MESON Chess Problem Database

Problem Display
PID: 62155 (k1NN3Q/2P5/1p6/Bp5K/1Pn5/1B6/8/8 w - - 0 1)

Bowell, Gerald P

Chess, 1943

k1NN3Q/2P5/1p6/Bp5K/1Pn5/1B6/8/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Bd5#
    • 1...Sd2
      • 2.Bd5#
    • 1...Sa3
      • 2.Bd5#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Sd6#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Kb7!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qh1#
      • 1...Sxa5
        • 2.Bd5#
      • 1...Sd2
        • 2.Bd5#
        • 2.Bxb6#
      • 1...Se3
        • 2.Bxb6#
      • 1...Se5
        • 2.Bxb6#
      • 1...Sd6
        • 2.Bxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(a);OGATE::B(A)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR(H)+S(F)
      • Vars
        • S(a);::QAR(H)+S(F),XS(a)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • S(a);OGATE,P_SPINS(a),XB(C)::B(A)
      • S(a);N_GUARD::QAR(H)+B(C),XP(c)
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