MESON Chess Problem Database

Problem Display
PID: 247916 (3b4/1n2p2p/1p2R3/pp1k2pq/N5B1/3P4/2KPNP2/B1Q4b w - - 0 1)

Blikeng, Bjarne

Suomen Shakki, 1996

3b4/1n2p2p/1p2R3/pp1k2pq/N5B1/3P4/2KPNP2/B1Q4b

#2

10 + 11

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe8
      • 2.Qxh1#
    • 1...Sc5
      • 2.Sac3#
  • Tries
    • 1.Kd1?
      • threat
        • 2.Qc6#
      • 1...Sc5
        • 2.Sac3#
      • 1...Sd6
        • 2.Re5#
      • 1...Qe8!
    • 1.Kb2?
      • threat
        • 2.Qc6#
      • 1...Qe8
        • 2.Qxh1#
      • 1...Sc5
        • 2.Sac3#
      • 1...Sd6!
    • 1.Sxb6+?
      • 1...Kc5
        • 2.Kb3#
      • 1...Bxb6!
    • 1.Qb2?
      • threat
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qa2#
        • 2.Qb3#
      • 1...Qxg4
        • 2.Qe5#
      • 1...bxa4
        • 2.Qd4#
        • 2.Qe5#
      • 1...Qh2
        • 2.Qd4#
        • 2.Qa2#
        • 2.Qb3#
      • 1...Bc7
        • 2.Qd4#
        • 2.Qa2#
        • 2.Qb3#
      • 1...Sc5
        • 2.Sac3#
        • 2.Qd4#
        • 2.Qe5#
      • 1...b4
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qb3#
      • 1...Sd6!
  • Keys
    • 1.Kb1!
      • threat
        • 2.Qc6#
      • 1...Qe8
        • 2.Qxh1#
      • 1...Sc5
        • 2.Sac3#
      • 1...Sd6
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(f);N_GUARD::QAB(B),XB(a)
    • S(h);SBLOCK::S(H)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • S(h);SBLOCK::S(H)
        • S(h);SBLOCK::R1(J)
      • Refutation
        • Q(f);
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • Q(f);N_GUARD::QAB(B),XB(a)
        • S(h);SBLOCK::S(H)
      • Refutation
        • S(h);
    • Try
      • S(H);CHECK,XP(g)
      • Vars
        • K(d);P-FLIGHT::QAR(B)+K(C)
      • Refutation
        • B(k);XS(H)
    • Try
      • Q(B);
      • Threat
        • DUALS(4)
      • Vars
        • Q(f);XB(I)::QAR1(B)
      • Refutation
        • S(h);
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • QAB1(B)
    • Vars
      • Q(f);N_GUARD::QAB(B),XB(a)
      • S(h);SBLOCK::S(H)
      • S(h);SBLOCK::R1(J)
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