MESON Chess Problem Database

Problem Display
PID: 7704 (1B2q3/5rN1/2R1P1r1/3pNQ2/1P1k1PR1/3P1P2/4K3/7b w - - 0 1)

Barnes, Barry Peter

3rd HM., The Problemist, 1992

1B2q3/5rN1/2R1P1r1/3pNQ2/1P1k1PR1/3P1P2/4K3/7b

#2

12 + 6

4199 Barnes about Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.fxg5#
    • 1...Rxf5
      • 2.Sxf5#
      • 2.Ba7#
    • 1...Rf6
      • 2.Ba7#
    • 1...Ra7
      • 2.Bxa7#
    • 1...Rf8
      • 2.Ba7#
    • 1...Bxf3+
      • 2.Sxf3#
  • Keys
    • 1.Qf6!
      • threat
        • 2.Sf5#
      • 1...Bxf3+
        • 2.Sxf3#
      • 1...Qxc6
        • 2.Sxc6#
      • 1...Qxe6
        • 2.Sxe6#
      • 1...Rgxf6
        • 2.f5#
      • 1...Rgxg7
        • 2.Sxf7#
      • 1...Rfxf6
        • 2.Ba7#
      • 1...Rfxg7
        • 2.Sxg6#
      • 1...Rg5
        • 2.fxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(d);OGATE::R(F)+P(E),XR(d)
    • R(e);N_GUARD::B(L)
    • R(e);N_GUARD::B(L),XR(e)
    • B(a);CHECK,XP(C)::S(G),XB(a)
  • Actual
    • Q(H);
    • Threat
      • S(K)
    • Vars
      • B(a);CHECK,XP(C)::QAB(H)+S(G),DCHECK,XB(a)
      • Q(f);XR(I)::QAB(H)+S(G),DCHECK,XQ(f)
      • Q(f);P_PINS(G),XP(J)::S(K),XQ(f)
      • R(d);N_GUARD,XQ(H)::R(F)+P(E)
      • R(d);N_GUARD,XS(K)::QAB(H)+S(G),XR(e)
      • R(e);N_GUARD,XQ(H)::B(L)
      • R(e);N_GUARD,XS(K)::QAB(H)+S(G),XR(d)
      • R(d);OGATE::R(F)+P(E),XR(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).