MESON Chess Problem Database

Problem Display
PID: 137850 (1B1R4/5QpK/4p3/3PP1p1/3NkN2/2P3Rn/3Pbq2/8 w - - 0 1)

Rice, John Michael

3rd Prize, The Problemist, 2010

1B1R4/5QpK/4p3/3PP1p1/3NkN2/2P3Rn/3Pbq2/8

#2

11 + 7

56 The Problemist 2011
56 The Problemist 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Re3#
    • 1...Qe3
      • 2.Rxe3#
    • 1...Qf1
      • 2.Re3#
    • 1...Qg2
      • 2.Re3#
    • 1...Qh2
      • 2.Re3#
    • 1...Bd1
      • 2.d3#
    • 1...Bg4
      • 2.d3#
    • 1...Bh5
      • 2.d3#
    • 1...gxf4
      • 2.Qg6#
    • 1...exd5
      • 2.Qf5#
  • Tries
    • 1.Sdxe6?
      • threat
        • 2.Qg6#
      • 1...Qxf4
        • 2.Sc5#
      • 1...Sxf4
        • 2.Sxg5#
      • 1...Bg4
        • 2.d3#
      • 1...Bh5
        • 2.d3#
      • 1...g6
        • 2.Qxg6#
      • 1...Qxg3!
    • 1.dxe6?
      • threat
        • 2.Qf5#
      • 1...Qxd4
        • 2.Rxd4#
      • 1...Qxf4
        • 2.Qb7#
      • 1...Bg4
        • 2.d3#
      • 1...g6!
  • Keys
    • 1.Sfxe6!
      • threat
        • 2.Sc5#
      • 1...Qf5+
        • 2.Qxf5#
      • 1...Qxd4
        • 2.Qg6#
      • 1...Qxf7
        • 2.Re3#
      • 1...Qf6
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • Q(b);N_GUARD::R1(C)
    • Q(b);N_GUARD::R1(C),XQ(b)
    • B(a);N_GUARD::P(A)
    • P(e);SBLOCK,XS(E)::QAB(H)
    • P(f);N_GUARD,XP(F)::QAB1(H)
  • Tries
    • Try
      • S(D);XP(f)
      • Threat
        • QAB(H)
      • Vars
        • Q(b);N_GUARD,XS(E)::S(D)
        • S(c);N_GUARD,XS(E)::S(D),XP(e)
        • B(a);N_GUARD::P(A)
        • P(g);::QAB(H),XP(g)
      • Refutation
        • Q(b);XR(C)
    • Try
      • P(F);XP(f)
      • Threat
        • QAB1(H)
      • Vars
        • Q(b);OGATE,XS(D)::R1(K),XQ(b)
        • Q(b);SBLOCK,XS(E)::QAB(H)
        • B(a);N_GUARD::P(A)
      • Refutation
        • P(g);
  • Actual
    • S(E);XP(f)
    • Threat
      • S(E)
    • Vars
      • Q(b);CHECK,N_GUARD::QAB1(H),XQ(b)
      • Q(b);N_GUARD,XS(D)::QAB(H)
      • Q(b);N_GUARD,XQ(H)::R1(C)
      • Q(b);N_GUARD::R1(C)
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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).