MESON Chess Problem Database

Problem Display
PID: 270302 (2qn4/4N2p/R2pPk2/r1n2N2/3P4/8/3BQ2K/8 w - - 0 1)

Simoni, Francesco

Comm., Problemas, 1981

2qn4/4N2p/R2pPk2/r1n2N2/3P4/8/3BQ2K/8

#2

8 + 7

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qe5#
  • Tries
    • 1.Sd5+?
      • 1...Kg6
        • 2.Qg4#
      • 1...Kxf5!
    • 1.Sg8+?
      • 1...Kg6
        • 2.Qg4#
      • 1...Kxf5!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qh6#
      • 1...Kxe6
        • 2.Rxd6#
      • 1...Qxe6
        • 2.Bg5#
      • 1...Scxe6
        • 2.Sg8#
      • 1...Sdxe6
        • 2.Sd5#
      • 1...Sf7
        • 2.Qxf7#
      • 1...h6
        • 2.Qg6#
        • 2.Qxh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::QAB1(B)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(d);N_GUARD,P-FLIGHT::QAR2(B)
      • Refutation
        • K(d);P-FLIGHT,XS(E)
    • Try
      • S(H);CHECK
      • Vars
        • K(d);N_GUARD,P-FLIGHT::QAR2(B)
      • Refutation
        • K(d);P-FLIGHT,XS(E)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINP(c),XP(G)::R1(F),XP(c)
      • Q(f);SBLOCK,XP(G)::B(A)
      • S(b);SBLOCK,XP(G)::S(H)
      • S(g);SBLOCK,XP(G)::S(H)
      • S(g);N_GUARD::QAR1(B),XS(g)
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).