MESON Chess Problem Database

Problem Display
PID: 223057 (8/8/1PnkPBp1/1p4N1/1P4K1/1pQBbNn1/8/8 w - - 0 1)

Cumming, George AW

New York Telegram, 1885

8/8/1PnkPBp1/1p4N1/1P4K1/1pQBbNn1/8/8

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qc5#
    • 1...Bd2
      • 2.Qc5#
    • 1...Bf4
      • 2.Qc5#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Sd4
      • 2.Qc5#
  • Tries
    • 1.Sf7+?
      • 1...Kd5
        • 2.Qxb3#
      • 1...Kxe6!
    • 1.Be4?
      • threat
        • 2.Qxc6#
      • 1...Se5+
        • 2.Qxe5#
      • 1...Sxb4
        • 2.Qe5#
        • 2.Qc7#
      • 1...Bc5
        • 2.Qxc5#
        • 2.bxc5#
      • 1...Sd4
        • 2.Qc5#
        • 2.Qc7#
      • 1...Sa5
        • 2.Qe5#
        • 2.Qc7#
      • 1...Sa7
        • 2.Qe5#
        • 2.Qc7#
      • 1...Se7
        • 2.Be5#
        • 2.Qe5#
        • 2.Qc7#
      • 1...Sb8
        • 2.Qe5#
        • 2.Qc7#
      • 1...Sd8
        • 2.Qe5#
        • 2.Qc7#
      • 1...Sxe4!
  • Keys
    • 1.Bxb5!
      • threat
        • 2.Qxc6#
      • 1...Se5+
        • 2.Qxe5#
      • 1...Kd5
        • 2.Qxc6#
      • 1...Sxb4
        • 2.Qe5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sd4
        • 2.Qc5#
      • 1...Sa5
        • 2.Qe5#
      • 1...Sa7
        • 2.Qe5#
      • 1...Se7
        • 2.Qe5#
      • 1...Sb8
        • 2.Qe5#
      • 1...Sd8
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD::QAB1(A)
    • B(b);N_GUARD::QAB1(A),XB(b)
    • S(e);S_CUTB(b)::QAB1(A)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(f);P-FLIGHT::QAB(A),XP(a)
      • Refutation
        • K(f);P-FLIGHT,XP(H)
    • Try
      • B(B);
      • Threat
        • QAR1(A),XS(e)
      • Vars
        • S(e);CHECK,N_GUARD::QAB1(A),XS(e)
      • Refutation
        • S(c);XB(B)
  • Actual
    • B(B);XP(d)
    • Threat
      • QAR1(A),XS(e)
    • Vars
      • S(e);CHECK,N_GUARD::QAB1(A),XS(e)
      • K(f);P-FLIGHT::QAB1(A),XS(e)
      • S(e);N_GUARD,XP(D)::QAB1(A)
      • B(b);N_GUARD::QAB1(A),XB(b)
      • S(e);S_CUTB(b)::QAB1(A)
      • S(e);N_GUARD::QAB1(A)
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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).