MESON Chess Problem Database

Problem Display
PID: 160963 (4Q3/rq5b/3rPN2/1R2Pk2/4RP2/4pK2/8/1B4b1 w - - 0 1)

Albrecht, Hermann

Mitteldeutsche Zeitung, 1936

(First published on Tue Dec 15 1936)

4Q3/rq5b/3rPN2/1R2Pk2/4RP2/4pK2/8/1B4b1

#2

9 + 7

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4+
      • 2.Bxe4#
    • 1...Qa6
      • 2.Rd4#
    • 1...Qb6
      • 2.Rd4#
    • 1...Qd7
      • 2.Rd4#
    • 1...Qf7
      • 2.Rd4#
    • 1...Qg7
      • 2.Rd4#
    • 1...Qb8
      • 2.Rd4#
    • 1...Rd5
      • 2.Rd4#
    • 1...Rc6
      • 2.Rc4#
    • 1...Rxe6
      • 2.Qh5#
  • Tries
    • 1.Sg8?
      • threat
        • 2.Sh6#
      • 1...Qxe4+
        • 2.Bxe4#
      • 1...Rxe6
        • 2.Qh5#
      • 1...Qe7
        • 2.exd6#
      • 1...Qf7
        • 2.Rd4#
      • 1...Qg7
        • 2.Rd4#
      • 1...Bxg8!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sh6#
      • 1...Qxe4+
        • 2.Bxe4#
      • 1...Rxe6
        • 2.Qh5#
      • 1...Qe7
        • 2.exd6#
      • 1...Qf7
        • 2.Rd4#
      • 1...Qg7
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(f);CHECK,OGATE,P_SPINQ(f),XR(C)::B(A),XQ(f)
    • Q(f);N_PINR(C)::B(A)+R(C)
    • R(d);N_PINR(C)::B(A)+R(C)
    • R(d);SBLOCK,XP(G)::QAR2(I)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • Q(f);CHECK,OGATE,P_SPINQ(f),XR(C)::B(A),XQ(f)
        • R(d);SBLOCK,XP(G)::QAR2(I)
        • Q(f);N_GUARD,N_PINR(C)::R(E)+P(F),XR(d)
        • Q(f);N_PINR(C)::B(A)+R(C)
      • Refutation
        • B(g);XS(H)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • Q(f);CHECK,OGATE,P_SPINQ(f),XR(C)::B(A),XQ(f)
      • R(d);SBLOCK,XP(G)::QAR2(I)
      • Q(f);N_GUARD,N_PINR(C)::R(E)+P(F),XR(d)
      • Q(f);N_PINR(C)::B(A)+R(C)
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