MESON Chess Problem Database

Problem Display
PID: 132276 (3K1B2/2P5/3p4/3k4/8/4Q3/1R6/8 w - - 0 1)

Lincoln, Robert A

4th HM., Rybynsk 7 Dney, 2005

3K1B2/2P5/3p4/3k4/8/4Q3/1R6/8

#2

5 + 2

145 StrateGems 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Bg7?
      • 1...Kc4
        • 2.Qd4#
      • 1...Kc6!
    • 1.Rb5+?
      • 1...Kc6
        • 2.Qb6#
        • 2.Qe8#
      • 1...Kc4!
    • 1.Qe4+?
      • 1...Kc5
        • 2.c8Q#
        • 2.c8R#
      • 1...Kxe4!
    • 1.c8B?
      • 1...Kc6
        • 2.Bb7#
      • 1...Kc4!
  • Keys
    • 1.c8S!
      • 1...Kc4
        • 2.Sb6#
      • 1...Kc6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::P=Q
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • P(C);
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(C);
    • Vars
      • K(a);S_FLIGHT::S(C)
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