MESON Chess Problem Database

Problem Display
PID: 11103 (8/8/2pp4/2k5/1R6/K7/4n3/3Q4 w - - 0 1)

Albrecht, Hermann

Neue Leipziger Zeitung, 1936

8/8/2pp4/2k5/1R6/K7/4n3/3Q4

#2

3 + 4

3295 Einfuhrung in die Welt des Schachproblem 1984
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qd4#
    • 1...Sg1
      • 2.Qd4#
    • 1...Sc3
      • 2.Qd4#
    • 1...Sg3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sf4
      • 2.Qd4#
  • Tries
    • 1.Qc2+?
      • 1...Kd5
        • 2.Qf5#
      • 1...Sc3!
    • 1.Qxe2?
      • threat
        • 2.Qc4#
      • 1...d5
        • 2.Qe7#
      • 1...Kd5!
    • 1.Qd2?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc3
        • 2.Qd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sf4
        • 2.Qd4#
      • 1...d5!
  • Keys
    • 1.Qf1!
      • 1...Kd5
        • 2.Qf5#
      • 1...Sc3
        • 2.Qc4#
      • 1...Sc1
        • 2.Qc4#
      • 1...Sg1
        • 2.Qc4#
      • 1...Sg3
        • 2.Qc4#
      • 1...Sd4
        • 2.Qc4#
      • 1...Sf4
        • 2.Qc4#
      • 1...d5
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(A);XS(a)
      • Threat
        • QAR1(A)
      • Vars
        • P(d);OGATEB,SBLOCK::QAB(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • P(d);
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • S(a);OGATE::QAR1(A)
      • P(d);OGATEB,SBLOCK::QAB(A)
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