MESON Chess Problem Database

Problem Display
PID: 110062 (3N4/5Q2/nrppp1p1/2bpP1p1/1P1kp1K1/8/5P2/1BR1N3 w - - 0 1)

Campo, Achille

Fanfulla da Lodi, 1886-1888

3N4/5Q2/nrppp1p1/2bpP1p1/1P1kp1K1/8/5P2/1BR1N3

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qg7#
    • 1...Rxb4
      • 2.Sxc6#
    • 1...Rb5
      • 2.Sxc6#
    • 1...Rb7
      • 2.Sxc6#
    • 1...Rb8
      • 2.Sxc6#
    • 1...e3
      • 2.Sf3#
    • 1...dxe5
      • 2.Sxe6#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Sf3#
        • 2.Sxe6#
      • 1...Sc7
        • 2.Sf3#
      • 1...gxf4!
  • Keys
    • 1.Qa7!
      • 1...Kxe5
        • 2.Qg7#
      • 1...Rxb4
        • 2.Sxc6#
      • 1...Bxb4
        • 2.Sxc6#
      • 1...Sxb4
        • 2.Qa1#
      • 1...dxe5
        • 2.Sxe6#
      • 1...Rb5
        • 2.Sxc6#
      • 1...Rb7
        • 2.Sxc6#
      • 1...Rb8
        • 2.Sxc6#
      • 1...Sc7
        • 2.Qa1#
      • 1...Sb8
        • 2.Qa1#
      • 1...e3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XP(G)::QAB(H)
    • R(g);N_GUARD,XP(E)::S(I),XP(h)
    • R(g);N_GUARD::S(I),XP(h)
    • P(b);N_GUARD::S(C)
    • P(i);SBLOCK,XP(G)::S(I),XP(j)
  • Tries
    • Try
      • Q(H);P_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::S(C)
      • Refutation
        • P(e);N_SPINP(b),XQ(H)
  • Actual
    • Q(H);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XP(G)::QAB(H)
      • R(g);N_GUARD,P_SPINB(c),XP(E)::S(I),XP(h)
      • B(c);P_SPINR(g),XP(E)::S(I),XP(h)
      • S(f);OGATE,XP(E)::QAB(H)
      • P(i);SBLOCK,XP(G)::S(I),XP(j)
      • R(g);N_GUARD,P_SPINB(c)::S(I),XP(h)
      • S(f);OGATE::QAB(H)
      • P(b);N_GUARD::S(C)
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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).