MESON Chess Problem Database

Problem Display
PID: 222645 (4R3/5rn1/N3bb2/Q2R4/2ppk3/6B1/5P2/2n2B1K w - - 0 1)

Pierce, James

Preston Guardian, 1883

(First published on Wed Oct 3 1883)

4R3/5rn1/N3bb2/Q2R4/2ppk3/6B1/5P2/2n2B1K

#2

8 + 8

4817 English Mechanic and World of Science 1883
6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Bg2#
    • 1...d3
      • 2.Bg2#
  • Tries
    • 1.Sc5+?
      • 1...Kxd5
        • 2.Bg2#
      • 1...Kf3!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Bg2#
      • 1...Kxd5
        • 2.Bg2#
        • 2.Qf3#
      • 1...Be5
        • 2.Rxe5#
      • 1...Bh4
        • 2.Re5#
      • 1...Bg5
        • 2.Re5#
      • 1...Be7
        • 2.Re5#
      • 1...Bd8
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(a);SBLOCK::B(A)
    • P(c);::B(A)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);N_SPINB(e),S_FLIGHT,XR(F)::B(A)
      • Refutation
        • K(d);N_SPINB(e),S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • B(A)
    • Vars
      • B(f);N_GUARD,N_SPINB(e)::R1(F),XB(f)
      • B(f);N_GUARD::R1(F)
      • B(f);N_GUARD,N_SPINB(e)::R1(F)
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