Problem Display
PID: 18092 (8/3p4/Q7/2p5/N1P3N1/2PkPp2/b3r3/2Kn1B2 w - - 0 1)

Peris Pardo, Julio

1st Prize, Magasinet, 1953

8/3p4/Q7/2p5/N1P3N1/2PkPp2/b3r3/2Kn1B2

#2

8 + 7


3105 FIDE Album (1945-1955) 1964

SOLUTION


  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qg6#
    • 1...Bxc4
      • 2.Qg6#
    • 1...Sxc3
      • 2.Sxc5#
    • 1...Sxe3
      • 2.Sf2#
  • Tries
    • 1.Qd6+?
      • 1...Ke4
        • 2.Qd5#
        • 2.Qg6#
      • 1...Kxc4!
    • 1.Qe6?
      • threat
        • 2.Qd5#
      • 1...Bxc4
        • 2.Qf5#
        • 2.Qg6#
      • 1...Sxc3
        • 2.Sb2#
        • 2.Sxc5#
        • 2.Sf2#
      • 1...Sxe3
        • 2.Sf2#
      • 1...d5
        • 2.Qxd5#
      • 1...dxe6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qd5#
      • 1...Kxc4
        • 2.Se5#
      • 1...Bxc4
        • 2.Qb1#
      • 1...Sxc3
        • 2.Sb2#
      • 1...Sxe3
        • 2.Se5#
      • 1...d5
        • 2.Qxd5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(d);N_SPINR(c),S_FLIGHT::QAB(H)
    • B(b);P_SPINB(b),SBLOCK,XP(F)::QAB(H)
    • S(a);SBLOCK,XP(C)::S(E),XP(f)
    • S(a);N_GUARD,SBLOCK,XP(D)::S(G)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • K(d);S_FLIGHT,XP(F)
    • Try
      • Q(H);
      • Threat
        • QAR2(H)
      • Vars
        • S(a);N_GUARD,XP(D)::S(G)
        • P(g);::QAR2(H),XP(g)
      • Refutation
        • P(g);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAR2(H)
    • Vars
      • K(d);S_FLIGHT,XP(F)::S(G)
      • B(b);N_GUARD,SBLOCK,XP(F)::QAB(H)
      • S(a);N_GUARD,SBLOCK,XP(C)::S(E)
      • S(a);SBLOCK,XP(D)::S(G)
      • P(g);::QAR2(H),XP(g)


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).