MESON Chess Problem Database

Problem Display
PID: 956 (3R2N1/1K1pBp2/4k3/1Q3p2/1b6/4r3/8/8 w - - 0 1)

Lincoln, Robert A

The Problemist Supplement, 1994

3R2N1/1K1pBp2/4k3/1Q3p2/1b6/4r3/8/8

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qxd7#
    • 1...d5
      • 2.Qxd5#
  • Tries
    • 1.Qc4+?
      • 1...d5
        • 2.Qxd5#
      • 1...Ke5!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Qxd7#
      • 1...Kd6
        • 2.Qc6#
      • 1...Rd3
        • 2.Qe5#
      • 1...Bd6
        • 2.Qc4#
      • 1...d5
        • 2.Qd7#
        • 2.Qxd5#
      • 1...d6
        • 2.Re8#

FEATURES

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