MESON Chess Problem Database

Problem Display
PID: 70088 (1B2RK2/1p2p3/2k5/4Q3/8/8/8/8 w - - 0 1)

Lincoln, Robert A

2nd HM., Olimpiya dunyasi, 2005

1B2RK2/1p2p3/2k5/4Q3/8/8/8/8

#2

4 + 3

145 StrateGems 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Qd5#
  • Tries
    • 1.Rd8?
      • 1...b5
        • 2.Qc7#
      • 1...b6
        • 2.Qd5#
      • 1...e6
        • 2.Rd6#
      • 1...Kb6!
    • 1.Qc5+?
      • 1...Kd7
        • 2.Qd5#
        • 2.Qc8#
      • 1...Kxc5!
  • Keys
    • 1.Rxe7!
      • 1...Kb6
        • 2.Re6#
      • 1...b5
        • 2.Qd6#
      • 1...b6
        • 2.Rc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAR2(A)
  • Tries
    • Try
      • R(C);
      • Vars
        • P(b);SBLOCK::QAR1(A)
        • P(b);SBLOCK::QAB1(A)
        • P(c);N_GUARD::R1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • R(C);XP(c)
    • Vars
      • K(a);P-FLIGHT::R(C)
      • P(b);SBLOCK::QAR1(A)
      • P(b);SBLOCK::R1(C)
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