MESON Chess Problem Database

Problem Display
PID: 108237 (4N3/3qn1PK/4r1P1/2R2B1k/r1b1N2P/6B1/1b2P3/3Q4 w - - 0 1)

Chivu, Nicolae

Bucharest Cup, 1983

4N3/3qn1PK/4r1P1/2R2B1k/r1b1N2P/6B1/1b2P3/3Q4

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.exd3#
    • 1...Re5
      • 2.S4f6#
      • 2.S8f6#
    • 1...Bxg7
      • 2.Sxg7#
    • 1...Bxe2
      • 2.Qxe2#
    • 1...Bd3
      • 2.exd3#
    • 1...Bd5
      • 2.e3#
  • Tries
    • 1.e3+?
      • 1...Be2
        • 2.Qxe2#
      • 1...Qxd1!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Bg4#
      • 1...Sxf5
        • 2.Rxf5#
      • 1...Re5
        • 2.Sf6#
      • 1...Bd5
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(f);OGATE::QAB(A)+P(B),XQ(f)
    • B(a);XP(I)::S(K),XB(a)
    • B(c);OGATE,P_SPINB(c),XP(B)::QAB(A),XB(c)
    • B(c);OGATE::QAB(A)+P(B),XB(c)
    • B(c);N_GUARD,S_CUTQ(f)::QAB(A)+P(B)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB(A),XB(c)
      • Refutation
        • Q(f);XQ(A)
  • Actual
    • S(D);
    • Threat
      • R(F)+B(G),DCHECK
    • Vars
      • S(g);OGATE,P_PINP(I),P_SPINS(g),XB(G)::R(F),XS(g)
      • R(e);N_GUARD,S_CUTB(a)::S(K)
      • B(c);N_GUARD,S_CUTQ(f)::QAB(A)+P(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).