MESON Chess Problem Database

Problem Display
PID: 154667 (N1Bn4/5n2/R1bk1P2/2r1R3/1P6/2p1K3/1N6/8 w - - 0 1)

Grindley, AT

Sheffield Guardian (The), 1911

(First published on Fri Nov 3 1911)

N1Bn4/5n2/R1bk1P2/2r1R3/1P6/2p1K3/1N6/8

#2

8 + 6

15239 Valois Notebooks 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Sxc4#
    • 1...Ra5
      • 2.Sc4#
    • 1...Rb5
      • 2.Sc4#
    • 1...Rd5
      • 2.Sc4#
  • Tries
    • 1.Rd5+?
      • 1...Rxd5
        • 2.Sc4#
      • 1...Kxd5!
    • 1.Re6+?
      • 1...Kd5
        • 2.Sb6#
        • 2.Sc7#
      • 1...Sxe6!
  • Keys
    • 1.Kd4!
      • threat
        • 2.bxc5#
      • 1...Rc4+
        • 2.Sxc4#
      • 1...Rd5+
        • 2.Rxd5#
      • 1...Se6+
        • 2.Rxe6#
      • 1...Rxe5
        • 2.Sc4#
      • 1...Ra5
        • 2.Sc4#
      • 1...Rb5
        • 2.Sc4#
      • 1...Sb7
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::S(A),XR(b)
    • R(b);N_GUARD::S(A)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • R(b);SBLOCK,XR(D)::S(A)
      • Refutation
        • K(d);N_SPINB(c),P-FLIGHT,XR(D)
    • Try
      • R(D);CHECK
      • Refutation
        • S(f);XR(D)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • P(C),XR(b)
    • Vars
      • R(b);CHECK,N_GUARD::S(A),XR(b)
      • R(b);CHECK,N_GUARD::R1(D),XR(b)
      • S(f);CHECK,N_GUARD::R1(D),XS(f)
      • R(b);N_GUARD,XR(D)::S(A)
      • R(b);N_GUARD::S(A)
      • S(f);N_GUARD::R1(D)
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