MESON Chess Problem Database

Problem Display
PID: 271043 (8/8/4pP1p/B6p/2PN1k1p/Q6P/2B5/6K1 w - - 0 1)

Drese, Gerardus Hendrikus

Schakend Nederland, 1969

8/8/4pP1p/B6p/2PN1k1p/Q6P/2B5/6K1

#2

8 + 5

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Se6#
      • 2.Bd2#
  • Tries
    • 1.Se2+?
      • 1...Ke5
        • 2.Bc3#
      • 1...Kg5!
    • 1.Bc7+?
      • 1...e5
        • 2.Se6#
      • 1...Kg5!
    • 1.Bd8?
      • 1...Kg5
        • 2.Sxe6#
        • 2.Qc1#
        • 2.Qe3#
      • 1...e5
        • 2.Se6#
      • 1...Ke5!
    • 1.Qc1+?
      • 1...Kg3
        • 2.Qe3#
      • 1...Ke5!
    • 1.Qd6+?
      • 1...Ke3
        • 2.Qe5#
      • 1...Kg5
        • 2.Qe5#
      • 1...e5!
    • 1.Qc3?
      • threat
        • 2.Sxe6#
      • 1...Kg5
        • 2.Sxe6#
      • 1...e5
        • 2.Se6#
      • 1...Ke5!
    • 1.Qf3+?
      • 1...Kg5
        • 2.Sxe6#
        • 2.Bd2#
      • 1...Ke5!
  • Keys
    • 1.Bc3!
      • 1...Ke3
        • 2.Qc1#
      • 1...Kg3
        • 2.Bd2#
      • 1...Ke5
        • 2.Se2#
      • 1...Kg5
        • 2.Sxe6#
      • 1...e5
        • 2.Bd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(G);CHECK
      • Vars
        • P(d);P_SPINP(d)::S(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(G);
      • Vars
        • P(d);SBLOCK::S(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(C)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(C);
      • Threat
        • S(F),XP(d)
      • Vars
        • K(a);S_FLIGHT::S(F),XP(d)
        • P(d);::S(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(G);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB(C)
      • K(a);N_GUARD,S_FLIGHT::QAR(C)+B(G)
      • K(a);N_GUARD,S_FLIGHT::B(G)+S(F)
      • K(a);N_GUARD,S_FLIGHT::S(F),XP(d)
      • P(d);SBLOCK::B(G)
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