MESON Chess Problem Database

Problem Display
PID: 277039 (1Q6/1P2B1P1/p2NPKp1/2pp2PP/3k3p/7B/3P1N2/8 w - - 0 1)

Labai, Zoltan

Die Schwalbe, 2024

1Q6/1P2B1P1/p2NPKp1/2pp2PP/3k3p/7B/3P1N2/8

#2

12 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qa7#
  • Tries
    • 1.Kf7?
      • threat
        • 2.Bf6#
      • 1...Ke5
        • 2.Sb5#
        • 2.Sf5#
      • 1...c4!
    • 1.Sc4?
      • threat
        • 2.Qf4#
      • 1...dxc4
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qd8#
      • 1...Kxc4!
    • 1.Sb5+?
      • 1...axb5
        • 2.Qf4#
      • 1...Kc4!
    • 1.Sf5+?
      • 1...gxf5
        • 2.Qf4#
      • 1...Kc4!
    • 1.Bf1?
      • 1...gxh5
        • 2.Sf5#
      • 1...c4
        • 2.Qa7#
      • 1...a5
        • 2.Sb5#
      • 1...h3!
    • 1.hxg6?
      • 1...c4
        • 2.Sf5#
        • 2.Qa7#
      • 1...a5!
    • 1.h6?
      • 1...c4
        • 2.Qa7#
      • 1...a5!
  • Keys
    • 1.Kxg6!
      • threat
        • 2.Bf6#
      • 1...Ke5
        • 2.Sb5#
      • 1...c4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB::QAB(L)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • B(J)
      • Refutation
        • P(c);
    • Try
      • S(F);
      • Threat
        • QAR2(L)
      • Refutation
        • K(a);P-FLIGHT,XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • P(e);XS(F)::QAR2(L)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • P(f);XS(F)::QAR2(L)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(C);
      • Vars
        • P(f);N_GUARD,XP(E)::S(F)
        • P(c);OGATEB::QAB(L)
        • P(e);N_GUARD::S(F)
      • Refutation
        • P(b);
    • Try
      • P(E);XP(f)
      • Refutation
        • P(e);
    • Try
      • P(E);
      • Vars
        • P(c);OGATEB::QAB(L)
      • Refutation
        • P(e);
  • Actual
    • K(H);P-FLIGHT,XP(f)
    • Threat
      • B(J)
    • Vars
      • K(a);N_GUARD,S_CUTP(e),S_FLIGHT::QAB(L)+S(F)
      • P(c);SBLOCK::S(F)
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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).