MESON Chess Problem Database

Problem Display
PID: 55073 (b4b2/7r/3p4/8/1KQ2p1r/7N/8/1N1k2BR w - - 0 1)

Lewis, Robert Tony

The Problemist Supplement, 2004

b4b2/7r/3p4/8/1KQ2p1r/7N/8/1N1k2BR

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Bf2#
    • 1...Rb7+
      • 2.Bb6#
    • 1...f3
      • 2.Bf2#
      • 2.Bh2#
      • 2.Be3#
      • 2.Bd4#
      • 2.Bc5#
      • 2.Bb6#
      • 2.Ba7#
    • 1...d5+
      • 2.Bc5#
  • Tries
    • 1.Qe2+?
      • 1...Kc1
        • 2.Be3#
      • 1...Kxe2!
    • 1.Qd3+?
      • 1...Ke1
        • 2.Bf2#
      • 1...Kc1!
    • 1.Qc2+?
      • 1...Ke1
        • 2.Bf2#
      • 1...Kxc2!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qd2#
      • 1...Rb7+
        • 2.Bb6#
      • 1...f3+
        • 2.Bd4#
      • 1...d5+
        • 2.Bc5#
      • 1...Kc1
        • 2.Be3#
      • 1...Ke1
        • 2.Bf2#

This is after 9498

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(C)+B(B),DCHECK
    • R(e);CHECK,S_CUTB(f)::R(C)+B(B)
    • P(d);CHECK,S_CUTB(f)::R(C)+B(B)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P-FLIGHT::R(C)+B(B),DCHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P-FLIGHT::R(C)+B(B),DCHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P-FLIGHT::R(C)+B(B),DCHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • R(e);CHECK,S_CUTB(f)::R(C)+B(B)
      • P(b);CHECK,S_CUTB(f)::R(C)+B(B)
      • P(d);CHECK,S_CUTB(f)::R(C)+B(B)
      • K(a);P-FLIGHT::R(C)+B(B),DCHECK
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