MESON Chess Problem Database

Problem Display
PID: 39232 (2K1N3/1p6/k7/b2R4/8/8/8/6Q1 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

2K1N3/1p6/k7/b2R4/8/8/8/6Q1

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Sc7#
    • 1...Bd2
      • 2.Sc7#
    • 1...Bc3
      • 2.Sc7#
    • 1...Bb4
      • 2.Sc7#
    • 1...Bc7
      • 2.Sxc7#
  • Tries
    • 1.Qg7?
      • threat
        • 2.Qxb7#
      • 1...Kb6
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...b6
        • 2.Qb7#
      • 1...b5
        • 2.Qb7#
      • 1...Bc7!
  • Keys
    • 1.Kb8!
      • threat
        • 2.Qa7#
      • 1...Bc7+
        • 2.Sxc7#
      • 1...Bb6
        • 2.Qf1#
      • 1...b6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::S(D)
    • B(a);N_GUARD::S(D),XB(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(c)
        • K(b);P-FLIGHT,P_SPINP(c)::QAR1(A),XP(c)
        • P(c);::QAB1(A)
      • Refutation
        • B(a);
  • Actual
    • K(C);P-FLIGHT
    • Threat
      • QAR1(A)
    • Vars
      • B(a);CHECK,N_GUARD::S(D),XB(a)
      • B(a);SBLOCK,S_CUTP(c)::QAB(A)
      • P(c);S_CUTB(a)::S(D)
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