MESON Chess Problem Database

Problem Display
PID: 238141 (q2n4/8/4P3/2B1k2N/7n/p2PN2B/4R3/2KQ3b w - - 0 1)

Hermanson, Halvar

Mat, 1977

q2n4/8/4P3/2B1k2N/7n/p2PN2B/4R3/2KQ3b

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Sc4#
    • 1...Be4
      • 2.d4#
    • 1...Bd5
      • 2.Sc4#
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qc3#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Qe4
        • 2.Qb8#
      • 1...Qd5
        • 2.Sc4#
      • 1...Qa4
        • 2.Qb8#
      • 1...Qa5
        • 2.Sg2#
      • 1...Sf3
        • 2.Sd5#
      • 1...Sf5
        • 2.Sg4#
      • 1...Sc6
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • Q(e);SBLOCK::R(C)+S(E),DCHECK
    • B(a);SBLOCK::P(D)
    • B(a);SBLOCK::R(C)+S(E),DCHECK
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • S(f);OGATE,XP(I)::QAR1(B),XS(f)
      • Q(e);N_GUARD::QAB(B)
      • Q(e);SBLOCK::R(C)+S(E),DCHECK
      • Q(e);N_GUARD::R(C)+S(E)
      • S(c);S_CUTB(a)::R(C)+S(E)
      • S(c);SBLOCK::R(C)+S(E),DCHECK
      • S(f);S_CUTQ(e)::R(C)+S(E)
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