MESON Chess Problem Database

Problem Display
PID: 10604 (2Q5/p1N1nN1b/p2P4/P7/P2k2r1/KB1p1R2/3p4/8 w - - 0 1)

Piatesi, Antonio

3rd Comm., Freie Presse, 1966

2Q5/p1N1nN1b/p2P4/P7/P2k2r1/KB1p1R2/3p4/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Sb5#
    • 1...Ke4
      • 2.Qxg4#
    • 1...Kc5
      • 2.Se6#
    • 1...Be4
      • 2.Se6#
  • Tries
    • 1.Sb5+?
      • 1...Ke4
        • 2.Qxg4#
      • 1...axb5!
    • 1.Qxg4+?
      • 1...Kc3
        • 2.Qb4#
        • 2.Qc4#
        • 2.Qg7#
      • 1...Kc5
        • 2.Qc4#
      • 1...Be4!
  • Keys
    • 1.Qxa6!
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Sb5#
      • 1...Ke4
        • 2.Qxd3#
      • 1...Kc5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(c);P_SPINP(b),S_FLIGHT::QAR(I)+S(G),DCHECK
    • K(c);P-FLIGHT::QAR2(I),XR(d)
    • K(c);S_FLIGHT::QAR(I)+S(G),DCHECK
    • B(h);SBLOCK::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(I),XR(d)
      • Refutation
        • P(e);XS(G)
    • Try
      • Q(I);CHECK,XR(d)
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(I)
      • Refutation
        • B(h);P_SPINB(h)
  • Actual
    • Q(I);XP(e)
    • Threat
      • QAR1(I)
    • Vars
      • K(c);P_SPINP(b),S_FLIGHT::S(G)
      • K(c);P-FLIGHT::QAB1(I),XP(b)
      • K(c);S_FLIGHT::S(G)
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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).