MESON Chess Problem Database

Problem Display
PID: 160996 (3K1b2/1P2pP2/R2NkP2/7b/4B3/2PpR3/5QP1/5q2 w - - 0 1)

Albrecht, Hermann

Frankenschach, 1934

(First published on Fri Jun 29 1934)

3K1b2/1P2pP2/R2NkP2/7b/4B3/2PpR3/5QP1/5q2

#2

11 + 6

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Sc4#
    • 1...Qe2
      • 2.Qf5#
    • 1...Qxg2
      • 2.Bxg2#
      • 2.Qf5#
    • 1...Qa1
      • 2.Qf5#
    • 1...Qb1
      • 2.Qf5#
    • 1...Qc1
      • 2.Qf5#
    • 1...Qd1
      • 2.Qf5#
    • 1...Qe1
      • 2.Qf5#
    • 1...Qg1
      • 2.Qf5#
    • 1...Qh1
      • 2.Qf5#
    • 1...Bxf7
      • 2.Sc4#
    • 1...exf6
      • 2.Bf3#
  • Tries
    • 1.Sb5+?
      • 1...Ke5
        • 2.Bc6#
        • 2.b8Q#
        • 2.b8B#
      • 1...Kxf7!
    • 1.Sf5+?
      • 1...Ke5
        • 2.b8Q#
        • 2.b8B#
      • 1...Kxf7!
    • 1.Sc8+?
      • 1...Ke5
        • 2.Bc6#
        • 2.b8Q#
        • 2.b8B#
      • 1...Kxf7!
    • 1.Se8+?
      • 1...Ke5
        • 2.Bc6#
        • 2.b8Q#
        • 2.b8B#
      • 1...Kxf7!
  • Keys
    • 1.Ke8!
      • threat
        • 2.Sc4#
      • 1...Bxf7+
        • 2.Sxf7#
      • 1...Ke5
        • 2.Sc4#
      • 1...exd6
        • 2.Bc6#
      • 1...exf6
        • 2.Bf3#
      • 1...Qa1
        • 2.Qf5#
      • 1...Qb1
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • K(d);P-FLIGHT::S(G)
    • Q(a);N_GUARD::QAB1(A)
    • B(c);SBLOCK,XP(J)::R(F)+S(G)
    • P(e);SBLOCK,XP(H)::R(D)+B(E)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(d);S_FLIGHT,XP(J)
    • Try
      • S(G);CHECK
      • Vars
        • K(d);P-FLIGHT::P=Q
      • Refutation
        • K(d);S_FLIGHT,XP(J)
    • Try
      • S(G);CHECK
      • Refutation
        • K(d);S_FLIGHT,XP(J)
    • Try
      • S(G);CHECK
      • Refutation
        • K(d);S_FLIGHT,XP(J)
  • Actual
    • K(K);P-FLIGHT,P_SPINP(J)
    • Threat
      • R(F)+S(G)
    • Vars
      • B(c);CHECK,XP(J)::R(F)+S(G),XB(c)
      • K(d);P-FLIGHT::S(G)
      • P(e);P_SPINP(e),SBLOCK,XS(G)::R(D)+B(E)
      • P(e);SBLOCK,XP(H)::R(D)+B(E)
      • Q(a);N_GUARD::QAB1(A)
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