MESON Chess Problem Database

Problem Display
PID: 22732 (r3k3/p5Qn/P6B/2p5/8/2RN1P2/4B3/3KR3 w q - 0 1)

Dyachuk, Vasyl Vasilovich

L'Italia Scacchistica, 1998

r3k3/p5Qn/P6B/2p5/8/2RN1P2/4B3/3KR3

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Bf1#
    • 1...0-0-0
      • 2.Qb7#
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Qd7#
      • 1...Rd8+
        • 2.Bd3#
      • 1...0-0-0+
        • 2.Sd7#
      • 1...Kd8
        • 2.Qd7#
      • 1...Sf6
        • 2.Qf8#
      • 1...Sf8
        • 2.Qxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(d);P_PINS(E),SBLOCK::R(B)+B(C)
    • K(e);0-0-0,OGATEB,P_PINS(E),P_SPINP(a)::QAB1(I)
  • Actual
    • S(E);XP(a)
    • Threat
      • QAB1(I)
    • Vars
      • R(d);CHECK,SBLOCK::R(B)+B(C)
      • K(e);0-0-0,CHECK::R(D)+S(E)
      • K(e);P-FLIGHT::QAR1(I)
      • S(c);N_GUARD::QAR1(I)
      • S(c);N_GUARD::QAR1(I),XS(c)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).