MESON Chess Problem Database

Problem Display
PID: 178059 (B7/4n3/1rr2R2/1N1np3/4kp2/8/2b1PP2/4Q2K w - - 0 1)

Benberg, ?

Bulletin Ouvrier des Echecs, 1938

B7/4n3/1rr2R2/1N1np3/4kp2/8/2b1PP2/4Q2K

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qb4#
    • 1...Re6
      • 2.Qb4#
  • Tries
    • 1.Qb4+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...Sxb4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.f3#
      • 1...Rxf6
        • 2.Qxc2#
      • 1...Sxf6
        • 2.Sd6#
      • 1...Rc3
        • 2.Sxc3#
      • 1...f3
        • 2.exf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(g);N_GUARD,P_SPINS(d)::QAR(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g),P_SPINS(d)::QAR2(A),XR(g)
      • Refutation
        • S(d);P_SPINR(g),XQ(A)
  • Actual
    • Q(A);
    • Threat
      • P(D)
    • Vars
      • R(g);N_GUARD,P_SPINS(d),XR(F)::QAB(A),XB(a)
      • S(d);P_SPINR(g),XR(F)::S(E)
      • R(g);N_GUARD,P_SPINS(d)::S(E),XR(g)
      • P(c);OGATE::P(C),XP(c)
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