MESON Chess Problem Database

Problem Display
PID: 56314 (Qn6/3kp3/4N1K1/8/8/7B/8/8 w - - 0 1)

Lincoln, Robert A

The Problemist, 2004

Qn6/3kp3/4N1K1/8/8/7B/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qd5+?
      • 1...Ke8
        • 2.Qd8#
      • 1...Kc8!
    • 1.Qb7+?
      • 1...Ke8
        • 2.Qc8#
      • 1...Kd6!
  • Keys
    • 1.Bg2!
      • 1...Kd6
        • 2.Qd5#
      • 1...Kxe6
        • 2.Qd5#
      • 1...Kc8
        • 2.Qb7#
      • 1...Ke8
        • 2.Bc6#
      • 1...Sa6
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(a);P-FLIGHT::QAR1(D)
      • K(a);S_FLIGHT,XS(B)::QAB1(D)
      • K(a);P_SPINS(c),S_FLIGHT::QAB1(D)
      • K(a);P_SPINS(c),S_FLIGHT::B(A)
      • S(c);N_GUARD::QAB1(D)
      • S(c);N_GUARD::QAB1(D),XS(c)
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