MESON Chess Problem Database

Problem Display
PID: 157651 (2Q1n3/4Pp2/5N2/2P1kPp1/6P1/6K1/3P1B2/3n4 w - - 0 1)

Znamenacek, Josef

Besedy lidu, 1901

2Q1n3/4Pp2/5N2/2P1kPp1/6P1/6K1/3P1B2/3n4

#2

9 + 5

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Qa6?
      • threat
        • 2.d4#
      • 1...Sxf2
        • 2.Qa1#
      • 1...Se3
        • 2.Qa1#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sxf6!
    • 1.Qc7+?
      • 1...Kxf6
        • 2.Bd4#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sxc7!
    • 1.Qa8?
      • threat
        • 2.Sd7#
      • 1...Sxf2
        • 2.Qa1#
      • 1...Sxf6
        • 2.d4#
      • 1...Se3
        • 2.Qa1#
      • 1...Kxf6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Sd7#
      • 1...Kxf6
        • 2.Bd4#
      • 1...Sxf2
        • 2.Qb2#
      • 1...Sxf6
        • 2.d4#
      • 1...Se3
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(I);
      • Threat
        • P(A)
      • Vars
        • S(a);N_GUARD,XB(B)::QAB(I)
        • S(a);N_GUARD::QAB(I)
        • S(e);N_GUARD::QAB1(I),XS(e)
      • Refutation
        • S(e);XS(G)
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);S_FLIGHT,XS(G)::B(B)
        • S(e);N_GUARD,P_SPINS(e)::QAB1(I),XS(e)
      • Refutation
        • S(e);XQ(I)
    • Try
      • Q(I);
      • Threat
        • S(G)
      • Vars
        • S(a);N_GUARD,XB(B)::QAB(I)
        • S(e);SBLOCK,XS(G)::P(A)
        • S(a);N_GUARD::QAB(I)
      • Refutation
        • K(b);S_FLIGHT,XS(G)
  • Actual
    • Q(I);
    • Threat
      • S(G)
    • Vars
      • K(b);S_FLIGHT,XS(G)::B(B)
      • S(a);N_GUARD,XB(B)::QAB(I)
      • S(e);SBLOCK,XS(G)::P(A)
      • S(a);N_GUARD::QAB(I)
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).