MESON Chess Problem Database

Problem Display
PID: 193944 (8/6p1/3P1pB1/2pp4/3kN3/3rN1QK/1q1rpB2/2RRb3 w - - 0 1)

Westbury, Eric Ernest

Pittsburgh Gazette-Times, 1916

8/6p1/3P1pB1/2pp4/3kN3/3rN1QK/1q1rpB2/2RRb3

#2

9 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Sc2#
    • 1...dxe4
      • 2.Rc4#
  • Tries
    • 1.Sc4+?
      • 1...Re3
        • 2.Qxe3#
      • 1...Bxf2!
    • 1.Sg4+?
      • 1...Re3
        • 2.Qxe3#
      • 1...Bxf2!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qf4#
      • 1...Qxc1
        • 2.Sb5#
      • 1...Rxe3
        • 2.Sxe2#
      • 1...Qc2
        • 2.Sb5#
      • 1...Rc2
        • 2.Rxd3#
      • 1...c4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(g);SBLOCK::B(C)+S(D),DCHECK
    • P(h);N_GUARD,XS(G)::R1(A)
  • Tries
    • Try
      • S(D);CHECK,P_SPINQ(E)
      • Vars
        • R(e);N_GUARD,P_SPINR(c)::QAB1(E),XR(e)
      • Refutation
        • B(a);XB(C)
    • Try
      • S(D);CHECK,P_SPINQ(E)
      • Vars
        • R(e);N_GUARD,P_SPINR(c)::QAB1(E),XR(e)
      • Refutation
        • B(a);XB(C)
  • Actual
    • S(G);
    • Threat
      • QAR2(E)
    • Vars
      • Q(b);N_GUARD,XR(A)::S(G)
      • R(e);P_PINQ(E),P_SPINR(c),XS(D)::S(G),XP(d)
      • Q(b);N_GUARD::S(G)
      • R(c);OGATE,P_SPINR(e)::R1(B),XR(e)
      • P(g);SBLOCK::B(C)+S(D),DCHECK
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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).