MESON Chess Problem Database

Problem Display
PID: 183358 (4nB2/3p4/1RRrN1N1/3k2K1/8/8/8/3B4 w - - 0 1)

Janet, Frank

British Chess Magazine, 1914

4nB2/3p4/1RRrN1N1/3k2K1/8/8/8/3B4

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Bb3#
  • Tries
    • 1.Rc5+?
      • 1...Kxe6
        • 2.Bb3#
      • 1...Ke4!
  • Keys
    • 1.Rb4!
      • 1...Kxc6
        • 2.Se7#
      • 1...Kxe6
        • 2.Bb3#
      • 1...Rxc6
        • 2.Sef4#
      • 1...Rxe6
        • 2.Rc5#
      • 1...dxc6
        • 2.Bb3#
      • 1...dxe6
        • 2.Bf3#
      • 1...Sf6
        • 2.Rxd6#
      • 1...Sc7
        • 2.Rxd6#
      • 1...Sg7
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINR(b),S_FLIGHT,XS(E)::B(A)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(a);P_SPINR(b),S_FLIGHT,XS(E)::B(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);S_FLIGHT,XR(D)::S(F)
      • K(a);P_SPINR(b),S_FLIGHT,XS(E)::B(A)
      • R(b);SBLOCK,XR(D)::S(E)
      • R(b);SBLOCK,XS(E)::R1(D)
      • P(c);SBLOCK,XR(D)::B(A)
      • P(c);SBLOCK,XS(E)::B(A)
      • S(d);N_GUARD::R1(D),XR(b)
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