MESON Chess Problem Database

Problem Display
PID: 29030 (1k6/r7/bNQN4/8/3K4/8/8/8 w - - 0 1)

Benoit, Marc

Christian Science Monitor, 1972

1k6/r7/bNQN4/8/3K4/8/8/8

#2

4 + 3

3248 Miniatures canadiennes 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rc7
      • 2.Qa8#
    • 1...Bf1
      • 2.Qc8#
    • 1...Be2
      • 2.Qc8#
    • 1...Bd3
      • 2.Qc8#
    • 1...Bc4
      • 2.Qc8#
    • 1...Bb5
      • 2.Qc8#
    • 1...Bc8
      • 2.Qxc8#
  • Tries
    • 1.Qe8+?
      • 1...Bc8
        • 2.Qxc8#
      • 1...Kc7!
  • Keys
    • 1.Sb5!
      • 1...Rd7+
        • 2.Sxd7#
      • 1...Bxb5
        • 2.Qc8#
      • 1...Rb7
        • 2.Qe8#
        • 2.Qc8#
      • 1...Rc7
        • 2.Qa8#
        • 2.Qxc7#
      • 1...Re7
        • 2.Qa8#
      • 1...Rf7
        • 2.Qa8#
      • 1...Rg7
        • 2.Qa8#
      • 1...Rh7
        • 2.Qa8#
      • 1...Ra8
        • 2.Sd7#
        • 2.Qxa8#
        • 2.Qc7#
      • 1...Bb7
        • 2.Qd6#
        • 2.Qc7#
      • 1...Bc8
        • 2.Qxc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD,SBLOCK::QAR1(C)
    • B(a);N_GUARD::QAR1(C)
    • B(a);N_GUARD::QAR1(C),XB(a)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(C),XB(a)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • R(b);CHECK,N_GUARD::S(B),XR(b)
      • B(a);N_GUARD,XS(D)::QAR1(C)
      • R(b);N_GUARD::QAR1(C)
      • B(a);N_GUARD::QAR1(C),XB(a)
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