MESON Chess Problem Database

Problem Display
PID: 245049 (3n3B/4N2B/1K2pP2/1pP2Q2/2PknrRb/1Pp1pb2/2q1r3/4N3 w - - 0 1)

Cristoffanini, Guido

Schackvarlden, 1929

3n3B/4N2B/1K2pP2/1pP2Q2/2PknrRb/1Pp1pb2/2q1r3/4N3

#2

11 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Sxc2#
    • 1...Sf2
      • 2.Sxf3#
    • 1...Sg3
      • 2.Sxf3#
    • 1...Sxc5
      • 2.Sxf3#
      • 2.Qxc5#
    • 1...Sd6
      • 2.Sxf3#
    • 1...Sxf6
      • 2.Sxf3#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sb7
      • 2.Sc6#
    • 1...Sf7
      • 2.Sc6#
  • Tries
    • 1.f7+?
      • 1...Sf6
        • 2.Sxf3#
      • 1...e5
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Bf6!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Qd5#
      • 1...Rxf6
        • 2.Sf5#
        • 2.Qd6#
      • 1...Sxc5
        • 2.Sxf3#
      • 1...Sxf6
        • 2.Sxf3#
      • 1...Sxe6
        • 2.Sc6#
      • 1...Rf5
        • 2.Sxf5#
      • 1...Sd2
        • 2.Sxc2#
      • 1...Sf2
        • 2.Sxf3#
      • 1...Sg3
        • 2.Sxf3#
      • 1...Sg5
        • 2.f7#
      • 1...Sd6
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(g);P_SPINR(h),S_CUTR(b)::S(A),XQ(a)
    • S(g);P_SPINR(h)::S(A),XB(e)
    • S(g);P_SPINR(h),P_SPINS(g),XP(H)::S(A),XB(e)
    • S(l);N_GUARD::S(I),XS(l)
    • S(l);N_GUARD::S(I)
  • Tries
    • Try
      • P(H);CHECK
      • Vars
        • S(g);P_SPINR(h),P_SPINS(g)::S(A),XB(e)
      • Refutation
        • B(i);P_SPINB(i)
  • Actual
    • Q(F);XP(k)
    • Threat
      • QAR1(F)
    • Vars
      • S(g);P_SPINR(h),XP(E)::S(A),XB(e)
      • S(g);P_SPINR(h),P_SPINS(g),XP(H)::S(A),XB(e)
      • S(l);N_GUARD,XQ(F)::S(I)
      • R(h);N_GUARD,P_SPINS(g)::S(I),XR(h)
      • S(g);P_SPINR(h),S_CUTR(b)::S(A),XQ(a)
      • S(g);P_SPINR(h)::S(A),XB(e)
      • S(g);N_GUARD,P_SPINR(h),S_CUTB(i)::B(K)+P(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).