MESON Chess Problem Database

Problem Display
PID: 138412 (1Q6/1N6/1k6/1N6/1p6/1B6/1K6/8 w - - 0 1)

Kiss, Janos

2nd Prize, KISZ JT, 1962

1Q6/1N6/1k6/1N6/1p6/1B6/1K6/8

#2

5 + 2

23 Die Schwalbe 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Bc4?
      • 1...Ka6
        • 2.Qa7#
      • 1...Kc6
        • 2.Qc7#
      • 1...b3!
    • 1.Qc7+?
      • 1...Ka6
        • 2.Qc6#
      • 1...Kxb5!
    • 1.Qc8?
      • 1...Ka6
        • 2.Qc6#
      • 1...Kxb5!
    • 1.Qe8?
      • 1...Ka6
        • 2.Qc6#
      • 1...Kxb7!
  • Keys
    • 1.S7d6+!
      • 1...Ka5
        • 2.Qa7#
      • 1...Kc5
        • 2.Qc7#
      • 1...Ka6
        • 2.Qa7#
      • 1...Kc6
        • 2.Qc7#

FEATURES

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