MESON Chess Problem Database

Problem Display
PID: 161822 (8/B2NK3/2pp4/3k2p1/3pn1R1/1P3n2/6B1/Q1br3b w - - 0 1)

Thomas, Georg

Nationaltidende, 1939

(First published on Sun Oct 15 1939)

8/B2NK3/2pp4/3k2p1/3pn1R1/1P3n2/6B1/Q1br3b

#2

7 + 10

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sfd2
      • 2.Rxg5#
      • 2.Qxd4#
    • 1...Se5
      • 2.Sf6#
    • 1...Sed2
      • 2.Rxd4#
      • 2.Qxd4#
  • Tries
    • 1.Sb6+?
      • 1...Kc5
        • 2.Qa5#
      • 1...Ke5!
    • 1.Qa4?
      • threat
        • 2.Qc4#
      • 1...Sfd2
        • 2.Rxg5#
        • 2.Qxd4#
      • 1...Se5
        • 2.Sf6#
      • 1...Sed2
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...c5!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qc4#
      • 1...Sfd2
        • 2.Rxg5#
      • 1...Se5
        • 2.Sf6#
      • 1...Sed2
        • 2.Rxd4#
      • 1...c5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(d);P_SPINS(f),SBLOCK::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(g);P-FLIGHT::QAR2(A)
      • Refutation
        • K(g);P-FLIGHT,P_SPINP(e)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(d);P_SPINS(f),SBLOCK::S(F)
      • Refutation
        • P(i);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • S(d);N_GUARD,P_SPINS(f),S_CUTB(a)::R(D),XP(h)
      • S(d);P_SPINS(f),SBLOCK::S(F)
      • S(f);OGATE,P_SPINS(d)::R1(D),XP(e)
      • P(i);OGATEB::QAB(A)
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