MESON Chess Problem Database

Problem Display
PID: 208199 (k1K4Q/p7/nBp5/8/8/8/8/8 w - - 0 1)

Huggins, Colonel AZ

Nordisk Skaktidende, 1875

k1K4Q/p7/nBp5/8/8/8/8/8

#2

3 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Kc7#
    • 1...Sc5
      • 2.Kc7#
    • 1...Sc7
      • 2.Kxc7#
    • 1...c5
      • 2.Qh1#
  • Tries
    • 1.Bg1?
      • 1...Sb4
        • 2.Kc7#
      • 1...Sc5
        • 2.Kc7#
      • 1...Sc7
        • 2.Kxc7#
      • 1...c5
        • 2.Qh1#
      • 1...Sb8!
    • 1.Bf2?
      • 1...Sb4
        • 2.Kc7#
      • 1...Sc5
        • 2.Kc7#
      • 1...Sc7
        • 2.Kxc7#
      • 1...c5
        • 2.Qh1#
      • 1...Sb8!
    • 1.Be3?
      • 1...Sb4
        • 2.Kc7#
      • 1...Sc5
        • 2.Kc7#
      • 1...Sc7
        • 2.Kxc7#
      • 1...c5
        • 2.Qh1#
      • 1...Sb8!
    • 1.Bd4?
      • 1...Sb4
        • 2.Kc7#
      • 1...Sc5
        • 2.Kc7#
      • 1...Sc7
        • 2.Kxc7#
      • 1...c5
        • 2.Qh1#
      • 1...Sb8!
    • 1.Ba5?
      • 1...Sb4
        • 2.Kc7#
      • 1...Sc5
        • 2.Kc7#
      • 1...Sc7
        • 2.Kxc7#
      • 1...c5
        • 2.Qh1#
      • 1...Sb8!
    • 1.Bc5?
      • 1...Sxc5
        • 2.Kc7#
      • 1...Sb4
        • 2.Kc7#
      • 1...Sc7
        • 2.Kxc7#
      • 1...Sb8!
    • 1.Qg7?
      • threat
        • 2.Qxa7#
        • 2.Qb7#
      • 1...axb6
        • 2.Qb7#
      • 1...Sc5
        • 2.Qxa7#
      • 1...Sc7!
    • 1.Qh7?
      • threat
        • 2.Qxa7#
        • 2.Qb7#
      • 1...axb6
        • 2.Qb7#
      • 1...Sc5
        • 2.Qxa7#
      • 1...Sc7!
  • Keys
    • 1.Qa1!
      • 1...axb6
        • 2.Qxa6#
      • 1...Sb8
        • 2.Qxa7#
      • 1...Sb4
        • 2.Qxa7#
      • 1...Sc5
        • 2.Qxa7#
      • 1...Sc7
        • 2.Qxa7#
      • 1...c5
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);::QAR(C)+K(B)
    • S(a);::QAR(C)+K(B),XS(a)
    • P(b);OGATEB::QAB(C)
  • Tries
    • Try
      • B(A);
      • Vars
        • S(a);::QAR(C)+K(B)
        • S(a);::QAR(C)+K(B),XS(a)
        • P(b);OGATEB::QAB(C)
      • Refutation
        • S(a);
    • Try
      • B(A);
      • Vars
        • S(a);::QAR(C)+K(B)
        • S(a);::QAR(C)+K(B),XS(a)
        • P(b);OGATEB::QAB(C)
      • Refutation
        • S(a);
    • Try
      • B(A);
      • Vars
        • S(a);::QAR(C)+K(B)
        • S(a);::QAR(C)+K(B),XS(a)
        • P(b);OGATEB::QAB(C)
      • Refutation
        • S(a);
    • Try
      • B(A);
      • Vars
        • S(a);::QAR(C)+K(B)
        • S(a);::QAR(C)+K(B),XS(a)
        • P(b);OGATEB::QAB(C)
      • Refutation
        • S(a);
    • Try
      • B(A);
      • Vars
        • S(a);::QAR(C)+K(B)
        • S(a);::QAR(C)+K(B),XS(a)
        • P(b);OGATEB::QAB(C)
      • Refutation
        • S(a);
    • Try
      • B(A);
      • Vars
        • S(a);XB(A)::QAR(C)+K(B)
        • S(a);::QAR(C)+K(B)
        • S(a);::QAR(C)+K(B),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XB(A)::QAB1(C)
        • S(a);::QAR1(C),XP(c)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XB(A)::QAB1(C)
        • S(a);::QAR1(C),XP(c)
      • Refutation
        • S(a);
  • Actual
    • Q(C);
    • Vars
      • P(c);OGATEB,P_SPINS(a),XB(A)::QAR2(C),XS(a)
      • S(a);OGATE,P_SPINP(c)::QAR1(C),XP(c)
      • P(b);OGATEB::QAB(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).