MESON Chess Problem Database

Problem Display
PID: 94826 (k2B1N1R/p7/8/5p2/3prn2/KQ6/5pq1/7B w - - 0 1)

Hermanson, Halvar

British Chess Magazine, 1963

k2B1N1R/p7/8/5p2/3prn2/KQ6/5pq1/7B

#2

6 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bc7?
      • threat
        • 2.Qb8#
      • 1...Qf3
        • 2.Se6#
      • 1...Qh3
        • 2.Sh7#
      • 1...Qg3
        • 2.Sg6#
      • 1...Re3
        • 2.Se6#
      • 1...Re8!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qb8#
      • 1...Qf3
        • 2.Be7#
      • 1...Qh3
        • 2.Bh4#
      • 1...Qg3
        • 2.Bg5#
      • 1...Re3
        • 2.Be7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(C)
      • Vars
        • Q(b);N_GUARD,P_PINQ(C)::R(F)+S(E)
        • Q(b);N_GUARD,P_PINQ(C),P_SPINR(d)::R(F)+S(E)
        • Q(b);P_PINQ(C),P_SPINR(d)::R(F)+S(E)
        • R(d);P_PINQ(C),P_SPINQ(b)::R(F)+S(E)
      • Refutation
        • R(d);P_SPINQ(b)
  • Actual
    • S(E);
    • Threat
      • QAR1(C)
    • Vars
      • Q(b);N_GUARD,P_PINQ(C)::R(F)+B(D)
      • Q(b);N_GUARD,P_PINQ(C),P_SPINR(d)::R(F)+B(D)
      • Q(b);P_PINQ(C),P_SPINR(d)::R(F)+B(D)
      • R(d);P_PINQ(C),P_SPINQ(b)::R(F)+B(D)
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