MESON Chess Problem Database

Problem Display
PID: 231421 (4R2K/3p4/4b3/3pk1p1/1P6/1N3Q2/6N1/8 w - - 0 1)

Gartner, Lajos

Nepszava, 1927

4R2K/3p4/4b3/3pk1p1/1P6/1N3Q2/6N1/8

#2

6 + 5

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g4
      • 2.Qf4#
  • Tries
    • 1.Sd4?
      • 1...Kd6
        • 2.Qg3#
      • 1...g4
        • 2.Qf4#
      • 1...d6
        • 2.Sc6#
      • 1...Kxd4!
  • Keys
    • 1.Sa5!
      • 1...Kd4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qg3#
      • 1...d4
        • 2.Sc4#
      • 1...g4
        • 2.Qf4#
      • 1...d6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAB1(C)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);N_SPINB(d),S_FLIGHT::QAB(C)
        • P(c);N_GUARD::QAB1(C)
        • P(e);N_GUARD,SBLOCK::S(B)
      • Refutation
        • K(b);N_SPINB(d),S_FLIGHT,XS(B)
  • Actual
    • S(B);
    • Vars
      • K(b);N_SPINB(d),S_FLIGHT::QAB1(C)
      • K(b);N_SPINB(d),S_FLIGHT::QAB(C)
      • P(a);N_GUARD,SBLOCK::S(B)
      • P(c);N_GUARD::QAB1(C)
      • P(e);N_GUARD,SBLOCK::S(B)
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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).