MESON Chess Problem Database

Problem Display
PID: 67661 (6Q1/2br4/PpN1b1R1/1p1k2N1/pB3n1r/8/K6n/2RB4 w - - 0 1)

Gallery, Terence C

Chess, 1948

6Q1/2br4/PpN1b1R1/1p1k2N1/pB3n1r/8/K6n/2RB4

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Bf3#
    • 1...Sf3
      • 2.Bxf3#
    • 1...Sg4
      • 2.Bf3#
    • 1...Se2
      • 2.Qxe6#
    • 1...Sg2
      • 2.Qxe6#
    • 1...Sd3
      • 2.Qxe6#
    • 1...Sh3
      • 2.Qxe6#
    • 1...Sh5
      • 2.Qxe6#
    • 1...Sxg6
      • 2.Qxe6#
    • 1...a3
      • 2.Bb3#
  • Tries
    • 1.Rxe6?
      • threat
        • 2.Re5#
        • 2.Rd6#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Rd6
        • 2.Re5#
        • 2.Rxd6#
      • 1...Be5
        • 2.Rxe5#
        • 2.Rd6#
      • 1...Bd6
        • 2.Re5#
        • 2.Rxd6#
      • 1...Rf7!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Be4#
      • 1...Kxc6+
        • 2.Bb3#
      • 1...Kc4
        • 2.Be4#
      • 1...Sxg6
        • 2.Qxe6#
      • 1...Se2
        • 2.Qxe6#
      • 1...Sg2
        • 2.Qxe6#
      • 1...Sd3
        • 2.Qxe6#
      • 1...Sh3
        • 2.Qxe6#
      • 1...Sh5
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::B(B)
    • S(a);N_GUARD::B(B),XS(a)
    • S(c);N_GUARD::QAB1(I),XB(h)
    • S(c);N_GUARD,XR(H)::QAB1(I),XB(h)
    • P(b);N_GUARD::B(B)
  • Tries
    • Try
      • R(H);XB(h)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);OGATE,P_SPINS(c),XR(H)::QAB1(I),XS(c)
      • Refutation
        • R(j);
  • Actual
    • B(B);
    • Threat
      • B(B)
    • Vars
      • K(f);CHECK,S_FLIGHT,XS(G)::R(A)+B(B)
      • K(f);S_FLIGHT::R(A)+B(B)
      • S(c);N_GUARD,XR(H)::QAB1(I),XB(h)
      • S(c);N_GUARD::QAB1(I),XB(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).