MESON Chess Problem Database

Problem Display
PID: 67764 (2Q3B1/3p1R2/2b1k3/8/8/4K3/8/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2006

2Q3B1/3p1R2/2b1k3/8/8/4K3/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qxd7+?
      • 1...Ke5
        • 2.Rf5#
      • 1...Bxd7!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Rf5#
      • 1...Kd5
        • 2.Rf5#
      • 1...Ke5
        • 2.Rf5#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT::R1(B)
      • Refutation
        • B(a);XQ(C)
  • Actual
    • Q(C);N_PINP(c)
    • Threat
      • B(D)+R(B)
    • Vars
      • K(b);S_FLIGHT::B(D)+R(B),DCHECK
      • K(b);P-FLIGHT::R1(B)
      • P(c);SBLOCK::QAR1(C)
      • P(c);SBLOCK::B(D)+R(B),DCHECK
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