MESON Chess Problem Database

Problem Display
PID: 133182 (4RKn1/1B1pPp2/P3k3/1N4pN/QP1P2P1/1P2p3/5r2/2B2R2 w - - 0 1)

Dragoescu, Radu

1st Prize, Nice-Matin, 1979

4RKn1/1B1pPp2/P3k3/1N4pN/QP1P2P1/1P2p3/5r2/2B2R2

#2

14 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Sg7#
    • 1...Rb2
      • 2.Sg7#
    • 1...Rc2
      • 2.Sg7#
    • 1...Rd2
      • 2.Sg7#
    • 1...Re2
      • 2.Sg7#
    • 1...Rg2
      • 2.Sg7#
    • 1...Rh2
      • 2.Sg7#
    • 1...Rf5
      • 2.gxf5#
    • 1...Rf6
      • 2.Sg7#
    • 1...Sf6
      • 2.Sg7#
    • 1...Sxe7
      • 2.Rxe7#
    • 1...d5
      • 2.Bc8#
    • 1...d6
      • 2.Sc7#
    • 1...f6
      • 2.Sg7#
  • Tries
    • 1.Rxf2?
      • threat
        • 2.Sg7#
      • 1...d5
        • 2.Bc8#
      • 1...d6
        • 2.Sc7#
      • 1...f5
        • 2.gxf5#
      • 1...exf2!
    • 1.Qa1?
      • threat
        • 2.d5#
      • 1...d5
        • 2.Bc8#
      • 1...Rb2
        • 2.Sg7#
      • 1...Rd2
        • 2.Sg7#
      • 1...Rf5
        • 2.gxf5#
      • 1...Sf6
        • 2.Sg7#
      • 1...d6!
  • Keys
    • 1.Bb2!
      • threat
        • 2.d5#
      • 1...Rxb2
        • 2.Sg7#
      • 1...d5
        • 2.Bc8#
      • 1...d6
        • 2.Sc7#
      • 1...Rd2
        • 2.Sg7#
      • 1...Rf5
        • 2.gxf5#
      • 1...Sf6
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • R(a);::S(I)
    • R(a);OGATE::P(G),XR(a)
    • S(g);SBLOCK::S(I)
    • S(g);OGATE,P_SPINS(g),XP(L)::R1(M),XS(g)
    • P(e);OGATEB,SBLOCK::B(K)
    • P(e);SBLOCK::S(H)
    • P(f);SBLOCK::S(I)
  • Tries
    • Try
      • R(B);XR(a)
      • Threat
        • S(I)
      • Vars
        • P(e);OGATEB,SBLOCK::B(K)
        • P(e);SBLOCK::S(H)
        • P(f);OGATE::P(G),XP(f)
      • Refutation
        • P(b);XR(B)
    • Try
      • Q(D);
      • Threat
        • P(F)
      • Vars
        • P(e);OGATEB,SBLOCK::B(K)
        • R(a);::S(I)
        • R(a);OGATE::P(G),XR(a)
        • S(g);SBLOCK::S(I)
      • Refutation
        • P(e);
  • Actual
    • B(A);
    • Threat
      • P(F)
    • Vars
      • R(a);XB(A)::S(I)
      • P(e);OGATEB,SBLOCK::B(K)
      • P(e);SBLOCK::S(H)
      • R(a);::S(I)
      • R(a);OGATE::P(G),XR(a)
      • S(g);SBLOCK::S(I)
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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).