MESON Chess Problem Database

Problem Display
PID: 193312 (bn6/2p1p3/8/RB1k1NN1/K6p/2p1p2r/3B4/3R2Qr w - - 0 1)

Petite, Efren

Suomen Shakki, 1984

bn6/2p1p3/8/RB1k1NN1/K6p/2p1p2r/3B4/3R2Qr

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...exd2
      • 2.Qd4#
    • 1...e2
      • 2.Qd4#
    • 1...c5
      • 2.Bxc3#
    • 1...e5
      • 2.Bxe3#
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke5
        • 2.Bxc3#
      • 1...c5
        • 2.Qe4#
      • 1...Sc6
        • 2.Bc4#
      • 1...e5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(c);OGATE,P_SPINP(c),XB(C)::QAR1(B)
    • P(c);OGATE::QAR1(B)
    • P(g);SBLOCK::R(A)+B(C),XP(b)
    • P(h);SBLOCK::R(A)+B(C),XP(c)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(f);P-FLIGHT::QAB1(B)
      • K(f);P-FLIGHT::B(C),XP(b)
      • P(g);SBLOCK::QAB1(B)
      • S(j);SBLOCK::R(E)+B(F),DCHECK
      • P(h);SBLOCK::QAB1(B)
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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).