MESON Chess Problem Database

Problem Display
PID: 234359 (1Kb5/2p5/4R2p/N4Rpq/pN6/k1P2B2/rr2Q3/b1B5 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Skakbladet, 1948

1Kb5/2p5/4R2p/N4Rpq/pN6/k1P2B2/rr2Q3/b1B5

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Sc2#
  • Tries
    • 1.Bxb2+?
      • 1...Bxb2
        • 2.Sc2#
      • 1...Rxb2!
    • 1.Qxb2+?
      • 1...Bxb2
        • 2.Sc2#
      • 1...Rxb2!
  • Keys
    • 1.Ka7!
      • threat
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(j);N_PINS(E)::S(E)
  • Tries
    • Try
      • B(A);CHECK,N_SPINS(E),XR(c)
      • Vars
        • B(a);SBLOCK,XB(A)::S(E)
      • Refutation
        • R(b);P_PINS(E),XB(A)
    • Try
      • Q(B);CHECK,N_SPINS(E),XR(c)
      • Vars
        • B(a);P_SPINB(a),XQ(B)::S(E)
      • Refutation
        • R(b);P_PINS(E),P_SPINR(b),XQ(B)
  • Actual
    • K(I);N_SPINS(E),S_FLIGHT
    • Threat
      • S(E)
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