MESON Chess Problem Database

Problem Display
PID: 212827 (8/4nNb1/8/2Rp3Q/3kN3/4p3/4K3/5B2 w - - 0 1)

Niesslbeck, Karl

Schach-Echo, 1961

8/4nNb1/8/2Rp3Q/3kN3/4p3/4K3/5B2

#2

6 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qg4#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bh6
      • 2.Qe5#
    • 1...Bf8
      • 2.Qe5#
    • 1...Sc6
      • 2.Qxd5#
    • 1...Sg6
      • 2.Qxd5#
    • 1...Sc8
      • 2.Qxd5#
    • 1...Sg8
      • 2.Qxd5#
  • Tries
    • 1.Ra5?
      • threat
        • 2.Ra4#
      • 1...Kxe4
        • 2.Qg4#
      • 1...dxe4
        • 2.Qc5#
      • 1...Sc6
        • 2.Qxd5#
      • 1...Kc4!
    • 1.Qg5?
      • threat
        • 2.Qxe3#
      • 1...Kxe4
        • 2.Qg4#
      • 1...Bh6
        • 2.Qe5#
      • 1...Sf5!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Rb4#
      • 1...Kc4
        • 2.Kxe3#
      • 1...Kxe4
        • 2.Qg4#
      • 1...dxe4
        • 2.Qc5#
      • 1...Sc6
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(E)
    • B(e);N_GUARD::QAB1(E),XB(e)
    • B(e);N_GUARD::QAB1(E)
    • S(d);N_GUARD::QAR1(E),XP(c)
  • Tries
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(E)
        • P(c);OGATE,SBLOCK,XS(C)::QAB1(E)
        • S(d);N_GUARD::QAR1(E),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E),XP(a)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(E)
        • B(e);N_GUARD::QAB1(E)
      • Refutation
        • S(d);
  • Actual
    • R(D);
    • Threat
      • R(D)
    • Vars
      • K(b);P-FLIGHT::B(A)+K(B),XP(a)
      • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(E)
      • P(c);OGATE,SBLOCK,XS(C)::QAB1(E)
      • S(d);N_GUARD::QAR1(E),XP(c)
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).