MESON Chess Problem Database

Problem Display
PID: 267091 (bb2B3/p6p/2nN3k/8/6R1/8/3R3K/7n w - - 0 1)

Fitzeli, WH

The Problemist, 1955

bb2B3/p6p/2nN3k/8/6R1/8/3R3K/7n

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6+
      • 2.Rxd6#
    • 1...Se5
      • 2.Sf5#
  • Tries
    • 1.Kg1?
      • threat
        • 2.Sf5#
        • 2.Rh2#
      • 1...Bxd6
        • 2.Rxd6#
      • 1...Sf2
        • 2.Sf5#
      • 1...Sd4
        • 2.Rh2#
      • 1...Se7
        • 2.Rh2#
      • 1...Sg3!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Rh5#
      • 1...Bxd6+
        • 2.Rxd6#
      • 1...Sg3
        • 2.Sf7#
      • 1...Se5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(g);CHECK,OGATE,XS(D)::R(A),XB(g)
    • S(b);N_PINS(D)::S(D)
  • Tries
    • Try
      • K(B);N_SPINS(D),S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(g);OGATE,XS(D)::R(A),XB(g)
        • S(a);::S(D)
        • S(b);::R(A)
      • Refutation
        • S(a);
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • B(g);CHECK,OGATE,XS(D)::R(A),XB(g)
      • S(a);N_PINS(D)::S(D)
      • S(b);N_PINS(D)::S(D)
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