MESON Chess Problem Database

Problem Display
PID: 109761 (8/8/8/5K2/8/1N1p1p1N/4k3/Q7 w - - 0 1)

Zalewski, Mieczyzlaw

Szachy, 1977

8/8/8/5K2/8/1N1p1p1N/4k3/Q7

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qe5#
      • 2.Qe1#
  • Tries
    • 1.Sg1+?
      • 1...Ke3
        • 2.Qd4#
        • 2.Qe1#
        • 2.Qa7#
      • 1...Kf2!
    • 1.Sf4+?
      • 1...Ke3
        • 2.Qd4#
        • 2.Qe1#
        • 2.Qa7#
      • 1...Kf2!
    • 1.Qd1+?
      • 1...Ke3
        • 2.Qe1#
        • 2.Qd2#
      • 1...Kxd1!
    • 1.Qf1+?
      • 1...Ke3
        • 2.Qe1#
        • 2.Qf2#
      • 1...Kxf1!
  • Keys
    • 1.Ke4!
      • 1...d2
        • 2.Sd4#
      • 1...f2
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • P(b);SBLOCK::S(B)
      • P(c);SBLOCK::S(C)
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