MESON Chess Problem Database

Problem Display
PID: 159239 (7Q/q5n1/3PP3/1R1Nk3/p3N1P1/1BPP4/4R1r1/1K4b1 w - - 0 1)

Apro, Laszlo

Wiadomoscy Szachowy, 1937

7Q/q5n1/3PP3/1R1Nk3/p3N1P1/1BPP4/4R1r1/1K4b1

#2

12 + 6

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4+?
      • 1...Qc5
        • 2.Sg6#
      • 1...Bc5
        • 2.Sg6#
      • 1...Kxf4!
    • 1.Se7+?
      • 1...Qc5
        • 2.Sg6#
      • 1...Bc5
        • 2.Sg6#
      • 1...Kf4!
    • 1.Qxg7+?
      • 1...Kxe6
        • 2.Sf4#
        • 2.Sc7#
      • 1...Qxg7!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qf6#
      • 1...Kxe6
        • 2.Sc5#
      • 1...Qf2
        • 2.Sxf2#
        • 2.Se3#
      • 1...Qe7
        • 2.Se3#
      • 1...Qf7
        • 2.Sf2#
      • 1...Rf2
        • 2.Sb6#
      • 1...Sh5
        • 2.Qf5#
      • 1...Se8
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • Q(e);P_SPINQ(e)::S(I)
        • B(a);P_SPINB(a)::S(I)
      • Refutation
        • K(d);N_SPINS(f),S_FLIGHT,XS(I)
    • Try
      • S(I);CHECK
      • Vars
        • Q(e);P_SPINQ(e)::S(I)
        • B(a);P_SPINB(a)::S(I)
      • Refutation
        • K(d);N_SPINS(f),S_FLIGHT
    • Try
      • Q(L);CHECK,XS(f)
      • Refutation
        • Q(e);XQ(L)
  • Actual
    • Q(L);N_PINS(f)
    • Threat
      • QAB1(L)
    • Vars
      • K(d);P-FLIGHT,XP(K)::R(B)+S(F),DCHECK
      • Q(e);N_GUARD::R(H)+S(I)
      • Q(e);N_GUARD::R(B)+S(F)
      • R(b);S_CUTB(a)::R(H)+S(I)
      • S(f);N_GUARD::QAR1(L)
HTML5 logo

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).