MESON Chess Problem Database

Problem Display
PID: 167184 (1q1B2n1/3pN3/3k3p/2pN4/Bpp2R2/4R2K/rQ6/b7 w - - 0 1)

Barnes, Barry Peter

The Problemist, 2017

1q1B2n1/3pN3/3k3p/2pN4/Bpp2R2/4R2K/rQ6/b7

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qc7
      • 2.Bxc7#
    • 1...Qb5
      • 2.Bc7#
    • 1...Qa8
      • 2.Bc7#
    • 1...Sf6
      • 2.Rxf6#
  • Tries
    • 1.Sc7?
      • threat
        • 2.Se8#
        • 2.Sf5#
      • 1...Qxd8
        • 2.Sb5#
      • 1...Rxa4
        • 2.Se8#
      • 1...Sxe7
        • 2.Rf6#
      • 1...Qb5
        • 2.Sxb5#
        • 2.Se8#
      • 1...Sf6
        • 2.Sf5#
        • 2.Rxf6#
      • 1...Qxc7!
    • 1.Rd4?
      • threat
        • 2.Sf5#
      • 1...Rxa4
        • 2.Qh2#
      • 1...Sxe7
        • 2.Bxe7#
      • 1...Qb5
        • 2.Bc7#
      • 1...cxd4!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sf5#
      • 1...Qxd8
        • 2.Sb5#
      • 1...Rxa4
        • 2.Qd2#
      • 1...Sxe7
        • 2.Rf6#
      • 1...bxc3
        • 2.Qxb8#
      • 1...Qb5
        • 2.Sxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(i);N_GUARD::B(H),XQ(i)
    • Q(i);N_GUARD::B(H)
    • S(j);N_GUARD::R(E),XS(j)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);N_GUARD,XB(H)::S(F)
        • R(b);XB(D)::S(F)
        • S(j);N_GUARD,XS(G)::R(E)
      • Refutation
        • Q(i);XS(F)
    • Try
      • R(E);
      • Threat
        • S(G)
      • Vars
        • R(b);N_GUARD,XB(D)::QAB(A)
        • S(j);OGATE,XS(G)::B(H),XS(j)
        • Q(i);N_GUARD::B(H)
      • Refutation
        • P(e);XR(E)
  • Actual
    • S(F);
    • Threat
      • S(G)
    • Vars
      • Q(i);N_GUARD,XB(H)::S(F)
      • R(b);N_GUARD,XB(D)::QAR(A)
      • S(j);N_GUARD,XS(G)::R(E)
      • P(c);OGATE,XS(F)::QAB(A),XQ(i)
      • Q(i);N_GUARD::S(F),XQ(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).