MESON Chess Problem Database

Problem Display
PID: 158568 (3q1r2/8/8/5B2/rR2N3/4nk2/2p1N1p1/2Q1R1K1 w - - 0 1)

Hermanson, Halvar

2nd HM., Israel Ring Ty., 1952/I

3q1r2/8/8/5B2/rR2N3/4nk2/2p1N1p1/2Q1R1K1

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Sd2#
    • 1...Qa5
      • 2.Sd2#
      • 2.Sg5#
    • 1...Qg5
      • 2.Sd2#
      • 2.Sxg5#
    • 1...Qb6
      • 2.Sd2#
      • 2.Sg5#
    • 1...Qf6
      • 2.Sd2#
    • 1...Qc7
      • 2.Sd2#
      • 2.Sg5#
    • 1...Qe7
      • 2.Sd2#
    • 1...Qd1
      • 2.Sg5#
    • 1...Qd2
      • 2.Sxd2#
      • 2.Sg5#
    • 1...Qd3
      • 2.Sg5#
    • 1...Qd4
      • 2.Sg5#
    • 1...Qd5
      • 2.Sg5#
    • 1...Qd6
      • 2.Sg5#
    • 1...Qd7
      • 2.Sg5#
    • 1...Qa8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Qb8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Qc8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Qe8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Rf6
      • 2.Sg5#
    • 1...Sd1
      • 2.Qf4#
    • 1...Sf1
      • 2.Qf4#
    • 1...Sc4
      • 2.Qf4#
    • 1...Sg4
      • 2.Qf4#
    • 1...Sd5
      • 2.Sd4#
    • 1...Sxf5
      • 2.Qf4#
  • Keys
    • 1.Bd7!
      • threat
        • 2.Sd2#
      • 1...Qxd7
        • 2.Sg5#
      • 1...Sc4
        • 2.Sd4#
      • 1...Sf5
        • 2.Qf4#
      • 1...Sd1
        • 2.Sd4#
      • 1...Sf1
        • 2.Sd4#
      • 1...Sg4
        • 2.Sd4#
      • 1...Sd5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • Q(f);N_GUARD::S(F)
    • Q(f);N_GUARD,P_PINR(B)::S(F)
    • R(g);S_CUTQ(f)::S(F)
    • S(c);OGATE::QAR1(A)
    • S(c);S_CUTQ(f)::S(D)
    • S(c);OGATE,XB(G)::QAR1(A)
  • Actual
    • B(G);
    • Threat
      • S(F)
    • Vars
      • Q(f);N_GUARD,XB(G)::S(F)
      • S(c);::S(D)
      • S(c);OGATE::QAR1(A)
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