MESON Chess Problem Database

Problem Display
PID: 2864 (4N3/1p1B4/pP6/K2kp3/1P1pRp2/5p2/2PN1P2/8 w - - 0 1)

Laws, Benjamin Glover

Source?, 1896

4N3/1p1B4/pP6/K2kp3/1P1pRp2/5p2/2PN1P2/8

#2

9 + 7

2681 All Change Here! 1919

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.c4#
  • Tries
    • 1.Ka4?
      • 1...d3
        • 2.c4#
      • 1...a5!
    • 1.Sc4?
      • 1...Kxe4
        • 2.Sf6#
      • 1...d3
        • 2.Sf6#
      • 1...Kxc4!
    • 1.Rxf4?
      • 1...e4
        • 2.Rf5#
      • 1...d3
        • 2.c4#
      • 1...exf4!
  • Keys
    • 1.Sb1!
      • 1...Kc4
        • 2.Be6#
      • 1...Kxe4
        • 2.Sf6#
      • 1...d3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::P(A)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • P(b);N_GUARD::P(A)
      • Refutation
        • P(f);
    • Try
      • S(B);
      • Vars
        • K(d);S_FLIGHT,XR(E)::S(I)
        • P(b);::S(I)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT,XS(B)
    • Try
      • R(E);XP(c)
      • Vars
        • P(e);OGATEB::R(E)
        • P(b);N_GUARD::P(A)
      • Refutation
        • P(e);XR(E)
  • Actual
    • S(B);
    • Vars
      • K(d);P_SPINP(b),S_FLIGHT::B(H)
      • K(d);S_FLIGHT,XR(E)::S(I)
      • P(b);N_GUARD::S(B)
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