MESON Chess Problem Database

Problem Display
PID: 248114 (6B1/3K1N2/3N1p1n/3kpR2/1pRr2r1/3p4/5B2/8 w - - 0 1)

Jensch, Gerhard Wolfgang

Comm., White MT (A), 1952-1953

6B1/3K1N2/3N1p1n/3kpR2/1pRr2r1/3p4/5B2/8

#2

7 + 8

14867 BCPS Library 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rde4
      • 2.Rc5#
    • 1...Rdf4
      • 2.Rc5#
    • 1...Rge4
      • 2.Sxh6#
    • 1...Rgf4
      • 2.Sxh6#
    • 1...Rh4
      • 2.Sxh6#
    • 1...Sxf5
      • 2.Sg5#
    • 1...Sxf7
      • 2.Bxf7#
  • Tries
    • 1.Sxe5+?
      • 1...Sf7
        • 2.Sxd3#
        • 2.Sf3#
        • 2.Sxg4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sexf7#
        • 2.Bxf7#
      • 1...Sxg8
        • 2.Sxd3#
        • 2.Sf3#
        • 2.Sxg4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sef7#
      • 1...Rxg8!
    • 1.Sg5+?
      • 1...Sf7
        • 2.Bxf7#
      • 1...Sxg8!
  • Keys
    • 1.Se4!
      • threat
        • 2.Rxd4#
      • 1...Kxc4+
        • 2.Sfd6#
      • 1...Kxe4+
        • 2.Sd6#
      • 1...Rxc4
        • 2.Sxf6#
      • 1...Rdxe4
        • 2.Rc5#
      • 1...Rgxe4
        • 2.Sxh6#
      • 1...Sxf5
        • 2.Sfg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(c);::R1(B)
    • R(d);N_GUARD::B(G)+S(F),XS(h)
    • S(h);N_GUARD,N_SPINP(f),XR(C)::B(G)+S(F)
    • S(h);OGATE,P_SPINS(h),XS(F)::B(G),XS(h)
  • Tries
    • Try
      • S(F);CHECK,XP(f)
      • Refutation
        • R(d);XB(G)
    • Try
      • S(F);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::B(G),XS(h)
      • Refutation
        • S(h);XB(G)
  • Actual
    • S(D);
    • Threat
      • R1(B),XR(c)
    • Vars
      • K(e);CHECK,N_SPINP(f),S_FLIGHT,XR(B)::B(G)+S(F),DCHECK
      • K(e);CHECK,N_SPINP(f),P_SPINR(c),S_FLIGHT,XS(D)::S(F)
      • R(c);SBLOCK,XR(B)::S(D),XP(g)
      • R(c);SBLOCK,XS(D)::R1(B)
      • R(d);N_GUARD,SBLOCK,XS(D)::B(G)+S(F),XS(h)
      • S(h);N_GUARD,N_SPINP(f),XR(C)::B(G)+S(F)
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).