MESON Chess Problem Database

Problem Display
PID: 220674 (8/p1K5/Rn2k1P1/7P/1Ppp1pNB/p3N2B/Q3b3/4R3 w - - 0 1)

Boswell, Edward

British Chess Magazine, 1926

8/p1K5/Rn2k1P1/7P/1Ppp1pNB/p3N2B/Q3b3/4R3

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qxc4#
    • 1...d3
      • 2.Qxc4#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qe4#
        • 2.Qf5#
      • 1...Bxg4
        • 2.Qe4#
      • 1...dxe3
        • 2.Qe4#
      • 1...fxe3
        • 2.Qe4#
      • 1...Bf3
        • 2.Qf5#
      • 1...d3
        • 2.Qxc4#
      • 1...Bd3!
  • Keys
    • 1.Sxc4!
      • 1...Kd5
        • 2.Sf6#
      • 1...Kf5
        • 2.Sd6#
      • 1...d3
        • 2.Sce3#
      • 1...f3
        • 2.Sge3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB(B),XP(c)
    • P(d);S_CUTB(a)::QAB(B),XP(c)
  • Tries
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);P_SPINB(a),XS(F)::QAR2(B)
        • P(d);XS(C)::QAR2(B)
        • P(e);XS(C)::QAR2(B)
        • B(a);::QAB1(B)
        • P(d);S_CUTB(a)::QAB(B),XP(c)
      • Refutation
        • B(a);
  • Actual
    • S(C);P_PINB(a),XP(c)
    • Vars
      • K(g);N_SPINB(a),N_SPINS(f),S_FLIGHT::S(F)
      • K(g);N_SPINB(a),N_SPINS(f),S_FLIGHT::S(C)
      • P(d);::QAB(B)+S(C)
      • P(e);::B(D)+S(F)
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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).