MESON Chess Problem Database

Problem Display
PID: 70855 (Q7/1N2p3/4BPN1/1r1pp3/2p1k3/1pP3p1/3PK3/8 w - - 0 1)

Leites, Samuil Davidovich

Deutsche Schachzeitung, 1976

Q7/1N2p3/4BPN1/1r1pp3/2p1k3/1pP3p1/3PK3/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Sc5#
    • 1...Rc5
      • 2.Sxc5#
    • 1...Rb6
      • 2.Sc5#
    • 1...d4
      • 2.Sc5#
      • 2.Sd6#
    • 1...exf6
      • 2.Sd6#
  • Tries
    • 1.Qa4?
      • threat
        • 2.d3#
      • 1...Rb4
        • 2.Sc5#
      • 1...d4!
    • 1.Qa7?
      • threat
        • 2.Qe3#
      • 1...Rc5
        • 2.Sxc5#
      • 1...Rb6
        • 2.Sc5#
      • 1...d4!
    • 1.Qb8?
      • threat
        • 2.Qxe5#
      • 1...exf6
        • 2.Sd6#
      • 1...d4!
    • 1.fxe7?
      • threat
        • 2.Sd6#
      • 1...Rb6
        • 2.Sc5#
      • 1...Rxb7!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(e);N_GUARD::S(G)
    • R(e);N_GUARD::S(G),XR(e)
    • P(h);N_GUARD,XP(E)::S(G)
  • Tries
    • Try
      • Q(H);P_PINP(c)
      • Threat
        • P(A)
      • Vars
        • R(e);N_GUARD,N_SPINP(c)::S(G)
      • Refutation
        • P(f);N_SPINP(c)
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • R(e);N_GUARD::S(G),XR(e)
        • R(e);N_GUARD::S(G)
      • Refutation
        • P(f);
    • Try
      • Q(H);
      • Threat
        • QAR1(H),XP(g)
      • Vars
        • P(h);N_GUARD,XP(E)::S(G)
      • Refutation
        • P(f);
    • Try
      • P(E);XP(h)
      • Threat
        • S(G)
      • Vars
        • R(e);N_GUARD::S(G)
      • Refutation
        • R(e);XS(G)
  • Actual
    • Q(H);
    • Threat
      • QAR(H)
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).