MESON Chess Problem Database

Problem Display
PID: 198327 (3n1Rbb/r1r5/3n3Q/R1q1kP2/5p2/2P5/2NN4/4K2B w - - 0 1)

Hartong, Jan

Nieuwe Haarlemsche Courant, 1920

3n1Rbb/r1r5/3n3Q/R1q1kP2/5p2/2P5/2NN4/4K2B

#2

9 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Rxc5#
    • 1...Rg7
      • 2.Qf6#
    • 1...Bf6
      • 2.Qxf6#
    • 1...Sf7
      • 2.Qe6#
  • Tries
    • 1.Rxc5+?
      • 1...Bd5
        • 2.Rxd5#
      • 1...Rxc5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sg4#
      • 1...fxe3
        • 2.Qh2#
      • 1...Rf7
        • 2.Rxc5#
      • 1...Rg7
        • 2.Qf6#
      • 1...Bf7
        • 2.Qxh8#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Se4
        • 2.Sf3#
      • 1...S6f7
        • 2.Sdc4#
      • 1...S8f7
        • 2.Qe6#
      • 1...f3
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(f);N_GUARD,S_CUTB(h)::R(F),XQ(b)
    • R(f);S_CUTB(i)::QAB1(H)
    • B(i);N_GUARD::QAB1(H),XB(i)
    • S(g);N_GUARD,S_CUTB(h)::QAR1(H)
  • Tries
    • Try
      • R(F);CHECK,XQ(b)
      • Vars
        • B(h);N_GUARD,P_SPINB(h)::R1(F),XB(h)
      • Refutation
        • R(f);XR(F)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • P(a);OGATEB,XS(C)::QAB(H)
      • R(f);N_GUARD,S_CUTB(h)::R(F),XQ(b)
      • R(f);S_CUTB(i)::QAB1(H)
      • B(h);S_CUTR(f)::QAB(H),XB(i)
      • B(i);N_GUARD::QAB1(H),XB(i)
      • S(d);SBLOCK::S(D)
      • S(d);N_GUARD,S_CUTB(h)::S(D)
      • S(g);N_GUARD,S_CUTB(h)::QAR1(H)
      • P(a);OGATEB::QAB(H)
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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).