MESON Chess Problem Database

Problem Display
PID: 151243 (8/5k1b/6pR/2Q5/6K1/8/1B6/8 w - - 0 1)

Lincoln, Robert A

The Problemist Supplement, 2013

8/5k1b/6pR/2Q5/6K1/8/1B6/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Rxh7+?
      • 1...Ke6
        • 2.Re7#
        • 2.Qe5#
        • 2.Qc6#
      • 1...Ke8
        • 2.Qe7#
        • 2.Qc8#
      • 1...Kg8!
    • 1.Qe7+?
      • 1...Kg8
        • 2.Qg7#
        • 2.Qe8#
      • 1...Kxe7!
  • Keys
    • 1.Ba3!
      • 1...Ke6
        • 2.Qf5#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kg7
        • 2.Qf8#
      • 1...Ke8
        • 2.Qe7#
      • 1...Kg8
        • 2.Qf8#
      • 1...Bg8
        • 2.Qe7#
      • 1...g5
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK,XB(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(C)
  • Actual
    • B(A);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB1(C)
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(C)
      • K(b);P-FLIGHT::QAB1(C)
      • K(b);S_FLIGHT::QAR1(C)
      • B(c);SBLOCK::QAR1(C)
      • P(a);::QAR1(C)
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