MESON Chess Problem Database

Problem Display
PID: 17955 (4B3/7p/4N2p/K3p1nr/1R2p1kN/2Q2p2/5P2/6nR w - - 0 1)

Stocchi, Ottavio

1st Prize, La Scacchiera, 1952

4B3/7p/4N2p/K3p1nr/1R2p1kN/2Q2p2/5P2/6nR

#2

8 + 9

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1956
3105 FIDE Album (1945-1955) 1964
3174 The Two-move Chess Problem Tradition and Development 1966
5407 Selected Stocchi (II) 2004
133 The Problemist Supplement 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Sf7
      • 2.Rxe4#
  • Tries
    • 1.Qxf3+?
      • 1...S5xf3
        • 2.Rxe4#
      • 1...S1xf3!
  • Keys
    • 1.Qxe5!
      • threat
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qf5#
      • 1...Rxh4
        • 2.Qf4#
      • 1...Sxe6
        • 2.Bxh5#
      • 1...S1h3
        • 2.Qg3#
      • 1...S5h3
        • 2.Qxh5#
      • 1...Se2
        • 2.Qf5#
      • 1...Sf7
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::R(D),XP(c)
  • Tries
    • Try
      • Q(C);CHECK,XP(b)
      • Vars
        • S(f);XQ(C)::R(D),XP(c)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);XP(e)
    • Threat
      • DUALS(3)
    • Vars
      • R(g);XS(E)::QAR1(C)
      • S(f);P_PINQ(C),XS(G)::B(H),XR(g)
      • S(a);::QAR1(C)
      • S(f);OGATE,P_PINQ(C)::QAB1(C),XR(g)
      • S(a);::QAB1(C)
      • S(f);N_GUARD,P_PINQ(C)::R(D),XP(c)
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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).