MESON Chess Problem Database

Problem Display
PID: 65252 (BQ6/1N6/8/Nk6/8/p2K4/8/8 w - - 0 1)

Lincoln, Robert A

2nd HM., Amirov MT, 2004

BQ6/1N6/8/Nk6/8/p2K4/8/8

#2

5 + 2

145 StrateGems 2006

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5+?
      • 1...Kxc5
        • 2.Sb3#
      • 1...Kxa5!
    • 1.Sd6+?
      • 1...Ka4
        • 2.Qb5#
      • 1...Kxa5
        • 2.Qb5#
      • 1...Kc5
        • 2.Sb3#
        • 2.Se4#
      • 1...Ka6!
  • Keys
    • 1.Sb3!
      • threat
        • 2.S7c5#
      • 1...Ka4
        • 2.S7c5#
      • 1...Kb4
        • 2.S7c5#
      • 1...Ka6
        • 2.S7c5#
      • 1...Kb6
        • 2.S7c5#
      • 1...Kc6
        • 2.S7c5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(C)::S(B)
      • Refutation
        • K(b);P-FLIGHT,XS(B)
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • K(b);P-FLIGHT,XS(B)::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAR(E)+S(C)
    • Vars
      • K(b);S_FLIGHT::S(C)
      • K(b);P-FLIGHT::QAR(E)+S(C)
      • K(b);S_FLIGHT::B(D)+S(C)
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