MESON Chess Problem Database

Problem Display
PID: 152438 (4N3/8/4pRn1/2pPp3/2N1k2P/1K2P3/4B3/8 w - - 0 1)

Colville, Robert A

Hampstead and Highgate Express, 1898

(First published on Sat Aug 6 1898)

4N3/8/4pRn1/2pPp3/2N1k2P/1K2P3/4B3/8

#2

8 + 5

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...exd5
      • 2.Sed6#
  • Tries
    • 1.Rxe6?
      • 1...Kf5
        • 2.Scd6#
        • 2.Sed6#
      • 1...Sxh4
        • 2.Rxe5#
      • 1...Sf4
        • 2.Rxe5#
      • 1...Se7
        • 2.Rxe5#
      • 1...Sf8
        • 2.Rxe5#
      • 1...Sh8
        • 2.Rxe5#
      • 1...Kxd5!
  • Keys
    • 1.Rf5!
      • 1...Kxd5
        • 2.Bf3#
      • 1...Kxf5
        • 2.Scd6#
      • 1...Sxh4
        • 2.Rxe5#
      • 1...exd5
        • 2.Sed6#
      • 1...exf5
        • 2.Sf6#
      • 1...Sf4
        • 2.Rxe5#
      • 1...Se7
        • 2.Rxe5#
      • 1...Sf8
        • 2.Rxe5#
      • 1...Sh8
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK,XP(F)::S(H)
  • Tries
    • Try
      • R(G);P_PINP(c),XP(d)
      • Vars
        • S(e);N_GUARD,XP(E)::R1(G),XP(c)
        • S(e);N_GUARD::R1(G),XP(c)
      • Refutation
        • K(a);N_SPINP(c),S_FLIGHT,XP(F)
  • Actual
    • R(G);
    • Vars
      • K(a);P_SPINP(c),S_FLIGHT,XP(F)::B(A)
      • K(a);S_FLIGHT,XR(G)::S(D)
      • S(e);N_GUARD,XP(E)::R1(G),XP(c)
      • P(d);SBLOCK,XP(F)::S(H)
      • P(d);SBLOCK,XR(G)::S(H)
      • S(e);N_GUARD::R1(G),XP(c)
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