MESON Chess Problem Database

Problem Display
PID: 65843 (8/3p4/Kp1r1p2/1P1k4/R2p2p1/1R6/B2P3B/r1b1Q3 w - - 0 1)

Kozdon, Baldur

Comm., Sinfonie Scacchistiche, 1969

8/3p4/Kp1r1p2/1P1k4/R2p2p1/1R6/B2P3B/r1b1Q3

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Rb1+?
      • 1...Kc5
        • 2.Qxc1#
      • 1...Rxa2!
    • 1.Rb2+?
      • 1...Kc5
        • 2.Rc2#
      • 1...Rxa2!
    • 1.Rf3+?
      • 1...Rxa2
        • 2.Rf5#
      • 1...Kc5!
    • 1.Qf1?
      • threat
        • 2.Qf5#
      • 1...Ke4
        • 2.Re3#
      • 1...Kc5
        • 2.Qc4#
      • 1...Ke6
        • 2.Re3#
      • 1...f5
        • 2.Qxf5#
      • 1...Re6!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qf5#
      • 1...Ke4
        • 2.Re3#
      • 1...Kc5
        • 2.Rc3#
      • 1...Ke6
        • 2.Re3#
      • 1...Re6
        • 2.Qxd4#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(h);N_GUARD::QAR1(A)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR(A),XB(b)
      • Refutation
        • R(a);P_PINR(F),XB(B)
    • Try
      • R(E);CHECK
      • Vars
        • K(e);P-FLIGHT::R(E)
      • Refutation
        • R(a);P_PINR(F),XB(B)
    • Try
      • R(E);CHECK
      • Vars
        • R(a);P_PINR(F),XB(B)::R(E)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT::R1(E)
        • K(e);P-FLIGHT::QAR1(A)
        • K(e);S_FLIGHT::B(B)+R(E),DCHECK
        • P(h);::QAR2(A),XP(h)
      • Refutation
        • R(g);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(e);P_SPINP(c),S_FLIGHT::R1(E)
      • K(e);P-FLIGHT,P_SPINP(c)::R(E)
      • K(e);S_FLIGHT::B(B)+R(E),DCHECK
      • R(g);SBLOCK::QAR1(A),XP(c)
      • P(h);::QAR2(A),XP(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).