MESON Chess Problem Database

Problem Display
PID: 193927 (n1N1K3/1p4Rp/2k3nr/Q7/1P6/2rp4/8/6bb w - - 0 1)

Hansen, Lorenz

Pittsburgh Gazette-Times, 1916

n1N1K3/1p4Rp/2k3nr/Q7/1P6/2rp4/8/6bb

#2

5 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sc7+
      • 2.Rxc7#
    • 1...b5
      • 2.Qxa8#
  • Tries
    • 1.Qa4+?
      • 1...b5
        • 2.Qxa8#
      • 1...Kd5!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Rd6#
      • 1...Sc7+
        • 2.Rxc7#
      • 1...Bh2
        • 2.Sa7#
      • 1...Bc5
        • 2.b5#
      • 1...Bb6
        • 2.Qa4#
      • 1...Sf4
        • 2.Se7#
      • 1...Sh4
        • 2.Se7#
      • 1...Se5
        • 2.Se7#
      • 1...Se7
        • 2.Sxe7#
      • 1...Sf8
        • 2.Se7#
      • 1...Sh8
        • 2.Se7#
      • 1...Sb6
        • 2.Sa7#
      • 1...b5
        • 2.Qxa8#
      • 1...b6
        • 2.Sa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • S(j);CHECK,N_GUARD::R1(C),XS(j)
    • P(h);OGATEB,SBLOCK::QAB(B),XS(j)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • P(h);OGATEB,P_SPINP(h),SBLOCK::QAB(B),XS(j)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • S(j);CHECK,N_GUARD::R1(C),XS(j)
      • B(a);N_GUARD::S(D)
      • B(a);SBLOCK::P(A)
      • B(a);S_CUTP(h)::QAB(B)
      • S(f);N_GUARD::S(D)
      • S(f);N_GUARD::S(D),XS(f)
      • S(j);S_CUTB(a)::S(D)
      • P(h);OGATEB,SBLOCK::QAB(B),XS(j)
      • P(h);S_CUTB(a)::S(D)
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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).