MESON Chess Problem Database

Problem Display
PID: 149027 (4r3/3n2N1/1P1K4/1bPpp3/3k3n/1Qbp1P2/1N6/8 w - - 0 1)

Gardner, John Carey

Good Companions (May), 1918

4r3/3n2N1/1P1K4/1bPpp3/3k3n/1Qbp1P2/1N6/8

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Sf5#
    • 1...Sf5+
      • 2.Sxf5#
    • 1...Sg6
      • 2.Sf5#
  • Keys
    • 1.Sd1!
      • threat
        • 2.Qxd5#
        • 2.Qxc3#
      • 1...Re6+
        • 2.Sxe6#
      • 1...Sf5+
        • 2.Sxf5#
      • 1...Sxf3
        • 2.Qxd5#
      • 1...Sxb6
        • 2.Qxc3#
      • 1...Ba1
        • 2.Qxd5#
      • 1...Be1
        • 2.Qxd5#
      • 1...Bb2
        • 2.Qxd5#
      • 1...Bd2
        • 2.Qxd5#
      • 1...Bb4
        • 2.Qxd5#
      • 1...Ba5
        • 2.Qxd5#
      • 1...Bc4
        • 2.Qxc3#
      • 1...Bc6
        • 2.Qxc3#
      • 1...Sf6
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 2
  • Sets
    • S(d);N_GUARD::S(G)
    • S(d);CHECK,N_GUARD::S(G),XS(d)
  • Actual
    • S(A);
    • Threat
      • DUALS(2)
    • Vars
      • R(i);CHECK,N_GUARD::S(G),XR(i)
      • S(d);CHECK,N_GUARD::S(G),XS(d)
      • S(d);XP(C)::QAR1(B),XP(f)
      • S(h);XP(E)::QAB1(B),XB(a)
      • B(a);::QAR1(B),XP(f)
      • B(a);P_PINP(D)::QAR1(B),XP(f)
      • B(e);::QAB1(B),XB(a)
      • S(h);::QAB1(B),XB(a)
HTML5 logo

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).