MESON Chess Problem Database

Problem Display
PID: 134029 (1B6/K4n1B/1p2N1q1/p2kn1R1/3N3R/1P2P3/3Q4/7b w - - 0 1)

Beal, Edward W

The Field, 1964

(First published on Thu Jul 30 1964)

1B6/K4n1B/1p2N1q1/p2kn1R1/3N3R/1P2P3/3Q4/7b

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sh6
      • 2.Rxe5#
    • 1...Sd8
      • 2.Rxe5#
    • 1...Sh8
      • 2.Rxe5#
  • Tries
    • 1.Sf4+?
      • 1...Kc5
        • 2.Qc3#
      • 1...Ke4!
    • 1.Qb4?
      • threat
        • 2.Sc7#
        • 2.Qc4#
        • 2.Qb5#
      • 1...Qxg5
        • 2.Sc7#
        • 2.Qb5#
      • 1...Qxe6
        • 2.Qc4#
        • 2.Qb5#
      • 1...Sxg5
        • 2.Sc7#
        • 2.Qd6#
        • 2.Qb5#
      • 1...Qc2
        • 2.Sf4#
      • 1...Qd3
        • 2.Sf4#
        • 2.Sc7#
      • 1...Qf5
        • 2.Sc7#
        • 2.Qb5#
      • 1...Sd6
        • 2.Sc7#
        • 2.Qxd6#
      • 1...b5
        • 2.Sc7#
        • 2.Qc5#
        • 2.Qxb5#
      • 1...axb4!
    • 1.Qxa5+?
      • 1...b5
        • 2.Qxb5#
      • 1...bxa5!
    • 1.Qg2+?
      • 1...Qe4
        • 2.Bxe4#
      • 1...Bxg2!
  • Keys
    • 1.Kxb6!
      • threat
        • 2.Qxa5#
      • 1...Qxe6+
        • 2.Sc6#
      • 1...Qc2
        • 2.Sf4#
      • 1...Qd3
        • 2.Sf4#
      • 1...Sd6
        • 2.Sc7#
      • 1...a4
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • S(g);N_GUARD::R1(F),XS(d)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);N_SPINS(d),P_SPINQ(f),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • Q(f);::S(G)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);CHECK,XP(b)
      • Vars
        • P(e);P_SPINP(e)::QAR2(A),XP(e)
      • Refutation
        • P(e);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • Q(f);OGATE,P_SPINQ(f)::B(I),XQ(f)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • K(H);P_SPINS(G),S_FLIGHT,XP(e)
    • Threat
      • QAR(A),XP(b)
    • Vars
      • Q(f);CHECK,N_GUARD,SBLOCK,XS(G)::QAR(A)+S(D)
      • Q(f);N_PINS(G)::S(G)
      • S(g);N_PINS(G),SBLOCK::S(G)
      • P(b);::QAR(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).