MESON Chess Problem Database

Problem Display
PID: 249456 (1Q6/2R5/rq1p4/pkN5/p2R4/P3K3/8/7B w - - 0 1)

Beaubestre, Claude

The Problemist, 1990

1Q6/2R5/rq1p4/pkN5/p2R4/P3K3/8/7B

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...dxc5
      • 2.Bc6#
  • Keys
    • 1.Sd7!
      • threat
        • 2.Bc6#
      • 1...Qxb8
        • 2.Rd5#
      • 1...Ra7
        • 2.Qxb6#
      • 1...Ra8
        • 2.Qxb6#
      • 1...Qb7
        • 2.Rd5#
      • 1...d5
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(f);SBLOCK,XS(E)::B(A)
  • Actual
    • S(E);P_SPINR(D)
    • Threat
      • B(A)
    • Vars
      • Q(e);N_PINR(D),N_SPINQ(e),XQ(G)::R(D)
      • R(d);N_GUARD::QAR1(G),XQ(e)
      • Q(e);N_PINR(D)::R(D)
      • P(f);N_GUARD::R1(F)
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