MESON Chess Problem Database

Problem Display
PID: 64251 (1rN3b1/2qn1n2/rp5R/N1PkB1Q1/2p1p2R/1P5B/8/1K6 w - - 0 1)

Stocchi, Ottavio

3rd Prize, Bergen Chess Club, 1952

1rN3b1/2qn1n2/rp5R/N1PkB1Q1/2p1p2R/1P5B/8/1K6

#2

10 + 10

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Be6#
    • 1...Sxc5
      • 2.bxc4#
    • 1...bxc5
      • 2.Se7#
  • Tries
    • 1.Qd2+?
      • 1...Kxe5
        • 2.Sxc4#
        • 2.Re6#
      • 1...Kxc5!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qxe4#
      • 1...Qxe5
        • 2.bxc4#
      • 1...Qxc5
        • 2.Qxe4#
      • 1...Sdxe5
        • 2.Be6#
      • 1...Sfxe5
        • 2.Se7#
      • 1...bxc5
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(f);SBLOCK,XP(F)::B(C)
    • S(g);SBLOCK,XP(F)::P(B),XP(a)
    • P(e);P_PINP(B),SBLOCK,XP(F)::S(J)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • K(c);P-FLIGHT,XP(F)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(b),XB(G)::QAR1(H),XP(b)
      • Q(f);SBLOCK,XB(G)::P(B),XP(a)
      • Q(f);SBLOCK,XP(F)::QAB1(H),XP(b)
      • S(g);SBLOCK,XB(G)::B(C)
      • S(h);SBLOCK,XB(G)::S(J)
      • P(e);P_PINP(B),SBLOCK,XP(F)::QAB1(H),XP(b)
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).