MESON Chess Problem Database

Problem Display
PID: 227737 (8/3p2R1/1p2k3/1P6/3Q2K1/8/8/8 w - - 0 1)

Dittkowski, O

Essener Anzeiger, 1926

8/3p2R1/1p2k3/1P6/3Q2K1/8/8/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qc5?
      • 1...Kf6
        • 2.Qe7#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Qf5#
      • 1...bxc5!
    • 1.Qe4+?
      • 1...Kf6
        • 2.Qe7#
      • 1...Kd6!
    • 1.Qxd7+?
      • 1...Kf6
        • 2.Qe7#
      • 1...Ke5!
  • Keys
    • 1.Kg5!
      • 1...d5
        • 2.Qf6#
      • 1...d6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
        • P(c);SBLOCK::QAR1(A)
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • P(c);SBLOCK::QAR1(A)
      • P(c);SBLOCK::QAR2(A)
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