MESON Chess Problem Database

Problem Display
PID: 16358 (8/5p2/3p1Q2/3PN1p1/Pp1k2P1/1Bp2P1N/2Pp4/3K4 w - - 0 1)

Rudd, Charles Dember

Chess, 1940

8/5p2/3p1Q2/3PN1p1/Pp1k2P1/1Bp2P1N/2Pp4/3K4

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Sc4#
    • 1...Kc5
      • 2.Sd7#
    • 1...dxe5
      • 2.Qb6#
  • Tries
    • 1.Sg1?
      • 1...Kc5
        • 2.Sd7#
      • 1...dxe5
        • 2.Qb6#
      • 1...Ke3!
    • 1.Sf2?
      • 1...Kc5
        • 2.Sd7#
      • 1...dxe5
        • 2.Qb6#
      • 1...Ke3!
    • 1.Sxg5?
      • 1...Kc5
        • 2.Sd7#
      • 1...dxe5
        • 2.Qb6#
      • 1...Ke3!
    • 1.Sc4+?
      • 1...Kxd5
        • 2.Qxd6#
      • 1...Kc5!
    • 1.Sc6+?
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke3!
    • 1.Ba2?
      • 1...Ke3
        • 2.Sc4#
      • 1...Kc5
        • 2.Sd7#
      • 1...dxe5
        • 2.Qb6#
      • 1...b3!
    • 1.Qf4+?
      • 1...Kc5
        • 2.Sd7#
        • 2.Qe3#
      • 1...gxf4!
    • 1.a5?
      • 1...Ke3
        • 2.Sc4#
      • 1...dxe5
        • 2.Qb6#
      • 1...Kc5!
  • Keys
    • 1.Qxf7!
      • 1...Ke3
        • 2.Qa7#
      • 1...Kc5
        • 2.Qa7#
      • 1...Kxe5
        • 2.Qg7#
      • 1...dxe5
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::S(I)
    • P(f);OGATE,P_SPINP(f),SBLOCK,XS(I)::QAB(J)
  • Tries
    • Try
      • S(E);
      • Vars
        • K(d);S_FLIGHT::S(I)
        • P(f);OGATE,P_SPINP(f),SBLOCK,XS(I)::QAB(J)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(d);S_FLIGHT::S(I)
        • P(f);OGATE,P_SPINP(f),SBLOCK,XS(I)::QAB(J)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(E);XP(e)
      • Vars
        • K(d);S_FLIGHT::S(I)
        • P(f);OGATE,P_SPINP(f),SBLOCK,XS(I)::QAB(J)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(d);OGATEB,P-FLIGHT,XP(H)::QAR1(J),XP(f)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(J)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(d);S_FLIGHT::S(I)
        • P(f);OGATE,P_SPINP(f),SBLOCK,XS(I)::QAB(J)
      • Refutation
        • P(c);
    • Try
      • Q(J);CHECK
      • Refutation
        • P(e);XQ(J)
    • Try
      • P(F);
      • Vars
        • K(d);S_FLIGHT::S(I)
        • P(f);OGATE,P_SPINP(f),SBLOCK,XS(I)::QAB(J)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(J);XP(g)
    • Vars
      • K(d);S_FLIGHT::QAB(J)
      • K(d);OGATEB,S_FLIGHT,XS(I)::QAB(J)
      • P(f);SBLOCK,XS(I)::QAB(J)
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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).