MESON Chess Problem Database

Problem Display
PID: 203599 (K1N5/1pp2n2/2k1P3/R7/1Pr1P1p1/2Bp4/6B1/7q w - - 0 1)

Nitzsche, Bernhard

Arbeiter Schachzeitung, 1924

K1N5/1pp2n2/2k1P3/R7/1Pr1P1p1/2Bp4/6B1/7q

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rc5#
    • 1...Rxe4
      • 2.Rc5#
    • 1...Rc5
      • 2.Rxc5#
    • 1...b5
      • 2.Ra6#
  • Tries
    • 1.e5+?
      • 1...Re4
        • 2.Rc5#
      • 1...Qxg2!
  • Keys
    • 1.Bd4!
      • threat
        • 2.b5#
      • 1...Rxb4
        • 2.Rc5#
      • 1...Rxd4
        • 2.Rc5#
      • 1...Qb1
        • 2.e5#
      • 1...Qh5
        • 2.e5#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Sd6
        • 2.Sa7#
        • 2.Se7#
      • 1...b5
        • 2.Ra6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::R1(E)
    • R(c);N_GUARD,P_SPINR(c),XP(D)::R1(E)
    • R(c);N_GUARD::R1(E),XR(c)
    • P(f);N_GUARD,SBLOCK::R(E)
  • Tries
    • Try
      • P(D);CHECK
      • Vars
        • R(c);P_SPINR(c)::R1(E)
      • Refutation
        • Q(a);XB(A)
  • Actual
    • B(B);
    • Threat
      • P(C)
    • Vars
      • R(c);N_GUARD,XP(C)::R1(E)
      • R(c);N_GUARD,XB(B)::R1(E)
      • Q(a);N_GUARD::B(A)+P(D)
      • R(c);N_GUARD::R1(E),XR(c)
      • P(f);N_GUARD,SBLOCK::R(E)
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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).