MESON Chess Problem Database

Problem Display
PID: 54372 (8/b2N1RK1/r5n1/4p3/r3k1P1/1Q2B2R/6b1/3n4 w - - 0 1)

Donati, Gianni

Comm., Phenix, 1999

8/b2N1RK1/r5n1/4p3/r3k1P1/1Q2B2R/6b1/3n4

#2

7 + 8

145 StrateGems 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Sf6#
    • 1...Rb6
      • 2.Sc5#
    • 1...Rf6
      • 2.Sxf6#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Bb6
      • 2.Sf6#
    • 1...Bb8
      • 2.Sc5#
  • Tries
    • 1.Qc4+?
      • 1...Bd4
        • 2.Sc5#
      • 1...Rxc4!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Qd3#
      • 1...Bxh3
        • 2.Qf3#
      • 1...Ra3
        • 2.Qc4#
      • 1...Rd4
        • 2.Sc5#
      • 1...Bf1
        • 2.Qf3#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Sb2
        • 2.Re3#
      • 1...Sf2
        • 2.Re3#
      • 1...Sc3
        • 2.Re3#
      • 1...Se3
        • 2.Rxe3#
      • 1...Sf4
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 6
  • Sets
    • R(f);N_GUARD::S(E)
    • R(f);S_CUTB(h)::S(E)
    • R(f);N_GUARD::S(E),XR(f)
    • B(h);N_GUARD::S(E),XB(h)
    • B(h);S_CUTR(f)::S(E)
    • B(h);N_GUARD::S(E)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(h);P_SPINB(h)::S(E)
      • Refutation
        • R(c);XQ(A)
  • Actual
    • B(B);
    • Threat
      • QAB1(A)
    • Vars
      • B(b);N_GUARD,XR(C)::QAB1(A)
      • R(c);N_GUARD::QAR2(A)
      • R(c);SBLOCK::S(E)
      • B(b);N_GUARD::QAB1(A)
      • B(b);N_GUARD::QAB1(A),XB(b)
      • S(a);N_GUARD::R1(C)
      • S(a);N_GUARD::R1(C),XS(a)
      • S(g);SBLOCK::S(E)
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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).