MESON Chess Problem Database

Problem Display
PID: 151001 (2R4K/Bp6/5Q2/3kp2p/5P1r/2b2p2/2P1n3/rB6 w - - 0 1)

Bull, Cecil Alfred Lucas

The Field, 1886

(First published on Sat Jan 16 1886)

2R4K/Bp6/5Q2/3kp2p/5P1r/2b2p2/2P1n3/rB6

#2

7 + 9

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qxe5#
      • 2.c4#
    • 1...Bb2
      • 2.c4#
    • 1...Bd2
      • 2.Qxe5#
      • 2.c4#
    • 1...Bb4
      • 2.Qxe5#
      • 2.c4#
    • 1...Bd4
      • 2.c4#
    • 1...Ba5
      • 2.Qxe5#
      • 2.c4#
    • 1...Sd4
      • 2.Qxe5#
    • 1...e4
      • 2.Rc5#
    • 1...b5
      • 2.Qc6#
  • Tries
    • 1.Rc5+?
      • 1...Kd4
        • 2.Qxe5#
      • 1...Ke4!
    • 1.Qf7+?
      • 1...Kd6
        • 2.Bc5#
        • 2.Bb8#
      • 1...Ke4!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Qxe5#
      • 1...Ke4
        • 2.Qxe5#
      • 1...Bxd4
        • 2.c4#
      • 1...exd4
        • 2.Qe5#
      • 1...exf4
        • 2.Qe5#
      • 1...e4
        • 2.Rc5#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(c);OGATE::P(B)
    • S(b);S_CUTB(c)::QAR1(D),XP(g)
    • P(g);P_PINQ(D),SBLOCK::R1(F)
    • P(i);N_GUARD::QAB1(D)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINP(g)::QAB1(D),XP(g)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • B(E);
    • Threat
      • QAR1(D),XP(g)
    • Vars
      • K(f);P-FLIGHT,P_SPINP(g),XB(E)::QAB1(D),XP(g)
      • K(f);S_FLIGHT::QAR1(D),XP(g)
      • B(c);OGATE,SBLOCK,XB(E)::P(B)
      • P(g);XB(E)::QAR1(D)
      • P(g);XP(C)::QAR1(D)
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