MESON Chess Problem Database

Problem Display
PID: 195211 (2b5/1Q6/1q6/r2nN1R1/3nk3/1p1R2Bp/r3p1PK/b1N5 w - - 0 1)

Dobbs, Gilbert S

Densmore MT (Pittsburgh Gazette-Times), 1918

2b5/1Q6/1q6/r2nN1R1/3nk3/1p1R2Bp/r3p1PK/b1N5

#2

8 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3+
      • 2.gxf3#
    • 1...Sb5
      • 2.Qxd5#
    • 1...Sf5
      • 2.Rg4#
    • 1...Se6
      • 2.Qh7#
  • Keys
    • 1.Sc4!
      • threat
        • 2.Re3#
        • 2.Re5#
      • 1...Sf3+
        • 2.gxf3#
      • 1...Qxb7
        • 2.Sd6#
        • 2.Re5#
      • 1...Bxb7
        • 2.Re5#
      • 1...e1Q
        • 2.Re5#
      • 1...e1R
        • 2.Re5#
      • 1...Qc7
        • 2.Re3#
      • 1...Qc6
        • 2.Re5#
      • 1...Qd6
        • 2.Sxd6#
        • 2.Re3#
      • 1...Qe6
        • 2.Re3#
      • 1...Qf6
        • 2.Re3#
      • 1...Bf5
        • 2.Re3#
      • 1...Sc2
        • 2.Sd2#
      • 1...Sb5
        • 2.Qxd5#
      • 1...Sf5
        • 2.Rg4#
      • 1...Sc6
        • 2.Sd6#
      • 1...Se6
        • 2.Qh7#

There are these versions: 195214

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • S(f);CHECK,OGATE::P(B),XS(f)
    • S(f);S_CUTR(h)::QAB1(H),XS(i)
    • S(f);SBLOCK,S_CUTB(k)::R(G)
    • S(f);N_GUARD,S_CUTB(k),S_CUTQ(j)::QAB(H)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • S(f);CHECK,OGATE::P(B),XS(f)
      • B(k);N_SPINS(i),XQ(H)::R1(G)
      • P(c);P_PINP(B)::R1(G)
      • Q(j);P_PINB(E)::R1(D)
      • Q(j);N_SPINS(i)::R1(G)
      • Q(j);::R1(D)
      • B(k);::R1(D)
      • S(f);S_CUTR(b)::S(F)
      • S(f);S_CUTR(h)::QAB1(H),XS(i)
      • S(f);SBLOCK,S_CUTB(k)::R(G)
      • S(f);N_SPINS(i),S_CUTQ(j)::S(F)
      • S(f);N_GUARD,S_CUTB(k),S_CUTQ(j)::QAB(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).