MESON Chess Problem Database

Problem Display
PID: 251704 (N3K3/2p5/np2Q3/pkP5/R2bP3/Rn1P4/N2p4/8 w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2021

N3K3/2p5/np2Q3/pkP5/R2bP3/Rn1P4/N2p4/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Qd5#
    • 1...Bxc5
      • 2.Sc3#
    • 1...Sxc5
      • 2.Sxc7#
    • 1...c6
      • 2.Qc4#
  • Tries
    • 1.Sc3+?
      • 1...Kxc5
        • 2.Rc4#
        • 2.Qd5#
      • 1...Bxc3!
    • 1.Sxc7+?
      • 1...Kxc5
        • 2.Rc4#
        • 2.Qd5#
      • 1...Sxc7+!
    • 1.Qd7+?
      • 1...Kxc5
        • 2.Rc4#
        • 2.Qd5#
      • 1...c6!
    • 1.c6?
      • threat
        • 2.Qc4#
      • 1...Kc5
        • 2.Qd5#
      • 1...Bc5
        • 2.Sc3#
      • 1...Sac5
        • 2.Sxc7#
      • 1...Sbc5!
  • Keys
    • 1.cxb6!
      • threat
        • 2.Qc4#
      • 1...Kc5
        • 2.Qd5#
      • 1...Bc5
        • 2.Sc3#
      • 1...Sbc5
        • 2.Rxa5#
      • 1...Sac5
        • 2.Sxc7#
      • 1...c5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(e);OGATEB,P-FLIGHT,XP(F)::QAR1(G)
    • B(c);N_GUARD,SBLOCK,XP(F)::S(A)
    • S(f);N_GUARD,SBLOCK,XP(F)::S(H),XP(h)
    • P(h);SBLOCK::QAB1(G)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • B(c);XS(A)
    • Try
      • S(H);CHECK,XP(h)
      • Refutation
        • S(f);CHECK,XS(H)
    • Try
      • Q(G);CHECK
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • P(F);
      • Threat
        • QAB1(G)
      • Vars
        • K(e);P-FLIGHT,S_CUTB(c),S_CUTS(b),S_CUTS(f)::QAR1(G)
        • B(c);N_GUARD,SBLOCK::S(A)
        • S(f);N_GUARD,SBLOCK::S(H),XP(h)
      • Refutation
        • S(b);
  • Actual
    • P(F);XP(g)
    • Threat
      • QAB1(G)
    • Vars
      • K(e);P-FLIGHT,S_CUTB(c),S_CUTP(h),S_CUTS(b),S_CUTS(f)::QAR1(G)
      • B(c);N_GUARD,SBLOCK::S(A)
      • S(b);N_GUARD,SBLOCK::R1(D),XP(d)
      • S(f);N_GUARD,SBLOCK::S(H),XP(h)
      • P(h);N_GUARD,SBLOCK::QAB(G)
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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).