MESON Chess Problem Database

Problem Display
PID: 21378 (b1Q5/2Nn4/1p2p3/2n1p1K1/2PbkpR1/q6R/r2pBp2/r4N2 w - - 0 1)

Mansfield, Comins

7th Prize, L'Italia Scacchistica, 1918

b1Q5/2Nn4/1p2p3/2n1p1K1/2PbkpR1/q6R/r2pBp2/r4N2

#2

8 + 14

58 Tijdschrift vd NSB 1931
3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Bd3#
    • 1...Sd3
      • 2.Bf3#
    • 1...Sa4
      • 2.Qxa8#
    • 1...Sa6
      • 2.Qxa8#
  • Tries
    • 1.Qxa8+?
      • 1...Sb7
        • 2.Qxb7#
      • 1...Qxa8!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sd6#
      • 1...Bb2
        • 2.Sxd2#
      • 1...Bc3
        • 2.Re3#
      • 1...Be3
        • 2.Sg3#
      • 1...Sb3
        • 2.Bd3#
      • 1...Sd3
        • 2.Bf3#
      • 1...Sa4
        • 2.Qxa8#
      • 1...Sa6
        • 2.Qxa8#
      • 1...Sb7
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(i);N_GUARD,S_CUTQ(e)::B(B)
    • S(i);SBLOCK,S_CUTQ(e)::B(B)
    • S(i);N_GUARD,S_CUTQ(e)::QAB(H),XB(n)
  • Tries
    • Try
      • Q(H);CHECK,XB(n)
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB(H),XS(i)
      • Refutation
        • Q(e);XQ(H)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • B(f);S_CUTR(b)::S(A),XP(c)
      • B(f);N_GUARD,S_CUTQ(e)::R1(C)
      • B(f);SBLOCK,S_CUTQ(e)::S(A)
      • S(i);N_GUARD,S_CUTQ(e)::B(B)
      • S(i);SBLOCK,S_CUTQ(e)::B(B)
      • S(i);N_GUARD,S_CUTQ(e)::QAB(H),XB(n)
      • S(i);S_CUTB(n)::QAB(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).