MESON Chess Problem Database

Problem Display
PID: 136532 (5K2/6N1/8/6k1/3p3N/8/5P2/5Q2 w - - 0 1)

Drazkowski, Krzysztof

4th Prize, Borowiczi, 1987

5K2/6N1/8/6k1/3p3N/8/5P2/5Q2

#2

5 + 2

6490 yacpdb 2010
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qe2?
      • 1...Kf4
        • 2.Se6#
      • 1...Kxh4
        • 2.Qh5#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qh5#
      • 1...d3!
    • 1.Qg2+?
      • 1...Kf4
        • 2.Sg6#
      • 1...Kxh4
        • 2.Qg3#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kf6!
    • 1.Qb5+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxh4
        • 2.Qh5#
      • 1...Kf6
        • 2.Qf5#
      • 1...Kh6
        • 2.Qh5#
      • 1...Kg4!
  • Keys
    • 1.Qd3!
      • 1...Kf4
        • 2.Qf5#
      • 1...Kg4
        • 2.Qg3#
      • 1...Kxh4
        • 2.Qg3#
      • 1...Kf6
        • 2.Qf5#
      • 1...Kh6
        • 2.Qg6#

This anticipates 171325(1994)

This is a version

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT,XS(C)::QAR1(A)
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::S(C)
        • K(b);S_FLIGHT,XS(C)::QAB1(A)
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
        • K(b);OGATE,S_FLIGHT,XS(C)::QAR1(A)
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAR1(A)
      • K(b);P-FLIGHT::QAR1(A)
      • K(b);S_FLIGHT,XS(C)::QAB1(A)
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