MESON Chess Problem Database

Problem Display
PID: 234751 (k1K5/b7/8/5p2/8/4R3/8/Qb6 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2014

k1K5/b7/8/5p2/8/4R3/8/Qb6

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qxb1?
      • threat
        • 2.Qh1#
        • 2.Qb7#
      • 1...Bxe3
        • 2.Qb7#
        • 2.Qb8#
      • 1...Bd4
        • 2.Qb7#
        • 2.Qb8#
      • 1...Bc5
        • 2.Qb7#
        • 2.Qb8#
      • 1...Bb8
        • 2.Qb7#
        • 2.Qxb8#
      • 1...f4
        • 2.Qe4#
        • 2.Qb7#
      • 1...Bb6!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Rb8#
      • 1...Ba2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);N_PINB(c),XB(a)
      • Threat
        • DUALS(2)
      • Refutation
        • B(c);
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • B(a);N_SPINB(c),OGATE::QAB(A)
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