MESON Chess Problem Database

Problem Display
PID: 224646 (3b1r2/4Nn1R/4nkp1/4R3/BQ6/3N4/b6K/8 w - - 0 1)

Belaguer, Emile A

The Sunny South, 1887

3b1r2/4Nn1R/4nkp1/4R3/BQ6/3N4/b6K/8

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rg8
      • 2.Sxg8#
    • 1...Bb1
      • 2.Sd5#
    • 1...Bd5
      • 2.Sxd5#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sc5
      • 2.Qf4#
    • 1...Seg5
      • 2.Qf4#
    • 1...Sc7
      • 2.Qf4#
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Sg4#
      • 1...Kxe5
        • 2.Sg4#
      • 1...Sxe5
        • 2.Se4#
      • 1...Sh6!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sd7#
      • 1...Kxe5
        • 2.Sd7#
      • 1...Kxe7
        • 2.Se4#
      • 1...Sxc5
        • 2.Qf4#
      • 1...Sxe5
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(g);N_GUARD::S(F),XR(g)
    • B(a);N_GUARD::S(F)
    • B(a);N_GUARD::S(F),XB(a)
    • S(b);N_GUARD::QAR2(D),XS(b)
    • S(b);N_GUARD::QAR2(D)
    • P(d);N_GUARD::R1(E)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • K(c);S_FLIGHT,XR(E)::S(B)
        • S(e);SBLOCK,XR(E)::S(B)
      • Refutation
        • S(e);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(c);S_FLIGHT,XR(E)::S(B)
      • K(c);P_SPINS(b),S_FLIGHT,XS(F)::QAB(D)+S(B)
      • S(b);N_GUARD,XS(B)::QAR2(D)
      • S(e);SBLOCK,XR(E)::S(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).