MESON Chess Problem Database

Problem Display
PID: 194187 (2N2Rn1/p2p3Q/P3b2n/2NkPp2/3P4/3K4/8/8 w - - 0 1)

le Charpentier, C

Brisbane Courier, 1917

2N2Rn1/p2p3Q/P3b2n/2NkPp2/3P4/3K4/8/8

#2

8 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.Qh1#
    • 1...Sf7
      • 2.Qh1#
    • 1...Sf6
      • 2.Se7#
    • 1...Se7
      • 2.Sxe7#
    • 1...f4
      • 2.Qe4#
    • 1...d6
      • 2.Qb7#
  • Tries
    • 1.Rxg8?
      • threat
        • 2.Se7#
      • 1...Sxg8
        • 2.Qh1#
      • 1...Kc6!
  • Keys
    • 1.Rf6!
      • 1...Kc6
        • 2.Qxd7#
      • 1...Sxf6
        • 2.Se7#
      • 1...Bf7
        • 2.Rd6#
      • 1...Sg4
        • 2.Qh1#
      • 1...Sf7
        • 2.Qh1#
      • 1...Se7
        • 2.Sxe7#
      • 1...f4
        • 2.Qe4#
      • 1...d6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);OGATE::QAB(F)
    • S(g);N_GUARD::S(G)
    • S(g);N_GUARD::S(G),XS(g)
    • P(b);OGATE::QAB1(F)
    • P(f);OGATE::QAB(F)
  • Tries
    • Try
      • R(H);XS(g)
      • Threat
        • S(G)
      • Vars
        • S(d);OGATE,XR(H)::QAB(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(H);
    • Vars
      • K(a);P_SPINB(c),S_FLIGHT::QAB1(F),XP(f)
      • S(g);N_GUARD,XR(H)::S(G)
      • B(c);OGATE::R1(H)
      • S(d);OGATE::QAB(F)
      • S(g);N_GUARD::S(G),XS(g)
      • P(b);OGATE::QAB1(F)
      • P(f);OGATE::QAB(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).