MESON Chess Problem Database

Problem Display
PID: 109787 (K3R3/8/3N1k1q/8/5P2/8/6Q1/8 w - - 0 1)

Zuk, Henryk

Trybuna Robotnicza, 1955

K3R3/8/3N1k1q/8/5P2/8/6Q1/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg5
      • 2.Qxg5#
    • 1...Qf8
      • 2.Qg5#
    • 1...Qh2
      • 2.Qg5#
    • 1...Qh3
      • 2.Qg5#
    • 1...Qg6
      • 2.Qb2#
    • 1...Qh7
      • 2.Qg5#
    • 1...Qh8
      • 2.Qg5#
  • Tries
    • 1.Se4+?
      • 1...Kf7
        • 2.Qg8#
      • 1...Kf5!
    • 1.Qg8?
      • threat
        • 2.Re6#
        • 2.Qf7#
      • 1...Qxf4
        • 2.Re6#
      • 1...Qg7
        • 2.Re6#
        • 2.Qe6#
      • 1...Qf8
        • 2.Qg5#
      • 1...Qh3
        • 2.Qf7#
        • 2.Qg5#
      • 1...Qh5
        • 2.Re6#
      • 1...Qg6
        • 2.Re6#
      • 1...Qh7
        • 2.Re6#
        • 2.Qg5#
      • 1...Qh1+!
  • Keys
    • 1.f5!
      • threat
        • 2.Re6#
      • 1...Qg5
        • 2.Qb2#
      • 1...Qg6
        • 2.Qxg6#
      • 1...Qe3
        • 2.Qg6#
      • 1...Qf8
        • 2.Qg6#
      • 1...Qh8
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_GUARD::QAB1(A),XQ(b)
    • Q(b);N_GUARD,P_PINR(E)::QAB1(A)
    • Q(b);N_GUARD::QAB1(A)
    • Q(b);SBLOCK::QAB(A)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XP(B)::R1(E)
        • Q(b);N_GUARD,P_PINR(E)::QAB1(A)
        • Q(b);::R1(E)
      • Refutation
        • Q(b);CHECK
  • Actual
    • P(B);
    • Threat
      • R1(E)
    • Vars
      • Q(b);SBLOCK::QAB(A)
      • Q(b);N_GUARD::QAR1(A),XQ(b)
      • Q(b);N_GUARD::QAR1(A)
      • Q(b);N_GUARD,P_PINR(E)::QAR1(A)
HTML5 logo

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).