MESON Chess Problem Database

Problem Display
PID: 202670 (2N2Bb1/1nbr4/4N3/n2k1p1r/8/8/K1Q5/4R3 w - - 0 1)

Mosely, Arthur James

Brisbane Courier, 1923

2N2Bb1/1nbr4/4N3/n2k1p1r/8/8/K1Q5/4R3

#2

6 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Se7#
    • 1...Bh2
      • 2.Sb6#
    • 1...Bg3
      • 2.Sb6#
    • 1...Bf4
      • 2.Sb6#
    • 1...Bb6
      • 2.Sxb6#
    • 1...Bd6
      • 2.Sb6#
    • 1...Bb8
      • 2.Sb6#
    • 1...Sc4
      • 2.Qg2#
    • 1...Sc6
      • 2.Qb3#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sd6
      • 2.Qc5#
    • 1...Sd8
      • 2.Qc5#
    • 1...f4
      • 2.Qe4#
  • Tries
    • 1.Se7+?
      • 1...Kd6
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qd2#
      • 1...Rxe7!
    • 1.Qb3+?
      • 1...Kc6
        • 2.Sa7#
      • 1...Sc4
        • 2.Qf3#
        • 2.Qxb7#
      • 1...Sxb3!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Re5#
      • 1...Rxd6
        • 2.Se7#
      • 1...Bxd6
        • 2.Sb6#
      • 1...Bxe6
        • 2.Rd1#
      • 1...Sxd6
        • 2.Qc5#
      • 1...Sc4
        • 2.Qg2#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc6
        • 2.Qb3#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(g);N_GUARD,SBLOCK::S(E)
    • B(f);N_GUARD::S(E)
    • B(f);N_GUARD::S(E),XB(f)
    • S(a);SBLOCK::QAB(C)
    • S(a);N_GUARD,SBLOCK::QAB(C)
    • S(e);N_GUARD::QAR1(C),XS(e)
    • S(e);N_GUARD::QAR1(C)
    • P(c);N_GUARD::QAB1(C)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • R(g);XS(E)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::S(E)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • B(F);
    • Threat
      • R1(A)
    • Vars
      • R(g);N_GUARD,SBLOCK,XB(F)::S(E)
      • B(f);N_GUARD,SBLOCK,XB(F)::S(E)
      • B(h);SBLOCK,XS(D)::R(A)
      • S(e);N_GUARD,XB(F)::QAR1(C)
      • S(a);SBLOCK::QAB(C)
      • S(e);N_GUARD::QAR1(C),XS(e)
      • S(a);N_GUARD,SBLOCK::QAB(C)
      • P(c);N_GUARD::QAB1(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).