MESON Chess Problem Database

Problem Display
PID: 298 (4K3/4P3/8/2pPkPp1/2P1P1P1/8/1N2R2N/4B3 w - - 0 1)

Hartong, Jan

3rd HM., The Observer, 1920

(First published on Sun Jun 27 1920)

4K3/4P3/8/2pPkPp1/2P1P1P1/8/1N2R2N/4B3

#2

11 + 3

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Sf3#
    • 1...Kf4
      • 2.Sd3#
    • 1...Kd6
      • 2.Bg3#
    • 1...Kf6
      • 2.Bc3#
  • Tries
    • 1.Kd7?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kf6!
    • 1.Kf7?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6!
    • 1.Kd8?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Bg3#
        • 2.e5#
      • 1...Kf6!
    • 1.Kf8?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kf6
        • 2.Bc3#
        • 2.e5#
      • 1...Kd6!
    • 1.Sd3+?
      • 1...Kd6
        • 2.Bg3#
      • 1...Kf6
        • 2.Bc3#
      • 1...Kd4!
    • 1.Sf3+?
      • 1...Kd6
        • 2.Bg3#
      • 1...Kf6
        • 2.Bc3#
      • 1...Kf4!
    • 1.Bd2?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf6
        • 2.Bc3#
      • 1...Kd6!
    • 1.Bf2?
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Bg3#
      • 1...Kf6!
    • 1.d6?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kf6
        • 2.Bc3#
      • 1...Kxd6!
    • 1.f6?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Bg3#
      • 1...Kxf6!
  • Keys
    • 1.Ba5!
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Bc7#
      • 1...Kd6
        • 2.e5#
      • 1...Kf6
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::S(D)
    • K(b);S_FLIGHT::S(B)
    • K(b);S_FLIGHT::B(A)
  • Tries
    • Try
      • K(K);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(K);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(K);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(K);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(b);S_FLIGHT::B(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::B(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT::B(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(b);S_FLIGHT::S(B)
        • K(b);S_FLIGHT::B(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(H);
      • Vars
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT::S(B)
        • K(b);S_FLIGHT::B(A)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • P(I);
      • Vars
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT::S(B)
        • K(b);S_FLIGHT::B(A)
      • Refutation
        • K(b);S_FLIGHT,XP(I)
  • Actual
    • B(A);
    • Vars
      • K(b);S_FLIGHT::S(D)
      • K(b);S_FLIGHT::B(A)
      • K(b);OGATE,S_FLIGHT::P(F)
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