MESON Chess Problem Database

Problem Display
PID: 136534 (8/5N2/8/7P/6k1/Q2N4/5B2/5K2 w - - 0 1)

Drazkowski, Krzysztof

Prize, Czerkasy, 1988-1989

8/5N2/8/7P/6k1/Q2N4/5B2/5K2

#2

6 + 1

5454 Near Snap 2010
6490 yacpdb 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Sde5+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kxh5
        • 2.Qf3#
        • 2.Qh3#
      • 1...Kf5!
    • 1.Qc5?
      • 1...Kf3
        • 2.Qf5#
      • 1...Kh3!
    • 1.Qd6?
      • 1...Kf3
        • 2.Qf4#
      • 1...Kh3
        • 2.Qg3#
      • 1...Kf5
        • 2.Qg6#
      • 1...Kxh5!
    • 1.Qa5?
      • 1...Kf3
        • 2.Qf5#
      • 1...Kh3!
  • Keys
    • 1.Qe7!
      • 1...Kf3
        • 2.Qe2#
      • 1...Kh3
        • 2.Qh4#
      • 1...Kf5
        • 2.Sh6#
      • 1...Kxh5
        • 2.Qg5#

Anticipated by 10844(1969)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::S(F)
      • K(a);S_FLIGHT,XP(E)::QAR1(C)
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