MESON Chess Problem Database

Problem Display
PID: 221404 (1Nb2K2/1p3B2/1P3R2/2P1k1p1/4N1P1/4P3/8/5n1Q w - - 0 1)

Allen, Jeff W

The Field, 1890

(First published on Sat Dec 6 1890)

1Nb2K2/1p3B2/1P3R2/2P1k1p1/4N1P1/4P3/8/5n1Q

#2

10 + 5

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Rxf5#
    • 1...Bd7
      • 2.Sxd7#
  • Tries
    • 1.Sd6?
      • 1...Kxf6
        • 2.Qh8#
      • 1...Sxe3
        • 2.Qa1#
      • 1...Bf5
        • 2.Rxf5#
      • 1...Be6
        • 2.Rxe6#
      • 1...Bd7
        • 2.Sxd7#
      • 1...Sd2
        • 2.Qa1#
      • 1...Sh2
        • 2.Qa1#
      • 1...Sg3
        • 2.Qa1#
      • 1...Bxg4!
  • Keys
    • 1.Sf2!
      • 1...Kxf6
        • 2.Qh8#
      • 1...Bxg4
        • 2.Sxg4#
      • 1...Sxe3
        • 2.Qa1#
      • 1...Bf5
        • 2.Rxf5#
      • 1...Be6
        • 2.Rxe6#
      • 1...Bd7
        • 2.Sxd7#
      • 1...Sd2
        • 2.Qa1#
      • 1...Sh2
        • 2.Qa1#
      • 1...Sg3
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD::R1(G),XB(e)
    • B(e);N_GUARD::S(I),XB(e)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(G)::QAB(A)
        • S(a);OGATE,XP(B)::QAB(A)
        • B(e);N_GUARD::R1(G),XB(e)
        • B(e);N_GUARD::S(I),XB(e)
        • S(a);OGATE::QAB(A)
      • Refutation
        • B(e);XP(D)
  • Actual
    • S(C);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(G)::QAB(A)
      • B(e);XP(D)::S(C),XB(e)
      • S(a);OGATE,XP(B)::QAB(A)
      • B(e);N_GUARD::R1(G),XB(e)
      • B(e);N_GUARD::S(I),XB(e)
      • S(a);OGATE::QAB(A)
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