MESON Chess Problem Database

Problem Display
PID: 39100 (NbqN1B1K/kppp4/P4R2/5R2/8/8/p7/5B1Q w - - 0 1)

Reeves, Alfred Christopher

Die Schwalbe, 1994

NbqN1B1K/kppp4/P4R2/5R2/8/8/p7/5B1Q

#2

9 + 7

56 The Problemist 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd8
      • 2.Qxb7#
    • 1...bxa6
      • 2.Bc5#
    • 1...b5
      • 2.Bc5#
  • Keys
    • 1.axb7!
      • threat
        • 2.Bc5#
        • 2.Ra5#
        • 2.Ra6#
        • 2.bxc8S#
      • 1...Qxb7
        • 2.Qxb7#
      • 1...Qxd8
        • 2.Ra5#
        • 2.Ra6#
      • 1...a1Q
        • 2.Bc5#
        • 2.bxc8S#
      • 1...a1B
        • 2.Bc5#
        • 2.Ra5#
        • 2.bxc8S#
      • 1...a1R
        • 2.Bc5#
        • 2.bxc8S#
      • 1...c5
        • 2.Ra6#
        • 2.bxc8S#
      • 1...c6
        • 2.Bc5#
        • 2.Ra5#
      • 1...d5
        • 2.Bc5#
        • 2.Ra6#
      • 1...d6
        • 2.Ra5#
        • 2.bxc8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD,P_PINB(H),XS(G)::QAR1(B),XP(c)
    • P(c);N_GUARD,XP(D)::B(H)
    • P(c);N_GUARD::B(H)
  • Actual
    • P(D);XP(c)
    • Threat
      • DUALS(4)
    • Vars
      • Q(g);OGATE,XP(D)::QAR1(B),XQ(g)
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