MESON Chess Problem Database

Problem Display
PID: 23062 (8/2K5/p7/1p6/k7/2Q5/8/5B2 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/2K5/p7/1p6/k7/2Q5/8/5B2

#2

3 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kb6?
      • 1...a5
        • 2.Bxb5#
      • 1...b4!
    • 1.Kc6?
      • 1...a5
        • 2.Bxb5#
      • 1...b4!
    • 1.Bc4?
      • 1...b4
        • 2.Qa1#
      • 1...a5
        • 2.Qb3#
      • 1...bxc4!
    • 1.Qb3+?
      • 1...Ka5
        • 2.Qa3#
      • 1...Kxb3!
  • Keys
    • 1.Qb2!
      • 1...Ka5
        • 2.Qa3#
      • 1...a5
        • 2.Bxb5#
      • 1...b4
        • 2.Qa2#

FEATURES

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