MESON Chess Problem Database

Problem Display
PID: 187845 (8/5K2/1BN1P3/1bPk4/4p3/1P6/2Pb4/7Q w - - 0 1)

Kalniczky, Geza

3/4 Prize, Deutsche Schachblatter, 1910

8/5K2/1BN1P3/1bPk4/4p3/1P6/2Pb4/7Q

#2

8 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Qxe4#
  • Tries
    • 1.Qa1?
      • threat
        • 2.Se7#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Bxc6
        • 2.c4#
      • 1...e3
        • 2.Qh1#
      • 1...Bg5
        • 2.Sb4#
      • 1...Bc3!
    • 1.c4+?
      • 1...Kxc6
        • 2.Qxe4#
      • 1...Bxc4!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Se7#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Bxc6
        • 2.c4#
      • 1...e3
        • 2.Qh1#
      • 1...Bg5
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT,XS(F)::QAB(A),XP(b)
  • Tries
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • S(F)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XS(F)::QAB(A)
        • B(c);N_GUARD,SBLOCK,XS(F)::P(B)
        • P(b);OGATEB::QAB(A)
        • B(a);N_GUARD::S(F)
      • Refutation
        • B(a);
    • Try
      • P(B);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(F)::QAB(A),XP(b)
      • Refutation
        • B(c);XP(B)
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • S(F)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(F)::QAB(A)
      • B(c);N_GUARD,SBLOCK,XS(F)::P(B)
      • P(b);OGATEB::QAB(A)
      • B(a);N_GUARD::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).