MESON Chess Problem Database

Problem Display
PID: 271209 (8/5pQ1/7p/4B2K/1p2N3/1P2p3/8/1rkB3R w - - 0 1)

Bonner Feast, Frederick

Sunday Referee, 1932

(First published on Sun Oct 9 1932)

8/5pQ1/7p/4B2K/1p2N3/1P2p3/8/1rkB3R

#2

7 + 6

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Bxb3#
    • 1...e2
      • 2.Bf4#
      • 2.Qxh6#
    • 1...f5
      • 2.Qc7#
    • 1...f6
      • 2.Qc7#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Bc2#
        • 2.Bf3#
        • 2.Bg4#
        • 2.Qc2#
      • 1...Rb2
        • 2.Bc2#
        • 2.Bf3#
        • 2.Bg4#
        • 2.Qxb2#
      • 1...e2!
  • Keys
    • 1.Ba1!
      • 1...Rxa1
        • 2.Qxa1#
      • 1...Rxb3
        • 2.Bxb3#
      • 1...Rb2
        • 2.Qxb2#
      • 1...e2
        • 2.Qxh6#
      • 1...f5
        • 2.Qc7#
      • 1...f6
        • 2.Qc7#

This is after

After Densmore.

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE,XP(C)::R(B)+B(A),XR(a)
    • P(f);OGATE::QAR(G)
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(4)
      • Refutation
        • P(c);
  • Actual
    • B(E);
    • Vars
      • R(a);OGATE,XB(E)::QAR2(G),XR(a)
      • R(a);OGATE,XP(C)::R(B)+B(A),XR(a)
      • R(a);N_GUARD::QAB1(G),XR(a)
      • P(c);OGATEB::QAB(G),XP(e)
      • P(f);OGATE::QAR(G)
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