MESON Chess Problem Database

Problem Display
PID: 258311 (8/8/4p3/3N1R2/4k1pp/2P1B1bR/8/1K3Q2 w - - 0 1)

Pierce, James

English Mechanic and World of Science, 1891

(First published on Fri Jul 10 1891)

8/8/4p3/3N1R2/4k1pp/2P1B1bR/8/1K3Q2

#2

7 + 5

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Sf6#
    • 1...Bh2
      • 2.Sf6#
    • 1...Bd6
      • 2.Sf6#
    • 1...Bc7
      • 2.Sf6#
    • 1...Bb8
      • 2.Sf6#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Qd3#
      • 1...Kxe3
        • 2.Qd3#
        • 2.Qe1#
      • 1...exf5!
    • 1.Bd4?
      • threat
        • 2.Sf6#
      • 1...Bf2
        • 2.Re5#
        • 2.Qd3#
      • 1...Bf4
        • 2.Qd3#
        • 2.Qxf4#
      • 1...Be5
        • 2.Rxe5#
      • 1...exd5!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Re5#
      • 1...Kxf5
        • 2.Qd3#
      • 1...Bxf4
        • 2.Qd3#
        • 2.Qxf4#
      • 1...exf5
        • 2.Sf6#
      • 1...e5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • B(a);::S(F)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB1(B)
      • Refutation
        • P(e);XR(G)
    • Try
      • B(D);
      • Threat
        • S(F)
      • Vars
        • B(a);N_GUARD::R1(G),XB(a)
      • Refutation
        • P(e);XS(F)
  • Actual
    • B(D);
    • Threat
      • R1(G)
    • Vars
      • K(b);N_GUARD,S_FLIGHT,XR(G)::QAB(B)
      • P(e);SBLOCK,XR(G)::S(F)
      • P(e);::R1(G),XP(e)
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