MESON Chess Problem Database

Problem Display
PID: 27128 (K6n/3Nn3/p6p/5k2/4N2r/2P2b1P/B7/1QB2RRq w - - 0 1)

Dombrovskis, Alfreds A

1st HM., USSR Team Championship, 1947

K6n/3Nn3/p6p/5k2/4N2r/2P2b1P/B7/1QB2RRq

#2

10 + 8

14752 Soviet Chess Compositions (1945-1947) 1949
2988 Izbrannie Kompozitsi 1985

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Sg3#
      • 2.Sd6#
    • 1...h5
      • 2.Rg5#
  • Tries
    • 1.Bd5?
      • threat
        • 2.Sg3#
        • 2.Sd6#
      • 1...Qxh3
        • 2.Sd6#
      • 1...Rxh3
        • 2.Sec5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sef6#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Rf4
        • 2.Sd6#
      • 1...Sxd5!
    • 1.Rxf3+?
      • 1...Rf4
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sec5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sef6#
        • 2.Rxf4#
      • 1...Qxf3!
    • 1.Qb3?
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Bb1#
        • 2.Qc2#
        • 2.Qb1#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Rxe4!
    • 1.Qb5+?
      • 1...Kxe4
        • 2.Sf6#
        • 2.Bb1#
        • 2.Qb1#
      • 1...Sd5
        • 2.Qxd5#
      • 1...axb5!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Qb1#
      • 1...Rxe4
        • 2.Qf6#
      • 1...Sd5
        • 2.Sg3#
      • 1...Sc6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(f);N_GUARD::R1(D)
  • Tries
    • Try
      • B(E);N_SPINS(H)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);XP(G)::QAB(A)+S(H),DCHECK
        • R(c);OGATE,P_SPINR(c),XS(H)::QAB1(A),XR(c)
        • R(c);N_SPINB(b)::QAB(A)+S(H),DCHECK
      • Refutation
        • S(g);XB(E)
    • Try
      • R(C);CHECK,N_SPINS(H),XB(b)
      • Refutation
        • Q(a);P_PINS(H),XR(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(g);N_GUARD,N_PINS(H)::QAR2(A),XS(g)
      • Refutation
        • R(c);XS(H)
    • Try
      • Q(A);CHECK
      • Vars
        • S(g);N_GUARD,N_PINS(H),P_SPINS(g)::QAR2(A),XS(g)
      • Refutation
        • P(e);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(d);N_SPINB(b),OGATEB,S_FLIGHT,XS(H)::QAB(A)
      • R(c);SBLOCK,XS(H)::QAR1(A)
      • S(g);N_PINS(H)::S(H)
HTML5 logo

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).