MESON Chess Problem Database

Problem Display
PID: 44388 (4R3/3p1p1n/3Nbb1B/6n1/3kN3/K6p/B3P3/5Q2 w - - 0 1)

Gilberg, Charles Alexander

Source?, 0000

4R3/3p1p1n/3Nbb1B/6n1/3kN3/K6p/B3P3/5Q2

#2

8 + 8

176 Crumbs from the Chess-board 1890

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qf2#
    • 1...Bg4
      • 2.Qg1#
      • 2.Qf2#
    • 1...Bd5
      • 2.Sf5#
      • 2.Qg1#
      • 2.Qf2#
    • 1...Bf5
      • 2.Sxf5#
      • 2.Qg1#
      • 2.Qf2#
    • 1...Be5
      • 2.Qg1#
      • 2.Qf2#
    • 1...Sf3
      • 2.Qa1#
  • Tries
    • 1.Qd1+?
      • 1...Ke3
        • 2.Qd2#
      • 1...Ke5!
    • 1.Qxf6+?
      • 1...Ke3
        • 2.Qf2#
      • 1...Sxf6!
    • 1.e3+?
      • 1...Ke5
        • 2.Qb5#
        • 2.Qa1#
        • 2.Qf4#
        • 2.Qf5#
      • 1...Kxe3!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qc5#
      • 1...Ke3
        • 2.Qf2#
      • 1...Bxf5
        • 2.Sxf5#
      • 1...Sxe4
        • 2.Sb5#
      • 1...Bd5
        • 2.Qf2#
      • 1...Be5
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(b);P_SPINS(c),S_FLIGHT::QAB1(A)
    • S(c);::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P_SPINS(c),S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);P_SPINB(d),S_FLIGHT
    • Try
      • Q(A);CHECK,XB(e)
      • Vars
        • K(b);P_SPINS(c),S_FLIGHT::QAB1(A)
      • Refutation
        • S(h);XQ(A)
    • Try
      • P(C);CHECK
      • Refutation
        • K(b);P_SPINS(c),S_FLIGHT,XP(C)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);P_SPINS(c),S_FLIGHT::QAB1(A)
      • B(d);XQ(A)::S(F),XB(d)
      • S(c);XS(E)::S(F)
      • B(d);::QAB(A)
      • B(e);SBLOCK::QAB(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).