MESON Chess Problem Database

Problem Display
PID: 87936 (6BN/8/8/8/6k1/2N5/3Q4/3KB3 w - - 0 1)

van Dijk, Nils Gustav Gerard

The Problemist, 1968

6BN/8/8/8/6k1/2N5/3Q4/3KB3

#2

6 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kh3
      • 2.Be6#
  • Tries
    • 1.Bd5?
      • 1...Kh3
        • 2.Be6#
        • 2.Qg2#
      • 1...Kh5
        • 2.Bf3#
      • 1...Kf5!
    • 1.Be6+?
      • 1...Kf3
        • 2.Qf2#
      • 1...Kh5!
    • 1.Bf7?
      • 1...Kf3
        • 2.Bh5#
      • 1...Kh3
        • 2.Be6#
      • 1...Kf5!
    • 1.Qf4+?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kh5
        • 2.Bf7#
        • 2.Qh4#
      • 1...Kxf4!
    • 1.Qg5+?
      • 1...Kf3
        • 2.Bd5#
        • 2.Qg3#
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxg5!
    • 1.Qf2?
      • 1...Kh3
        • 2.Be6#
        • 2.Qg3#
      • 1...Kh5
        • 2.Qh4#
      • 1...Kg5!
  • Keys
    • 1.Sd5!
      • 1...Kf3
        • 2.Qe2#
      • 1...Kh3
        • 2.Be6#
      • 1...Kf5
        • 2.Qf4#
      • 1...Kh5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(E)
  • Tries
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);S_FLIGHT::B(E)
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::S(D)
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