MESON Chess Problem Database

Problem Display
PID: 144658 (2RK4/3P4/BRN5/1N1k4/1P4Q1/1qP2Pnb/4nBr1/6b1 w - - 0 1)

Forster, Klaus

Probleemblad, 2011

2RK4/3P4/BRN5/1N1k4/1P4Q1/1qP2Pnb/4nBr1/6b1

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.c4#
    • 1...Qa4
      • 2.c4#
    • 1...Qb1
      • 2.c4#
    • 1...Qb2
      • 2.c4#
    • 1...Qa3
      • 2.c4#
    • 1...Sf1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sf5
      • 2.Qe4#
    • 1...Sh5
      • 2.Qe4#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Sc7#
        • 2.Se7#
      • 1...Ke6
        • 2.Sc7#
        • 2.Se7#
      • 1...Qxb4
        • 2.Sc7#
        • 2.Sxb4#
      • 1...Sf5
        • 2.Sc7#
        • 2.Qe4#
      • 1...Sxf4!
    • 1.Qg6?
      • threat
        • 2.Sc7#
      • 1...Kc4
        • 2.Se7#
      • 1...Be6!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Se7#
      • 1...Kc4
        • 2.Sc7#
      • 1...Ke6
        • 2.Se7#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...Sf5
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(d);N_GUARD::P(B)
    • S(e);N_GUARD::QAB1(E)
    • S(e);N_GUARD::QAB1(E),XS(e)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Refutation
        • S(b);XQ(E)
    • Try
      • Q(E);
      • Threat
        • S(F)
      • Vars
        • K(g);S_FLIGHT::R(K)+S(I)
      • Refutation
        • B(f);
  • Actual
    • Q(E);
    • Threat
      • S(I)
    • Vars
      • K(g);S_FLIGHT::B(G)+S(F)
      • K(g);S_FLIGHT::R(H)+S(I)
      • Q(d);XP(D)::S(I),XQ(d)
      • S(e);S_CUTB(f)::QAB(E)
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).