MESON Chess Problem Database

Problem Display
PID: 176100 (5B2/2qp4/1Rrnkp2/4N2Q/2P2RP1/1B3K2/8/8 w - - 0 1)

Mikulcak, Josef

Schach-Echo, 1938

5B2/2qp4/1Rrnkp2/4N2Q/2P2RP1/1B3K2/8/8

#2

9 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qe8#
      • 2.Qf5#
    • 1...Se4
      • 2.Qe8#
      • 2.Qf5#
    • 1...Sb5
      • 2.Qe8#
      • 2.Qf5#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sb7
      • 2.Qe8#
      • 2.Qf5#
    • 1...Sf7
      • 2.Qf5#
    • 1...Sc8
      • 2.Qf5#
    • 1...Se8
      • 2.Qxe8#
      • 2.Qf5#
    • 1...fxe5
      • 2.Qg6#
      • 2.Qh6#
  • Tries
    • 1.Qf7+?
      • 1...Kxe5
        • 2.Qd5#
        • 2.Qxf6#
        • 2.Qe7#
      • 1...Sxf7!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qd5#
      • 1...Rxc4
        • 2.Re4#
      • 1...Sxc4
        • 2.Sc5#
      • 1...f5
        • 2.Qg6#
      • 1...Rc5
        • 2.Qe8#
      • 1...Sf5
        • 2.gxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD,P_SPINR(a)::QAB1(G),XS(b)
    • S(b);N_GUARD,P_SPINR(a)::QAB1(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Refutation
        • S(b);P_SPINR(a),XQ(G)
  • Actual
    • S(F);
    • Threat
      • QAB1(G)
    • Vars
      • R(a);P_SPINR(a),P_SPINS(b),XP(C)::R(D)
      • S(b);P_SPINR(a),P_SPINS(b),XP(C)::S(F)
      • P(d);OGATEB::QAR2(G)
      • R(a);P_SPINS(b)::QAR2(G)
      • S(b);OGATE,P_SPINR(a)::P(E),XS(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).