MESON Chess Problem Database

Problem Display
PID: 234819 (1nQK4/4p3/2p2Pp1/1p3p2/p4pP1/3k1pP1/1PNN4/2BB4 w - - 0 1)

Dolginovich, Nikolai Osipovich

Revista Romana de Sah, 1979

1nQK4/4p3/2p2Pp1/1p3p2/p4pP1/3k1pP1/1PNN4/2BB4

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
    • 1...g5
      • 2.Qxf5#
  • Tries
    • 1.Qxc6?
      • threat
        • 2.Qxf3#
        • 2.Qxb5#
        • 2.Qd5#
        • 2.Qc3#
      • 1...fxg4
        • 2.Qe4#
        • 2.Qxb5#
        • 2.Qd5#
        • 2.Qc3#
      • 1...f2
        • 2.Qf3#
        • 2.Qxb5#
        • 2.Qd5#
        • 2.Qc3#
      • 1...b4
        • 2.Qxf3#
        • 2.Qb5#
        • 2.Qd5#
        • 2.Qc4#
      • 1...e6
        • 2.Qxf3#
        • 2.Qxb5#
        • 2.Qc3#
        • 2.Qd6#
      • 1...Sxc6+!
  • Keys
    • 1.Qe6!
      • 1...fxg3
        • 2.Qe3#
      • 1...fxg4
        • 2.Qe4#
      • 1...exf6
        • 2.Qd6#
      • 1...Sa6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...f2
        • 2.Qe2#
      • 1...a3
        • 2.Qb3#
      • 1...b4
        • 2.Qc4#
      • 1...c5
        • 2.Qd5#
      • 1...g5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(j);N_GUARD::QAR(I)
    • S(j);N_GUARD::QAR(I),XS(j)
    • P(h);N_GUARD::QAB(I),XP(f)
  • Tries
    • Try
      • Q(I);XP(g)
      • Threat
        • DUALS(4)
      • Refutation
        • S(j);CHECK,XQ(I)
  • Actual
    • Q(I);
    • Vars
      • P(d);N_GUARD,XP(F)::QAR1(I)
      • P(f);N_GUARD,XP(G)::QAB1(I)
      • P(i);N_GUARD,XP(H)::QAR(I)
      • S(j);N_GUARD::QAR(I)
      • S(j);N_GUARD::QAR(I),XS(j)
      • P(b);N_GUARD::QAB1(I)
      • P(c);N_GUARD::QAR2(I)
      • P(e);N_GUARD::QAB1(I)
      • P(g);N_GUARD::QAR2(I)
      • P(h);N_GUARD::QAB(I),XP(f)
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