MESON Chess Problem Database

Problem Display
PID: 16522 (4nN2/3q2nN/3Rp1R1/5p1k/3Q1Pp1/5BPp/3K3P/8 w - - 0 1)

Inman, WP

Chess, 1941

4nN2/3q2nN/3Rp1R1/5p1k/3Q1Pp1/5BPp/3K3P/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd6
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sc7
      • 2.Sf6#
    • 1...e5
      • 2.Rg5#
      • 2.Rh6#
  • Tries
    • 1.Rxg4?
      • threat
        • 2.Rh4#
        • 2.Rg6#
      • 1...Kh6
        • 2.Rg6#
      • 1...Qc6
        • 2.Rh4#
      • 1...Qb7
        • 2.Rh4#
      • 1...Sf6
        • 2.Rh4#
      • 1...fxg4!
    • 1.Qf6?
      • threat
        • 2.Rg5#
        • 2.Rh6#
        • 2.Qh4#
        • 2.Qg5#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...gxf3
        • 2.Rg5#
        • 2.Qh4#
        • 2.Qg5#
      • 1...Qe7
        • 2.Rg5#
        • 2.Rh6#
      • 1...Qd8
        • 2.Rg5#
        • 2.Rh6#
      • 1...Qxd6+!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Bxg4#
      • 1...gxf3
        • 2.Qxf3#
      • 1...exd5
        • 2.Rg5#
        • 2.Rh6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...e5
        • 2.Rg5#
        • 2.Rh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(h);N_GUARD,XR(G)::S(I)
    • S(h);N_GUARD::S(I),XS(h)
    • S(h);N_GUARD::S(I)
  • Tries
    • Try
      • R(H);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::R1(H)
        • Q(f);::B(C)+R(H),DCHECK
        • S(h);::B(C)+R(H),DCHECK
      • Refutation
        • P(c);P_SPINP(c),XR(H)
    • Try
      • Q(E);P_SPINR(G)
      • Threat
        • DUALS(4)
      • Vars
        • S(h);XQ(E)::S(I),XS(h)
      • Refutation
        • Q(f);CHECK,XR(G)
  • Actual
    • Q(E);
    • Threat
      • B(C),XP(b)
    • Vars
      • P(b);N_SPINP(b),OGATE,P_SPINP(c),XB(C)::QAB(E),XP(b)
      • S(h);N_GUARD::S(I),XS(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).