MESON Chess Problem Database

Problem Display
PID: 213680 (kbN5/r2B4/8/8/8/8/8/3Q3K w - - 0 1)

Uhler, Ekkehard

Badische Neueste Nachrichten, 1981

kbN5/r2B4/8/8/8/8/8/3Q3K

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Bc6#
    • 1...Ra2
      • 2.Bc6#
      • 2.Qf3#
      • 2.Qd5#
    • 1...Ra3
      • 2.Bc6#
      • 2.Qd5#
    • 1...Ra4
      • 2.Bc6#
      • 2.Qd5#
    • 1...Ra5
      • 2.Bc6#
  • Keys
    • 1.Qa4!
      • threat
        • 2.Bc6#
      • 1...Kb7
        • 2.Qc6#
      • 1...Bh2
        • 2.Qxa7#
      • 1...Bg3
        • 2.Qxa7#
      • 1...Bf4
        • 2.Qxa7#
      • 1...Be5
        • 2.Qxa7#
      • 1...Bd6
        • 2.Qxa7#
      • 1...Bc7
        • 2.Qxa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD,P_PINQ(A)::B(C)
    • R(a);N_GUARD::B(C)
  • Actual
    • Q(A);P_PINR(a)
    • Threat
      • B(C)
    • Vars
      • K(b);N_SPINR(a),S_FLIGHT::QAB1(A)
      • B(c);N_GUARD::QAR1(A),XR(a)
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