MESON Chess Problem Database

Problem Display
PID: 9711 (2K1Q1b1/1pR3p1/3pP3/2Nk4/5RNp/p7/q2rP3/b4n2 w - - 0 1)

Blake, Percy Francis

Reading Observer, 1908

2K1Q1b1/1pR3p1/3pP3/2Nk4/5RNp/p7/q2rP3/b4n2

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe6+
      • 2.Qxe6#
    • 1...dxc5
      • 2.Qd7#
    • 1...b5
      • 2.Qc6#
    • 1...b6
      • 2.Qc6#
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxb7#
      • 1...Bxe6+
        • 2.Sd7#
      • 1...dxc5
        • 2.Qd7#
      • 1...Qb1
        • 2.Qc4#
      • 1...Qb3
        • 2.Qxb3#
      • 1...Qb2
        • 2.Qc4#
      • 1...Rb2
        • 2.Qd3#
      • 1...Rd4
        • 2.Rf5#
      • 1...Bd4
        • 2.e4#
      • 1...b6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(k);CHECK,OGATE,XP(E)::QAB1(H),XB(k)
    • P(h);OGATEB,XS(D)::QAR2(H)
    • P(i);N_GUARD::QAB1(H)
  • Actual
    • Q(H);
    • Threat
      • QAB(H),XP(i)
    • Vars
      • B(k);CHECK,SBLOCK,XP(E)::QAR(H)+S(D)
      • P(h);OGATEB,P_SPINP(h),XS(D)::QAR2(H)
      • Q(c);N_GUARD::QAB1(H)
      • Q(c);N_GUARD::QAB(H),XQ(c)
      • R(d);N_GUARD,S_CUTB(a)::QAR2(H)
      • R(d);SBLOCK,S_CUTB(a)::R(B)
      • B(a);SBLOCK::P(A)
      • P(i);N_GUARD::QAB1(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).