MESON Chess Problem Database

Problem Display
PID: 107998 (5bB1/Bbr4n/1p2R1n1/1p1Pp3/1Ppk2N1/5Q2/1N6/5K2 w - - 0 1)

Dragoescu, Radu

Bucharest Cup, 1985

5bB1/Bbr4n/1p2R1n1/1p1Pp3/1Ppk2N1/5Q2/1N6/5K2

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re7
      • 2.Bxb6#
    • 1...Bxd5
      • 2.Qe3#
    • 1...c3
      • 2.Qd3#
    • 1...e4
      • 2.Rxe4#
  • Tries
    • 1.Rxe5?
      • threat
        • 2.Re4#
        • 2.Qe3#
      • 1...Bxd5
        • 2.Rxd5#
        • 2.Qe3#
      • 1...Bxb4
        • 2.Qe3#
      • 1...Sxe5
        • 2.Qe3#
      • 1...Re7
        • 2.Bxb6#
        • 2.Qe3#
      • 1...Bh6
        • 2.Re4#
      • 1...Sg5
        • 2.Qe3#
      • 1...Sf6
        • 2.Qe3#
      • 1...Rf7!
    • 1.Rc6?
      • threat
        • 2.Qe3#
      • 1...Bh6
        • 2.Bxb6#
      • 1...Rf7!
    • 1.Rd6?
      • threat
        • 2.Qe3#
      • 1...Rf7
        • 2.Bxb6#
      • 1...Bh6!
  • Keys
    • 1.Rxb6!
      • threat
        • 2.Qe3#
      • 1...Rf7
        • 2.Rd6#
      • 1...Bh6
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(h);N_GUARD,S_CUTB(j)::B(H),XP(e)
    • B(g);SBLOCK,XP(F)::QAB1(C)
    • P(a);N_GUARD::QAR1(C)
    • P(d);OGATE::R1(G),XP(d)
  • Tries
    • Try
      • R(G);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • B(j);XP(D)::QAB1(C)
        • S(f);XR(G)::QAB1(C)
        • B(j);::R1(G)
        • S(i);::QAB1(C)
      • Refutation
        • R(h);P_PINQ(C)
    • Try
      • R(G);
      • Threat
        • QAB1(C)
      • Vars
        • B(j);N_GUARD::B(H),XP(e)
      • Refutation
        • R(h);P_PINQ(C)
    • Try
      • R(G);
      • Threat
        • QAB1(C)
      • Vars
        • R(h);N_GUARD,P_PINQ(C)::B(H),XP(e)
      • Refutation
        • B(j);
  • Actual
    • R(G);XP(e)
    • Threat
      • QAB1(C)
    • Vars
      • R(h);N_GUARD,P_PINQ(C)::B(H)+R(G)
      • B(j);N_GUARD::B(H)+R(G)
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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).