MESON Chess Problem Database

Problem Display
PID: 17443 (4k3/2R1n3/2n1B3/8/Q7/B7/8/4K3 w - - 0 1)

Giobel, Bengt Rudolf

Stockholms Tidningen, 1946

4k3/2R1n3/2n1B3/8/Q7/B7/8/4K3

#2

5 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Rc8#
    • 1...Sf5
      • 2.Rc8#
    • 1...Sg6
      • 2.Rc8#
    • 1...Sc8
      • 2.Rxc8#
    • 1...Sg8
      • 2.Rc8#
  • Tries
    • 1.Rxe7+?
      • 1...Kf8
        • 2.Qf4#
      • 1...Kd8!
  • Keys
    • 1.Qh4!
      • 1...Kd8
        • 2.Rc8#
      • 1...Kf8
        • 2.Qh8#
      • 1...Sb4
        • 2.Qxe7#
      • 1...Sd4
        • 2.Qxe7#
      • 1...Sa5
        • 2.Qxe7#
      • 1...Se5
        • 2.Qxe7#
      • 1...Sa7
        • 2.Qxe7#
      • 1...Sb8
        • 2.Qxe7#
      • 1...Sd8
        • 2.Qxe7#
      • 1...Sd5
        • 2.Bf7#
        • 2.Qh8#
      • 1...Sf5
        • 2.Bf7#
        • 2.Qh8#
      • 1...Sg6
        • 2.Bf7#
      • 1...Sc8
        • 2.Bf7#
        • 2.Qh8#
      • 1...Sg8
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 9
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::R(E)
    • S(b);N_GUARD::R(E),XS(b)
  • Tries
    • Try
      • R(E);CHECK,XS(b)
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT::QAR(C)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
  • Actual
    • Q(C);N_PINS(a)
    • Vars
      • K(c);P-FLIGHT,P_SPINS(b)::R1(E)
      • K(c);P-FLIGHT,P_SPINS(b)::QAR2(C)
      • S(a);N_GUARD::QAR1(C),XS(b)
      • S(b);::B(D)
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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).