MESON Chess Problem Database

Problem Display
PID: 185091 (8/8/2b5/1q4NQ/8/1p2B1pB/3p2P1/3K1k2 w - - 0 1)

Rossler, Helmut Karl

Basler Nachrichten, 1974

8/8/2b5/1q4NQ/8/1p2B1pB/3p2P1/3K1k2

#2

6 + 6

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2+
      • 2.Qxe2#
    • 1...Qa4
      • 2.Qe2#
    • 1...Qb4
      • 2.Qe2#
    • 1...Qa5
      • 2.Qe2#
    • 1...Qc5
      • 2.Qe2#
    • 1...Qd5
      • 2.Qe2#
    • 1...Qe5
      • 2.Qe2#
    • 1...Qf5
      • 2.Qe2#
    • 1...Qxg5
      • 2.Qe2#
    • 1...Qb6
      • 2.Qe2#
    • 1...Qb7
      • 2.Qe2#
    • 1...Qb8
      • 2.Qe2#
    • 1...Bxg2
      • 2.Qf3#
    • 1...Bf3+
      • 2.Qxf3#
    • 1...Bd7
      • 2.Qf3#
    • 1...Be8
      • 2.Qf3#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qh1#
      • 1...Qe2+
        • 2.Qxe2#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Kxg2
        • 2.Qh3#
      • 1...Bxg2!
    • 1.Be6?
      • threat
        • 2.Qh1#
      • 1...Qe2+
        • 2.Qxe2#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Kxg2
        • 2.Qh3#
      • 1...Bxg2!
    • 1.Bc8?
      • threat
        • 2.Qh1#
      • 1...Qe2+
        • 2.Qxe2#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Kxg2
        • 2.Qh3#
      • 1...Bxg2!
    • 1.Qf7+?
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Qf5!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Qh1#
      • 1...Qe2+
        • 2.Qxe2#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Kxg2
        • 2.Qh3#
      • 1...Bxg2
        • 2.Bxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • Q(e);CHECK,N_GUARD::QAB1(F),XQ(e)
    • Q(e);N_GUARD::QAB1(F)
    • Q(e);N_GUARD,XS(E)::QAB1(F)
    • B(f);N_GUARD,P_SPINB(f),XP(B)::QAR2(F)
    • B(f);CHECK,N_GUARD::QAR2(F),XB(f)
    • B(f);N_GUARD::QAR2(F)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR2(F)
      • Vars
        • Q(e);CHECK,N_GUARD::QAB1(F),XQ(e)
        • B(f);CHECK,N_GUARD::QAR2(F),XB(f)
        • K(a);OGATEB,S_FLIGHT,XP(B)::QAB1(F)
      • Refutation
        • B(f);XP(B)
    • Try
      • B(D);
      • Threat
        • QAR2(F)
      • Vars
        • Q(e);CHECK,N_GUARD::QAB1(F),XQ(e)
        • B(f);CHECK,N_GUARD::QAR2(F),XB(f)
        • K(a);OGATEB,S_FLIGHT,XP(B)::QAB1(F)
      • Refutation
        • B(f);XP(B)
    • Try
      • B(D);
      • Threat
        • QAR2(F)
      • Vars
        • Q(e);CHECK,N_GUARD::QAB1(F),XQ(e)
        • B(f);CHECK,N_GUARD::QAR2(F),XB(f)
        • K(a);OGATEB,S_FLIGHT,XP(B)::QAB1(F)
      • Refutation
        • B(f);XP(B)
    • Try
      • Q(F);CHECK
      • Vars
        • B(f);CHECK,N_GUARD,P_SPINB(f)::QAR2(F),XB(f)
      • Refutation
        • Q(e);P_SPINQ(e)
  • Actual
    • B(D);
    • Threat
      • QAR2(F)
    • Vars
      • Q(e);CHECK,N_GUARD::QAB1(F),XQ(e)
      • B(f);CHECK,N_GUARD::QAR2(F),XB(f)
      • K(a);OGATEB,S_FLIGHT,XP(B)::QAB1(F)
      • B(f);OGATE,SBLOCK,XP(B)::B(D),XQ(e)
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