MESON Chess Problem Database

Problem Display
PID: 240372 (nBbN1Q2/1pqp4/4p3/4k1P1/1KP5/3P4/4N2b/8 w - - 0 1)

Zilahi, Zoltan

Tijdschrift vd KNSB, 1927

nBbN1Q2/1pqp4/4p3/4k1P1/1KP5/3P4/4N2b/8

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6+
      • 2.Bxd6#
    • 1...Bg1
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...d6
      • 2.Qf6#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sf3#
      • 1...Qd6+
        • 2.Qxd6#
      • 1...Kxd4!
    • 1.Sc6+?
      • 1...dxc6
        • 2.Qc5#
      • 1...bxc6!
    • 1.Sxb7?
      • threat
        • 2.Qf6#
      • 1...Qd6+
        • 2.Bxd6#
      • 1...Bxb7!
    • 1.Bxc7+?
      • 1...d6
        • 2.Bxd6#
        • 2.Qf6#
      • 1...Sxc7!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Sf7#
      • 1...Qd6+
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Bf4
        • 2.Qxf4#
      • 1...d6
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(e);CHECK,OGATE::B(F),XQ(e)
    • B(a);N_GUARD::QAB1(H)
    • B(a);N_GUARD::QAB1(H),XB(a)
    • P(f);N_SPINQ(e),SBLOCK::QAB1(H)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • Q(e);CHECK,N_GUARD::QAB1(H),XQ(e)
      • Refutation
        • K(b);N_SPINQ(e),S_FLIGHT,XS(A)
    • Try
      • S(G);CHECK
      • Vars
        • P(f);XS(G)::QAR2(H)
      • Refutation
        • P(d);XS(G)
    • Try
      • S(G);XP(d)
      • Threat
        • QAB1(H)
      • Vars
        • Q(e);CHECK,OGATE::B(F),XQ(e)
      • Refutation
        • B(h);XS(G)
    • Try
      • B(F);CHECK,XQ(e)
      • Refutation
        • S(g);XB(F)
  • Actual
    • Q(H);
    • Threat
      • S(G)
    • Vars
      • Q(e);CHECK,S_CUTP(f)::QAR2(H)
      • K(b);S_FLIGHT::QAB1(H)
      • B(a);N_GUARD::QAB1(H),XB(a)
      • P(f);N_SPINQ(e),SBLOCK::QAB1(H)
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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).