MESON Chess Problem Database

Problem Display
PID: 108793 (6N1/7B/p2ppRn1/Pp2n3/1P2k3/1K2P2p/4Q2P/2B5 w - - 0 1)

Larsen, Peder Andreas

Montreal Gazette, 1896

6N1/7B/p2ppRn1/Pp2n3/1P2k3/1K2P2p/4Q2P/2B5

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Rf4#
  • Tries
    • 1.Bxg6+?
      • 1...Kd5
        • 2.Se7#
      • 1...Sxg6!
    • 1.Qxb5?
      • threat
        • 2.Rf4#
      • 1...Sc4
        • 2.Bxg6#
      • 1...Sd3
        • 2.Bxg6#
      • 1...axb5!
  • Keys
    • 1.Rf5!
      • 1...Kd5
        • 2.Qf3#
      • 1...Kxf5
        • 2.e4#
      • 1...exf5
        • 2.Sf6#
      • 1...Sd3
        • 2.Qf3#
      • 1...Sf3
        • 2.Qc2#
      • 1...Sc4
        • 2.Qc2#
      • 1...Sg4
        • 2.Qc2#
      • 1...Sc6
        • 2.Qc2#
      • 1...Sd7
        • 2.Qc2#
      • 1...Sf7
        • 2.Qc2#
      • 1...Sf4
        • 2.Sf6#
      • 1...Sh4
        • 2.Sf6#
      • 1...Se7
        • 2.Sf6#
      • 1...Sf8
        • 2.Sf6#
      • 1...Sh8
        • 2.Sf6#
      • 1...d5
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
    • P(f);SBLOCK::R1(H)
  • Tries
    • Try
      • B(I);CHECK,XS(h)
      • Vars
        • K(b);S_FLIGHT::S(J)
      • Refutation
        • S(d);XB(I)
    • Try
      • Q(B);XP(c)
      • Threat
        • R1(H)
      • Vars
        • S(d);N_GUARD::B(I),XS(h)
      • Refutation
        • P(e);XQ(B)
  • Actual
    • R(H);N_PINS(h)
    • Vars
      • K(b);P_SPINS(d),S_FLIGHT::QAB(B)
      • K(b);OGATE,P_SPINS(h),S_FLIGHT,XR(H)::P(E)
      • P(g);SBLOCK,XR(H)::S(J)
      • S(d);N_GUARD,SBLOCK::QAB1(B)
      • S(d);N_GUARD::QAB(B)
      • S(h);::S(J)
      • P(f);SBLOCK::R1(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).