MESON Chess Problem Database

Problem Display
PID: 10845 (1K2RN2/5Q2/8/1n2PP2/3Pk3/R3b1P1/N3B3/8 w - - 0 1)

Gooderson, Arthur R

Europe Echecs, 1969

1K2RN2/5Q2/8/1n2PP2/3Pk3/R3b1P1/N3B3/8

#2

11 + 3

3207 A R Gooderson An English Progressive 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qc4#
    • 1...Bxd4
      • 2.Bf3#
    • 1...Sxd4
      • 2.Sc3#
  • Tries
    • 1.Sc3+?
      • 1...Kxd4
        • 2.Qc4#
        • 2.Qd5#
      • 1...Sxc3!
    • 1.Bd3+?
      • 1...Kxd4
        • 2.Qc4#
      • 1...Kf3!
    • 1.Bf3+?
      • 1...Kxd4
        • 2.Qd5#
      • 1...Kxf3!
    • 1.Qd7?
      • 1...Bxd4
        • 2.Bf3#
      • 1...Sxa3
        • 2.Sc3#
      • 1...Sxd4
        • 2.Sc3#
      • 1...Bc1
        • 2.Bf3#
      • 1...Bg1
        • 2.Bf3#
      • 1...Bd2
        • 2.Bf3#
      • 1...Bf2
        • 2.Bf3#
      • 1...Bf4
        • 2.Bf3#
      • 1...Bg5
        • 2.Bf3#
      • 1...Bh6
        • 2.Bf3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sa7
        • 2.Sc3#
      • 1...Sc7
        • 2.Sc3#
      • 1...Sd6!
  • Keys
    • 1.Se6!
      • 1...Kd5
        • 2.Qb7#
      • 1...Bxd4
        • 2.Sg5#
      • 1...Sxa3
        • 2.Sc3#
      • 1...Sxd4
        • 2.Sc5#
      • 1...Bc1
        • 2.Bf3#
      • 1...Bg1
        • 2.Bf3#
      • 1...Bd2
        • 2.Bf3#
      • 1...Bf2
        • 2.Bf3#
      • 1...Bf4
        • 2.Bf3#
      • 1...Bg5
        • 2.Bf3#
      • 1...Bh6
        • 2.Bf3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sd6
        • 2.Sc3#
      • 1...Sa7
        • 2.Sc3#
      • 1...Sc7
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 13
    • REMOVED MATES = 1
  • Sets
    • K(b);OGATEB,P-FLIGHT,XP(E)::QAR1(H)
    • B(a);SBLOCK,XP(E)::B(B)
    • S(c);N_GUARD,SBLOCK,XP(E)::S(A)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • S(c);XS(A)
    • Try
      • B(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(E)::QAR1(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(E)::QAR1(H)
      • Refutation
        • K(b);P_SPINB(a),S_FLIGHT,XB(B)
    • Try
      • Q(H);
      • Vars
        • B(a);XP(E)::B(B)
        • S(c);N_GUARD,XR(C)::S(A)
        • S(c);N_GUARD,XP(E)::S(A)
        • B(a);::B(B)
        • B(a);P_PINP(F)::B(B)
        • S(c);N_GUARD::S(A),XS(c)
        • S(c);N_GUARD::S(A)
      • Refutation
        • S(c);
  • Actual
    • S(K);
    • Vars
      • K(b);S_FLIGHT::QAB(H)
      • B(a);N_GUARD,SBLOCK,XP(E)::S(K)
      • S(c);N_GUARD,XR(C)::S(A)
      • S(c);SBLOCK,XP(E)::S(K)
      • B(a);::B(B)
      • B(a);P_PINP(F)::B(B)
      • S(c);N_GUARD::S(A),XS(c)
      • S(c);N_GUARD::S(A)
HTML5 logo

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).