MESON Chess Problem Database

Problem Display
PID: 64898 (6b1/p1B2pb1/2NR3p/q1pp1p1p/R1n1nk2/3P1N1P/4P2K/6Q1 w - - 0 1)

Westbury, Eric Ernest

1st Prize, Boston Transcript, 1917

6b1/p1B2pb1/2NR3p/q1pp1p1p/R1n1nk2/3P1N1P/4P2K/6Q1

#2

10 + 13

56 The Problemist 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Qg3#
    • 1...Sb6
      • 2.Rf6#
    • 1...Sc3
      • 2.Qc1#
  • Tries
    • 1.Rf6+?
      • 1...Se5
        • 2.Bxe5#
      • 1...Scd6
        • 2.Bxd6#
      • 1...Sed6
        • 2.Bxd6#
      • 1...Qxc7!
    • 1.e3+?
      • 1...Sxe3
        • 2.Qg3#
      • 1...Kxf3!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sxd5#
      • 1...Se3
        • 2.Qg3#
      • 1...Sb6
        • 2.Rf6#
      • 1...Sc3
        • 2.Qc1#
      • 1...Sf6
        • 2.Rb6#
      • 1...d4
        • 2.Sd5#
      • 1...f6
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);P_SPINS(b),SBLOCK::QAB1(A)
    • S(a);N_GUARD,P_SPINS(b),S_CUTQ(d)::B(J)+R(I)
    • S(b);N_GUARD,P_SPINS(a),S_CUTQ(d)::QAB(A)
  • Tries
    • Try
      • R(I);CHECK,P_PINP(g)
      • Vars
        • S(a);N_GUARD,P_SPINS(b)::B(J),XS(a)
        • S(b);N_GUARD,P_SPINS(a)::B(J),XS(b)
      • Refutation
        • Q(d);XB(J)
    • Try
      • P(B);CHECK
      • Vars
        • S(a);P_SPINS(b),SBLOCK,XP(B)::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT,XS(E)
  • Actual
    • S(H);
    • Threat
      • S(H),XP(f)
    • Vars
      • S(a);P_SPINS(b),SBLOCK::QAB1(A)
      • S(a);N_GUARD,P_SPINS(b),S_CUTQ(d)::B(J)+R(I)
      • S(b);N_GUARD,P_SPINS(a),S_CUTQ(d)::QAB(A)
      • S(b);N_GUARD,P_SPINS(a),S_CUTB(l)::B(J)+R(I)
      • P(f);::S(H)
      • P(k);N_GUARD::S(H)
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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).