MESON Chess Problem Database

Problem Display
PID: 269180 (5N1K/1r3R1p/2Bp2p1/rRnnk1P1/4p2q/1N2b1P1/8/5Q2 w - - 0 1)

Chicco, Adriano

3rd HM., Szachy, 1951

5N1K/1r3R1p/2Bp2p1/rRnnk1P1/4p2q/1N2b1P1/8/5Q2

#2

9 + 11

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb3
      • 2.Qf6#
    • 1...Sd3
      • 2.Qf6#
    • 1...Sa4
      • 2.Qf6#
    • 1...Sa6
      • 2.Qf6#
    • 1...Se6
      • 2.Qf6#
    • 1...Sd7
      • 2.Re7#
    • 1...Sc3
      • 2.Qf6#
    • 1...Sb4
      • 2.Qf6#
    • 1...Sb6
      • 2.Qf6#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sc7
      • 2.Qf6#
    • 1...Se7
      • 2.Qf6#
  • Tries
    • 1.Sxg6+?
      • 1...Ke6
        • 2.Qf5#
      • 1...hxg6+!
    • 1.Re7+?
      • 1...Se6
        • 2.Rxe6#
        • 2.Qf6#
      • 1...Sxe7
        • 2.Qf6#
      • 1...Rxe7!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qxd5#
      • 1...Sf6
        • 2.Qe6#
      • 1...Sc3
        • 2.Qe6#
      • 1...Sb4
        • 2.Qe6#
      • 1...Sf4
        • 2.Qxe4#
      • 1...Sb6
        • 2.Qe6#
      • 1...Sc7
        • 2.Sd7#
      • 1...Se7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • S(e);P_SPINS(f),XS(B)::QAB1(A)
    • S(e);P_SPINS(f)::QAB1(A)
    • S(e);N_GUARD,P_SPINS(f),S_CUTR(j)::R(G)
    • S(f);N_GUARD,P_SPINS(e)::QAB1(A)
    • S(f);N_GUARD,P_SPINS(e)::QAB1(A),XS(f)
  • Tries
    • Try
      • S(H);CHECK,XP(i)
      • Vars
        • K(g);P-FLIGHT::QAB1(A)
      • Refutation
        • P(k);CHECK,XS(H)
    • Try
      • R(G);CHECK
      • Vars
        • S(f);P_SPINS(e),XR(G)::QAB1(A)
      • Refutation
        • R(j);XR(G)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XS(f)
    • Vars
      • S(f);OGATE,P_SPINS(e)::QAR1(A)
      • S(f);P_SPINS(e),S_CUTQ(c)::QAR1(A),XP(b)
      • S(f);P_SPINS(e),S_CUTR(j)::S(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).