MESON Chess Problem Database

Problem Display
PID: 135283 (1Q6/K1p5/4P3/2kP1N2/1N4R1/8/p7/B4b2 w - - 0 1)

Ancin, Andrej

3rd HM., SUV CSZTV, 1959

1Q6/K1p5/4P3/2kP1N2/1N4R1/8/p7/B4b2

#2

8 + 4

14649 Andrej Ancin - Chess Compositions 2008
23 Die Schwalbe 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Bd4#
    • 1...Bb5
      • 2.Qf8#
    • 1...c6
      • 2.Qb6#
  • Tries
    • 1.Rc4+?
      • 1...Bxc4
        • 2.Bd4#
      • 1...Kxc4!
    • 1.Qb7?
      • threat
        • 2.Qc6#
      • 1...Bc4
        • 2.Bd4#
      • 1...c6
        • 2.Qxc6#
        • 2.Qb6#
      • 1...Bb5!
    • 1.Qe8?
      • threat
        • 2.Qc6#
      • 1...c6
        • 2.Qxc6#
      • 1...Bb5
        • 2.Qe7#
        • 2.Qf8#
      • 1...Bc4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qxc7#
      • 1...Kxd6
        • 2.Qf8#
      • 1...cxd6
        • 2.Qb6#
      • 1...Bc4
        • 2.Se4#
      • 1...Bb5
        • 2.Sb7#
      • 1...c6
        • 2.Bd4#

Anticipated by 18784(1958)

This is a version of 103934

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::B(A)
    • B(a);SBLOCK::QAB(H)
    • P(d);N_GUARD::QAB1(H)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • B(a);SBLOCK,XR(C)::B(A)
      • Refutation
        • K(c);P-FLIGHT,XR(C)
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • B(a);SBLOCK::B(A)
      • Refutation
        • B(a);
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • P(d);::QAR1(H),XP(d)
      • Refutation
        • B(a);
  • Actual
    • S(E);
    • Threat
      • QAR2(H),XP(d)
    • Vars
      • K(c);OGATEB,P_SPINP(d),S_FLIGHT,XS(E)::QAB(H)
      • P(d);N_GUARD,XS(E)::QAB1(H)
      • B(a);SBLOCK::S(E)
      • P(d);::B(A)
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