MESON Chess Problem Database

Problem Display
PID: 243281 (1B5N/qp2Q1pK/2pn1pP1/Rb3k2/6R1/bNnrp2P/8/1B6 w - - 0 1)

Andersen, Idon Bruno Hovedskou

Skakbladet, 1943

1B5N/qp2Q1pK/2pn1pP1/Rb3k2/6R1/bNnrp2P/8/1B6

#2

10 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Sxd4#
    • 1...Qxb8
      • 2.Sd4#
    • 1...Qxa5
      • 2.Sd4#
    • 1...Qa6
      • 2.Sd4#
    • 1...Qa8
      • 2.Sd4#
    • 1...Sc4
      • 2.Qd7#
    • 1...Sf7
      • 2.Qd7#
    • 1...Sc8
      • 2.Qd7#
    • 1...Se8
      • 2.Qd7#
    • 1...b6
      • 2.Sd4#
  • Tries
    • 1.Bxd3+?
      • 1...Sde4
        • 2.Qd7#
      • 1...Sce4!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Qd7#
      • 1...Sde4
        • 2.Rf4#
      • 1...c5
        • 2.Sxd6#
      • 1...b6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(j);N_GUARD::S(B),XQ(j)
    • Q(j);N_GUARD,XB(I)::S(B)
    • Q(j);N_GUARD,N_SPINB(e),XR(E)::S(B)
    • Q(j);N_GUARD::S(B)
    • S(h);::QAB(G)
    • P(k);S_CUTQ(j)::S(B)
  • Tries
    • Try
      • B(A);CHECK,XR(c)
      • Vars
        • S(h);P_SPINS(h)::QAB(G)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • S(J);
    • Threat
      • QAB(G)
    • Vars
      • S(h);N_SPINR(c)::R1(D)
      • P(g);N_SPINB(e),S_CUTB(a)::S(J),XS(h)
      • P(k);S_CUTQ(j)::S(B)
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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).