Problem Display
PID: 184814 (7K/2N5/8/2P1kp2/8/2pB4/2P2P2/Q7 w - - 0 1)

Havasi, Kornel

Magyar Sakklap, 1908

7K/2N5/8/2P1kp2/8/2pB4/2P2P2/Q7

#2

7 + 3


6490 yacpdb 2018

SOLUTION


  • SOUND
  • Sets
    • 1...f4
      • 2.Qxc3#
  • Tries
    • 1.Qa6?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Kf4!
  • Keys
    • 1.Qg1!
      • 1...Kd4
        • 2.f4#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kf6
        • 2.Qg7#
      • 1...f4
        • 2.Qg7#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB(A),XP(a)
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAB1(A)
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT::QAB(A)+P(C)
      • K(b);S_FLIGHT::QAB1(A)
      • P(c);SBLOCK::QAB(A)


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).