MESON Chess Problem Database

Problem Display
PID: 185303 (b3N1k1/r1rpn2p/5Q1P/5N2/1b2p1q1/1R4Pp/B5nK/8 w - - 0 1)

Kraemer, Adolf Herrmann Rudolf Ferdinand

Basler Nachrichten, 1923

b3N1k1/r1rpn2p/5Q1P/5N2/1b2p1q1/1R4Pp/B5nK/8

#2

8 + 12

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qg7#
    • 1...Qe2
      • 2.Qg7#
    • 1...Qf3
      • 2.Qg7#
    • 1...Qxf5
      • 2.Qg7#
    • 1...Qh5
      • 2.Qg7#
    • 1...Qxg3+
      • 2.Rxg3#
    • 1...Qf4
      • 2.Qg7#
    • 1...Qh4
      • 2.Qg7#
    • 1...Qg7
      • 2.Qxg7#
    • 1...Rc5
      • 2.Sxe7#
    • 1...Be1
      • 2.Sxe7#
    • 1...Bd2
      • 2.Sxe7#
    • 1...Bc3
      • 2.Sxe7#
    • 1...Ba5
      • 2.Sxe7#
    • 1...Sg6
      • 2.Qg7#
  • Tries
    • 1.Rxb4+?
      • 1...Rxa2
        • 2.Sxe7#
      • 1...Rc4
        • 2.Sxe7#
      • 1...Bd5
        • 2.Sxe7#
      • 1...Sd5
        • 2.Se7#
      • 1...d5!
  • Keys
    • 1.Sed6!
      • threat
        • 2.Sxe7#
      • 1...Qxg3+
        • 2.Rxg3#
      • 1...Qxf5
        • 2.Qg7#
      • 1...Bxd6
        • 2.Rb8#
      • 1...Sxf5
        • 2.Qd8#
      • 1...Qg7
        • 2.Qxg7#
      • 1...Sd5
        • 2.Qd8#
      • 1...Sc6
        • 2.Ra3#
      • 1...Sg6
        • 2.Qg7#
      • 1...Sc8
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 11
  • Sets
    • Q(e);N_GUARD::QAR1(F)
    • Q(e);N_GUARD,XS(E)::QAR1(F)
    • Q(e);CHECK,OGATE,XP(D)::B(A)+R(C),DCHECK,XQ(e)
    • Q(e);N_GUARD,P_PINP(D)::QAR1(F)
    • Q(e);N_GUARD::QAR1(F),XQ(e)
    • R(g);S_CUTB(c)::S(E),XS(i)
    • B(c);N_GUARD::S(E),XS(i)
    • S(i);S_CUTQ(e)::QAR1(F)
  • Tries
    • Try
      • R(C);CHECK,XB(c)
      • Vars
        • R(f);XB(A)::S(E),XS(i)
        • R(g);P_SPINR(g)::S(E),XS(i)
        • B(k);P_SPINB(k)::S(E),XS(i)
        • S(i);P_SPINS(i)::S(E)
      • Refutation
        • P(h);P_SPINP(h)
  • Actual
    • S(H);
    • Threat
      • S(E),XS(i)
    • Vars
      • Q(e);CHECK,OGATE,XP(D)::B(A)+R(C),DCHECK,XQ(e)
      • Q(e);N_GUARD,XS(E)::QAR1(F)
      • B(c);OGATE,P_PINP(D),XS(H)::B(A)+R(C),DCHECK
      • S(i);OGATE,XS(E)::QAR(F)
      • Q(e);N_GUARD::QAR1(F),XQ(e)
      • S(i);OGATE::QAR(F)
      • S(i);N_GUARD,S_CUTB(k),S_CUTR(g)::B(A)+R(C)
      • S(i);S_CUTQ(e)::QAR1(F)
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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).