MESON Chess Problem Database

Problem Display
PID: 250242 (Bb1R2K1/3p4/Nn2Q3/3rP1N1/R1qk4/3P4/b2BP3/4n3 w - - 0 1)

Pikler, Robert

Magyar Sakkvilag, 1927

Bb1R2K1/3p4/Nn2Q3/3rP1N1/R1qk4/3P4/b2BP3/4n3

#2

11 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Sf3#
    • 1...Sg2
      • 2.Sf3#
    • 1...Sxd3
      • 2.e3#
    • 1...Sf3
      • 2.Sxf3#
    • 1...Sc8
      • 2.Qxd5#
  • Tries
    • 1.Rxc4+?
      • 1...Sxc4
        • 2.Qxd5#
      • 1...Bxc4!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qf4#
      • 1...Ra5+
        • 2.Se6#
      • 1...Rb5+
        • 2.Se6#
      • 1...Rc5+
        • 2.Se6#
      • 1...Rxe5+
        • 2.Se6#
      • 1...Rd6+
        • 2.e6#
      • 1...Bxe5
        • 2.Qf2#
      • 1...Sxd3
        • 2.e3#
      • 1...Sg2
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::S(F)
    • S(a);SBLOCK,XP(C)::P(B)
    • S(a);N_GUARD::S(F),XS(a)
    • S(f);N_GUARD::QAR1(H),XR(e)
  • Tries
    • Try
      • R(D);CHECK,XQ(c)
      • Vars
        • S(f);XR(D)::QAR1(H),XR(e)
      • Refutation
        • B(b);XR(D)
  • Actual
    • Q(H);
    • Threat
      • QAR2(H)
    • Vars
      • R(e);CHECK,P_SPINP(g)::S(F)
      • R(e);CHECK,P_SPINP(g),P_SPINR(e),XP(E)::S(F)
      • R(e);CHECK,N_GUARD,S_CUTB(h)::QAB(H)+P(E)
      • B(h);P_SPINB(h),SBLOCK,XP(E)::QAB(H)
      • S(a);SBLOCK,XP(C)::P(B)
      • S(a);N_GUARD::S(F)
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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).