MESON Chess Problem Database

Problem Display
PID: 196314 (8/7p/5B1P/3pbP1K/Np1kb2Q/1P1P1R1P/3P3p/n2nN2B w - - 0 1)

Bottger, FBH

Haagsche Courant, 1916

8/7p/5B1P/3pbP1K/Np1kb2Q/1P1P1R1P/3P3p/n2nN2B

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf6
      • 2.Qxf6#
    • 1...Sc2
      • 2.Sxc2#
    • 1...Sxb3
      • 2.Sc2#
    • 1...Sb2
      • 2.Qf2#
    • 1...Sf2
      • 2.Qxf2#
    • 1...Sc3
      • 2.Qf2#
    • 1...Se3
      • 2.dxe3#
  • Tries
    • 1.Kg5?
      • 1...Sxb3
        • 2.Sc2#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sb2
        • 2.Qf2#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sc3
        • 2.Qf2#
      • 1...Se3
        • 2.dxe3#
      • 1...Bxf6+!
    • 1.Bg7?
      • 1...Sxb3
        • 2.Sc2#
      • 1...Bf6
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sb2
        • 2.Qf2#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sc3
        • 2.Qf2#
      • 1...Se3
        • 2.dxe3#
      • 1...Bxg7!
    • 1.Bh8?
      • 1...Sxb3
        • 2.Sc2#
      • 1...Bf6
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Bg7
        • 2.Bxg7#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sb2
        • 2.Qf2#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sc3
        • 2.Qf2#
      • 1...Se3
        • 2.dxe3#
      • 1...Bxh8!
    • 1.Qf2+?
      • 1...Se3
        • 2.Qxe3#
        • 2.dxe3#
      • 1...Sxf2!
  • Keys
    • 1.Kg4!
      • 1...Bxf3+
        • 2.Kxf3#
      • 1...Bxf5+
        • 2.Kxf5#
      • 1...Sf2+
        • 2.Qxf2#
      • 1...Se3+
        • 2.dxe3#
      • 1...Bxd3
        • 2.Rxd3#
      • 1...Bxf6
        • 2.Qxf6#
      • 1...Sxb3
        • 2.Sc2#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sb2
        • 2.Qf2#
      • 1...Sc3
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(h);OGATE,XB(L)::QAB(I),XB(h)
    • S(a);N_GUARD::S(A),XS(a)
    • S(a);N_GUARD,XP(D)::S(A)
    • S(b);N_GUARD::QAB(I)
    • S(b);N_GUARD::QAB(I),XS(b)
    • S(b);OGATE::P(C),XS(b)
  • Tries
    • Try
      • K(K);P-FLIGHT
      • Vars
        • S(a);N_GUARD,XP(D)::S(A)
        • S(a);N_GUARD::S(A),XS(a)
        • S(b);N_GUARD::QAB(I)
        • S(b);N_GUARD::QAB(I),XS(b)
        • S(b);OGATE::P(C),XS(b)
      • Refutation
        • B(h);CHECK,XB(L)
    • Try
      • B(L);
      • Vars
        • S(a);N_GUARD,XP(D)::S(A)
        • S(a);N_GUARD::S(A),XS(a)
        • S(b);N_GUARD::QAB(I)
        • S(b);N_GUARD::QAB(I),XS(b)
        • S(b);OGATE::P(C),XS(b)
      • Refutation
        • B(h);XB(L)
    • Try
      • B(L);
      • Vars
        • S(a);N_GUARD,XP(D)::S(A)
        • B(h);OGATEB::B(L),XB(h)
        • S(a);N_GUARD::S(A),XS(a)
        • S(b);N_GUARD::QAB(I)
        • S(b);N_GUARD::QAB(I),XS(b)
        • S(b);OGATE::P(C),XS(b)
      • Refutation
        • B(h);XB(L)
    • Try
      • Q(I);CHECK,N_PINB(f),P_PINB(h)
      • Refutation
        • S(b);XQ(I)
  • Actual
    • K(K);N_PINB(f),P_PINB(h),S_FLIGHT
    • Vars
      • B(f);CHECK,XR(F)::QAR(I)+K(K),XB(f)
      • B(f);CHECK,XP(J)::QAR(I)+K(K),XB(f)
      • S(b);CHECK,N_GUARD::QAB(I),XS(b)
      • S(b);CHECK,OGATE::P(C),XS(b)
      • B(f);OGATE,XP(E)::R1(F),XB(f)
      • B(h);N_SPINB(h),OGATE,XB(L)::QAB(I),XB(h)
      • S(a);N_GUARD,XP(D)::S(A)
      • S(a);N_GUARD::S(A),XS(a)
      • S(b);N_GUARD::QAB(I)
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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).