MESON Chess Problem Database

Problem Display
PID: 108875 (K7/1Qpp4/2R3b1/4p1rN/1N1Bkp2/4p3/4B3/6bq w - - 0 1)

Leu, Gheorghe

Bucharest Cup, 1989

K7/1Qpp4/2R3b1/4p1rN/1N1Bkp2/4p3/4B3/6bq

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Rc4#
    • 1...Kf5
      • 2.Rf6#
  • Tries
    • 1.Sf6+?
      • 1...Kxd4
        • 2.Rc4#
        • 2.Qa7#
      • 1...Kf5!
    • 1.Bd3+?
      • 1...Kxd4
        • 2.Rc4#
        • 2.Qa7#
      • 1...Kf3!
    • 1.Rd6+?
      • 1...Kf5
        • 2.Sg7#
        • 2.Rf6#
      • 1...c6!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qd3#
      • 1...Kxd4
        • 2.Qc4#
      • 1...Kf5
        • 2.Qxe5#
      • 1...exd4
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT,XB(C)::R1(E)
    • K(d);S_FLIGHT::R1(E)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(A);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(E);CHECK
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_PINR(E),XB(C)::QAR1(F)
      • K(d);P_PINR(E),P_SPINP(f),S_FLIGHT::QAR1(F),XP(f)
      • P(f);SBLOCK,XB(C)::S(D)
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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).