MESON Chess Problem Database

Problem Display
PID: 174342 (Q7/4pR2/3pN2N/K1ppkB2/1P4pb/4p3/3Pb3/6B1 w - - 0 1)

Coutinho, Jose Ernesto

Comm., Europa-Rochade, 1984-1985

Q7/4pR2/3pN2N/K1ppkB2/1P4pb/4p3/3Pb3/6B1

#2

9 + 9

1077 Boletim da UBP 1987

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Sxg4#
    • 1...Bd3
      • 2.Sxg4#
    • 1...Bc4
      • 2.Sxg4#
    • 1...Bb5
      • 2.Sxg4#
    • 1...Ba6
      • 2.Sxg4#
    • 1...Be1
      • 2.Qh8#
    • 1...Bf2
      • 2.Qh8#
    • 1...Bg3
      • 2.Qh8#
    • 1...cxb4
      • 2.d4#
    • 1...d4
      • 2.Qe4#
  • Tries
    • 1.Bh2+?
      • 1...Bg3
        • 2.Bxg3#
        • 2.Qh8#
      • 1...g3!
    • 1.Bxe3?
      • threat
        • 2.Bf4#
      • 1...Bg3
        • 2.Qh8#
      • 1...Bg5!
  • Keys
    • 1.bxc5!
      • threat
        • 2.d4#
      • 1...exd2
        • 2.Bd4#
      • 1...dxc5
        • 2.Qb8#
      • 1...Bd3
        • 2.Sxg4#
      • 1...Be1
        • 2.Qh8#
      • 1...d4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • B(a);N_GUARD::S(G),XP(c)
    • B(d);N_GUARD::QAB(I)
    • P(e);N_GUARD,XP(C)::P(B)
    • P(f);OGATE::QAR1(I)
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • B(A);XP(b)
      • Threat
        • B(A)
      • Vars
        • B(d);N_GUARD::QAB(I)
      • Refutation
        • B(d);
  • Actual
    • P(C);XP(e)
    • Threat
      • P(B)
    • Vars
      • P(b);OGATE,XP(B)::B(A)
      • P(h);OGATEB,XP(C)::QAB(I)
      • B(a);N_GUARD::S(G),XP(c)
      • B(d);N_GUARD,P_PINP(B)::QAB(I)
      • P(f);OGATE::QAR1(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).