MESON Chess Problem Database

Problem Display
PID: 99516 (1b3N1n/2Q5/1n1qRp1B/6r1/4Pk1K/2P5/4R3/4N2b w - - 0 1)

Labai, Zoltan

Magyar Sakkelet, 1976

1b3N1n/2Q5/1n1qRp1B/6r1/4Pk1K/2P5/4R3/4N2b

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Rxf6#
    • 1...Bf3
      • 2.Sd3#
    • 1...Ba7
      • 2.Qxd6#
    • 1...Sg6+
      • 2.Sxg6#
    • 1...Sf7
      • 2.Sg6#
    • 1...f5
      • 2.Bxg5#
  • Tries
    • 1.Rf2+?
      • 1...Bf3
        • 2.Sg2#
        • 2.Rxf3#
      • 1...Ke3!
  • Keys
    • 1.Re5!
      • threat
        • 2.Rf5#
      • 1...Sg6+
        • 2.Sxg6#
      • 1...Kxe5
        • 2.Sd3#
      • 1...Qxe5
        • 2.Se6#
      • 1...Bxe4
        • 2.R2xe4#
      • 1...fxe5
        • 2.Bxg5#
      • 1...f5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(e);::R(F),XP(f)
    • B(a);SBLOCK::S(A)
    • B(g);N_GUARD::QAB(H),XQ(e)
    • S(h);CHECK,N_GUARD::S(I),XS(h)
    • S(h);N_GUARD::S(I)
    • P(f);N_GUARD::B(G),XR(c)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(b);N_SPINQ(e),S_FLIGHT
  • Actual
    • R(F);N_PINQ(e)
    • Threat
      • R1(F)
    • Vars
      • S(h);CHECK,N_GUARD::S(I),XS(h)
      • K(b);N_SPINR(c),P_SPINQ(e),S_FLIGHT,XR(F)::S(A)
      • Q(e);N_GUARD,P_SPINQ(e),XR(F)::S(I)
      • B(a);OGATE,XP(D)::R1(B),XB(a)
      • P(f);N_GUARD,SBLOCK,XR(F)::B(G),XR(c)
      • P(f);::R1(F),XP(f)
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).