MESON Chess Problem Database

Problem Display
PID: 143347 (2K1Nbb1/Bppp4/1rk1p1pQ/R7/Pp4p1/1B4P1/8/2N5 w - - 0 1)

Ouellet, Charles

Reeves, Alfred Christopher

1st Prize, The Problemist, 2011

2K1Nbb1/Bppp4/1rk1p1pQ/R7/Pp4p1/1B4P1/8/2N5

#2

9 + 11

56 The Problemist 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.axb5#
    • 1...Bd6
      • 2.Qh1#
    • 1...g5
      • 2.Bd5#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qxd7#
      • 1...Bd6
        • 2.Qg2#
      • 1...d6
        • 2.Qc2#
      • 1...d5!
    • 1.Qf4?
      • threat
        • 2.Qxc7#
      • 1...Bd6
        • 2.Qe4#
      • 1...d6
        • 2.Qc4#
      • 1...e5!
    • 1.Qxf8?
      • threat
        • 2.Rc5#
        • 2.Qc5#
      • 1...Rb5
        • 2.axb5#
      • 1...d6!
    • 1.Qxg6?
      • threat
        • 2.Bd5#
      • 1...Rb5
        • 2.axb5#
      • 1...Bd6
        • 2.Qe4#
      • 1...d5
        • 2.Bxd5#
      • 1...d6
        • 2.Qc2#
      • 1...Bc5!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Se5#
      • 1...Rb5
        • 2.axb5#
      • 1...Bd6
        • 2.Qh1#
      • 1...Bg7
        • 2.Rc5#
      • 1...e5
        • 2.Sxe5#
      • 1...d6
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(c);OGATE::P(D),XR(c)
    • B(j);S_CUTP(i)::QAB(F)
    • P(f);P_SPINP(e)::B(B)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAB1(F),XP(i)
      • Vars
        • B(j);S_CUTP(i)::QAB(F)
        • P(i);S_CUTB(j)::QAR(F)
      • Refutation
        • P(i);
    • Try
      • Q(F);
      • Threat
        • QAR1(F),XP(h)
      • Vars
        • B(j);S_CUTP(i)::QAB(F)
        • P(i);S_CUTB(j)::QAR2(F)
      • Refutation
        • P(e);
    • Try
      • Q(F);XB(j)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);OGATE::P(D),XR(c)
      • Refutation
        • P(i);
    • Try
      • Q(F);P_PINP(e),XP(f)
      • Threat
        • B(B)
      • Vars
        • R(c);OGATE::P(D),XR(c)
        • B(j);N_SPINP(e),S_CUTP(i)::QAB(F)
        • P(i);::B(B),XP(i)
        • P(i);N_SPINP(e),S_CUTB(j)::QAR(F)
      • Refutation
        • B(j);
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • R(c);OGATE::P(D),XR(c)
      • B(j);S_CUTP(i)::QAB(F)
      • B(j);N_GUARD::R1(E)
      • P(e);P_SPINP(f)::S(A),XP(e)
      • P(i);S_CUTB(j)::QAR(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).