MESON Chess Problem Database

Problem Display
PID: 175471 (5N2/1p2N2B/1P2p2R/R1npk2K/8/1P6/5P2/4B2Q w - - 0 1)

Bernard, Henry D'Oyly

The Field, 1896

(First published on Sat Nov 14 1896)

5N2/1p2N2B/1P2p2R/R1npk2K/8/1P6/5P2/4B2Q

#2

11 + 5

533 Philadelphia Times 1899
6490 yacpdb 2018
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sfg6#
    • 1...d4
      • 2.Qh2#
  • Tries
    • 1.Bc3+?
      • 1...Kf4
        • 2.Sfg6#
        • 2.Rf6#
      • 1...d4
        • 2.Qh2#
      • 1...Kd6!
    • 1.Rxe6+?
      • 1...Kd4
        • 2.Qxd5#
      • 1...Kf4
        • 2.Sxd5#
        • 2.Sfg6#
        • 2.Bd2#
      • 1...Sxe6!
    • 1.Qxd5+?
      • 1...Kf4
        • 2.Seg6#
        • 2.Sfg6#
        • 2.Bd2#
        • 2.Rf6#
      • 1...exd5!
  • Keys
    • 1.Bb4!
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf4
        • 2.Sfg6#
      • 1...Kd6
        • 2.Rxe6#
      • 1...Sxb3
        • 2.Qe4#
      • 1...Sd3
        • 2.Qe4#
      • 1...Sa4
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sa6
        • 2.Qe4#
      • 1...Sd7
        • 2.Qe4#
      • 1...d4
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(K)
    • P(b);P_SPINS(a),SBLOCK::QAB(B)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • P(b);P_SPINP(b),P_SPINS(a)::QAB(B)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
    • Try
      • R(H);CHECK,XP(d)
      • Vars
        • K(c);S_FLIGHT::QAR1(B),XP(b)
      • Refutation
        • S(a);P_SPINP(b),XR(H)
    • Try
      • Q(B);CHECK,XP(b)
      • Refutation
        • P(d);XQ(B)
  • Actual
    • B(A);
    • Vars
      • K(c);S_FLIGHT::QAB(B)
      • K(c);S_FLIGHT::S(K)
      • K(c);P_SPINP(d),P_SPINS(a),S_FLIGHT::R1(H),XP(d)
      • S(a);N_GUARD,P_SPINP(b),XP(D)::QAR1(B)
      • S(a);N_GUARD,P_SPINP(b)::QAR1(B)
      • S(a);N_GUARD,P_SPINP(b)::QAR1(B),XS(a)
      • P(b);P_SPINS(a),SBLOCK::QAB(B)
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