Problem Display
PID: 239734 (3BB2K/1p1N4/3kp3/1P1Pp3/8/1b5p/p1R3Qp/8 w - - 0 1)

Szoghy, Jozsef

Buletin Problemistic, 1979

3BB2K/1p1N4/3kp3/1P1Pp3/8/1b5p/p1R3Qp/8

#2

8 + 8


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Sets
    • 1...exd5
      • 2.Qg6#
    • 1...b6
      • 2.Rc6#
  • Tries
    • 1.Qg6?
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qd3#
      • 1...Bxd5!
    • 1.Qg8?
      • threat
        • 2.Qxe6#
      • 1...Bxd5
        • 2.Qf8#
      • 1...exd5
        • 2.Qg6#
      • 1...Kxd5!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Rd2#
      • 1...Bxd5
        • 2.Qb4#
      • 1...exd5
        • 2.Qg6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(g);OGATEB,SBLOCK,XP(D)::QAR(B)
    • P(h);N_GUARD::R1(A)
  • Tries
    • Try
      • Q(B);P_PINP(g)
      • Threat
        • QAR1(B),XP(g)
      • Vars
        • K(f);N_SPINP(g),OGATEB,P-FLIGHT,XP(D)::QAR2(B)
      • Refutation
        • B(c);XP(D)
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(g)
      • Vars
        • B(c);SBLOCK,XP(D)::QAB(B)
        • P(g);OGATEB,SBLOCK,XP(D)::QAR(B)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(g),XP(D)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(g)
    • Vars
      • K(f);OGATEB,P-FLIGHT,XP(D)::R(A)
      • B(c);SBLOCK,XP(D)::QAB(B)
      • P(g);OGATEB,SBLOCK,XP(D)::QAR(B)


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).