MESON Chess Problem Database

Problem Display
PID: 161489 (b7/8/6K1/5Np1/6R1/4b3/4p3/4Q1Bk w - - 0 1)

Albrecht, Hermann

Neue Leipziger Zeitung, 1936

(First published on Sun Jan 19 1936)

b7/8/6K1/5Np1/6R1/4b3/4p3/4Q1Bk

#2

5 + 5

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg1
      • 2.Qxg1#
    • 1...Bg2
      • 2.Sg3#
  • Tries
    • 1.Bh2+?
      • 1...Bg1
        • 2.Qxg1#
      • 1...Kxh2!
    • 1.Qg3?
      • threat
        • 2.Qh2#
        • 2.Qh3#
      • 1...Bxg1
        • 2.Qxg1#
      • 1...Bg2
        • 2.Qh2#
        • 2.Qxg2#
      • 1...Bf4!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qh8#
        • 2.Qxa8#
      • 1...Bxg1
        • 2.Qxg1#
      • 1...e1Q
        • 2.Qxa8#
      • 1...e1S
        • 2.Qh8#
      • 1...e1B
        • 2.Qxa8#
      • 1...Bf2
        • 2.Qxa8#
      • 1...Bd4
        • 2.Qxa8#
      • 1...Bf4
        • 2.Qxa8#
      • 1...Ba7
        • 2.Qh8#
      • 1...Bg2
        • 2.Sg3#
      • 1...Bf3
        • 2.Qh8#
      • 1...Be4
        • 2.Qh8#
      • 1...Bd5
        • 2.Qh8#
      • 1...Bc6
        • 2.Qh8#
      • 1...Bb7
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • B(c);OGATE,P_SPINB(c),XB(B)::QAR1(A),XB(c)
    • B(e);SBLOCK::S(D)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAR1(A),XB(c)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);OGATE,XB(B)::QAR1(A),XB(c)
      • Refutation
        • B(c);
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • B(c);OGATE,P_SPINB(c),XB(B)::QAR1(A),XB(c)
      • P(b);::QAB(A),XB(e)
      • P(b);::QAB(A)
      • B(c);::QAB(A),XB(e)
      • B(c);::QAB(A)
      • B(e);SBLOCK::S(D)
      • B(e);::QAB(A)
      • B(e);P_PINS(D)::QAB(A)
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