MESON Chess Problem Database

Problem Display
PID: 197460 (Kn3B2/8/8/3k4/p3R1P1/8/4P3/1Q4b1 w - - 0 1)

Hannelius, Jan Ingvar

Suomen Shakki, 1986

Kn3B2/8/8/3k4/p3R1P1/8/4P3/1Q4b1

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qb7#
    • 1...Sa6
      • 2.Qb7#
    • 1...Sd7
      • 2.Qb7#
  • Tries
    • 1.Re3?
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
        • 2.Qe4#
      • 1...Kc6
        • 2.Qb7#
      • 1...Bxe3!
    • 1.Rxa4?
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qf5#
      • 1...Bd4!
    • 1.Rc4?
      • threat
        • 2.Qe4#
      • 1...Kxc4
        • 2.Qd3#
      • 1...Ke5
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Bd4!
    • 1.Rf4?
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
        • 2.Qf5#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qf5#
      • 1...Bd4!
    • 1.Re8?
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kc6
        • 2.Qb7#
      • 1...Bd4!
  • Keys
    • 1.Re6!
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kxe6
        • 2.Qf5#
      • 1...Bd4
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • K(c);S_FLIGHT::QAB1(A)
    • S(d);N_GUARD::QAB(A)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);XR(C)
    • Try
      • R(C);XP(b)
      • Threat
        • QAB1(A)
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);S_FLIGHT,XR(C)::QAB1(A)
        • K(c);P-FLIGHT::QAR1(A)
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • B(a);
  • Actual
    • R(C);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);S_FLIGHT::QAB1(A)
      • K(c);P-FLIGHT::QAR1(A)
      • K(c);S_FLIGHT,XR(C)::QAB1(A)
      • B(a);SBLOCK::QAB(A)
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