Problem Display
PID: 210245 (QB1b2BK/2PpPRP1/2NpkP2/2Pp2P1/2PP4/8/8/8 w - - 0 1)

Reddmann, Hauke

Deutsche Schachblatter, 1991

QB1b2BK/2PpPRP1/2NpkP2/2Pp2P1/2PP4/8/8/8

#2

14 + 5


15148 Sadier Collection 2020

SOLUTION


  • SOUND
  • Sets
    • 1...dxc6
      • 2.c8Q#
      • 2.c8B#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Qxd5#
      • 1...dxc4
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kf5!
    • 1.Sa5?
      • threat
        • 2.Qxd5#
      • 1...dxc4
        • 2.Qe4#
      • 1...Kf5!
    • 1.Sa7?
      • threat
        • 2.Qxd5#
      • 1...dxc4
        • 2.Qe4#
      • 1...Kf5!
  • Keys
    • 1.Bh7!
      • threat
        • 2.Sxd8#
        • 2.cxd8S#
        • 2.exd8S#
      • 1...Kxf7
        • 2.g8Q#
      • 1...Bxc7
        • 2.e8Q#
      • 1...Bxe7
        • 2.Rxe7#
      • 1...dxc4
        • 2.Sxd8#
      • 1...dxc5
        • 2.cxd8S#
      • 1...dxc6
        • 2.exd8S#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(d);XS(E)::P=Q
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(K),XP(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAB1(K),XP(a)
      • Vars
        • P(a);OGATE,XP(A)::QAR2(K)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAB1(K),XP(a)
      • Vars
        • P(a);OGATE,XP(A)::QAR2(K)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • B(M);
    • Threat
      • DUALS(3)
    • Vars
      • K(c);S_FLIGHT,XR(I)::P=Q
      • B(e);N_GUARD,XP(G)::P=Q
      • B(e);OGATE,XP(H)::R1(I),XB(e)
      • P(a);XP(A)::S(E),XB(e)
      • P(b);XP(C)::PXB(e)=S
      • P(d);XS(E)::PXB(e)=S


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).