MESON Chess Problem Database

Problem Display
PID: 267854 (1Bbq3r/PQrkpP1R/8/3PP2B/1n6/8/8/5K2 w - - 0 1)

Bellavista, N

El Diluvio, 1932

1Bbq3r/PQrkpP1R/8/3PP2B/1n6/8/8/5K2

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qe8
      • 2.Qxc7#
    • 1...Qf8
      • 2.Qxc7#
    • 1...Qg8
      • 2.Qxc7#
    • 1...Rxb7
      • 2.e6#
    • 1...Sxd5
      • 2.Qxd5#
    • 1...e6
      • 2.f8S#
  • Tries
    • 1.Qb5+?
      • 1...Rc6
        • 2.e6#
      • 1...Sc6!
  • Keys
    • 1.a8S!
      • threat
        • 2.Sb6#
      • 1...Rxb7
        • 2.e6#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Qe8
        • 2.Qxc7#
      • 1...Qf8
        • 2.Qxc7#
      • 1...Qg8
        • 2.Qxc7#
      • 1...e6
        • 2.f8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(f);N_GUARD::QAR1(F),XR(b)
    • Q(f);N_GUARD,P_PINP(G)::QAR1(F),XR(b)
    • R(b);N_SPINR(b),XQ(F)::P(C)
    • S(a);OGATE,XP(B)::QAR2(F),XS(a)
    • P(d);::P=S
  • Tries
    • Try
      • Q(F);CHECK,N_PINR(b)
      • Vars
        • R(b);P_SPINR(b)::P(C)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • P(E);
    • Threat
      • S(E)
    • Vars
      • R(b);N_SPINR(b),XQ(F)::P(C)
      • S(a);OGATE,XP(B)::QAR2(F),XS(a)
      • Q(f);N_GUARD::QAR1(F),XR(b)
      • Q(f);N_GUARD,P_PINP(G)::QAR1(F),XR(b)
      • P(d);::P=S
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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).