MESON Chess Problem Database

Problem Display
PID: 227919 (7Q/2B5/5pp1/6pN/6kP/3K4/8/6N1 w - - 0 1)

Boros, Sandor

Weisz, Odon

Nepszava, 1926

7Q/2B5/5pp1/6pN/6kP/3K4/8/6N1

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh4
      • 2.Sxf6#
    • 1...Kf5
      • 2.Qc8#
    • 1...f5
      • 2.Sf6#
  • Tries
    • 1.Qxf6?
      • threat
        • 2.Qxg5#
      • 1...Kxh5
        • 2.Qxg5#
      • 1...gxh4
        • 2.Qxg6#
      • 1...Kxh4!
  • Keys
    • 1.Qh7!
      • 1...Kxh4
        • 2.Sxf6#
      • 1...Kf5
        • 2.Qd7#
      • 1...gxh4
        • 2.Qxg6#
      • 1...gxh5
        • 2.Qe4#
      • 1...f5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,XP(C)::QAR(F)+S(D),XP(c)
    • K(a);S_FLIGHT::QAB(F)
    • P(c);SBLOCK::S(D)
  • Tries
    • Try
      • Q(F);XP(c)
      • Threat
        • QAR1(F),XP(b)
      • Vars
        • K(a);S_FLIGHT,XS(D)::QAR1(F),XP(b)
        • P(b);OGATEB,SBLOCK,XP(C)::QAR2(F),XP(d)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XP(C)
  • Actual
    • Q(F);
    • Vars
      • K(a);P-FLIGHT,XP(C)::QAR(F)+S(D),XP(c)
      • K(a);P_SPINP(d),S_FLIGHT::QAB(F)
      • P(b);OGATEB,SBLOCK,XP(C)::QAR2(F),XP(d)
      • P(d);OGATE,SBLOCK,XS(D)::QAR2(F)
      • P(c);SBLOCK::S(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).