MESON Chess Problem Database

Problem Display
PID: 66998 (8/3p3N/1ppP1p1n/r3k2K/2R1P1Qp/1B6/1N1R2Pq/2B5 w - - 0 1)

Stocchi, Ottavio

L'Italia Scacchistica, 1953

8/3p3N/1ppP1p1n/r3k2K/2R1P1Qp/1B6/1N1R2Pq/2B5

#2

11 + 9

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sf7
      • 2.Qf5#
    • 1...Sg8
      • 2.Qf5#
    • 1...b5
      • 2.Rc5#
    • 1...c5
      • 2.Rd5#
  • Tries
    • 1.Rc5+?
      • 1...bxc5
        • 2.Sc4#
      • 1...Rxc5!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qxf6#
      • 1...Kf4+
        • 2.Rd5#
      • 1...Ke6+
        • 2.Rc5#
      • 1...Qf4
        • 2.Qe8#
      • 1...Sg4
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sg8
        • 2.Qf5#
      • 1...f5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • S(h);N_GUARD::QAR1(H),XS(h)
    • S(h);N_GUARD::QAR1(H)
    • P(e);N_GUARD,S_CUTR(c)::R(F)
    • P(f);N_GUARD,S_CUTR(c)::R1(C)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • P(e);XR(F)::S(B)
      • Refutation
        • R(c);XR(F)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H),XP(g)
    • Vars
      • K(d);CHECK,S_FLIGHT::B(A)+R(C)
      • K(d);CHECK,P-FLIGHT,P_SPINP(g)::B(E)+R(F)
      • Q(a);SBLOCK::QAR(H)
      • S(h);N_GUARD::QAR1(H)
      • S(h);N_GUARD::QAR1(H),XS(h)
      • P(g);::S(B)
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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).