MESON Chess Problem Database

Problem Display
PID: 272899 (Q4n2/P7/2pp2P1/3k2N1/8/2B5/b1B3N1/4R2K w - - 0 1)

Fellows, Herbert N

Liverpool Weekly Mercury, 1903

(First published on Sat Apr 25 1903)

Q4n2/P7/2pp2P1/3k2N1/8/2B5/b1B3N1/4R2K

#2

9 + 5

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxc6#
  • Tries
    • 1.Sf4+?
      • 1...Kc4
        • 2.Qxc6#
      • 1...Kc5!
    • 1.Ba4?
      • threat
        • 2.Qxc6#
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kc4!
    • 1.Be4+?
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kc4!
    • 1.Rd1+?
      • 1...Kc4
        • 2.Qxc6#
      • 1...Kc5!
    • 1.Re5+?
      • 1...Kc4
        • 2.Qxc6#
      • 1...dxe5!
  • Keys
    • 1.Se4!
      • 1...Kc4
        • 2.Qxc6#
      • 1...Ke6
        • 2.Sf6#
      • 1...Sxg6
        • 2.Qg8#
      • 1...Bb1
        • 2.Bb3#
      • 1...Bb3
        • 2.Bxb3#
      • 1...Bc4
        • 2.Sf4#
      • 1...Se6
        • 2.Se3#
      • 1...Sd7
        • 2.Qg8#
      • 1...Sh7
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,N_SPINP(c),S_FLIGHT::QAR2(I),XP(c)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_GUARD,N_SPINP(c),S_FLIGHT::QAR2(I),XP(c)
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT
    • Try
      • B(C);
      • Threat
        • QAB1(I),XP(c)
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(I),XP(c)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(I),XP(c)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(b);N_GUARD,N_SPINP(c),S_FLIGHT::QAR2(I),XP(c)
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(b);N_GUARD,N_SPINP(c),S_FLIGHT::QAR2(I),XP(c)
      • Refutation
        • P(d);XR(A)
  • Actual
    • S(F);
    • Vars
      • K(b);N_GUARD,N_SPINP(c),S_FLIGHT::QAR2(I),XP(c)
      • K(b);N_GUARD,N_SPINP(c),S_FLIGHT::R(A)+S(F)
      • S(e);OGATE,XP(G)::QAB(I)
      • B(a);N_GUARD::B(C)
      • B(a);N_GUARD::B(C),XB(a)
      • B(a);SBLOCK::S(D)
      • S(e);SBLOCK::S(D)
      • S(e);OGATE::QAB(I)
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