MESON Chess Problem Database

Problem Display
PID: 121556 (1KN2Q2/3p2p1/6P1/4kP2/1P3p2/3p1p2/3N1P2/8 w - - 0 1)

Havel, Miroslav

Romanleser, 1899

1KN2Q2/3p2p1/6P1/4kP2/1P3p2/3p1p2/3N1P2/8

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qc5#
    • 1...Kd5
      • 2.Qc5#
      • 2.Qd6#
  • Tries
    • 1.Sa7?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...d5
        • 2.Sc6#
      • 1...d6!
    • 1.Qc5+?
      • 1...Kf6
        • 2.Se4#
      • 1...d5!
    • 1.Qe7+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qe4#
      • 1...Kxf5!
  • Keys
    • 1.Se7!
      • 1...Kd4
        • 2.Qxg7#
      • 1...Kd6
        • 2.Sc4#
      • 1...d6
        • 2.Qxg7#
      • 1...d5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::QAB1(H)
  • Tries
    • Try
      • S(G);
      • Vars
        • K(d);S_FLIGHT::QAB1(H)
        • K(d);P-FLIGHT::QAR1(H)
        • P(e);N_GUARD,SBLOCK::S(G)
      • Refutation
        • P(e);
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);S_FLIGHT::S(A)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(H)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
  • Actual
    • S(G);
    • Vars
      • K(d);S_FLIGHT::QAB(H),XP(f)
      • K(d);S_FLIGHT::S(A)
      • P(e);SBLOCK::QAB(H),XP(f)
      • P(e);N_GUARD,SBLOCK::S(G)
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