MESON Chess Problem Database

Problem Display
PID: 227899 (8/8/5Q2/1Pkp4/Pp6/1K6/8/8 w - - 0 1)

Ballo, Gyorgy

Magyar Sakkvilag, 1926

8/8/5Q2/1Pkp4/Pp6/1K6/8/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Qc6#
  • Tries
    • 1.Qa6?
      • 1...d4
        • 2.Qc6#
      • 1...Kd4!
    • 1.Qe6?
      • 1...d4
        • 2.Qc6#
      • 1...Kd4!
    • 1.Qg6?
      • 1...d4
        • 2.Qc6#
      • 1...Kd4!
    • 1.Qh6?
      • 1...d4
        • 2.Qc6#
      • 1...Kd4!
  • Keys
    • 1.a5!
      • threat
        • 2.Qb6#
      • 1...Kxb5
        • 2.Qb6#
      • 1...d4
        • 2.Qe5#
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(c);SBLOCK::QAR1(D)
  • Tries
    • Try
      • Q(D);
      • Vars
        • P(c);SBLOCK::QAR1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(c);SBLOCK::QAR1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(c);SBLOCK::QAR1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(c);SBLOCK::QAR1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(B);
    • Threat
      • QAB1(D)
    • Vars
      • K(b);P-FLIGHT,XP(C)::QAR1(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).