MESON Chess Problem Database

Problem Display
PID: 274978 (8/3Q2K1/5p2/4p3/4k3/4P3/2N2Pb1/4RR2 w - - 0 1)

Neukomm, Kornel

Die Schwalbe, 1933

8/3Q2K1/5p2/4p3/4k3/4P3/2N2Pb1/4RR2

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qf5#
    • 1...Bh3
      • 2.f3#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Qg4#
      • 1...Bf3
        • 2.Qd3#
      • 1...Bh3
        • 2.f3#
      • 1...f5
        • 2.Qc6#
        • 2.Qd5#
        • 2.Qb7#
      • 1...Kf3!
    • 1.Qd3+?
      • 1...Kf3
        • 2.Qf5#
      • 1...Kxd3!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qg4#
      • 1...Kf3
        • 2.Qf5#
      • 1...Bf3
        • 2.Qd3#
      • 1...Bh3
        • 2.f3#
      • 1...f5
        • 2.Qc6#
        • 2.Qd5#
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::QAR2(F)
    • B(a);N_GUARD::P(D)
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR2(F)
      • Vars
        • B(a);SBLOCK::QAB1(F)
        • B(a);N_GUARD::P(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR2(F)
      • Refutation
        • K(b);S_FLIGHT,XQ(F)
  • Actual
    • S(C);
    • Threat
      • QAR2(F)
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAR2(F)
      • B(a);SBLOCK::QAB1(F)
      • B(a);N_GUARD::P(D)
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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).