MESON Chess Problem Database

Problem Display
PID: 208717 (8/8/4Q3/2k5/K6B/4q3/1P6/2N5 w - - 0 1)

Bethge, Friedrich

Deutsche Schachblatter, 1952

8/8/4Q3/2k5/K6B/4q3/1P6/2N5

#2

5 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sb3#
    • 1...Qd2
      • 2.Sb3#
    • 1...Qf2
      • 2.Sb3#
      • 2.Bxf2#
    • 1...Qg5
      • 2.Sb3#
    • 1...Qh6
      • 2.Sb3#
    • 1...Qe1
      • 2.Sb3#
    • 1...Qe2
      • 2.Sb3#
    • 1...Qb3+
      • 2.Sxb3#
    • 1...Qe5
      • 2.Sb3#
  • Keys
    • 1.Bf2!
      • threat
        • 2.Sb3#
        • 2.Bxe3#
      • 1...Qd4+
        • 2.b4#
      • 1...Kd4
        • 2.Bxe3#
      • 1...Qxf2
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::S(A)
    • Q(a);CHECK,N_GUARD::S(A),XQ(a)
  • Actual
    • B(D);P_PINQ(a)
    • Threat
      • DUALS(2)
    • Vars
      • Q(a);CHECK::P(B)
      • K(b);S_FLIGHT::B(D),XQ(a)
      • Q(a);N_SPINQ(a),XB(D)::S(A)
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