MESON Chess Problem Database

Problem Display
PID: 136070 (4b1n1/1N1Bkn1N/4P3/2K5/4R3/8/Q7/8 w - - 0 1)

Ancin, Andrej

L'Italia Scacchistica, 1975

4b1n1/1N1Bkn1N/4P3/2K5/4R3/8/Q7/8

#2

7 + 4

14649 Andrej Ancin - Chess Compositions 2008
15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Qd5?
      • threat
        • 2.exf7#
      • 1...Bxd7
        • 2.Qxd7#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Se5
        • 2.Qd6#
      • 1...Sg5
        • 2.Qd6#
      • 1...Sfh6
        • 2.Qd6#
      • 1...Sd8
        • 2.Qd6#
      • 1...Sh8
        • 2.Qd6#
      • 1...Sf6!
    • 1.Qa8?
      • threat
        • 2.Qxe8#
      • 1...Bxd7
        • 2.Qf8#
      • 1...Sd6
        • 2.Qd8#
      • 1...Sd8
        • 2.Qxd8#
      • 1...Sf6!
  • Keys
    • 1.Qf2!
      • 1...Bxd7
        • 2.Qxf7#
      • 1...Sd6
        • 2.Qf8#
      • 1...Se5
        • 2.Qf8#
      • 1...Sg5
        • 2.Qf8#
      • 1...Sfh6
        • 2.Qf8#
      • 1...Sd8
        • 2.Qf8#
      • 1...Sh8
        • 2.Qf8#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sgh6
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • R(B)+P(D),XS(b)
      • Vars
        • B(c);OGATE,XB(F)::QAR1(A),XB(c)
        • S(b);N_GUARD::QAB1(A),XS(b)
        • S(b);N_GUARD::QAB1(A)
      • Refutation
        • S(d);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XB(c)
      • Vars
        • B(c);OGATE,XB(F)::QAB1(A)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • S(d);
  • Actual
    • Q(A);
    • Vars
      • B(c);N_GUARD,XB(F)::QAR1(A),XS(b)
      • S(b);OGATE::QAB1(A)
      • S(d);N_GUARD::QAB1(A),XS(d)
      • S(d);N_GUARD::QAB1(A)
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