MESON Chess Problem Database

Problem Display
PID: 90101 (8/1p6/1B3N2/PkP5/R1R5/1P6/1Q2K3/8 w - - 0 1)

Selb, Hans

Die Schwalbe, 1960

8/1p6/1B3N2/PkP5/R1R5/1P6/1Q2K3/8

#2

9 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd5?
      • 1...Ka6
        • 2.Sc7#
      • 1...Kc6!
    • 1.Se8?
      • 1...Ka6
        • 2.Sc7#
      • 1...Kc6!
    • 1.Qd4?
      • 1...Kc6
        • 2.Qd7#
      • 1...Ka6!
    • 1.Qe5?
      • 1...Kc6
        • 2.Qe8#
      • 1...Ka6!
    • 1.Qd2?
      • 1...Kc6
        • 2.Qd7#
      • 1...Ka6!
  • Keys
    • 1.b4!
      • 1...Kxa4
        • 2.b5#
      • 1...Kxc4
        • 2.b5#
      • 1...Ka6
        • 2.b5#
      • 1...Kc6
        • 2.b5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);
      • Vars
        • K(a);S_FLIGHT::S(I)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(I);
      • Vars
        • K(a);S_FLIGHT::S(I)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(C);
    • Vars
      • K(a);OGATE,S_FLIGHT,XR(D)::R(E)+P(C)
      • K(a);OGATE,S_FLIGHT,XR(E)::R(D)+P(C)
      • K(a);OGATE,S_FLIGHT::P(C)
HTML5 logo

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).