MESON Chess Problem Database

Problem Display
PID: 23190 (2k2K2/2B2Q2/P1r1p3/8/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

2k2K2/2B2Q2/P1r1p3/8/8/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc7
      • 2.Qe8#
  • Tries
    • 1.Ba5?
      • threat
        • 2.Qe8#
        • 2.Qb7#
      • 1...Kb8
        • 2.Qb7#
      • 1...Rxa6
        • 2.Qc7#
      • 1...Rc7
        • 2.Qe8#
        • 2.Qxc7#
      • 1...Rd6
        • 2.Qb7#
        • 2.Qc7#
      • 1...Rb6!
    • 1.Be5?
      • threat
        • 2.Qe8#
      • 1...Kd8
        • 2.Qe8#
      • 1...Rxa6
        • 2.Qc7#
      • 1...Rd6!
    • 1.Bb6?
      • threat
        • 2.Qe8#
        • 2.Qb7#
      • 1...Kb8
        • 2.Qb7#
      • 1...Rc7
        • 2.Qe8#
        • 2.Qxc7#
      • 1...Rd6
        • 2.Qb7#
        • 2.Qc7#
      • 1...Rxb6!
    • 1.Bd6?
      • threat
        • 2.Qe8#
      • 1...Kd8
        • 2.Qe8#
      • 1...Rxa6
        • 2.Qc7#
      • 1...Rxd6!
  • Keys
    • 1.Bb8!
      • threat
        • 2.Qe8#
      • 1...Kxb8
        • 2.Qb7#
      • 1...Kd8
        • 2.Qe8#
      • 1...Rxa6
        • 2.Qc7#
      • 1...Rd6
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK,XB(B)::QAR2(C)
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAR1(C)
        • R(a);N_GUARD,XP(A)::QAR1(C)
      • Refutation
        • R(a);
    • Try
      • B(B);
      • Threat
        • QAR2(C)
      • Vars
        • K(c);P-FLIGHT::QAR1(C)
        • R(a);N_GUARD,XP(A)::QAR1(C)
      • Refutation
        • R(a);
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAR1(C)
      • Refutation
        • R(a);XB(B)
    • Try
      • B(B);
      • Threat
        • QAR2(C)
      • Vars
        • K(c);P-FLIGHT::QAR1(C)
        • R(a);N_GUARD,XP(A)::QAR1(C)
      • Refutation
        • R(a);XB(B)
  • Actual
    • B(B);
    • Threat
      • QAR2(C)
    • Vars
      • K(c);P-FLIGHT,XB(B)::QAR1(C)
      • K(c);P-FLIGHT::QAR1(C)
      • R(a);N_GUARD,XP(A)::QAR1(C)
      • R(a);N_GUARD::QAR1(C)
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