MESON Chess Problem Database

Problem Display
PID: 87687 (3n4/2p5/8/P2kpB2/KQ2p3/1P3n2/N7/B7 w - - 0 1)

Nanning, Frederik Willem

American Chess Problemist, 1949

3n4/2p5/8/P2kpB2/KQ2p3/1P3n2/N7/B7

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Sc3#
    • 1...Se6
      • 2.Bxe4#
    • 1...c6
      • 2.Sc3#
  • Tries
    • 1.Qb5+?
      • 1...c5
        • 2.Qd7#
      • 1...Kd6!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Sb4#
      • 1...Kc6
        • 2.Bxe4#
      • 1...Sc6
        • 2.Be6#
      • 1...c5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(f);SBLOCK::S(B)
    • S(f);SBLOCK::B(G),XP(b)
    • P(e);SBLOCK::S(B)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • P(e);P_SPINP(e),SBLOCK::QAR2(E)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(E);
    • Threat
      • S(B)
    • Vars
      • K(c);S_FLIGHT::B(G),XP(b)
      • S(f);N_GUARD,SBLOCK::B(G)
      • P(e);SBLOCK::QAR2(E)
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