MESON Chess Problem Database

Problem Display
PID: 273476 (8/4Q3/2pp4/3p2P1/K2k4/2pP4/2P4p/7N w - - 0 1)

Schlachter, N

Die Schwalbe, 1932

8/4Q3/2pp4/3p2P1/K2k4/2pP4/2P4p/7N

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qa7#
  • Tries
    • 1.Ka5?
      • 1...Kc5
        • 2.Qa7#
      • 1...c5!
    • 1.Qxd6?
      • 1...c5
        • 2.Qf4#
      • 1...Ke3!
    • 1.Qf6+?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5!
    • 1.Qf8?
      • 1...Ke3
        • 2.Qf2#
      • 1...Ke5
        • 2.Qf6#
      • 1...c5
        • 2.Qf4#
      • 1...Kc5!
    • 1.Qe4+?
      • 1...Kc5
        • 2.Qb4#
      • 1...dxe4!
    • 1.Qg7+?
      • 1...Kc5
        • 2.Qa7#
      • 1...Ke3!
    • 1.g6?
      • 1...Kc5
        • 2.Qa7#
      • 1...c5!
  • Keys
    • 1.Qf7!
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5
        • 2.Qa7#
      • 1...Ke5
        • 2.Qf6#
      • 1...c5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_GUARD,P_SPINP(f),S_CUTP(e),S_FLIGHT::QAB(F)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(c);N_GUARD,P_SPINP(f),S_CUTP(e),S_FLIGHT::QAB(F)
      • Refutation
        • P(e);
    • Try
      • Q(F);P_PINP(d),XP(f)
      • Vars
        • P(e);SBLOCK::QAR2(F)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAB1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAB1(F)
        • P(e);SBLOCK::QAR2(F)
      • Refutation
        • K(c);P_SPINP(f),S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • P(d);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);N_GUARD,S_CUTP(e),S_FLIGHT::QAB(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(c);N_GUARD,P_SPINP(f),S_CUTP(e),S_FLIGHT::QAB(F)
      • Refutation
        • P(e);
  • Actual
    • Q(F);
    • Vars
      • K(c);N_GUARD,S_FLIGHT::QAB1(F)
      • K(c);N_GUARD,S_CUTP(e),S_FLIGHT::QAB(F)
      • P(e);SBLOCK::QAR2(F)
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