MESON Chess Problem Database

Problem Display
PID: 251829 (3N4/3p2K1/3pP3/Rp1pk1p1/4pbP1/1p5Q/NR6/B6B w - - 0 1)

Anonymous

Manchester Weekly Times, 1889

(First published on Thu Jun 29 1899)

3N4/3p2K1/3pP3/Rp1pk1p1/4pbP1/1p5Q/NR6/B6B

#2

10 + 9

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qc3#
    • 1...bxa2
      • 2.Rbxb5#
    • 1...b4
      • 2.Rxb3#
    • 1...dxe6
      • 2.Sc6#
  • Tries
    • 1.Sc6+?
      • 1...Kxe6
        • 2.Qh6#
      • 1...dxc6!
    • 1.Sf7+?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kxe6!
  • Keys
    • 1.Qf3!
      • 1...Kd4
        • 2.Qc3#
      • 1...bxa2
        • 2.Rbxb5#
      • 1...exf3
        • 2.Re2#
      • 1...dxe6
        • 2.Sc6#
      • 1...d4
        • 2.Qxe4#
      • 1...Bc1
        • 2.Qf6#
      • 1...Bd2
        • 2.Qf6#
      • 1...Bh2
        • 2.Qf6#
      • 1...Be3
        • 2.Qf6#
      • 1...Bg3
        • 2.Qf6#
      • 1...e3
        • 2.Qxd5#
      • 1...b4
        • 2.Rxb3#
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • K(f);S_CUTP(e),S_FLIGHT::QAB1(E)
    • P(a);OGATE,XS(C)::B(A)+R(D),XP(d)
    • P(d);P_SPINP(e)::B(A)+R(D),XP(a)
    • P(i);N_GUARD,SBLOCK,XP(H)::S(J)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(f);P-FLIGHT,S_CUTP(i),XP(H)::QAR(E)
      • Refutation
        • P(i);XS(J)
    • Try
      • S(J);CHECK
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAB1(E)
      • Refutation
        • K(f);P-FLIGHT,XP(H)
  • Actual
    • Q(E);
    • Vars
      • K(f);S_CUTP(e),S_FLIGHT::QAB1(E)
      • P(a);OGATE,XS(C)::B(A)+R(D),XP(d)
      • P(b);XQ(E)::B(A)+R(D),DCHECK
      • P(i);N_GUARD,SBLOCK,XP(H)::S(J)
      • P(e);N_GUARD,P_SPINP(d)::QAR1(E),XP(b)
      • B(c);OGATE::QAB1(E)
      • P(b);OGATE::QAR1(E),XP(e)
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