MESON Chess Problem Database

Problem Display
PID: 2025 (KB6/3B4/p7/kpR5/Pp6/2R5/1P6/8 w - - 0 1)

Atkinson, William

Illustrated London News, 1878

(First published on Sat Dec 7 1878)

KB6/3B4/p7/kpR5/Pp6/2R5/1P6/8

#2

7 + 4

4774 Canadian Chess Problems 1890

SOLUTION

  • SOUND
  • Sets
    • 1...Kb6
      • 2.Bc7#
  • Tries
    • 1.R3c4?
      • 1...Kb6
        • 2.Bc7#
      • 1...b3
        • 2.Bc7#
      • 1...Kxa4!
    • 1.Rxb5+?
      • 1...Kxa4
        • 2.Rbc5#
        • 2.Rd5#
        • 2.Re5#
        • 2.Rf5#
        • 2.Rg5#
        • 2.Rh5#
      • 1...axb5!
    • 1.b3?
      • threat
        • 2.Bc7#
      • 1...Kb6
        • 2.Bc7#
      • 1...bxc3!
  • Keys
    • 1.R5c4!
      • 1...Kxa4
        • 2.Ra3#
      • 1...Kb6
        • 2.Bc7#
      • 1...bxc3
        • 2.Bc7#
      • 1...bxa4
        • 2.Bc7#
      • 1...bxc4
        • 2.Bc7#
      • 1...b3
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(c),S_FLIGHT::B(G)
  • Tries
    • Try
      • R(B);
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::B(G)
        • P(a);::B(G)
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT,P_SPINP(a),XP(C)
    • Try
      • R(D);CHECK,XP(c)
      • Refutation
        • P(d);XR(D)
    • Try
      • P(A);
      • Threat
        • B(G)
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::B(G)
      • Refutation
        • P(a);XR(B)
  • Actual
    • R(D);N_PINP(c)
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINP(a),XP(C)::R1(B)
      • K(b);S_FLIGHT::B(G)
      • P(a);XR(B)::B(G)
      • P(c);XP(C)::B(G)
      • P(c);XR(D)::B(G)
      • P(a);::B(G)
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