MESON Chess Problem Database

Problem Display
PID: 49591 (8/8/4N3/pR1P1R2/4k1P1/2Pnbn1r/6QB/K4B2 w - - 0 1)

Laib, Kurt Friedrich

Schach-Express, 1950

8/8/4N3/pR1P1R2/4k1P1/2Pnbn1r/6QB/K4B2

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh2
      • 2.Qxf3#
    • 1...Rh4
      • 2.Qxf3#
    • 1...Rh5
      • 2.Qxf3#
    • 1...Rh6
      • 2.Qxf3#
    • 1...Rh7
      • 2.Qxf3#
    • 1...Rh8
      • 2.Qxf3#
    • 1...Sc1
      • 2.Re5#
    • 1...Se1
      • 2.Re5#
    • 1...Sb2
      • 2.Re5#
    • 1...Sf2
      • 2.Re5#
    • 1...Sb4
      • 2.Re5#
    • 1...Sf4
      • 2.Sg5#
    • 1...Sc5
      • 2.Re5#
    • 1...Se5
      • 2.Rxe5#
  • Tries
    • 1.Sc5+?
      • 1...Sxc5
        • 2.Re5#
      • 1...Bxc5!
    • 1.Rb4+?
      • 1...Bd4
        • 2.Qe2#
      • 1...Sxb4
        • 2.Re5#
      • 1...axb4!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qxd3#
      • 1...Sc1
        • 2.Sc5#
      • 1...Sde1
        • 2.Sc5#
      • 1...Sb2
        • 2.Sc5#
      • 1...Sf2
        • 2.Sc5#
      • 1...Sb4
        • 2.Sc5#
      • 1...Sf4
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sde5
        • 2.Rf4#
      • 1...Sfe1
        • 2.Sg5#
      • 1...Sfe5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 8
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(d);N_GUARD,XB(D)::QAB1(C),XS(c)
    • R(d);N_GUARD::QAB1(C),XS(c)
    • S(a);N_GUARD::R1(I)
    • S(a);S_CUTB(b)::S(J)
    • S(a);N_GUARD::R1(I),XS(a)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • S(a);XS(J)::R1(I)
      • Refutation
        • B(b);XS(J)
    • Try
      • R(G);CHECK
      • Vars
        • B(b);P_PINP(E),P_SPINB(b),S_CUTP(f),S_CUTS(a)::QAR2(C)
        • S(a);XR(G)::R1(I)
      • Refutation
        • P(f);XR(G)
  • Actual
    • Q(C);N_PINS(c),P_PINB(b)
    • Threat
      • QAB1(C),XS(a)
    • Vars
      • S(a);N_GUARD::S(J)
      • S(a);N_GUARD::S(J),XS(a)
      • S(a);N_GUARD,SBLOCK::R1(I)
      • S(c);N_GUARD::S(J)
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).