MESON Chess Problem Database

Problem Display
PID: 92648 (8/4n2B/3p4/N4n1Q/b1Pk3P/4N2R/1K4PB/4R3 w - - 0 1)

Drese, Gerardus Hendrikus

Tijdschrift vd KNSB, 1932

8/4n2B/3p4/N4n1Q/b1Pk3P/4N2R/1K4PB/4R3

#2

11 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sc2#
      • 2.Sxf5#
    • 1...Sxh4
      • 2.Rxh4#
  • Tries
    • 1.Sc2+?
      • 1...Kc5
        • 2.Bg1#
      • 1...Bxc2!
    • 1.Qg4+?
      • 1...Kd3
        • 2.Sf1#
      • 1...Kc5!
  • Keys
    • 1.Bg1!
      • threat
        • 2.Sc2#
        • 2.Sxf5#
      • 1...Kd3
        • 2.Sf1#
      • 1...Ke4
        • 2.Sd5#
      • 1...Kc5
        • 2.Sc2#
      • 1...Ke5
        • 2.Sd5#
      • 1...Sxe3
        • 2.Bxe3#
      • 1...Sxh4
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg4#
        • 2.Sd5#
        • 2.Sf5#
        • 2.Rxh4#
      • 1...Bc2
        • 2.Sxc2#
        • 2.Sxf5#
      • 1...Sg3
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg4#
        • 2.Sd5#
      • 1...Sh6
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg4#
        • 2.Sd5#
        • 2.Sf5#
      • 1...Sg7
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg4#
        • 2.Sd5#
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(c);OGATE,XP(H)::R(F),XS(c)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P_SPINS(c),S_FLIGHT::B(D)
      • Refutation
        • B(a);XS(E)
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINS(c)::R(F)+S(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT,P_SPINS(c)::R(F)+S(E)
      • K(b);P-FLIGHT,P_SPINS(c)::R(A)+S(E)
      • K(b);P_SPINS(c),S_FLIGHT::B(D)+S(E)
      • K(b);P_SPINS(c),S_FLIGHT::R(A)+S(E)
      • S(c);OGATE,P_SPINS(c),XS(E)::B(D),XS(c)
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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).