Problem Display
PID: 193331 (5nQ1/6Rp/8/7k/8/8/7p/1K5n w - - 0 1)

Hody, Janos

Eskilstuna Kuriren, 1914

5nQ1/6Rp/8/7k/8/8/7p/1K5n

#2

3 + 5


6490 yacpdb 2019

SOLUTION


  • SOUND
  • Sets
    • 1...Se6
      • 2.Rxh7#
      • 2.Qxh7#
    • 1...Sd7
      • 2.Rxh7#
      • 2.Qxh7#
  • Tries
    • 1.Rg3?
      • threat
        • 2.Rh3#
        • 2.Qg5#
      • 1...Kh4
        • 2.Qg4#
        • 2.Qg5#
      • 1...Kh6
        • 2.Rh3#
        • 2.Qg5#
      • 1...Sf2
        • 2.Qg5#
      • 1...Se6
        • 2.Rh3#
        • 2.Qxh7#
      • 1...Sg6
        • 2.Qxh7#
      • 1...h6
        • 2.Rh3#
        • 2.Qg4#
      • 1...Sxg3!
    • 1.Rg5+?
      • 1...Kh6
        • 2.Qg7#
      • 1...Kh4!
    • 1.Qd5+?
      • 1...Kh6
        • 2.Qg5#
      • 1...Kh4!
  • Keys
    • 1.Rg2!
      • threat
        • 2.Rxh2#
        • 2.Qg5#
      • 1...Kh4
        • 2.Rxh2#
        • 2.Qg4#
      • 1...Kh6
        • 2.Rxh2#
        • 2.Qg5#
      • 1...Sf2
        • 2.Qg5#
      • 1...Sg3
        • 2.Rxh2#
      • 1...Se6
        • 2.Rxh2#
        • 2.Qxh7#
      • 1...Sg6
        • 2.Qxh7#
      • 1...h6
        • 2.Rxh2#
        • 2.Qg4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(C)
        • S(e);N_GUARD::QAR2(C),XP(d)
      • Refutation
        • S(a);XR(B)
    • Try
      • R(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • R(B);
    • Threat
      • DUALS(2)
    • Vars
      • S(a);::QAR1(C)
      • S(a);::R(B),XP(b)
      • S(e);N_GUARD::QAR2(C),XP(d)


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).