MESON Chess Problem Database

Problem Display
PID: 17274 (4n2q/bN1BpNnp/1pp1p2R/7r/P1k5/P2R3b/2K5/4B3 w - - 0 1)

Stocchi, Ottavio

Comm., L'Echiquier, 1929-1931

4n2q/bN1BpNnp/1pp1p2R/7r/P1k5/P2R3b/2K5/4B3

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Se5#
    • 1...Re5
      • 2.Sxe5#
    • 1...Rxh6
      • 2.Se5#
    • 1...Bf5
      • 2.Se5#
    • 1...Sf5
      • 2.Bxe6#
    • 1...c5
      • 2.Bb5#
    • 1...e5
      • 2.Rxc6#
  • Keys
    • 1.Bf2!
      • threat
        • 2.Rd4#
      • 1...Rh4
        • 2.Se5#
      • 1...Rd5
        • 2.Rc3#
      • 1...Bf5
        • 2.Se5#
      • 1...Sf5
        • 2.Bxe6#
      • 1...b5
        • 2.Sa5#
      • 1...c5
        • 2.Bb5#
      • 1...e5
        • 2.Rxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD::S(I)
    • R(c);N_GUARD::S(I),XR(c)
    • R(c);N_GUARD,XR(F)::S(I)
    • B(a);P_PINR(D),S_CUTR(c)::S(I)
    • S(i);N_GUARD,S_CUTB(a),S_CUTR(c)::B(H),XP(f)
    • P(e);OGATE::B(H)
    • P(f);OGATE::R(F),XP(e)
  • Actual
    • B(A);
    • Threat
      • R1(D)
    • Vars
      • R(c);N_GUARD::S(I)
      • R(c);SBLOCK::R1(D)
      • B(a);P_PINR(D),S_CUTR(c)::S(I)
      • S(i);N_GUARD,S_CUTB(a),S_CUTR(c)::B(H),XP(f)
      • P(d);N_GUARD,S_CUTR(c)::S(G)
      • P(e);OGATE::B(H)
      • P(f);OGATE::R(F),XP(e)
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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).