MESON Chess Problem Database

Problem Display
PID: 245847 (b4B1R/2PPNk2/2n2pp1/7N/B3R2b/8/8/2n4K w - - 0 1)

Bakcsi, Gyorgy

Europa-Rochade, 1991

b4B1R/2PPNk2/2n2pp1/7N/B3R2b/8/8/2n4K

#2

9 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Bb3#
    • 1...Se2
      • 2.Bb3#
    • 1...Sb3
      • 2.Bxb3#
    • 1...Sd3
      • 2.Bb3#
    • 1...Sb4
      • 2.d8S#
    • 1...Sd4
      • 2.d8S#
    • 1...Sa5
      • 2.d8S#
    • 1...Se5
      • 2.d8S#
    • 1...Sa7
      • 2.d8S#
    • 1...Sxe7
      • 2.d8S#
    • 1...Sb8
      • 2.d8S#
    • 1...Sd8
      • 2.cxd8S#
  • Tries
    • 1.Bh6?
      • threat
        • 2.Rh7#
        • 2.Rf8#
      • 1...Sxe7
        • 2.Rf8#
        • 2.d8S#
      • 1...Se5!
    • 1.c8Q?
      • threat
        • 2.Rh7#
        • 2.Qe8#
      • 1...Sxe7
        • 2.Qe8#
        • 2.d8S#
      • 1...Se5
        • 2.d8S#
      • 1...Sd8!
    • 1.c8S?
      • threat
        • 2.Sd6#
      • 1...Se5
        • 2.d8S#
      • 1...Bg3!
    • 1.c8R?
      • threat
        • 2.Rh7#
      • 1...Sxe7
        • 2.d8S#
      • 1...Se5
        • 2.d8S#
      • 1...Sd8!
    • 1.d8Q?
      • threat
        • 2.Rh7#
      • 1...Sxe7
        • 2.Be8#
        • 2.Qxe7#
        • 2.Qe8#
      • 1...Sxd8
        • 2.cxd8S#
      • 1...Se5!
    • 1.d8S+?
      • 1...Sxd8
        • 2.cxd8S#
      • 1...Ke8!
    • 1.d8R?
      • threat
        • 2.Rh7#
      • 1...Sxe7
        • 2.Be8#
      • 1...Sxd8
        • 2.cxd8S#
      • 1...Se5!
  • Keys
    • 1.Bb5!
      • threat
        • 2.Bc4#
      • 1...Sxe7
        • 2.d8S#
      • 1...Se5
        • 2.d8S#
      • 1...Sb4
        • 2.d8S#
      • 1...Sd4
        • 2.d8S#
      • 1...Sa5
        • 2.d8S#
      • 1...Sa7
        • 2.d8S#
      • 1...Sb8
        • 2.d8S#
      • 1...Sd8
        • 2.cxd8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::B(B)
    • S(a);N_GUARD::B(B),XS(a)
    • S(c);N_GUARD,P_PINR(C)::P=S
    • S(c);N_GUARD,P_PINR(C),XS(G)::P=S
    • S(c);OGATE,P_PINR(C)::PXS(c)=S
  • Tries
    • Try
      • B(H);
      • Threat
        • DUALS(2)
      • Refutation
        • S(c);P_PINR(C)
    • Try
      • P(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);N_GUARD,P_PINR(C)::P=S
      • Refutation
        • S(c);P_PINR(C)
    • Try
      • P(E);
      • Threat
        • S(E)
      • Vars
        • S(c);N_GUARD,P_PINR(C)::P=S
      • Refutation
        • B(b);
    • Try
      • P(E);
      • Threat
        • R(I)
      • Vars
        • S(c);N_GUARD,P_PINR(C),XS(G)::P=S
        • S(c);N_GUARD,P_PINR(C)::P=S
      • Refutation
        • S(c);P_PINR(C)
    • Try
      • P(F);
      • Threat
        • R(I)
      • Vars
        • S(c);OGATE,P_PINR(C),XQ(F)::PXS(c)=S
      • Refutation
        • S(c);P_PINR(C)
    • Try
      • P(F);CHECK
      • Vars
        • S(c);OGATE,P_PINR(C),XS(F)::PXS(c)=S
      • Refutation
        • K(f);P_SPINS(c),S_FLIGHT
    • Try
      • P(F);
      • Threat
        • R(I)
      • Vars
        • S(c);OGATE,P_PINR(C),XS(G)::B(B)
        • S(c);OGATE,P_PINR(C),XR(F)::PXS(c)=S
      • Refutation
        • S(c);P_PINR(C)
  • Actual
    • B(B);
    • Threat
      • B(B)
    • Vars
      • S(c);N_GUARD,P_PINR(C),XS(G)::P=S
      • S(c);N_GUARD,P_PINR(C)::P=S
      • S(c);OGATE,P_PINR(C)::PXS(c)=S
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).