MESON Chess Problem Database

Problem Display
PID: 9737 (2N5/8/8/4k2K/6P1/5R1Q/B7/8 w - - 0 1)

Sackmann, Franz

Deutsche Arbeiter Schachzeitung, 1909

2N5/8/8/4k2K/6P1/5R1Q/B7/8

#2

6 + 1

3295 Einfuhrung in die Welt des Schachproblem 1984
3310 2345 Chess Problems 1997
2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Tries
    • 1.Rc3?
      • 1...Kd4
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...Kf4
        • 2.Qe3#
      • 1...Kf6!
    • 1.Rd3?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kf4
        • 2.Qe3#
      • 1...Kf6!
    • 1.Qh2+?
      • 1...Ke4
        • 2.Qf4#
      • 1...Kd4!
    • 1.Qg3+?
      • 1...Ke4
        • 2.Qf4#
      • 1...Kd4!
  • Keys
    • 1.Ra3!
      • 1...Kd4
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...Kf4
        • 2.Qe3#
      • 1...Kf6
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::QAB(C)
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