MESON Chess Problem Database

Problem Display
PID: 22041 (1KnR2b1/2R1P2P/ppP2N2/4nQPq/BBk4r/2Ppp2r/7p/5N2 w - - 0 1)

Hume, George

Northern Whig, 1923

1KnR2b1/2R1P2P/ppP2N2/4nQPq/BBk4r/2Ppp2r/7p/5N2

#2

13 + 12

3348 Changing Fashions 1925

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rxd4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rf4
      • 2.Qxf4#
    • 1...Be6
      • 2.Qxe6#
    • 1...Bxh7
      • 2.Qe6#
    • 1...Sf3
      • 2.Sxe3#
      • 2.Qxd3#
    • 1...Sg4
      • 2.Rd4#
      • 2.Qxd3#
      • 2.Qe4#
      • 2.Qf4#
    • 1...Sxc6+
      • 2.Rxc6#
    • 1...Sg6
      • 2.Qxd3#
      • 2.hxg8Q#
      • 2.hxg8B#
    • 1...Sd7+
      • 2.cxd7#
    • 1...Sf7
      • 2.Qxd3#
      • 2.Qe6#
      • 2.Qd5#
    • 1...e2
      • 2.Sd2#
  • Tries
    • 1.hxg8Q+?
      • 1...Sf7
        • 2.Qxd3#
        • 2.Qe6#
        • 2.Qd5#
      • 1...Qf7!
    • 1.hxg8B+?
      • 1...Sf7
        • 2.Qxd3#
        • 2.Qe6#
        • 2.Qd5#
      • 1...Qf7!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sxe5#
      • 1...Sxc6+
        • 2.Rxc6#
      • 1...Sxd7+
        • 2.cxd7#
      • 1...Kd5
        • 2.Sxb6#
      • 1...Re4
        • 2.Qxe4#
      • 1...Sf3
        • 2.Sxe3#
      • 1...Sg4
        • 2.Qe4#
      • 1...Sg6
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Sf7
        • 2.Qe6#
      • 1...Sd6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(f);N_GUARD::R1(M),XR(f)
    • R(f);N_GUARD::QAR2(E),XR(f)
    • R(f);N_GUARD::QAR(E),XR(f)
    • B(l);N_GUARD::QAB(E),XB(l)
    • B(l);N_GUARD,XP(K)::QAB(E)
    • S(g);CHECK,OGATE,P_SPINS(g),XP(G)::R(I),XS(g)
    • S(g);CHECK,OGATE::R(I)+P(G),XS(g)
    • P(c);N_GUARD::S(A)
  • Tries
    • Try
      • P(K);CHECK,XB(l)
      • Refutation
        • Q(h);P_SPINQ(h)
    • Try
      • P(K);CHECK,XB(l)
      • Refutation
        • Q(h);P_SPINQ(h)
  • Actual
    • S(H);
    • Threat
      • S(H),XS(g)
    • Vars
      • S(g);CHECK,OGATE,P_SPINS(g),XP(G)::R(I),XS(g)
      • S(g);CHECK,OGATE,XS(H)::R(I)+P(G),XS(g)
      • K(e);P_SPINS(g),S_FLIGHT::R(M)+S(H),DCHECK,XP(j)
      • R(f);N_GUARD::QAR2(E),XR(f)
      • S(g);S_CUTR(d)::S(A),XP(c)
      • S(g);S_CUTR(f)::QAR2(E)
      • S(g);N_GUARD,S_CUTQ(h)::PXB(l)=Q
      • S(g);S_CUTB(l)::QAB(E)
      • S(k);N_GUARD::S(H),XP(j)
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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).