MESON Chess Problem Database

Problem Display
PID: 55945 (n7/4B2b/6p1/K2NkrNn/1p4rq/8/3R3P/1BQ5 w - - 0 1)

Daniel, Arthur William

7th Comm., Brisbane Courier, 1914-1915

n7/4B2b/6p1/K2NkrNn/1p4rq/8/3R3P/1BQ5

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qb2#
    • 1...Sb6
      • 2.Qc7#
    • 1...Sc7
      • 2.Qxc7#
  • Tries
    • 1.Re2+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kxd5
        • 2.Qc5#
      • 1...Re4!
    • 1.Qc5?
      • threat
        • 2.Bd6#
        • 2.Qd6#
      • 1...Qxg5
        • 2.Qd6#
      • 1...Rgxg5
        • 2.Qd6#
      • 1...Rfxg5
        • 2.Qd6#
      • 1...Rf6!
    • 1.Qc6?
      • threat
        • 2.Bd6#
        • 2.Qd6#
        • 2.Qe6#
      • 1...Qxg5
        • 2.Qd6#
      • 1...Rgxg5
        • 2.Qd6#
      • 1...Rfxg5
        • 2.Qd6#
      • 1...Bg8
        • 2.Bd6#
        • 2.Qd6#
      • 1...Sf4
        • 2.Sf3#
        • 2.Bd6#
        • 2.Qd6#
      • 1...Sg7
        • 2.Bd6#
        • 2.Qd6#
      • 1...Sc7
        • 2.Bd6#
        • 2.Qd6#
        • 2.Qxc7#
      • 1...Rf6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Rd5#
      • 1...Kxf4+
        • 2.Rd5#
      • 1...Rgxf4
        • 2.Qc5#
      • 1...Rfxf4
        • 2.Qc5#
      • 1...Sxf4
        • 2.Qb2#
      • 1...Bg8
        • 2.Sxg6#
      • 1...Sf6
        • 2.Bd6#
      • 1...Sb6
        • 2.Qc7#
      • 1...Sc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(f);S_CUTR(b)::QAB(B)
    • S(i);N_GUARD::QAB(B)
    • S(i);N_GUARD::QAB(B),XS(i)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(d);P_PINS(F),S_FLIGHT::QAB1(B)
        • K(d);P-FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);XS(G)::QAB1(B)
        • R(b);XS(G)::QAB1(B)
        • R(e);XS(G)::QAB1(B)
      • Refutation
        • R(e);
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • Q(c);XS(G)::QAB1(B)
        • R(b);XS(G)::QAB1(B)
        • R(e);XS(G)::QAB1(B)
      • Refutation
        • R(e);
  • Actual
    • S(F);
    • Threat
      • R1(C)
    • Vars
      • K(d);CHECK,S_FLIGHT,XS(F)::QAB(B)+R(C)
      • R(b);SBLOCK,XS(F)::QAR2(B)
      • R(e);SBLOCK,XS(F)::QAR2(B)
      • S(f);SBLOCK,XS(F)::QAB(B)
      • B(h);N_GUARD::S(F),XP(g)
      • S(f);SBLOCK::B(H)
      • S(i);N_GUARD::QAB(B)
      • S(i);N_GUARD::QAB(B),XS(i)
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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).