MESON Chess Problem Database

Problem Display
PID: 238638 (8/4Qp2/4Nn2/6Pp/2PPp2B/1P1pkp1B/1P1RPR2/2K1N3 w - - 0 1)

Einat, Paz

Probleemblad, 1981

8/4Qp2/4Nn2/6Pp/2PPp2B/1P1pkp1B/1P1RPR2/2K1N3

#2

14 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...dxe2
      • 2.Sc2#
    • 1...fxe2
      • 2.Sg2#
  • Tries
    • 1.Qxf7?
      • 1...dxe2
        • 2.Sc2#
      • 1...fxe2
        • 2.Sg2#
      • 1...Sg4
        • 2.Qf4#
      • 1...Sd7
        • 2.Qf4#
      • 1...Sh7
        • 2.Qf4#
      • 1...Se8
        • 2.Qf4#
      • 1...Sg8
        • 2.Qf4#
      • 1...Sd5!
    • 1.gxf6?
      • 1...dxe2
        • 2.Sc2#
      • 1...fxe2
        • 2.Sg2#
      • 1...fxe6!
  • Keys
    • 1.Sc5!
      • 1...Kxd4
        • 2.Sc2#
      • 1...Kf4
        • 2.Sg2#
      • 1...dxe2
        • 2.Rxf3#
      • 1...fxe2
        • 2.Rxd3#
      • 1...Sg4
        • 2.Qxe4#
      • 1...Sd5
        • 2.Qxe4#
      • 1...Sd7
        • 2.Qxe4#
      • 1...Sh7
        • 2.Qxe4#
      • 1...Se8
        • 2.Qxe4#
      • 1...Sg8
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD,XP(E)::S(B)
    • P(c);N_GUARD,XP(E)::S(B)
  • Tries
    • Try
      • Q(N);XP(g)
      • Vars
        • P(a);N_GUARD,XP(E)::S(B)
        • P(c);N_GUARD,XP(E)::S(B)
        • S(f);OGATE::QAB1(N)
      • Refutation
        • S(f);
    • Try
      • P(L);XS(f)
      • Vars
        • P(a);N_GUARD,XP(E)::S(B)
        • P(c);N_GUARD,XP(E)::S(B)
      • Refutation
        • P(g);XS(M)
  • Actual
    • S(M);P_PINP(d)
    • Vars
      • K(b);N_SPINP(d),P_SPINP(a),S_FLIGHT,XP(J)::S(B)
      • K(b);N_SPINP(d),P_SPINP(c),S_FLIGHT::S(B)
      • P(a);XP(E)::R1(F),XP(c)
      • P(c);XP(E)::R1(D),XP(a)
      • S(f);N_GUARD::QAR1(N),XP(d)
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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).