MESON Chess Problem Database

Problem Display
PID: 174984 (B4B2/1QPp4/1p1qP3/4NR2/b2k2r1/3p1pr1/1P3Pp1/N5K1 w - - 0 1)

Clark, WA

3rd Prize, Eastern Daily Press, 1901

B4B2/1QPp4/1p1qP3/4NR2/b2k2r1/3p1pr1/1P3Pp1/N5K1

#2

11 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Qd5#
    • 1...Qb4
      • 2.Qd5#
    • 1...Qxc7
      • 2.Qd5#
    • 1...Qe7
      • 2.Qd5#
    • 1...Qxf8
      • 2.Qd5#
    • 1...Qd5
      • 2.Qxd5#
    • 1...Bb3
      • 2.Sxb3#
    • 1...Bb5
      • 2.Sb3#
  • Tries
    • 1.Bxd6?
      • threat
        • 2.Qd5#
        • 2.Qxb6#
      • 1...dxe6
        • 2.Qxb6#
      • 1...Bb3
        • 2.Sxb3#
        • 2.Qxb6#
      • 1...b5
        • 2.Qd5#
        • 2.Qb6#
        • 2.Qa7#
      • 1...Bc6!
    • 1.Rf4+?
      • 1...Kc5
        • 2.Qd5#
      • 1...Kxe5
        • 2.Qe4#
      • 1...Rxf4!
    • 1.Qe4+?
      • 1...Kc5
        • 2.Sxd3#
        • 2.Sxf3#
        • 2.Sxg4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sxd7#
        • 2.Sf7#
      • 1...Rxe4!
    • 1.Qxb6+?
      • 1...Qc5
        • 2.Bxc5#
        • 2.Qxc5#
      • 1...Qxb6!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qc4#
      • 1...Kc5
        • 2.Sc6#
      • 1...Qxe5
        • 2.Qxa4#
      • 1...Qxc7
        • 2.Qxd3#
      • 1...Qxe6
        • 2.Qxd3#
      • 1...Qc6
        • 2.Qxd3#
      • 1...Qb4
        • 2.Qxd3#
      • 1...Qc5
        • 2.Qxd3#
      • 1...Qd5
        • 2.Qxd3#
      • 1...Bb3
        • 2.Sxb3#
      • 1...Bb5
        • 2.Sb3#
      • 1...b5
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(i);N_GUARD::QAR1(H)
    • Q(i);N_GUARD,XP(I)::QAR1(H)
    • Q(i);N_GUARD,XB(K)::QAR1(H)
    • Q(i);N_GUARD::QAR1(H),XQ(i)
    • B(e);N_GUARD::S(A),XB(e)
    • B(e);N_GUARD::S(A)
  • Tries
    • Try
      • B(K);XQ(i)
      • Threat
        • DUALS(2)
      • Vars
        • P(j);XP(G)::QAB(H),XP(h)
      • Refutation
        • B(e);
    • Try
      • R(F);CHECK
      • Vars
        • K(f);P_SPINQ(i),S_FLIGHT::QAR1(H)
        • K(f);S_FLIGHT,XS(E)::QAR1(H)
      • Refutation
        • R(g);XR(F)
    • Try
      • Q(H);CHECK
      • Refutation
        • R(g);XQ(H)
    • Try
      • Q(H);CHECK,XP(h)
      • Refutation
        • Q(i);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • K(f);P_SPINQ(i),S_FLIGHT::R(F)+S(E)
      • Q(i);N_GUARD,XS(E)::QAR(H),XB(e)
      • Q(i);XP(I)::QAR1(H),XP(b)
      • Q(i);XP(G)::QAR1(H),XP(b)
      • Q(i);::QAR1(H),XP(b)
      • B(e);N_GUARD::S(A),XB(e)
      • B(e);N_GUARD::S(A)
      • P(h);OGATE::QAR2(H),XQ(i)
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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).