MESON Chess Problem Database

Problem Display
PID: 107469 (6Q1/5p2/3PP2p/5p1p/6p1/3B1k2/5P2/6K1 w - - 0 1)

Hadzi-Vaskov, Georgi

Boletim da UBP, 1968

6Q1/5p2/3PP2p/5p1p/6p1/3B1k2/5P2/6K1

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Qxg3#
    • 1...f4
      • 2.Qa8#
  • Tries
    • 1.Qh7?
      • threat
        • 2.Qxf5#
      • 1...Kf4
        • 2.Qxf5#
      • 1...f4
        • 2.Qe4#
      • 1...fxe6!
    • 1.Qg5?
      • threat
        • 2.Qe3#
        • 2.Qxf5#
      • 1...fxe6
        • 2.Qe3#
      • 1...g3
        • 2.Qxg3#
        • 2.Qxf5#
      • 1...f4
        • 2.Qd5#
      • 1...hxg5!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Qxf5#
      • 1...Kf4
        • 2.Qxf5#
      • 1...f4
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATE::QAR1(F),XP(b)
    • P(c);SBLOCK::QAB(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR2(F),XP(c)
      • Vars
        • K(a);P-FLIGHT::QAR1(F),XP(c)
        • P(c);OGATE::QAB1(F)
      • Refutation
        • P(f);XP(E)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XP(E)::QAR1(F)
        • P(c);OGATE,SBLOCK::QAB(F)
      • Refutation
        • P(e);XQ(F)
  • Actual
    • Q(F);P_PINP(c),XP(f)
    • Threat
      • QAR2(F),XP(c)
    • Vars
      • K(a);P-FLIGHT::QAR1(F),XP(c)
      • P(c);SBLOCK::QAB(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).