MESON Chess Problem Database

Problem Display
PID: 159902 (5K2/Bp1p3B/1r2p2n/2N3R1/3k4/b3NR2/2Q1b2r/q4n2 w - - 0 1)

Anonymous

BCPJ (August), 1919

5K2/Bp1p3B/1r2p2n/2N3R1/3k4/b3NR2/2Q1b2r/q4n2

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Qe4#
    • 1...Rb4
      • 2.Sb3#
      • 2.Sxe6#
    • 1...Rd6
      • 2.Sb3#
      • 2.Sxe6#
    • 1...Bd1
      • 2.Qd3#
      • 2.Qc4#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Bxf3
      • 2.Qd3#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bc1
      • 2.Sb3#
    • 1...Bb2
      • 2.Sb3#
    • 1...Bxc5+
      • 2.Qxc5#
    • 1...Sxe3
      • 2.Rf4#
    • 1...d6
      • 2.Sb3#
      • 2.Sxe6#
  • Tries
    • 1.Qd2+?
      • 1...Bd3
        • 2.Rf4#
        • 2.Qxd3#
      • 1...Sxd2!
  • Keys
    • 1.Bb8!
      • threat
        • 2.Be5#
      • 1...Bxc5+
        • 2.Qxc5#
      • 1...Bxf3
        • 2.Qd3#
      • 1...Sxe3
        • 2.Rf4#
      • 1...Qc3
        • 2.Qe4#
      • 1...Rd6
        • 2.Sb3#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Sg4
        • 2.Rxg4#
      • 1...Sf5
        • 2.Rg4#
      • 1...Sf7
        • 2.Rg4#
      • 1...e5
        • 2.Bxe5#
      • 1...d6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(a);SBLOCK::QAR1(A)
    • B(c);N_GUARD::QAR1(A),XB(c)
    • B(c);N_GUARD,XR(C)::QAR1(A)
    • B(e);N_PINS(D)::S(D)
    • B(e);CHECK,OGATE,XS(D)::QAB1(A),XB(e)
    • S(b);SBLOCK,XS(B)::R(C)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • S(b);XQ(A)
  • Actual
    • B(F);
    • Threat
      • B(F)
    • Vars
      • B(e);CHECK,OGATE,XS(D)::QAB1(A),XB(e)
      • B(c);N_GUARD,XR(C)::QAR1(A)
      • S(b);SBLOCK,XS(B)::R(C)
      • Q(a);SBLOCK::QAR1(A)
      • R(g);N_PINS(D)::S(D)
      • B(c);N_GUARD::QAR1(A),XB(c)
      • S(i);N_GUARD::R(E),XS(i)
      • S(i);N_GUARD::R(E)
      • P(h);::B(F),XP(h)
      • P(k);N_PINS(D)::S(D),XP(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).