MESON Chess Problem Database

Problem Display
PID: 268127 (2nnr3/P1kP1P1R/1bP1b2R/p1Pp1p2/7B/8/4Q3/4K3 w - - 0 1)

Chicco, Adriano

La Settimana Enigmistica, 1932

2nnr3/P1kP1P1R/1bP1b2R/p1Pp1p2/7B/8/4Q3/4K3

#2

10 + 9

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd7
      • 2.fxe8S#
    • 1...Bxf7
      • 2.dxe8S#
  • Tries
    • 1.Qe5+?
      • 1...Sd6
        • 2.Qxd6#
      • 1...Kxc6!
    • 1.dxc8Q+?
      • 1...Bxc8
        • 2.fxe8S#
      • 1...Kxc8!
    • 1.dxc8R+?
      • 1...Bxc8
        • 2.fxe8S#
      • 1...Kxc8!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qxc8#
      • 1...Bxd7+
        • 2.fxe8S#
      • 1...Bxf7+
        • 2.dxe8S#
      • 1...Kxc6
        • 2.dxc8Q#
      • 1...Bxc5
        • 2.dxe8S#
        • 2.fxe8S#
      • 1...Sxa7
        • 2.Qxb6#
      • 1...Sxc6
        • 2.fxe8S#
      • 1...Sxf7
        • 2.Qb7#
      • 1...Sd6
        • 2.Qxb6#
      • 1...Se7
        • 2.Qxb6#
      • 1...Sb7
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(e);P_PINQ(B),XP(H)::PXR(i)=S
    • B(e);P_PINQ(B),XP(I)::PXR(i)=S
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAB1(B),XS(g)
      • Refutation
        • K(f);P-FLIGHT,P_SPINB(e),XP(E)
    • Try
      • P(H);CHECK,XS(g)
      • Vars
        • B(e);P_PINQ(B),SBLOCK,XQ(H)::PXR(i)=S
      • Refutation
        • K(f);P-FLIGHT,XQ(H)
    • Try
      • P(H);CHECK,XS(g)
      • Vars
        • B(e);P_PINQ(B),SBLOCK,XR(H)::PXR(i)=S
      • Refutation
        • K(f);P-FLIGHT,XR(H)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XS(g)
    • Vars
      • B(e);CHECK,XP(H)::PXR(i)=S
      • B(e);CHECK,XP(I)::PXR(i)=S
      • K(f);P-FLIGHT,P_SPINB(d),S_CUTB(e),XP(E)::PXS(g)=Q
      • S(g);N_GUARD,XP(G)::QAB1(B),XB(d)
      • S(h);SBLOCK,XP(E)::PXR(i)=S
      • S(h);N_GUARD,XP(I)::QAR1(B)
      • S(g);N_GUARD::QAB1(B),XB(d)
      • S(h);N_GUARD::QAR1(B),XS(h)
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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).