MESON Chess Problem Database

Problem Display
PID: 214078 (8/2pN4/4P3/3k1NR1/P2B1pQ1/8/2K5/8 w - - 0 1)

Burda, Josef

Freie Presse, 1991

8/2pN4/4P3/3k1NR1/P2B1pQ1/8/2K5/8

#2

8 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sf6#
    • 1...Kc6
      • 2.Qf3#
  • Tries
    • 1.Qf3+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kxe6!
  • Keys
    • 1.Bc5!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Sg3#
      • 1...Kc6
        • 2.Qf3#
      • 1...Kxe6
        • 2.Sh6#
      • 1...f3
        • 2.Se7#
      • 1...c6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(a),S_FLIGHT::S(H)
    • K(b);S_FLIGHT::QAB(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
  • Actual
    • B(C);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::S(E)
      • K(b);S_FLIGHT::QAB(D)
      • K(b);S_FLIGHT,XP(G)::QAB(D)+S(E)
      • P(a);::R(F)+S(E),DCHECK
      • P(c);SBLOCK::R(F)+S(E)
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