MESON Chess Problem Database

Problem Display
PID: 210877 (b1B5/2PQ1p1p/5P1B/4P3/4k3/2b2N2/1pP2nP1/1K6 w - - 0 1)

Lewis, Robert Tony

The Problemist, 1985

b1B5/2PQ1p1p/5P1B/4P3/4k3/2b2N2/1pP2nP1/1K6

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qd4#
    • 1...Bd2
      • 2.Qd4#
    • 1...Bb4
      • 2.Qd4#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Ba5
      • 2.Qd4#
    • 1...Bxe5
      • 2.Sd2#
    • 1...Bd5
      • 2.Qf5#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Bb7
      • 2.Bxb7#
    • 1...Sd1
      • 2.Qd3#
    • 1...Sh1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
      • 2.cxd3#
    • 1...Sh3
      • 2.Qd3#
    • 1...Sg4
      • 2.Qd3#
  • Tries
    • 1.Qa4+?
      • 1...Bb4
        • 2.Qxa8#
      • 1...Bd4
        • 2.Qxd4#
        • 2.Qxa8#
      • 1...Kd5!
  • Keys
    • 1.Qb5!
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Be1
        • 2.Qc4#
      • 1...Bd2
        • 2.Qc4#
      • 1...Bb4
        • 2.Qc4#
      • 1...Bd4
        • 2.Sd2#
      • 1...Ba5
        • 2.Qc4#
      • 1...Bd5
        • 2.Qe2#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sh1
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
        • 2.cxd3#
      • 1...Sh3
        • 2.Qd3#
      • 1...Sg4
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 8
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::QAR1(I)
    • B(c);N_GUARD::QAR1(I),XB(c)
    • B(c);N_GUARD,SBLOCK,XP(E)::S(D)
    • B(g);SBLOCK::QAB1(I)
    • B(g);N_GUARD::QAB(I),XB(g)
    • B(g);N_GUARD::B(J),XB(g)
    • S(b);N_GUARD::QAB1(I)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • B(c);P_SPINB(c)::QAB(I),XB(g)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(I);
    • Vars
      • B(c);OGATE,XP(E)::QAR1(I),XB(c)
      • B(c);N_GUARD::QAR2(I)
      • B(c);N_GUARD,SBLOCK::S(D)
      • B(g);SBLOCK::QAR2(I)
      • B(g);N_GUARD::QAB(I),XB(g)
      • S(b);N_GUARD::QAB1(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).