MESON Chess Problem Database

Problem Display
PID: 175026 (Q2n3b/1pK1pp2/1R2pk1p/2p3RP/b1P3P1/8/3B4/8 w - - 0 1)

Bernard, Henry D'Oyly

San Francisco Chronicle, 1901

Q2n3b/1pK1pp2/1R2pk1p/2p3RP/b1P3P1/8/3B4/8

#2

8 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qa1#
    • 1...Bc2
      • 2.Qa1#
    • 1...Bb3
      • 2.Qa1#
    • 1...Bb5
      • 2.Qa1#
    • 1...Bd7
      • 2.Qa1#
    • 1...Be8
      • 2.Qa1#
    • 1...Bg7
      • 2.Rf5#
    • 1...Sc6
      • 2.Qxh8#
    • 1...hxg5
      • 2.Bc3#
  • Tries
    • 1.Kxd8?
      • 1...hxg5
        • 2.Bc3#
      • 1...Bd1
        • 2.Qa1#
      • 1...Bc2
        • 2.Qa1#
      • 1...Bb3
        • 2.Qa1#
      • 1...Bb5
        • 2.Qa1#
      • 1...Bd7
        • 2.Qa1#
      • 1...Be8
        • 2.Qa1#
      • 1...Bg7
        • 2.Rf5#
      • 1...Bc6!
    • 1.Bc1?
      • 1...hxg5
        • 2.Bb2#
      • 1...Bd1
        • 2.Qa1#
      • 1...Bc2
        • 2.Qa1#
      • 1...Bb3
        • 2.Qa1#
      • 1...Bb5
        • 2.Qa1#
      • 1...Bd7
        • 2.Qa1#
      • 1...Be8
        • 2.Qa1#
      • 1...Bg7
        • 2.Rf5#
      • 1...Sc6
        • 2.Qxh8#
      • 1...Bc6!
    • 1.Qxd8?
      • threat
        • 2.Qxh8#
      • 1...Bg7
        • 2.Rf5#
      • 1...Be8!
  • Keys
    • 1.Rd6!
      • 1...hxg5
        • 2.Bc3#
      • 1...exd6
        • 2.Qxd8#
      • 1...Bc6
        • 2.Qa1#
      • 1...Bd1
        • 2.Qa1#
      • 1...Bc2
        • 2.Qa1#
      • 1...Bb3
        • 2.Qa1#
      • 1...Bb5
        • 2.Qa1#
      • 1...Bd7
        • 2.Qa1#
      • 1...Be8
        • 2.Qa1#
      • 1...Bg7
        • 2.Rf5#
      • 1...Sc6
        • 2.Qxh8#
      • 1...b5
        • 2.Qf3#
      • 1...b6
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE::QAB(H)
    • B(j);SBLOCK::R1(D)
    • S(i);N_SPINP(c),OGATE::QAB(H),XB(j)
    • P(e);SBLOCK,XR(D)::B(A)
  • Tries
    • Try
      • K(G);S_FLIGHT,XS(i)
      • Vars
        • P(e);SBLOCK,XR(D)::B(A)
        • B(a);OGATE::QAB(H)
        • B(j);SBLOCK::R1(D)
      • Refutation
        • B(a);N_SPINP(c)
    • Try
      • B(A);
      • Vars
        • P(e);SBLOCK,XR(D)::B(A)
        • B(a);OGATE::QAB(H)
        • B(j);SBLOCK::R1(D)
        • S(i);N_SPINP(c),OGATE::QAB(H),XB(j)
      • Refutation
        • B(a);N_SPINP(c)
    • Try
      • Q(H);XS(i)
      • Threat
        • QAB(H),XB(j)
      • Vars
        • B(j);SBLOCK::R1(D)
      • Refutation
        • B(a);
  • Actual
    • R(F);
    • Vars
      • P(e);SBLOCK,XR(D)::B(A)
      • P(g);N_SPINP(c),OGATEB,XR(F)::QAB(H),XS(i)
      • B(a);OGATE::QAB(H)
      • B(j);SBLOCK::R1(D)
      • S(i);OGATE::QAB(H),XB(j)
      • P(f);OGATE::QAR(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).