MESON Chess Problem Database

Problem Display
PID: 93801 (1B6/b7/Qp1n4/1B1P4/N2kP2R/4p3/2P1p2K/1b6 w - - 0 1)

Klir, Antonin

Ceske listy sachove, 1899

1B6/b7/Qp1n4/1B1P4/N2kP2R/4p3/2P1p2K/1b6

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.c3#
    • 1...Sb7
      • 2.c3#
    • 1...Sf7
      • 2.c3#
    • 1...Sc8
      • 2.c3#
    • 1...Se8
      • 2.c3#
  • Tries
    • 1.Qc8?
      • threat
        • 2.Qc3#
        • 2.Qh8#
      • 1...Ke5
        • 2.Qc3#
        • 2.Qh8#
      • 1...Sxe4
        • 2.Qc4#
      • 1...Sxc8
        • 2.c3#
      • 1...e1Q
        • 2.Qh8#
      • 1...e1B
        • 2.Qh8#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sf5
        • 2.Qc3#
        • 2.Qc4#
        • 2.c3#
      • 1...Sf7
        • 2.Qc3#
        • 2.Qc4#
        • 2.c3#
      • 1...Se8
        • 2.Qc3#
        • 2.Qc4#
        • 2.c3#
      • 1...Sxb5!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qg7#
      • 1...Ke5
        • 2.Qg7#
      • 1...Sxe4
        • 2.c3#
      • 1...Sxb5
        • 2.e5#
      • 1...Sxb7
        • 2.c3#
      • 1...Sc4
        • 2.e5#
      • 1...Sf5
        • 2.c3#
        • 2.exf5#
      • 1...Sf7
        • 2.c3#
        • 2.e5#
      • 1...Se8
        • 2.c3#
        • 2.e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(f);::P(A)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);N_GUARD,P_SPINS(f),XP(D)::QAR1(H)
        • S(f);XQ(H)::P(A)
        • P(b);::QAB(H)
        • S(f);N_GUARD::QAR1(H),XS(f)
      • Refutation
        • S(f);XB(F)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • K(d);P_SPINS(f),S_FLIGHT::QAB(H)
      • S(f);P_SPINS(f),XP(D)::P(A)
      • S(f);N_GUARD,XB(F)::R(E)+P(D)
      • S(f);XQ(H)::P(A)
      • S(f);N_GUARD::R(E)+P(D)
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).