MESON Chess Problem Database

Problem Display
PID: 267767 (8/1p3K2/4RPP1/1B1k4/1P1Np3/6rN/b2bQ1n1/4rnB1 w - - 0 1)

Vincent, E

The Problemist, 1955

8/1p3K2/4RPP1/1B1k4/1P1Np3/6rN/b2bQ1n1/4rnB1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qxe4#
    • 1...Rb1
      • 2.Qxe4#
    • 1...Rc1
      • 2.Qxe4#
    • 1...Rd1
      • 2.Qxe4#
    • 1...Rb3
      • 2.Bc4#
      • 2.Qc4#
    • 1...Bb1
      • 2.Bc4#
      • 2.Qc4#
    • 1...Bc4
      • 2.Bxc4#
      • 2.Qxc4#
    • 1...Bc3
      • 2.Qxa2#
    • 1...b6
      • 2.Bc6#
  • Keys
    • 1.Sc6!
      • threat
        • 2.Se7#
      • 1...Bxb4
        • 2.Sxb4#
      • 1...bxc6
        • 2.Bxc6#
      • 1...Re3
        • 2.Qh5#
      • 1...Be3
        • 2.Qxa2#
      • 1...Sfe3
        • 2.Qxd2#
      • 1...Sge3
        • 2.Sf4#
      • 1...e3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::QAB1(B),XP(g)
    • B(d);OGATE::QAB(B),XB(c)
    • P(i);N_GUARD::B(F)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • B(d);XP(D)::S(E),XB(d)
      • P(i);OGATE,XS(E)::B(F),XP(i)
      • R(f);N_GUARD,S_CUTB(d)::QAR(B)
      • B(d);OGATE::QAB(B),XB(c)
      • S(b);N_GUARD,S_CUTR(f)::QAR(B),XB(d)
      • S(e);N_GUARD,S_CUTB(d)::S(C)
      • P(g);N_GUARD,S_CUTR(f)::QAR2(B)
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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).