MESON Chess Problem Database

Problem Display
PID: 224532 (N4B2/b1rp2R1/P1k2p2/p3Pn2/K2pP3/n2N4/1Q6/8 w - - 0 1)

Mitchum, William E

Nashville Daily American, 1887

N4B2/b1rp2R1/P1k2p2/p3Pn2/K2pP3/n2N4/1Q6/8

#2

9 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rb7
      • 2.Qxb7#
    • 1...Rc8
      • 2.Qb7#
    • 1...Bb6
      • 2.Qxb6#
    • 1...Bb8
      • 2.Qb6#
    • 1...Sb1
      • 2.Qb5#
    • 1...Sc2
      • 2.Qb5#
    • 1...Sc4
      • 2.Qb5#
    • 1...Sb5
      • 2.Qxb5#
    • 1...fxe5
      • 2.Sxe5#
    • 1...d5
      • 2.Rxc7#
    • 1...d6
      • 2.Rxc7#
  • Tries
    • 1.Bxa3?
      • threat
        • 2.Qb5#
      • 1...Rb7
        • 2.Qxb7#
      • 1...Sd6!
    • 1.Qb8?
      • threat
        • 2.Qxc7#
      • 1...Rb7
        • 2.Qxb7#
      • 1...Rc8
        • 2.Qb7#
        • 2.Qxc8#
      • 1...Bb6
        • 2.Qxb6#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Bxb8!
  • Keys
    • 1.Qb4!
      • 1...Sxg7
        • 2.Qd6#
      • 1...axb4
        • 2.Sxb4#
      • 1...fxe5
        • 2.Sxe5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Rb7
        • 2.Qxb7#
      • 1...Rc8
        • 2.Qb7#
      • 1...Bb6
        • 2.Qxb6#
      • 1...Bb8
        • 2.Qc5#
        • 2.Qb6#
      • 1...Sb1
        • 2.Qb5#
      • 1...Sc2
        • 2.Qb5#
      • 1...Sc4
        • 2.Qb5#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Se3
        • 2.Qd6#
      • 1...Sg3
        • 2.Qd6#
      • 1...Sh4
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sh6
        • 2.Qd6#
      • 1...Se7
        • 2.Qd6#
      • 1...d5
        • 2.Rxc7#
      • 1...d6
        • 2.Rxc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • R(h);N_GUARD::QAB1(A),XR(h)
    • R(h);N_GUARD::QAB1(A)
    • B(g);N_GUARD::QAR1(A),XB(g)
    • B(g);N_GUARD::QAR1(A)
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • P(f);XP(E)::S(B),XP(f)
    • P(i);OGATE::R1(G),XR(h)
  • Tries
    • Try
      • B(I);XS(a)
      • Threat
        • QAB1(A)
      • Vars
        • R(h);N_GUARD::QAB1(A),XR(h)
      • Refutation
        • S(d);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XR(h)
      • Vars
        • R(h);N_GUARD::QAB1(A),XR(h)
        • B(g);N_GUARD::QAR1(A),XB(g)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • B(g);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • S(d);N_GUARD,XR(G)::QAR1(A)
      • P(c);XQ(A)::S(B),XP(c)
      • P(f);XP(E)::S(B),XP(f)
      • B(g);N_GUARD::QAR1(A),XB(g)
      • R(h);N_GUARD::QAB1(A),XR(h)
      • R(h);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(d);N_GUARD::QAR1(A)
      • S(d);N_GUARD::QAR1(A),XS(d)
      • P(i);OGATE::R1(G),XR(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).