MESON Chess Problem Database

Problem Display
PID: 64793 (1K6/8/2k5/4RN2/4NpBB/3Pp3/1P6/6Q1 w - - 0 1)

Sydenham, Colin Peter

The Problemist Supplement, 2006

1K6/8/2k5/4RN2/4NpBB/3Pp3/1P6/6Q1

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Sd4#
    • 1...e2
      • 2.Se7#
  • Tries
    • 1.Bd1?
      • 1...Kb6
        • 2.Qg6#
      • 1...Kd7
        • 2.Ba4#
      • 1...e2
        • 2.Ba4#
      • 1...f3!
    • 1.Bh3?
      • 1...Kb6
        • 2.Qg6#
      • 1...Kd7
        • 2.Sd4#
      • 1...e2
        • 2.Se7#
      • 1...f3!
    • 1.Bh5?
      • 1...Kb6
        • 2.Qg6#
      • 1...Kd7
        • 2.Be8#
      • 1...e2
        • 2.Be8#
      • 1...f3!
    • 1.Rc5+?
      • 1...Kd7
        • 2.Sfd6#
        • 2.Sg7#
      • 1...Kb6!
    • 1.Qxe3?
      • threat
        • 2.Se7#
      • 1...Kd7
        • 2.Sd4#
      • 1...fxe3!
    • 1.Qc1+?
      • 1...Kd7
        • 2.Sxe3#
        • 2.Sfg3#
        • 2.Sd4#
        • 2.Sfd6#
        • 2.Sh6#
        • 2.Sg7#
        • 2.Qc7#
        • 2.Qc8#
      • 1...Kb6!
  • Keys
    • 1.Bf3!
      • 1...Kb6
        • 2.Qg6#
      • 1...Kd7
        • 2.Sc5#
      • 1...e2
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(E)+S(H)
    • P(a);::S(H)
  • Tries
    • Try
      • B(E);
      • Vars
        • K(c);P-FLIGHT,P_SPINP(a)::QAR(A)
        • K(c);S_FLIGHT::B(E)
        • P(a);::B(E)
      • Refutation
        • P(b);
    • Try
      • B(E);
      • Vars
        • K(c);P-FLIGHT,P_SPINP(a)::QAR(A)
        • K(c);S_FLIGHT::B(E)+S(H)
        • P(a);::S(H)
      • Refutation
        • P(b);
    • Try
      • B(E);
      • Vars
        • K(c);P-FLIGHT,P_SPINP(a)::QAR(A)
        • K(c);S_FLIGHT::B(E)
        • P(a);::B(E)
      • Refutation
        • P(b);
    • Try
      • R(G);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);XP(a)
      • Threat
        • S(H)
      • Vars
        • K(c);S_FLIGHT::B(E)+S(H)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • B(E);
    • Vars
      • K(c);P-FLIGHT,P_SPINP(a)::QAR(A)
      • K(c);S_FLIGHT::S(D)
      • P(a);::B(E)+S(D)
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