MESON Chess Problem Database

Problem Display
PID: 195149 (n1r3rB/Kb3p2/1p5p/3R2bN/4k3/1Bp5/3pnP2/Q5N1 w - - 0 1)

Janet, Frank

Densmore MT (Pittsburgh Gazette-Times), 1918

n1r3rB/Kb3p2/1p5p/3R2bN/4k3/1Bp5/3pnP2/Q5N1

#2

8 + 12

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Be3
      • 2.f3#
    • 1...Bf4
      • 2.Sf6#
    • 1...Bxd5
      • 2.Bc2#
    • 1...Sf4
      • 2.Sg3#
    • 1...c2
      • 2.Qe5#
  • Tries
    • 1.Qa4+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Rc4!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qg2#
      • 1...Bxd5
        • 2.Bc2#
      • 1...Sxg1
        • 2.Qd3#
      • 1...Be3
        • 2.f3#
      • 1...Bf4
        • 2.Sf6#
      • 1...Bh4
        • 2.Qxe2#
      • 1...Bf6
        • 2.Qxe2#
      • 1...Be7
        • 2.Qxe2#
      • 1...Bd8
        • 2.Qxe2#
      • 1...Sd4
        • 2.Re5#
      • 1...Sf4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(e);SBLOCK::P(C)
    • B(e);N_GUARD,SBLOCK::S(F)
    • B(h);SBLOCK,XR(E)::B(D)
    • S(b);N_GUARD,SBLOCK::S(F)
    • P(c);OGATE::QAR1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(A),XS(b)
      • Refutation
        • R(k);P_SPINR(k)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • B(h);SBLOCK,XR(E)::B(D)
      • S(b);OGATE,XS(B)::QAB1(A)
      • B(e);SBLOCK::P(C)
      • B(e);N_GUARD,SBLOCK::S(F)
      • B(e);N_GUARD::QAR2(A),XS(b)
      • S(b);SBLOCK::R1(E)
      • S(b);N_GUARD,SBLOCK::S(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).