Problem Display
PID: 249374 (8/5Q2/1K6/1N2k3/8/2p3P1/4P3/8 w - - 0 1)

Vetter, Hans

Deutsche Schachzeitung, 1965

8/5Q2/1K6/1N2k3/8/2p3P1/4P3/8

#2

5 + 2


6490 yacpdb 2021

SOLUTION


  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe6#
  • Tries
    • 1.Ka5?
      • 1...Ke4
        • 2.Qe6#
      • 1...c2!
    • 1.Kc5?
      • 1...Ke4
        • 2.Qe6#
        • 2.Qf4#
      • 1...c2!
    • 1.Ka6?
      • 1...Ke4
        • 2.Qe6#
      • 1...c2!
    • 1.Kc6?
      • 1...Ke4
        • 2.Qe6#
        • 2.Qf4#
      • 1...c2!
    • 1.Ka7?
      • 1...Ke4
        • 2.Qe6#
      • 1...c2!
    • 1.Kb7?
      • 1...Ke4
        • 2.Qe6#
      • 1...c2!
    • 1.Kc7?
      • 1...Ke4
        • 2.Qe6#
      • 1...c2!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Sc7#
      • 1...Ke6!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Qf4#
      • 1...Kd4
        • 2.Qf4#
      • 1...Ke4
        • 2.Qf4#
      • 1...Kd6
        • 2.Qe6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(E)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR2(E)
      • Refutation
        • P(a);
    • Try
      • K(D);S_FLIGHT
      • Refutation
        • P(a);
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR2(E)
      • Refutation
        • P(a);
    • Try
      • K(D);P-FLIGHT
      • Refutation
        • P(a);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR2(E)
      • Refutation
        • P(a);
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR2(E)
      • Refutation
        • P(a);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR2(E)
      • Refutation
        • P(a);
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::S(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);S_FLIGHT::QAR2(E)
      • K(b);P-FLIGHT::QAR1(E)
      • K(b);S_FLIGHT::QAR1(E)


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).