MESON Chess Problem Database

Problem Display
PID: 161546 (2K1b1N1/b2pPn2/P2k4/2Np2R1/2Br4/B6q/1R6/2r5 w - - 0 1)

Albrecht, Hermann

Die Schwalbe, 1947

2K1b1N1/b2pPn2/P2k4/2Np2R1/2Br4/B6q/1R6/2r5

#2

9 + 9

274 diagrammes 1974
15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc5
      • 2.Rb6#
    • 1...Bb6
      • 2.Rxb6#
    • 1...Bb8
      • 2.Rb6#
  • Tries
    • 1.Sb7+?
      • 1...Kc6
        • 2.Sa5#
      • 1...Ke6!
  • Keys
    • 1.Sxd7+!
      • 1...Kc6
        • 2.Bb5#
      • 1...Ke6
        • 2.Sf8#
      • 1...Qxa3
        • 2.Rg6#
      • 1...Bc5
        • 2.Rb6#

There are these versions: 161552

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(f);N_GUARD,P_SPINB(f),XS(D)::R(A)
    • B(f);N_GUARD::R(A),XB(f)
    • B(f);N_GUARD::R(A)
  • Tries
    • Try
      • S(D);CHECK,P_SPINB(C)
      • Vars
        • K(e);N_PINB(C),P-FLIGHT::S(D)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(d)
  • Actual
    • S(D);CHECK,P_SPINB(C),P_SPINS(D),XP(g)
    • Vars
      • K(e);N_PINB(C),P-FLIGHT::B(C)
      • K(e);N_PINS(D),P-FLIGHT,P_SPINP(d)::S(D)
      • Q(b);N_PINS(D),XB(B)::R(E)
      • B(f);N_PINB(C),P_SPINB(f)::R(A)
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