MESON Chess Problem Database

Problem Display
PID: 9603 (6Q1/p7/2N3P1/1B2p3/4k1KR/r3q3/1b4pp/4RnBb w - - 0 1)

Heathcote, Godfrey

Reading Observer, 1906

6Q1/p7/2N3P1/1B2p3/4k1KR/r3q3/1b4pp/4RnBb

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qc4#
  • Tries
    • 1.Kh5+?
      • 1...Kf5
        • 2.Qf7#
      • 1...Kf3!
    • 1.Qf7?
      • threat
        • 2.Kh5#
        • 2.Qf3#
      • 1...Qe2+
        • 2.Kg5#
      • 1...hxg1S
        • 2.Kh5#
      • 1...Sd2
        • 2.Kh5#
      • 1...Sg3
        • 2.Kh3#
        • 2.Qf3#
      • 1...Qxe1!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Kh5#
      • 1...Qe2+
        • 2.Kg5#
      • 1...Kxd4
        • 2.Qc4#
      • 1...Qxe1
        • 2.Qa8#
      • 1...Bxd4
        • 2.Qa8#
      • 1...exd4
        • 2.Qe6#
      • 1...Sg3
        • 2.Kh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(c);N_GUARD::QAR2(H)
  • Tries
    • Try
      • K(C);CHECK,S_FLIGHT
      • Vars
        • K(h);N_SPINQ(g),S_FLIGHT::QAR2(H)
      • Refutation
        • K(h);N_SPINQ(g),S_FLIGHT
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);CHECK::R(D)+K(C)
        • P(e);XB(B)::R(D)+K(C)
        • S(a);::R(D)+K(C)
      • Refutation
        • Q(g);N_SPINQ(g),XR(A)
  • Actual
    • S(F);
    • Threat
      • R(D)+K(C)
    • Vars
      • Q(g);CHECK::R(D)+K(C)
      • K(h);OGATEB,P-FLIGHT,XS(F)::QAR1(H)
      • Q(g);N_SPINQ(g),XR(A)::QAB(H)
      • B(c);SBLOCK,XS(F)::QAB(H)
      • P(i);OGATEB,SBLOCK,XS(F)::QAR2(H)
      • S(a);::R(D)+K(C)
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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).