MESON Chess Problem Database

Problem Display
PID: 52662 (b6R/4P2B/3r3k/3p4/1p6/rp3KQ1/8/b7 w - - 0 1)

Lipton, Michael

Correspondence Chess, 1964

b6R/4P2B/3r3k/3p4/1p6/rp3KQ1/8/b7

#2

5 + 8

133 The Problemist Supplement 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kh5
      • 2.Bg6#
    • 1...Rf6+
      • 2.Bf5#
    • 1...Rg6
      • 2.Qxg6#
    • 1...Rd7
      • 2.Qg6#
    • 1...Rd8
      • 2.Qg6#
    • 1...Bf6
      • 2.Qg6#
    • 1...Bg7
      • 2.Qh4#
    • 1...b2+
      • 2.Bd3#
    • 1...d4+
      • 2.Be4#
  • Tries
    • 1.Qf4+?
      • 1...Kg7
        • 2.Qf8#
      • 1...Kh5!
  • Keys
    • 1.e8S!
      • threat
        • 2.Qh4#
      • 1...Rf6+
        • 2.Bf5#
      • 1...b2+
        • 2.Bd3#
      • 1...d4+
        • 2.Be4#
      • 1...Kh5
        • 2.Bg6#
      • 1...Bf6
        • 2.Qg6#

This is after 9498

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • K(g);P-FLIGHT::R(E)+B(D),DCHECK
    • R(f);CHECK,S_CUTB(a)::R(E)+B(D)
    • R(f);N_GUARD::QAR1(B),XR(f)
    • R(f);N_GUARD::QAR1(B)
    • B(a);S_CUTR(f)::QAR1(B)
    • B(a);SBLOCK::QAR2(B)
    • P(c);CHECK,S_CUTB(a)::R(E)+B(D)
    • P(e);CHECK,S_CUTB(a)::R(E)+B(D)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(g);S_FLIGHT::QAB1(B)
      • Refutation
        • K(g);P-FLIGHT
  • Actual
    • P(C);
    • Threat
      • QAR2(B)
    • Vars
      • R(f);CHECK,S_CUTB(a)::R(E)+B(D)
      • P(c);CHECK,S_CUTB(a)::R(E)+B(D)
      • P(e);CHECK,S_CUTB(a)::R(E)+B(D)
      • K(g);P-FLIGHT::R(E)+B(D),DCHECK
      • B(a);S_CUTR(f)::QAR1(B)
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