MESON Chess Problem Database

Problem Display
PID: 11320 (4R1B1/4n3/6N1/R1p1P3/4k1p1/4B1p1/2P3K1/5N1Q w - - 0 1)

Bridgwater, Ralph Herbert

Chess, 1938

4R1B1/4n3/6N1/R1p1P3/4k1p1/4B1p1/2P3K1/5N1Q

#2

10 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2+?
      • 1...Kf5
        • 2.Qh5#
      • 1...Kxe3!
    • 1.Sxe7?
      • 1...c4
        • 2.Kxg3#
        • 2.Bh7#
        • 2.Qh7#
      • 1...Kxe5!
    • 1.Ra4+?
      • 1...Kf5
        • 2.Qh5#
      • 1...c4!
    • 1.Qh6?
      • threat
        • 2.Sxg3#
        • 2.Qf4#
      • 1...Kf5
        • 2.Sxg3#
      • 1...Sxg6
        • 2.Sxg3#
        • 2.Qxg6#
      • 1...Sf5
        • 2.Sd2#
        • 2.Qf4#
      • 1...Sd5
        • 2.Sxg3#
      • 1...Sxg8!
  • Keys
    • 1.Qh7!
      • 1...Kf5
        • 2.Sxg3#
      • 1...Sxg6
        • 2.Qxg6#
      • 1...Sxg8
        • 2.Sf4#
      • 1...Sf5
        • 2.Qb7#
      • 1...Sd5
        • 2.Sf4#
        • 2.Sh4#
        • 2.Sf8#
        • 2.Sh8#
      • 1...Sc6
        • 2.Sf4#
        • 2.Sh4#
        • 2.Sf8#
        • 2.Sh8#
      • 1...Sc8
        • 2.Sf4#
        • 2.Sh4#
        • 2.Sf8#
        • 2.Sh8#
      • 1...c4
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT,XB(E)
    • Try
      • S(H);XS(e)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(d),XP(G)
    • Try
      • R(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::S(A),XP(a)
        • S(e);::S(A),XP(a)
      • Refutation
        • S(e);XB(J)
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::S(A),XP(a)
      • S(e);OGATE,P_SPINS(e),XS(H)::QAB(B),XS(e)
      • S(e);N_GUARD,XB(J)::QAB(B)+S(H)
      • S(e);OGATE,SBLOCK::QAB(B)
      • P(d);::QAB(B)+S(H),XS(e)
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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).