MESON Chess Problem Database

Problem Display
PID: 60882 (4N3/8/bQpNp2R/Rn1k2K1/3p1P2/P4p2/qpP5/8 w - - 0 1)

Stocchi, Ottavio

1st Prize=, BCCA, 1950

4N3/8/bQpNp2R/Rn1k2K1/3p1P2/P4p2/qpP5/8

#2

9 + 9

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Sf6#
    • 1...e5
      • 2.Sc7#
  • Tries
    • 1.Rxb5+?
      • 1...cxb5
        • 2.Sf6#
        • 2.Sc7#
      • 1...c5
        • 2.Sf6#
        • 2.Sc7#
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Bxb5!
    • 1.Rxe6?
      • threat
        • 2.Sc7#
        • 2.Re5#
      • 1...c5
        • 2.Re5#
      • 1...Kxe6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qxd4#
      • 1...Kc4
        • 2.Qxc6#
      • 1...Ke4
        • 2.Sf6#
      • 1...exf5
        • 2.Qxc6#
      • 1...Qc4
        • 2.Sf6#
      • 1...d3
        • 2.Qd4#
      • 1...c5
        • 2.Qxe6#
      • 1...e5
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(h);N_SPINS(e)::S(I)
    • P(i);::S(I)
  • Tries
    • Try
      • R(D);CHECK,XS(e)
      • Refutation
        • B(g);XR(D)
    • Try
      • R(H);XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);N_SPINS(e)::R1(H)
      • Refutation
        • K(f);N_SPINS(e),S_FLIGHT,XR(H)
  • Actual
    • S(G);
    • Threat
      • QAR1(F),XP(d)
    • Vars
      • K(f);N_SPINS(e),S_FLIGHT::QAR2(F),XP(h)
      • K(f);N_SPINS(e),S_FLIGHT::S(I)
      • P(i);XS(G)::QAB1(F),XP(h)
      • Q(a);SBLOCK::S(I)
      • P(d);::QAR1(F)
      • P(h);N_SPINS(e),OGATE,SBLOCK::QAB1(F),XP(i)
      • P(i);::QAB1(F),XP(h)
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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).