MESON Chess Problem Database

Problem Display
PID: 215118 (2b5/2prp1p1/R3PkPp/K4nbP/1N1P1p1r/P2N2pQ/2Bp4/B3q3 w - - 0 1)

Anonymous

SEPA, 1942

2b5/2prp1p1/R3PkPp/K4nbP/1N1P1p1r/P2N2pQ/2Bp4/B3q3

#2

12 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5+
      • 2.dxe5#
    • 1...Rxd4
      • 2.Sd5#
    • 1...Rd5+
      • 2.Sxd5#
    • 1...Sd6
      • 2.Sd5#
  • Keys
    • 1.Sf2!
      • threat
        • 2.Qxf5#
      • 1...Qe5+
        • 2.dxe5#
      • 1...Rd5+
        • 2.Sxd5#
      • 1...Rxh3
        • 2.Sg4#
      • 1...Sxd4
        • 2.Qf5#
      • 1...Qe4
        • 2.Sxe4#
      • 1...Rg4
        • 2.Sxg4#
      • 1...Se3
        • 2.Se4#
      • 1...Sd6
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(a);CHECK,OGATE::P(G),XQ(a)
    • R(k);N_GUARD,P_SPINR(k),XP(G)::S(F)
    • R(k);CHECK,N_GUARD::S(F),XR(k)
    • S(f);S_CUTR(k)::S(F)
  • Actual
    • S(D);
    • Threat
      • QAR1(E),XS(f)
    • Vars
      • Q(a);CHECK,OGATE::P(G),XQ(a)
      • R(k);CHECK,N_GUARD::S(F),XR(k)
      • R(e);N_GUARD,XQ(E)::S(D)
      • S(f);P_SPINS(f),XP(G)::QAR1(E)
      • Q(a);N_GUARD::S(D),XQ(a)
      • R(e);N_GUARD::S(D),XR(e)
      • S(f);S_CUTQ(a)::S(D)
      • S(f);S_CUTR(k)::S(F)
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).