MESON Chess Problem Database

Problem Display
PID: 43262 (3n2K1/5ppP/1p1P1kN1/Q1r1N3/5P2/5p1B/4b3/4R3 w - - 0 1)

Paslack, Rainer

Probleemblad, 2002

3n2K1/5ppP/1p1P1kN1/Q1r1N3/5P2/5p1B/4b3/4R3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Qxd8#
    • 1...fxg6
      • 2.Sd7#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Sd7#
      • 1...Rxe5
        • 2.Qxe5#
      • 1...Bb5
        • 2.Sg4#
      • 1...Rc7!
    • 1.Sf8?
      • threat
        • 2.Sed7#
        • 2.Sfd7#
      • 1...Rxe5
        • 2.Qxe5#
      • 1...Rc7
        • 2.Sg4#
      • 1...Bb5!
    • 1.h8Q?
      • threat
        • 2.Qxg7#
        • 2.Qh4#
      • 1...Rxe5
        • 2.Qxg7#
      • 1...fxg6
        • 2.Sd7#
        • 2.Qxg7#
      • 1...Se6!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sd7#
      • 1...Rxe5
        • 2.Qxe5#
      • 1...Rc7
        • 2.Sd5#
      • 1...Bb5
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(d);OGATE::QAB(D),XS(h)
    • P(f);SBLOCK,XS(G)::S(E)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(E)
      • Vars
        • R(c);OGATE,XS(E)::QAB1(D),XR(c)
        • B(a);::S(E)
      • Refutation
        • R(c);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);OGATE,XS(E)::QAB1(D),XR(c)
        • R(c);::S(E)
      • Refutation
        • B(a);
    • Try
      • P(H);P_PINP(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XS(E)::QAB1(H),XP(g)
      • Refutation
        • S(h);
  • Actual
    • S(G);
    • Threat
      • S(E)
    • Vars
      • R(c);OGATE,XS(E)::QAB1(D),XR(c)
      • R(c);N_GUARD::S(G)
      • B(a);::S(E)
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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).