MESON Chess Problem Database

Problem Display
PID: 254569 (1Q6/2n4r/p2N2R1/n1k3NR/P7/2bK4/P7/7B w - - 0 1)

Latzel, Gerhard Paul

Wiener Schachzeitung, 1938

(First published on Sat Mar 5 1938)

1Q6/2n4r/p2N2R1/n1k3NR/P7/2bK4/P7/7B

#2

9 + 6

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qa7#
    • 1...Sc6
      • 2.Sge4#
    • 1...Sd5
      • 2.Sde4#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sa8
      • 2.Se6#
    • 1...Se8
      • 2.Se6#
  • Tries
    • 1.Sxh7+?
      • 1...Sd5
        • 2.Se4#
      • 1...Be5!
  • Keys
    • 1.a3!
      • threat
        • 2.Qa7#
      • 1...Bf6
        • 2.Qb4#
      • 1...Sd5
        • 2.Sde4#
      • 1...Sc4
        • 2.Sb7#
      • 1...Sc6
        • 2.Sge4#
      • 1...Sb5
        • 2.Se6#
      • 1...Se6
        • 2.Sxe6#
      • 1...Sa8
        • 2.Se6#
      • 1...Se8
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::QAB(I)
    • S(b);SBLOCK::R(F)+S(E),DCHECK
    • S(e);SBLOCK::S(G)
    • S(e);::R(F)+S(E),DCHECK,XS(e)
    • S(e);::R(F)+S(E),DCHECK
  • Tries
    • Try
      • S(E);CHECK,XR(f)
      • Vars
        • S(e);P_SPINS(e)::S(G)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • P(B);
    • Threat
      • QAB(I)
    • Vars
      • B(a);N_GUARD::QAB1(I)
      • S(e);SBLOCK::S(G)
      • S(b);N_GUARD::S(G)
      • S(b);SBLOCK::R(F)+S(E),DCHECK
      • S(e);::R(F)+S(E),DCHECK
      • S(e);::R(F)+S(E),DCHECK,XS(e)
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