MESON Chess Problem Database

Problem Display
PID: 271609 (B2N1n2/2p4r/b2b2Qp/n4p1K/3P1kpP/7R/7P/6N1 w - - 0 1)

Wagstaff, E

The Problemist, 1956

B2N1n2/2p4r/b2b2Qp/n4p1K/3P1kpP/7R/7P/6N1

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd7
      • 2.Qxh6#
    • 1...Re7
      • 2.Qxh6#
    • 1...Rf7
      • 2.Qxh6#
    • 1...Be2
      • 2.Sxe2#
    • 1...Bc8
      • 2.Se2#
    • 1...Sc4
      • 2.Se2#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sxg6
      • 2.Se6#
    • 1...Sd7
      • 2.Se6#
    • 1...gxh3
      • 2.Qg3#
    • 1...g3
      • 2.Qxg3#
    • 1...c5
      • 2.Qxd6#
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qe3#
      • 1...Sxe6
        • 2.Sxe6#
      • 1...gxh3
        • 2.Sxh3#
      • 1...Re7
        • 2.Qxh6#
      • 1...Be5
        • 2.Qxe5#
      • 1...Sc4
        • 2.Se2#
      • 1...g3
        • 2.hxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(i);N_GUARD::QAB(G),XP(g)
    • B(e);N_GUARD::S(A),XB(e)
    • B(e);N_GUARD::S(A)
    • S(c);S_CUTB(e)::S(A)
    • S(j);N_GUARD::S(I),XS(j)
    • S(j);N_GUARD,XQ(G)::S(I)
    • S(j);N_GUARD::S(I)
    • P(b);OGATE,XR(C)::QAB1(G)
    • P(b);OGATE::QAB1(G),XP(b)
    • P(h);N_GUARD::QAB(G),XB(f)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • S(j);XQ(G)::S(I),XS(j)
      • P(b);XR(C)::S(A),XP(b)
      • R(i);N_GUARD::QAB(G),XP(g)
      • B(f);N_GUARD::QAB1(G),XB(f)
      • S(c);S_CUTB(e)::S(A)
      • P(b);OGATE::P(B),XP(b)
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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).