MESON Chess Problem Database

Problem Display
PID: 63851 (3Nb1nK/3p4/1p4R1/2N2k1p/5P1B/2p2R2/1bP4Q/1B6 w - - 0 1)

Knott, Hubert Edward

Chess Amateur (The), 1909

3Nb1nK/3p4/1p4R1/2N2k1p/5P1B/2p2R2/1bP4Q/1B6

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg6
      • 2.Qh3#
    • 1...Sf6
      • 2.Rg5#
  • Tries
    • 1.Kg7?
      • threat
        • 2.Rg5#
        • 2.Qh3#
      • 1...Bxg6
        • 2.Qh3#
      • 1...Sf6
        • 2.Rg5#
      • 1...Sh6
        • 2.Rg5#
      • 1...bxc5!
    • 1.Rf6+?
      • 1...Kg4
        • 2.Rg3#
        • 2.Qg3#
        • 2.Qh3#
      • 1...Sxf6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd3#
      • 1...cxd2+
        • 2.c3#
      • 1...Kxg6
        • 2.f5#
      • 1...Bxg6
        • 2.Qxd7#
      • 1...Sf6
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(g);SBLOCK,XR(H)::QAB(C)
    • S(h);SBLOCK::R1(H)
  • Tries
    • Try
      • K(J);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(g);XR(H)::QAB(C)
        • S(h);::R1(H)
      • Refutation
        • P(e);XS(G)
    • Try
      • R(H);CHECK
      • Refutation
        • S(h);XR(H)
  • Actual
    • Q(C);
    • Threat
      • QAB(C)
    • Vars
      • P(b);CHECK,OGATE,XQ(C)::B(A)+P(B)
      • K(c);OGATE,S_FLIGHT,XR(H)::P(E)
      • B(g);N_GUARD,SBLOCK,XR(H)::QAB(C),XP(f)
      • S(h);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).