MESON Chess Problem Database

Problem Display
PID: 39109 (2B2bq1/6p1/2pN4/1PBk2rn/3PRpP1/4P2K/brP3N1/8 w - - 0 1)

Howard, David M

Problem Observer, 2001

2B2bq1/6p1/2pN4/1PBk2rn/3PRpP1/4P2K/brP3N1/8

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Bxe6#
    • 1...Qh7
      • 2.Be6#
    • 1...Qh8
      • 2.Be6#
    • 1...Rb3
      • 2.c4#
    • 1...Rxg4
      • 2.Re5#
    • 1...Re5
      • 2.Rxe5#
    • 1...Rg6
      • 2.Re5#
    • 1...Bb1
      • 2.c4#
    • 1...Sg3
      • 2.Sxf4#
    • 1...Sf6
      • 2.Sxf4#
    • 1...fxe3
      • 2.Sxe3#
    • 1...cxb5
      • 2.Bb7#
  • Tries
    • 1.Re8?
      • threat
        • 2.e4#
      • 1...fxe3
        • 2.Sxe3#
      • 1...cxb5
        • 2.Bb7#
      • 1...Qe6
        • 2.Bxe6#
      • 1...Qh7
        • 2.Be6#
      • 1...Rb3
        • 2.c4#
      • 1...Re5
        • 2.Rxe5#
      • 1...Sg3
        • 2.Sxf4#
      • 1...Sf6
        • 2.Sxf4#
      • 1...Bxd6!
  • Keys
    • 1.Re7!
      • threat
        • 2.e4#
      • 1...fxe3
        • 2.Sxe3#
      • 1...cxb5
        • 2.Bb7#
      • 1...Qe6
        • 2.Bxe6#
      • 1...Qh7
        • 2.Be6#
      • 1...Rb3
        • 2.c4#
      • 1...Re5
        • 2.Rxe5#
      • 1...Sg3
        • 2.Sxf4#
      • 1...Sf6
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • Q(j);N_GUARD,P_PINP(G)::B(K),XQ(j)
    • Q(j);N_GUARD::B(K)
    • R(b);P_PINP(C),S_CUTB(a)::P(A)
    • R(e);N_GUARD,XP(G)::R1(F)
    • R(e);N_GUARD::R1(F),XR(e)
    • R(e);N_GUARD::R1(F)
    • B(a);N_GUARD::P(A)
    • S(f);N_GUARD::S(B),XP(c)
    • P(c);XP(C)::S(B),XP(c)
    • P(g);OGATEB,XP(H)::B(K)
  • Tries
    • Try
      • R(F);
      • Threat
        • P(C)
      • Vars
        • P(c);XP(C)::S(B),XP(c)
        • P(g);OGATEB,XP(H)::B(K)
        • Q(j);N_GUARD,P_PINP(G)::B(K),XQ(j)
        • Q(j);N_GUARD::B(K)
        • R(b);P_PINP(C),S_CUTB(a)::P(A)
        • R(e);N_GUARD::R1(F),XR(e)
        • S(f);N_GUARD::S(B),XP(c)
      • Refutation
        • B(i);XS(J)
  • Actual
    • R(F);
    • Threat
      • P(C)
    • Vars
      • P(c);XP(C)::S(B),XP(c)
      • P(g);OGATEB,XP(H)::B(K)
      • Q(j);N_GUARD,P_PINP(G)::B(K),XQ(j)
      • Q(j);N_GUARD::B(K)
      • R(b);P_PINP(C),S_CUTB(a)::P(A)
      • R(e);N_GUARD::R1(F),XR(e)
      • S(f);N_GUARD::S(B),XP(c)
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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).