MESON Chess Problem Database

Problem Display
PID: 133174 (4Q1nK/4q1p1/2P5/pR2Np2/Rb2kB1p/4Pn1p/2P2pr1/5N1B w - - 0 1)

Dragoescu, Radu

Sinfonie Scacchistiche, 1978

4Q1nK/4q1p1/2P5/pR2Np2/Rb2kB1p/4Pn1p/2P2pr1/5N1B

#2

11 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Sd2#
      • 2.Bxf3#
    • 1...Rh2
      • 2.Sd2#
      • 2.Bxf3#
    • 1...Rg3
      • 2.Sd2#
    • 1...Rg4
      • 2.Sd2#
      • 2.Bxf3#
    • 1...Rg5
      • 2.Sd2#
      • 2.Bxf3#
    • 1...Rg6
      • 2.Sd2#
      • 2.Bxf3#
    • 1...Se1
      • 2.Sd2#
    • 1...Sg1
      • 2.Sd2#
    • 1...Sd2
      • 2.Sxd2#
    • 1...Sh2
      • 2.Sd2#
    • 1...Sxe5
      • 2.Sd2#
    • 1...Sg5
      • 2.Sd2#
  • Tries
    • 1.Sxf3?
      • threat
        • 2.S1d2#
        • 2.S3d2#
        • 2.Sg5#
      • 1...Rg5
        • 2.S1d2#
        • 2.S3d2#
        • 2.Sxg5#
      • 1...g5
        • 2.S1d2#
        • 2.S3d2#
        • 2.Sxg5#
      • 1...Kxf3!
    • 1.Bxg2?
      • threat
        • 2.Sd2#
        • 2.Bxf3#
      • 1...Qxe5
        • 2.Sd2#
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Qc5
        • 2.Bxf3#
      • 1...Qd6
        • 2.Bxf3#
      • 1...Qd8
        • 2.Bxf3#
      • 1...Qd7
        • 2.Bxf3#
      • 1...hxg2!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sd6#
      • 1...Se1
        • 2.Sd2#
        • 2.Sg5#
      • 1...Sg1
        • 2.Sd2#
        • 2.Sg5#
      • 1...Sd2
        • 2.Sxd2#
        • 2.Sg5#
      • 1...Sh2
        • 2.Sd2#
        • 2.Sg5#
      • 1...Sd4
        • 2.Sg5#
      • 1...Se5
        • 2.Sd2#
      • 1...Sg5
        • 2.Sd2#
        • 2.Sxg5#
      • 1...Rg6
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(b);P_SPINS(c)::S(A)
    • S(c);N_GUARD,P_SPINR(b)::S(A)
    • S(c);N_GUARD,P_SPINR(b)::S(A),XS(c)
    • S(c);N_GUARD,P_SPINR(b),XS(H)::S(A)
  • Tries
    • Try
      • S(H);P_PINQ(j),XS(c)
      • Threat
        • DUALS(3)
      • Refutation
        • K(f);N_SPINB(e),N_SPINQ(j),P_SPINR(b),S_FLIGHT,XS(H)
    • Try
      • B(B);P_PINS(c),XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • Q(j);::B(B),XS(c)
      • Refutation
        • P(d);N_SPINS(c),XB(B)
  • Actual
    • S(H);P_PINQ(j)
    • Threat
      • S(H)
    • Vars
      • S(c);N_GUARD,N_SPINB(e),P_SPINR(b)::S(H)
      • S(c);N_GUARD,N_SPINQ(j),P_SPINR(b)::S(A)
      • R(b);P_SPINS(c)::S(A)
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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).