MESON Chess Problem Database

Problem Display
PID: 198878 (4R3/8/3P1Q2/4N3/6PB/4kPq1/4N1np/2KB1n2 w - - 0 1)

Kintzig, Robert

Bekes, 1921

4R3/8/3P1Q2/4N3/6PB/4kPq1/4N1np/2KB1n2

#2

10 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kf2
      • 2.Sd3#
    • 1...Qxf3
      • 2.Qxf3#
  • Tries
    • 1.Sd3+?
      • 1...Kxd3
        • 2.Qc3#
        • 2.Qd4#
      • 1...Qe5!
    • 1.Sc4+?
      • 1...Kd3
        • 2.Sb2#
        • 2.Qc3#
        • 2.Qd4#
      • 1...Kf2!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qa7#
      • 1...Kf2
        • 2.Sd3#
      • 1...Qxe5
        • 2.Qb3#
      • 1...Qxf3
        • 2.Qxf3#
      • 1...Qxg4
        • 2.Qb3#
      • 1...Qf4
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINQ(e),S_FLIGHT::S(G)
    • Q(e);OGATE,XP(D)::QAR1(I),XQ(e)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • Q(e);P_SPINQ(e)
    • Try
      • S(G);CHECK
      • Refutation
        • K(d);P_SPINQ(e),S_FLIGHT
  • Actual
    • Q(I);
    • Threat
      • QAB(I)
    • Vars
      • K(d);P_SPINQ(e),S_FLIGHT::S(G)
      • Q(e);P_SPINQ(e),XS(G)::QAR(I)
      • Q(e);OGATE,XP(D)::QAR1(I),XQ(e)
      • Q(e);XP(E)::QAR(I)
      • Q(e);::QAR(I)
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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).