MESON Chess Problem Database

Problem Display
PID: 9621 (n1N5/6Q1/2p1k3/8/7N/2K5/8/8 w - - 0 1)

von Gottschall, Hermann

Bohemia, 1907

n1N5/6Q1/2p1k3/8/7N/2K5/8/8

#2

4 + 3

3360 Simple Two-move Themes 1924
887 Mate in Two Moves 1931
3295 Einfuhrung in die Welt des Schachproblem 1984
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Tries
    • 1.Qf8?
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qf5#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kd7!
    • 1.Qg6+?
      • 1...Kd5
        • 2.Qf5#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kd7!
    • 1.Qd7+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kxd7!
    • 1.Qf7+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Kxf7!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qf5#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kf6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(C)
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);S_FLIGHT::QAR2(C)
      • K(b);P-FLIGHT::QAR1(C)
      • K(b);P-FLIGHT::QAB1(C)
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