MESON Chess Problem Database

Problem Display
PID: 224663 (1R6/1n6/b1nN1Q1p/N1kp2bR/2p1Pp1p/2B2P1K/8/8 w - - 0 1)

Spitz, William

The Sunny South, 1887

1R6/1n6/b1nN1Q1p/N1kp2bR/2p1Pp1p/2B2P1K/8/8

#2

9 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Bd4#
  • Keys
    • 1.Sc8!
      • threat
        • 2.Qxc6#
      • 1...Kb5
        • 2.Qxc6#
      • 1...Bxf6
        • 2.Rxd5#
      • 1...Scxa5
        • 2.Qb6#
      • 1...Sxb8
        • 2.Qb6#
      • 1...Sbxa5
        • 2.Qd6#
      • 1...Bb5
        • 2.Sxb7#
      • 1...Sb4
        • 2.Qb6#
      • 1...Sd4
        • 2.Qb6#
      • 1...Se5
        • 2.Qb6#
      • 1...Sa7
        • 2.Qb6#
      • 1...Se7
        • 2.Qb6#
      • 1...Scd8
        • 2.Qb6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sbd8
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD,SBLOCK::B(A)
  • Actual
    • S(G);
    • Threat
      • QAR1(H),XS(h)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(j)::QAB1(H),XS(h)
      • B(f);OGATE,P_SPINP(e),XQ(H)::R1(F),XP(e)
      • S(h);OGATE,XS(E)::QAB1(H)
      • S(h);OGATE,XR(I)::QAB1(H)
      • S(j);N_GUARD,XS(E)::QAB1(H)
      • B(g);N_GUARD,SBLOCK::S(E),XS(j)
      • S(h);OGATE::QAB1(H)
      • S(j);N_GUARD::QAB1(H),XS(j)
      • S(j);N_GUARD::QAB1(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).