MESON Chess Problem Database

Problem Display
PID: 10719 (4K3/8/8/8/1k6/NB6/1R6/7Q w - - 0 1)

Hoffmann, Fritz

Revista de Sah, 1967

4K3/8/8/8/1k6/NB6/1R6/7Q

#2

5 + 1

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Tries
    • 1.Be6+?
      • 1...Kxa3
        • 2.Qa1#
      • 1...Ka4
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa8#
      • 1...Kc5
        • 2.Qd5#
      • 1...Kc3!
    • 1.Bf7+?
      • 1...Kxa3
        • 2.Qa1#
      • 1...Ka4
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa8#
      • 1...Kc5
        • 2.Qd5#
      • 1...Kc3!
    • 1.Bg8+?
      • 1...Kxa3
        • 2.Qa1#
      • 1...Ka4
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa8#
      • 1...Kc5
        • 2.Qd5#
      • 1...Kc3!
    • 1.Qd5?
      • 1...Kc3
        • 2.Qd2#
      • 1...Kxa3!
    • 1.Qc6?
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxa3!
  • Keys
    • 1.Bc4+!
      • 1...Kxa3
        • 2.Qa1#
      • 1...Kc3
        • 2.Qh8#
      • 1...Ka4
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa8#
      • 1...Kc5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(C)::QAR2(A)
        • K(a);P-FLIGHT::QAR(A)
        • K(a);S_FLIGHT::QAR(A)
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(C)::QAR2(A)
        • K(a);P-FLIGHT::QAR(A)
        • K(a);S_FLIGHT::QAR(A)
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(C)::QAR2(A)
        • K(a);P-FLIGHT::QAR(A)
        • K(a);S_FLIGHT::QAR(A)
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
  • Actual
    • B(D);CHECK
    • Vars
      • K(a);S_FLIGHT,XS(C)::QAR2(A)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);P-FLIGHT::QAR(A)
      • K(a);S_FLIGHT::QAR(A)
      • K(a);S_FLIGHT::QAR1(A)
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