MESON Chess Problem Database

Problem Display
PID: 55270 (1R2b3/1N2B3/P1p5/2P1p2r/pk4BR/b2Q4/1qpP2K1/8 w - - 0 1)

Mansfield, Comins

2nd Comm., Schach-Echo, 1973/II

1R2b3/1N2B3/P1p5/2P1p2r/pk4BR/b2Q4/1qpP2K1/8

#2

10 + 9

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6+?
      • 1...Kxc5
        • 2.Sc4#
        • 2.Se4#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Sxe8#
        • 2.Qc4#
      • 1...Ka5!
    • 1.Be2+?
      • 1...Qd4
        • 2.Qc3#
      • 1...e4
        • 2.Qc4#
      • 1...Rxh4!
    • 1.Qe4+?
      • 1...Kb3
        • 2.Be6#
      • 1...Kb5
        • 2.Be2#
      • 1...Qd4!
    • 1.Qb5+?
      • 1...Kxb5
        • 2.Be2#
      • 1...cxb5!
    • 1.Qc3+?
      • 1...Kb5
        • 2.Be2#
      • 1...Qxc3!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Sa5#
      • 1...Kb3
        • 2.Be6#
      • 1...Kc4
        • 2.Sa5#
      • 1...Kb5
        • 2.Be2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • Q(a);P_SPINQ(a)::QAB1(C)
        • P(f);P_SPINP(f)::QAR1(C)
      • Refutation
        • R(g);XR(E)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);P-FLIGHT::B(D)
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);P-FLIGHT,XQ(C)::B(D)
      • Refutation
        • P(h);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);P-FLIGHT::B(D)
      • Refutation
        • Q(a);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • R(J)+S(H)
    • Vars
      • K(e);P-FLIGHT::B(D)
      • K(e);P-FLIGHT::S(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).