MESON Chess Problem Database

Problem Display
PID: 63626 (N7/1Q3p1K/p3P3/2kB1Pp1/3N1qR1/8/5B1b/8 w - - 0 1)

Ellerman, Arnoldo

1001 Problemas, 1945

N7/1Q3p1K/p3P3/2kB1Pp1/3N1qR1/8/5B1b/8

#2

9 + 6

81 Chess 1946

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sc2#
      • 2.Se2#
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sb5#
    • 1...Qc7
      • 2.Sb5#
    • 1...Qb8
      • 2.Sb5#
    • 1...Qxf5+
      • 2.Sxf5#
  • Tries
    • 1.Sc2+?
      • 1...Qe3
        • 2.Qc6#
      • 1...Qxf2
        • 2.Qc6#
      • 1...Qd4
        • 2.Qc6#
      • 1...Kd6!
    • 1.Sf3+?
      • 1...Kd6
        • 2.Qd7#
      • 1...Qe3
        • 2.Qc6#
      • 1...Qd4!
    • 1.Bb3?
      • threat
        • 2.Qb6#
      • 1...Qxf5+
        • 2.Sxf5#
      • 1...Kd6
        • 2.Qc7#
      • 1...Qc7
        • 2.Sb5#
      • 1...Qb8
        • 2.Sb5#
      • 1...Qd6!
  • Keys
    • 1.Ba2!
      • threat
        • 2.Qb6#
      • 1...Qxf5+
        • 2.Sxf5#
      • 1...Kd6
        • 2.Qc7#
      • 1...Qd6
        • 2.Sb3#
      • 1...Qc7
        • 2.Sb5#
      • 1...Qb8
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_GUARD::B(A)+S(B)
    • Q(b);CHECK,XP(E)::B(A)+S(B),XQ(b)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • Q(b);P_SPINQ(b)::QAR1(G)
        • Q(b);XB(A)::QAR1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(G)
        • Q(b);P_SPINQ(b)::QAR1(G)
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • B(D);
      • Threat
        • QAB1(G)
      • Vars
        • Q(b);CHECK,XP(E)::B(A)+S(B),XQ(b)
        • K(c);S_FLIGHT::QAB1(G)
        • Q(b);N_GUARD::B(A)+S(B)
      • Refutation
        • Q(b);
  • Actual
    • B(D);
    • Threat
      • QAB1(G)
    • Vars
      • Q(b);CHECK,XP(E)::B(A)+S(B),XQ(b)
      • K(c);S_FLIGHT::QAB1(G)
      • Q(b);SBLOCK::B(A)+S(B),DCHECK
      • Q(b);N_GUARD::B(A)+S(B)
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