Problem Display
PID: 241948 (8/6N1/1K2pQ2/3k4/8/3P4/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/6N1/1K2pQ2/3k4/8/3P4/8/8

#2

4 + 2


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qxe6#
    • 1...e5
      • 2.Qd8#
  • Tries
    • 1.Kb5?
      • 1...e5
        • 2.Qd8#
      • 1...Kd6!
    • 1.Kc7?
      • 1...e5
        • 2.Qd6#
      • 1...Kc5!
    • 1.Sf5?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Qc6#
        • 2.Qd6#
        • 2.Qf7#
      • 1...exf5!
  • Keys
    • 1.Se8!
      • 1...e5
        • 2.Qd6#

FEATURES


  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::QAR1(C),XP(b)
    • P(b);SBLOCK::QAR(C)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(b);SBLOCK::QAR(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(b);OGATE::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);
      • Threat
        • QAR1(C)
      • Refutation
        • P(b);XS(D)
  • Actual
    • S(D);
    • Vars
      • P(b);OGATE::QAR1(C)


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).