MESON Chess Problem Database

Problem Display
PID: 191244 (B5Q1/1rb1Knq1/8/N2k2NR/b2B4/5P2/3R4/4r3 w - - 0 1)

Lipton, Michael

Probleemblad, 2017

B5Q1/1rb1Knq1/8/N2k2NR/b2B4/5P2/3R4/4r3

#2

9 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Se4+?
      • 1...Qe5+
        • 2.Bxe5#
      • 1...Qg5+
        • 2.Bf6#
      • 1...Be5+!
    • 1.Be3+?
      • 1...Ke5
        • 2.Sxf7#
      • 1...Qd4!
  • Keys
    • 1.Se6+!
      • 1...Qe5
        • 2.Ba1#
        • 2.Bg1#
        • 2.Bb2#
        • 2.Bf2#
        • 2.Bc3#
        • 2.Be3#
        • 2.Bc5#
        • 2.Bxe5#
        • 2.Bb6#
        • 2.Ba7#
      • 1...Qg5+
        • 2.Bf6#
      • 1...Re5
        • 2.Ba1#
        • 2.Bg1#
        • 2.Bb2#
        • 2.Bf2#
        • 2.Bc3#
        • 2.Be3#
        • 2.Bc5#
        • 2.Bxe5#
        • 2.Bb6#
        • 2.Ba7#
      • 1...Be5+
        • 2.Sc7#
      • 1...Se5+
        • 2.Sxg7#
      • 1...Sg5+
        • 2.Bxg7#

FEATURES

  • Static
    • TYPE = WHITE_IN_CHECK
  • Tries
    • Try
      • S(E);CHECK,P_SPINS(E)
      • Vars
        • Q(g);CHECK,N_PINS(E),P_SPINQ(g)::R(A)+B(C),XQ(g)
        • Q(g);CHECK,P_SPINQ(g)::R(A)+B(C)
      • Refutation
        • B(e);CHECK,N_PINS(E),P_SPINB(e)
    • Try
      • B(C);CHECK,P_SPINB(C)
      • Vars
        • K(c);N_PINB(C),N_SPINR(d),N_SPINS(f),P-FLIGHT::R(F)+S(E),DCHECK,XS(f)
      • Refutation
        • Q(g);P_SPINQ(g)
  • Actual
    • S(E);CHECK,N_PINS(f),P_SPINS(E)
    • Vars
      • Q(g);CHECK,P_SPINQ(g)::R(A)+B(C)
      • B(e);CHECK,N_PINS(E),P_SPINB(e)::S(E)
      • S(f);CHECK,N_PINS(E),P_SPINS(f)::QAB(I)+S(E),XQ(g)
      • S(f);CHECK,P_SPINS(f)::R(A)+B(C),XQ(g)
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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).