MESON Chess Problem Database

Problem Display
PID: 57204 (8/2n2B2/1b6/r5p1/p3k1P1/4p1P1/K3N3/Q3N2b w - - 0 1)

Ellerman, Arnoldo

2nd Highly Comm., Brisbane Courier, 1918

8/2n2B2/1b6/r5p1/p3k1P1/4p1P1/K3N3/Q3N2b

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qd4#
    • 1...Re5
      • 2.Qb1#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Sd5
      • 2.Bg6#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Sc3#
      • 1...Rc5
        • 2.Qd4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sb5
        • 2.Qe7#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sd5
        • 2.Bg6#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Re5!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Sc3#
      • 1...Rc5
        • 2.Qd4#
      • 1...Re5
        • 2.Qxh1#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sb5
        • 2.Qe8#
      • 1...Sd5
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(e);S_CUTB(g)::QAR1(A)
    • R(e);SBLOCK::QAB(A)
    • B(g);N_GUARD::QAR1(A),XB(g)
    • S(h);SBLOCK,S_CUTR(e)::B(G)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(D)
      • Vars
        • R(e);S_CUTB(g)::QAR1(A)
        • B(g);N_GUARD::QAR1(A),XB(g)
      • Refutation
        • R(e);
  • Actual
    • Q(A);
    • Threat
      • S(D)
    • Vars
      • R(e);S_CUTB(g)::QAR1(A)
      • R(e);SBLOCK::QAB(A),XB(a)
      • B(g);N_GUARD::QAR1(A),XB(g)
      • S(h);N_GUARD,S_CUTR(e)::QAR(A)
      • S(h);SBLOCK,S_CUTR(e)::B(G)
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Developed and maintained by Brian Stephenson.
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