MESON Chess Problem Database

Problem Display
PID: 144835 (3r4/1n6/b1q1rb2/3pNQp1/1B1k1N1p/3P4/3PB2K/6n1 w - - 0 1)

Dobbs, Gilbert S

2nd Prize, Pittsburgh Gazette-Times, 1915

3r4/1n6/b1q1rb2/3pNQp1/1B1k1N1p/3P4/3PB2K/6n1

#2

8 + 11

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Sxe6#
    • 1...Qb5
      • 2.Sxe6#
    • 1...Qc1
      • 2.Sxe6#
    • 1...Qc2
      • 2.Sxe6#
    • 1...Qc3
      • 2.Sxe6#
    • 1...Qc4
      • 2.Sxe6#
    • 1...Qc5
      • 2.Sxe6#
    • 1...Qc7
      • 2.Sxe6#
    • 1...Re7
      • 2.Sxc6#
    • 1...Ree8
      • 2.Sxc6#
    • 1...Sxe2
      • 2.Sxe2#
      • 2.Sf3#
    • 1...Sf3+
      • 2.Sxf3#
    • 1...Sh3
      • 2.Sf3#
    • 1...Sc5
      • 2.Bc3#
    • 1...Sd6
      • 2.Sxe6#
      • 2.Sxc6#
    • 1...gxf4
      • 2.Qxf4#
  • Tries
    • 1.Bc3+?
      • 1...Qxc3
        • 2.Sxe6#
      • 1...Kc5!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Sfg6#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...Kxe5
        • 2.Sg6#
      • 1...Rxe5
        • 2.Se6#
      • 1...Bxd3
        • 2.Sfxd3#
      • 1...Bxe5
        • 2.Qxg1#
      • 1...Sxe2
        • 2.Sf3#
      • 1...gxf4
        • 2.Qxf4#
      • 1...Sh3
        • 2.Sf3#
      • 1...Sc5
        • 2.Bc3#
      • 1...Sd6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 10
  • Sets
    • Q(g);N_GUARD::S(F),XR(h)
    • R(h);N_GUARD::S(G),XQ(g)
    • S(a);CHECK,N_GUARD::S(G),XS(a)
    • S(a);N_GUARD::S(G)
    • S(j);SBLOCK,S_CUTQ(g)::B(E)
    • P(e);OGATE,XS(F)::QAR2(H),XP(e)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • Q(g);XB(E)::S(F),XR(h)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(H);
    • Threat
      • QAR(H)+S(F)
    • Vars
      • S(a);CHECK,N_GUARD::S(G),XS(a)
      • K(b);S_FLIGHT,XS(G)::S(F)
      • R(h);SBLOCK,XS(G)::QAR(H)+S(F),DCHECK
      • B(f);XP(D)::QAR(H)+S(F),XB(f)
      • B(i);P_PINS(F),SBLOCK,XS(G)::QAB(H),XS(a)
      • S(a);N_GUARD,XB(B)::S(G)
      • P(e);OGATE,P_SPINP(e),XS(F)::QAR2(H),XP(e)
      • S(a);N_GUARD::S(G)
      • S(j);SBLOCK,S_CUTQ(g)::B(E)
      • S(j);S_CUTR(h)::S(G),XQ(g)
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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).