MESON Chess Problem Database

Problem Display
PID: 121435 (1K6/1p2p1p1/3P4/1p1k1B2/1P3Pr1/2P4Q/6P1/1n6 w - - 0 1)

Dunka, Gyorgy Jusztin

Sachove listy, 1902

1K6/1p2p1p1/3P4/1p1k1B2/1P3Pr1/2P4Q/6P1/1n6

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Be6#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qc5#
      • 1...Kc4
        • 2.Be6#
      • 1...Kc6
        • 2.Qc5#
      • 1...Kxd6
        • 2.Qc5#
        • 2.Qe6#
      • 1...exd6
        • 2.Qe4#
      • 1...b6!
    • 1.Qf3+?
      • 1...Kc4
        • 2.Be6#
      • 1...Kxd6!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Be6#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kxd6
        • 2.Qd3#
      • 1...Rxf4
        • 2.Qe6#
      • 1...Rg3
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::B(F)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(d);S_FLIGHT::B(F)
        • K(d);S_FLIGHT::QAR1(C)
        • P(f);SBLOCK,XP(G)::QAB1(C)
      • Refutation
        • P(e);
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);S_FLIGHT::B(F)
      • Refutation
        • K(d);P-FLIGHT,XP(G)
  • Actual
    • B(F);
    • Threat
      • QAR2(C)
    • Vars
      • K(d);S_FLIGHT::B(F)
      • K(d);S_FLIGHT::QAB1(C)
      • K(d);P-FLIGHT,XP(G)::QAR(C)
      • R(b);OGATE,XP(E)::QAB1(C)
      • R(b);OGATE::QAB1(C)
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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).