, Ferenc

L'Italia Scacchistica, 1930

b7/2b5/3p3p/7k/r4R2/3B1PKN/8/3Q4

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rh4#
    • 1...Ra2
      • 2.Rh4#
    • 1...Ra3
      • 2.Rh4#
    • 1...Ra5
      • 2.Rh4#
    • 1...Ra6
      • 2.Rh4#
    • 1...Ra7
      • 2.Rh4#
    • 1...Bxf3
      • 2.Qxf3#
  • Tries
    • 1.Qxa4?
      • threat
        • 2.Rh4#
        • 2.Qe8#
      • 1...Bd8
        • 2.Qe8#
      • 1...Bd5
        • 2.Rh4#
      • 1...Bc6
        • 2.Rh4#
      • 1...d5
        • 2.Qe8#
      • 1...Be4!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Bg6#
      • 1...Rg4+
        • 2.fxg4#
      • 1...d5+
        • 2.f4#
      • 1...Re4
        • 2.fxe4#
      • 1...Be4
        • 2.fxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::R1(F)
    • R(a);N_GUARD,SBLOCK::R1(F)
    • B(f);OGATE,P_SPINB(f),XP(C)::QAB(A),XB(f)
  • Tries
    • Try
      • Q(A);XR(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::QAB(A)
        • B(f);::R1(F)
        • P(c);P_PINR(F)::QAB(A)
      • Refutation
        • B(f);
  • Actual
    • R(F);
    • Threat
      • B(B)
    • Vars
      • R(a);CHECK,OGATE::P(C),XR(a)
      • P(c);CHECK,S_CUTB(f)::QAB(A)+P(C)
      • R(a);OGATE::QAB(A)+P(C),XR(a)
      • B(f);OGATE::QAB(A)+P(C),XB(f)
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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).