MESON Chess Problem Database

Problem Display
PID: 52525 (N2N4/2B5/r3p1p1/3k4/n2P2p1/8/P3Q1pq/K2R3B w - - 0 1)

Bristow, Henry

The Field, 1884

(First published on Sat May 3 1884)

N2N4/2B5/r3p1p1/3k4/n2P2p1/8/P3Q1pq/K2R3B

#2

9 + 8

16 Chess Amateur (The) 1908
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Bxg2#
    • 1...Qh4
      • 2.Bxg2#
    • 1...Qh5
      • 2.Bxg2#
    • 1...Qh6
      • 2.Bxg2#
    • 1...Qh7
      • 2.Bxg2#
    • 1...Qh8
      • 2.Bxg2#
    • 1...Ra5
      • 2.Qxe6#
    • 1...Ra7
      • 2.Qxe6#
    • 1...Rxa8
      • 2.Qxe6#
    • 1...Sb6
      • 2.Qxe6#
  • Tries
    • 1.Sb6+?
      • 1...Sxb6
        • 2.Qxe6#
      • 1...Rxb6!
    • 1.Bb6?
      • threat
        • 2.Qxe6#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Qe5
        • 2.dxe5#
      • 1...Qd6
        • 2.Bxg2#
      • 1...Sc5
        • 2.dxc5#
      • 1...e5
        • 2.dxe5#
      • 1...Rxb6!
    • 1.Qf3+?
      • 1...Kc4
        • 2.Qb3#
      • 1...gxf3!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qxe6#
      • 1...Kxd6
        • 2.Qxe6#
      • 1...Qxd6
        • 2.Bxg2#
      • 1...Rxd6
        • 2.Sc7#
      • 1...Qe5
        • 2.dxe5#
      • 1...Sc5
        • 2.dxc5#
      • 1...e5
        • 2.dxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • Q(b);N_GUARD::B(C),XP(a)
    • Q(b);N_GUARD,P_PINP(F)::B(C),XP(a)
    • R(f);N_GUARD::QAB1(E),XP(g)
    • R(f);N_GUARD,XS(H)::QAB1(E),XP(g)
    • S(c);P_PINP(D),S_CUTR(f)::QAB1(E),XP(g)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • S(c);P_PINP(D),XS(H)::QAB1(E),XP(g)
      • Refutation
        • R(f);XS(H)
    • Try
      • B(G);
      • Threat
        • QAB1(E),XP(g)
      • Vars
        • K(e);N_SPINP(a),P-FLIGHT::QAR1(E),XP(g)
        • Q(b);OGATE,P_PINP(F)::R(B)+P(F),XQ(b)
        • Q(b);N_GUARD,SBLOCK::B(C),XP(a)
        • S(c);OGATE,P_PINP(D)::R(B)+P(F),XS(c)
        • P(g);OGATE::R(B)+P(F),XP(g)
      • Refutation
        • R(f);XB(G)
    • Try
      • Q(E);CHECK,N_PINP(a)
      • Vars
        • K(e);S_FLIGHT::QAB1(E)
      • Refutation
        • P(d);XQ(E)
  • Actual
    • B(G);
    • Threat
      • QAB1(E),XP(g)
    • Vars
      • K(e);N_SPINP(a),P-FLIGHT,XB(G)::QAR1(E),XP(g)
      • Q(b);N_GUARD,SBLOCK,XB(G)::B(C),XP(a)
      • R(f);SBLOCK,XB(G)::S(H)
      • Q(b);OGATE,P_PINP(F)::R(B)+P(F),XQ(b)
      • S(c);OGATE,P_PINP(D)::R(B)+P(F),XS(c)
      • P(g);OGATE::R(B)+P(F),XP(g)
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