MESON Chess Problem Database

Problem Display
PID: 161552 (1n6/2K3N1/b2pP2R/3k4/2Npp3/2B1P3/B6q/1Rrr4 w - - 0 1)

Albrecht, Hermann

Source?, 1947

1n6/2K3N1/b2pP2R/3k4/2Npp3/2B1P3/B6q/1Rrr4

#2

9 + 9

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Rh5#
    • 1...Qc2
      • 2.Rh5#
    • 1...Qd2
      • 2.Rh5#
    • 1...Qh5
      • 2.Rxh5#
    • 1...Bxc4
      • 2.Rb5#
    • 1...Bb5
      • 2.Rxb5#
    • 1...Bb7
      • 2.Rb5#
    • 1...Bc8
      • 2.Rb5#
  • Tries
    • 1.Sd2+?
      • 1...Kc5
        • 2.Sxe4#
        • 2.Bxd4#
        • 2.exd4#
      • 1...Bc4
        • 2.Rb5#
      • 1...Ke5!
    • 1.Sa3+?
      • 1...Kc5
        • 2.Bb4#
      • 1...Qxa2
        • 2.Rh5#
      • 1...Bc4
        • 2.Rb5#
      • 1...Ke5!
    • 1.Sb6+?
      • 1...Kc5
        • 2.Sa4#
      • 1...Ke5!
  • Keys
    • 1.Sxd6+!
      • 1...Kc5
        • 2.Bb4#
      • 1...Ke5
        • 2.Sf7#
      • 1...Qxa2
        • 2.Rh5#
      • 1...Bc4
        • 2.Rb5#

This is a version of 161546

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(c);N_GUARD::R(G)
    • Q(c);N_GUARD::R(G),XQ(c)
    • B(g);N_GUARD,P_SPINB(g),XS(E)::R(A)
    • B(g);N_GUARD::R(A),XB(g)
    • B(g);N_GUARD::R(A)
  • Tries
    • Try
      • S(E);CHECK,P_SPINB(C)
      • Vars
        • B(g);N_PINB(C),P_SPINB(g)::R(A)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(d)
    • Try
      • S(E);CHECK,P_SPINB(C)
      • Vars
        • K(f);N_PINB(C),P-FLIGHT::B(C)
        • Q(c);XB(B)::R(G)
        • B(g);N_PINB(C),P_SPINB(g)::R(A)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(d)
    • Try
      • S(E);CHECK,P_SPINB(C)
      • Vars
        • K(f);N_PINB(C),P-FLIGHT::S(E)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(d)
  • Actual
    • S(E);CHECK,P_SPINB(C),P_SPINS(E),XP(h)
    • Vars
      • K(f);N_PINB(C),P-FLIGHT::B(C)
      • K(f);N_PINS(E),P-FLIGHT,P_SPINP(d)::S(E)
      • Q(c);N_PINS(E),XB(B)::R(G)
      • B(g);N_PINB(C),P_SPINB(g)::R(A)
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