MESON Chess Problem Database

Problem Display
PID: 19446 (kn6/N1R5/p4q2/4n3/8/5b2/1Q6/K7 w - - 0 1)

Rehn, Gunnar

1st Prize, Problemisten, 1947

kn6/N1R5/p4q2/4n3/8/5b2/1Q6/K7

#2

4 + 6

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qb7#
    • 1...Be2
      • 2.Qb7#
    • 1...Bg4
      • 2.Qb7#
    • 1...Bh5
      • 2.Qb7#
    • 1...Bb7
      • 2.Qxb7#
    • 1...Sc6
      • 2.Qb7#
  • Keys
    • 1.Sc8!
      • threat
        • 2.Ra7#
      • 1...Qe7
        • 2.Sb6#
      • 1...Qg7
        • 2.Sb6#
      • 1...Qb6
        • 2.Sxb6#
      • 1...Qf7
        • 2.Sb6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Sec6
        • 2.Sb6#
      • 1...Sbc6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAB1(B)
    • B(a);N_GUARD::QAB1(B),XB(a)
    • S(f);S_CUTB(a)::QAB1(B)
  • Actual
    • S(C);
    • Threat
      • R1(D)
    • Vars
      • Q(d);N_GUARD::S(C)
      • Q(d);N_GUARD::S(C),XQ(d)
      • B(a);N_GUARD::QAB1(B),XB(a)
      • S(b);P_PINQ(B),S_CUTQ(d)::S(C)
      • S(f);S_CUTB(a)::QAB1(B)
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